We are looking for an experienced Solidity developer to work with our Rust-based team building cutting edge AVS-infrastructure. Your work will involve writing contracts and deploy scripts, and helping Rust devs properly interface with these contracts. We are building a multi-chain protocol based on Eigenlayer restaking, and you will are expected to have deeper EVM/Ethereum knowledge than any other teammate. You should feel comfortable making architecture decisions and recommendations on best integrations with Ethereum and other EVM-based chains.

Responsibilities:

• Writing secure Solidity Contracts
• Extending eigenlayer-middleware contracts
• Writing deploy scripts (solidity / bash / foundry)
• Providing solidity interfaces to the Rust team
• Participating in architectural discussions
• Providing recommendations on Solidity/Ethereum best practices
• Properly testing our Solidity-based infrastructure

Requirements

• 5+ years of professional software development
• 2+ years of production work on Solidity / Ethereum
• Experience with TDD and CI workflows
• Basic working knowledge of Rust
• Working knowledge of bash scripts
• Within 1 hour of CET timezone
• Good written and spoken communication in English
• Experience working in a remote team

Company Overview - Layer Labs

Layer is a fast-growing Web3 startup, launched in September 2024, with the mission to enable developers to build an entirely decentralized stack and create novel applications. We develop a Rust-based blockchain stack that supports decentralized compute for AVSs, GPU, storage, and ZK proofs, paving the way for the future of the web3 ecosystem. Our vision is to resurrect the true principles of web3, creating a trust-based, decentralized internet and shifting away from techno-feudalism. Recently, Layer announced a seed fundraising round of $6 million, with a valuation of $72 million, solidifying our position as a leader in decentralized infrastructure innovation.

Layer was co-founded by three blockchain pioneers:

• Jake Hartnell (CEO), who previously co-founded Juno, Stargaze and DAO DAO;
• Sam Cassatt (CBO), former Chief Strategy Officer at ConsenSys; and
• Ethan Frey (CTO), founder of CosmWasm and architect of key protocols like IBC for the Cosmos ecosystem.

Benefits

This is an hourly rate, contract-based position.

Our Culture:

• You’ll be hands-on, collaborating, and learning right away. We embrace creative complexity together.
• We are a full-stack organization with a strong engineering culture, which values open-source.

What We Offer:

• Remote working environment
• International, collaborative team
• Competitive fees

VDEX is a fast-growing DeFi startup focused on building a decentralized perpetual exchange. VDEX is backed by Binance Labs and Gate Exchange and passed $10 million in volume last month.

Powered by Virtual Rollups, the VDEX architecture is designed to overcome the performance and cost limitations of traditional blockchain systems by allowing the users to trade with instant finality, ZeroGas fees and omnichain (trade among different chains without requiring any bridge).

VDEX offers competitive salary and generous equity/token.

Level: Mid to Senior

Responsibilities

• Collaborate with senior developers and blockchain engineers to design and develop backend services in Golang for our DeFi platform and improve our frontend in Typescript.
• Maintain and improve existing backend, frontend, and our smart contracts on EVM chains.
• Write clean, efficient, and well-documented code.
• Participate in code reviews and contribute to improving engineering practices.
• Support integration with new features and DeFi protocols.

Requirements

• Solid programming skills in Golang (Go) and Typescript, or willing to learn.
• Understanding of blockchain fundamentals and DeFi concepts like EVM, tokens, yields.
• Strong backend engineering experience, including designing APIs, services, and distributed systems with a focus on reliability and performance.
• Clean code principles: writes well-structured, readable, and testable code, adheres to SOLID principles and practices good software design patterns.
• Previous experience in remote first team, or ability to work independently in a remote-first team.
• Knowledge of basic cryptographic principles and key management.
• Comfortable using Git, Docker, AWS and CI/CD tools.
• Good communication and collaboration skills.
• Self-starter mindset and willingness to learn fast.

Nice to Have

• Understanding of traditional finance concepts like order books, perpetuals and trading concepts.
• Ability to reason in mathematical terms and provide formal arguments of correctness and security of a system.
• Experience working with smart contracts (Solidity).
• Familiarity with Ethereum and etherjs library.
• Contributions to other open-source projects or previous work in DeFi and crypto.
• Understanding of performance tuning, observability, and distributed tracing in backend systems.

Apply Now:

*About CoW DAO

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

About the role**

Location: We are a fully remote team, and although we hire almost globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time

Please note we’re not hiring from the US, Australia, or New Zealand.

Position: Full-time contractor

We are looking for an enthusiastic, self-motivated, Senior Backend Engineer to help us build the next generation of decentralised trading protocols. As a dedicated backend engineer, you will gain ownership of our existing backend services and influence the creation, design, and execution of future features and products. You will work on technically challenging aspects of our off-chain services and our developer-facing APIs and help ensure the delivery of reliable and performant features to improve CoW Protocol.

Our Tech Stack

• Backend Code: Rust, Tokio, Cargo, Git (https://github.com/cowprotocol/services)
• Infrastructure: Pulumi, AWS, Docker, Kubernetes, Grafana, Prometheus, Elasticsearch
• Other codebases: Typescript, Python, Solidity

What you will do

• Architect and design our off-chain services (core auction protocol as well as the orderbook) to support feature growth and the rapidly changing requirements that come from being an application on a constantly evolving blockchain.
• While your focus will be writing concurrent backend systems in Rust, you will also interact with our Smart Contracts written in Solidity and develop your understanding of auction mechanisms and DeFi protocols
• Participate in our on-call rotation to help ensure the reliability of our production systems (on-call work is additionally compensated)
• Work closely with researchers and the product team to ship features and come up with new solutions for challenging technical problems
• Deliver high-quality code for features from concept until production (including state-of-the-art monitoring of our production systems)
• Give thoughtful and in-depth code reviews of your colleagues’ contributions to our open-source codebase

Who you are

• You have 5+ years of production experience with systems-level programming languages, with at least 1+ year of hands-on production experience using Rust
• You have practical experience working in web3 (ideally in DeFi and the Ethereum ecosystem)
• You have excellent computer science, programming, and algorithmic skills
• Experience with operating, maintaining, and architecting complex software systems
• You care deeply about the quality, readability, observability, and testability of your code
• You proactively give technical direction to improve performance, prevent issues, optimise data usage, and refactor the codebase
• You are a team player, strong communicator, and gladly share your expertise with others
• You collaborate effectively with a remote-first team on a large, open-source codebase
• Ideally, someone senior who can mentor colleagues and provide direction.
• You are excited to explore and gain experience with Ethereum

What we can offer you

• Flexible work environment: Join our hub in Lisbon or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Enjoy opportunities to connect with the rest of the team through regular trips
• Conference allocation: Stay up-to-date with ecosystem advancements using our conference budget
• Learning budget: Use our learning budget to support your higher ambitions
• Hardware budget: Take advantage of a hardware budget for acquiring necessary equipment
• Make an impact: You are joining a startup where you can make a huge difference. Your work matters!
• Flat hierarchies mean fewer processes and bureaucracy - see more of your ideas come to life!
• Flexible work and vacation times: Prioritize work-life balance through our robust flexible work policy and vacation allowance
• Growth: If you’re someone who loves taking the initiative and getting things done, CoW offers lots of opportunities for your individual growth

Referral Program

Earn 6.000 USDC or USD with the refer-to-earn program. More details here.

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our diverse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.

Caiz

Revolutionizing Islamic Finance with Blockchain Technology

Are you ready to be part of a groundbreaking initiative that combines Islamic finance principles with cutting-edge blockchain technology?

Look no further than Caiz– THE FIRST ISLAMIC ECOSYSTEM BUILT ON BLOCKCHAIN.

At Caiz, our mission is clear: to create a Fiqh compliant financial ecosystem that provides our community with fair and easy access to ethical financial products and services. We believe in empowering individuals to build a strong financial future while engaging in long-term economically beneficial behavior.

Our native coin, Caizcoin, that fuels the Caizblockchain. With Caizcoin, you can make seamless payments, store value, and interact with a range of ethical financial products we are developing. The centerpiece of our ecosystem is the innovative Caizapp, giving users complete control over their digital assets.

We are a passionate team reshaping finance, and we are expanding our dynamic workforce. Join us in a collaborative work environment focused on creating a fast and compliant money transfer structure.

WHY TO JOIN Caiz?

• Innovative & Purpose-Driven: At Caiz, we combine advanced blockchain technology with the principles of Islamic finance to create an innovative and modern financial system. Join us to be part of a forward-thinking organization that is reshaping the future of finance.
• Ethical Impact: As part of Caiz, you'll be working in an Organization that prioritizes ethics and integrity in all its operations, ensuring that every solution we offer aligns with the core values of fairness, transparency, and respect.
• Growth & Learning Opportunities: At Caiz, we value personal and professional growth. You'll have the opportunity to learn, innovate, and grow within a dynamic, supportive environment, while contributing to the development of ethical financial solutions.
• Global Vision, Local Impact: Caiz is focused on creating an inclusive, sustainable financial system that empowers individuals globally. You’ll be contributing to a company that has a positive impact on local communities and the global financial landscape.
• Collaborative Culture: We believe in teamwork and collaboration. You'll work alongside passionate professionals who are committed to driving change in the crypto and blockchain space, working together to create an ethical financial future.
• Secure & Transparent Environment: We emphasize trust and security in all aspects of our operations. As part of Caiz, you’ll be part of a transparent organization that values customer trust and ensures the highest security standards in the crypto space

Tasks

AI/ML Backend Developer (Blockchain-Focused) Job Summary:

We are seeking a talented AI/ML Backend Developer to design and implement AI-driven features into our blockchain ecosystem. You will be responsible for building and deploying machine learning models, managing large-scale data pipelines, and working closely with our blockchain engineering team to deliver intelligent backend services.

Responsibilities:

• Design, develop, and deploy machine learning models for crypto data analysis, fraud detection, and smart automation.
• Build scalable backend systems and APIs that integrate AI capabilities.
• Handle large volumes of data from blockchain transactions and user interactions.
• Work with cross-functional teams including blockchain engineers, DevOps, and product managers.
• Monitor and optimize model performance in production environments.

Requirements

Experience:

• 3+ years of professional experience in specifically in AI/ML projects
• Proficiency in Python, with experience in TensorFlow, PyTorch, or similar ML frameworks.
• Strong backend development skills using FastAPI, Flask, or Django.
• Experience with REST APIs, databases (SQL/NoSQL), and cloud infrastructure (AWS, GCP, or Azure).
• Understanding of blockchain architecture and smart contract interaction.
• Version control using Git and containerization with Docker.

Nice to Have

• Familiarity with Solidity, Rust, or blockchain smart contract languages.
• Experience with MLOps, model serving, and CI/CD pipelines.
• Prior experience in a startup or high-growth tech environment.

Level of studies: Bachelor’s or Master’s degree in Computer Science, Artificial Intelligence, Data Science, or related field.

Language Requirements: Fluent in English

Benefits

BENEFITS AT Caiz :

• Competitive Financial Compensation: We offer financial benefits that reflect the value of your work and dedication.
• Work Flexibility: Enjoy the flexibility to work from home, the office, or even abroad.
• Annual Holidays: Generous paid time off to help you maintain a healthy work-life balance.
• Relocation Assistance: We provide relocation support for employees moving to new locations.
• Professional Development: Opportunities for training, certifications, and career growth.
• Employee Recognition: Programs to celebrate and reward your achievements and contributions.
• Inclusive & Collaborative Culture: A supportive and diverse work environment where your voice matters.
• Diversity, Equality, and Inclusion: We are committed to fostering a workplace that values diversity and promotes equality and inclusion for all employees.

Don't miss this opportunity – apply now and be part of the CAIZ revolution.

Apply Now:

Apply Now:

Quantitative Software Engineer

Who We Are

We are building a cutting-edge delta-neutral trading protocol that captures volatility and yield across BTC, ETH, and liquid altcoins through advanced basis trading, OTC liquidity strategies, and perpetual derivatives.

By combining market-neutral strategies and innovative hedging solutions, we provide unparalleled capital efficiency for institutional and advanced traders. Our team has deep experience from leading crypto protocols, traditional finance firms, and exchanges, backed by top-tier investors and partners. We are creating the next generation of yield-optimised trading infrastructure for the digital asset markets.

What We Are Building

We are pioneering a delta-neutral, volatility-driven trading infrastructure designed to enable scalable exposure to major digital assets while managing directional risk. Our protocol integrates:

• Delta-Neutral Strategies: Leveraging basis trades, funding rate arbitrage, and hedging for consistent, market-neutral yield.
• OTC Integration: Discounted asset acquisition for cost optimisation and arbitrage opportunities.
• Automated Hedging: Combining perpetual futures, options, and liquidity strategies to minimise risk.

This platform is tailored to institutions, treasuries, and sophisticated market participants looking for capital-efficient yield in the crypto space.

Who We Are Looking For

We are seeking a Quantitative Software Engineer who is excited to work at the intersection of financial innovation and frontier technology. You are a problem-solver who thrives in a fast-paced, zero-to-one environment and have a passion for designing sophisticated trading systems.

You will play a pivotal role in building and optimising the internal trading and arbitrage platform, enabling automated delta-neutral strategies that scale across both centralised exchanges and DeFi markets.

Role Summary

The Quantitative Software Engineer will develop and maintain a high-performance internal trading and arbitrage platform. You will design automated delta-neutral derivative strategies, integrate with smart contracts, and collaborate across teams to deliver robust trading solutions for real-world market conditions.

Key Responsibilities

• Develop and maintain an internal trading and arbitrage platform, focusing on real-time low-latency data capture, order execution, and risk monitoring. Design and implement automated delta-neutral derivative strategies across centralised venues and DeFi smart contracts. Establish secure and efficient connectivity with
• custody providers, centralised exchanges, and OTC desks for seamless trading operations. Optimise systems for
• latency, scalability, and high-performance execution.
• Collaborate with smart contract engineers to integrate delta-neutral strategies within DeFi ecosystems.
• Build internal monitoring tools to track risk, funding rates, and arbitrage opportunities
• in real-time. Work cross-functionally with other engineers and quantitative analysts to drive product innovation.

Qualifications

• Minimum 2 years’ professional experience at a reputable crypto trading firm, hedge fund, DeFi protocol, or digital asset exchange, with a proven track record of delivering high-quality trading systems in production environments.
• Expert-level proficiency in Python programming, with demonstrable experience in architecting, developing, and maintaining robust, high-performance trading systems. Experience with advanced Python libraries (e.g., NumPy, pandas, asyncio, websockets) and hands-on exposure to asynchronous, event-driven programming is required.
• Proficiency in Rust/C++/Go is highly desirable, including experience in building performance-critical components, low-latency systems, or integrating low latency modules with Python applications.
• Hands-on experience with market-making engines or quantitative trading platforms, including system design, order management, strategy implementation, and real-time risk management. Familiarity with order book dynamics, liquidity provisioning, and exchange connectivity (REST/WebSocket APIs, FIX protocol, etc.) is essential.
• Deep understanding of networking, CPU and memory models, and low-level programming concepts, including multi-threading, concurrency, and performance profiling. Experience with optimizing system resource usage and troubleshooting latency or throughput bottlenecks is required.
• Familiarity with Solidity and blockchain fundamentals, including smart contract development, security best practices, wallet integration, and decentralised infrastructure (e.g., EVM-compatible chains, Layer 2 scaling solutions, bridges).
• Demonstrated quantitative and analytical skills, including experience designing, backtesting, and optimizing quantitative trading strategies. Strong grasp of statistics, probability, and time-series analysis; proficiency in using simulation frameworks and data analysis tools.
• Strong understanding of financial markets and market microstructure, especially in the context of crypto assets, derivatives, and DeFi protocols.
• Experience working with large-scale data pipelines and real-time data processing, including ETL design, data validation, and integration with cloud-based or distributed systems (e.g., Kafka, Redis, TimescaleDB).
• Comfortable with DevOps practices, including containerization (Docker), CI/CD pipelines, infrastructure-as-code, and monitoring/alerting tools.
• Ability to work collaboratively in a remote-first, fast-paced environment, including excellent communication skills, self-motivation, and the capacity to manage multiple priorities and deliver under tight deadlines.
• Fluent in English, both written and spoken, with the ability to clearly explain complex technical concepts to both technical and non-technical stakeholders.
• Bachelor’s degree or higher in Computer Science, Mathematics, Engineering, Physics, or a related quantitative discipline is strongly preferred.

Our Engineering Stack

• Frontend: React, Next.js, Wagmi, Viem, TailwindCSS.
• Backend: Python, Solidity, SQL, GraphQL, Docker, AWS, Ethereum.

What We Offer

• Competitive Salary: Commensurate with experience.
• Globally remote working opportunities with flexible hours.
• An opportunity to build the next generation of yield-optimised trading infrastructure in crypto.
• Collaboration with a world-class team driving innovation in delta-neutral strategies and OTC trading.
• The chance to work on a protocol that bridges centralised and decentralised markets, delivering solutions for institutional-grade DeFi.

Why Join Us?

If you are passionate about building automated delta-neutral strategies, low-latency systems, and cutting-edge trading solutions, this is your opportunity to make a real impact. Join us as we transform how institutions capture volatility and yield in the crypto markets.

Apply now and help redefine the future of decentralised capital efficiency.

Across’ purpose: Across is to fulfill crypto’s potential by making blockchains more usable, more accessible and more efficient.

Across’ Vision: Intents are the standard in cross-chain interoperability.

Who is Risk Labs?

Risk Labs is the foundation and core team behind UMA, and some top tier products built with it such as oSnap, Oval, and the Across protocol. The Risk Labs team, operates as one cohesive (amazing!) culture, but focuses on two core protocols, UMA and Across. UMA and Across are decentralized protocols governed by community members across the globe in DAOs, and are supported by Risk Labs Foundation. UMA’s optimistic oracle (OO) can record any verifiable truth or data onto a blockchain. Across is leading the future of interoperability with its frontier intents based architecture.

Your Impact?

We’re looking for a Jr. Smart Contract Engineer to join the Across protocol team. You’d be working alongside top tier engineering talent, world class data driven product development, and a team motivated to be hugely impactful for the exciting interoperable future that we’re racing towards. You’re a person who loves optimizing and building at the intersection of technology, finance, and data.

Responsibilities

• Protocol architecture: Design and build protocol upgrades from idea to deployment.
• Smart contracts: Implement designs with a focus on security, simplicity, ease of use, and gas-efficiency.
• Code review and mentorship: Write code in a highly collaborative open source ecosystem. In depth reviews of others’ contributions is expected with a focus on helping others grow their technical expertise.
• Bots: write complimentary offchain code to interact with the protocol. Bots should have a high degree of correctness, efficiency, and anti-fragility.

These responsibilities are going to be similar to the Sr. Smart Contract role posted; however, as a junior engineer, we have lower expectations about your previous experience. That doesn’t mean our expectations are low, instead we have higher expectations for the demonstrable and uncanny ability to learn and apply new concepts quickly. Someone who is exceptionally keen to learn and invest their time with us, in exchange for us investing in their growth. Someone who we hire for this role will become proficient in the above categories.

Requirements

• 2+ years of experience in engineering at a software organization. This can include multiple internships, what we want to see is your familiarity with engineering best practices (sprints, code review, etc.) and a level of professionalism.
• 1+ years of working with blockchain-based projects (think hackathons or personal projects as well), and a deep passion for blockchain technology, cryptoeconomic protocol design, game theory, or decentralized finance
• Outstanding critical thinking skills; low ego, high curiosity and comfort in being wrong
• A love for great software; desire to understand the why and the how of everything you work on
• Demonstrated ability to apply existing skills to new technologies
• Growth mindset; a desire to learn from and mentor those around you
• Strong communication and collaboration skills, especially written

Compensation and Benefits

• Pay packages include competitive salaries & meaningful token options.
• Salaries for this role range from $100-200k (USD), and your token allocation can grow with your voting rewards while you participate in the growing ecosystem.
• Will pay in stablecoins or fiat
• Philosophies for a culture that show we care: Take vacation when you need it, family care, training and development (just to name a few)
• 100% remote, which means we encourage you to create the work environment that you thrive in
• At least two team wide offsites a year

Studies have shown that women and people of colour are less likely to apply to jobs unless they meet every single qualification. Risk Labs, the employing entity, is an equal opportunity employer and is dedicated to diverse, inclusive, and authentic workplaces. So, if you’re excited about this role but your past experience doesn’t perfectly align- we encourage you to apply anyways. We value you taking the chance. Risk labs will not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Our values:

1. We value each individual’s right to economic freedom
2. We value openness, honesty, and directness
3. We value integrity
4. We value iterative learning
5. We value taking smart risks. We value creating an environment where everyone “does their best work”.

Why do we love working at Risk Labs?

We are a group that’s aligned with the ethos of the crypto industry and doing our best to make an impact for the industry and world at large. You’ll succeed with Risk Labs if you’re a self-starter, kind, adaptable, and passionate about making an impact. Risk Labs is a values driven team that strives to create an environment where we can do our best work, and succeed. We’re building products that we believe in, and continuing to strive for innovation and growth. Both personally and professionally we support each other to create a happy, healthy, and inspired team vibe, so we can remain motivated to build things the world needs and loves. We take pride in the fact that we are at once family-friendly as well as nomad-friendly.

UMA’s optimistic oracle is a decentralized truth machine for Web3- yes, that’s a bold and very exciting statement. We’ve built a solid foundation, in terms of the team, the technology, and the products, and the road map ahead is one full of exciting technical challenges, growth, and telling our story to the world. Across is creating an interoperable world where DeFi is seamless with its intents based architecture. We’ve grown from an early bridge, to a market leader, and won’t stop innovating and building. We have big dreams, and a team excited to bring them to life.

Still want to know more?

• Our team blends a mix of highly-sought engineers, and a diverse business team to showcase their high quality tech. Our international and fast-growing team includes a diverse background of experiences and has drawn world class talent. We have a great network of supportive investors from groups like: Placeholder, Blockchain Capital, Bain Capital, Coinbase, Dragonfly… to name a few.
• Teammates take the time off that they need and support each other to be their best selves- we care about your wellness.
• You will not get bored with Risk Labs. We are constantly developing, building, experimenting and evolving. Yes we try to allow people to focus on their specific product areas, but things are always shifting and evolving. There’s no right answer and we’re all just doing our best!

About the Opportunity:

Creator Nation is a platform that enables Content Creators to fund their passion by combining the best elements of Web 2.0(Memberships etc) and Web 3.0(Collectibles, Tokens etc).

Job Role:

As the lead developer, you’ll be the brain behind crafting, developing, testing, going live and maintaining the system.

Requirements:

• Experience as Full stack developer or in a relevant projects.
• Expertise in Ethereum and Polygon Matic Blockchain, ICO, ERC-20, ERC-721, ERC-1155, IPFS, Solidity, Smart Contract development, Token development.
• Proficient in JavaScript, HTML, CSS. Full Stack Web development from start to finish.
• Hands-on experience with Moralis database.
• GCloud familiarity.
• Experience working with and implementing Stripe.
• Able to communicate in English.
• Proactive nature in solving problems and a willingness to learn and experiment new solutions.
• Fun to work with :)

Compensation:

• Equity driven. Regular compensation once we start generating revenue.

Apply Now:

Apply Now:

Apply Now:

About APF Company Limited

APF Company Limited is a Hong Kong headquartered blockchain ecosystem fund focused on strategic investments and active trading strategies in liquid cryptocurrency markets.

Overview

We’re seeking a talented Founding Quantitative Developer to join our Hong Kong team, where you’ll play a pivotal role in building and refining tools for cryptocurrency trading and blockchain integration. You’ll develop algorithms, integrate with decentralized finance (DeFi) platforms, and optimize systems for performance. This is an exciting opportunity to apply your technical expertise in a high-impact role, with rewards tied to the team’s success in a dynamic market.

Key Responsibilities

• Build and deploy trading algorithms to seize opportunities in cryptocurrency markets, ensuring scalability and efficiency.
• Integrate trading systems with DeFi protocols, developing secure smart contracts to enable automated strategies.
• Optimize low-latency infrastructure to support high-frequency trading in volatile market conditions. Monitor and enhance existing tools, proactively identifying areas for improvement to maintain a competitive edge.
• Collaborate with team members to design robust solutions, sharing insights to drive innovation. Keep pace with blockchain advancements, ensuring our systems align with evolving DeFi standards and protocols.

Qualifications

Education:

• Bachelor’s, Master’s, or Ph.D. in a quantitative field such as Computer Science, Mathematics, Physics, Engineering, or Economics from a reputable institution.

Work Experience:

• 2-5 years in a related field.

Technical Skills:

• Strong programming skills in Python (required) and C++ or similar languages (preferred) in Linux-based environments.
• Experience with data structures, algorithms, and writing efficient, well-documented code. Knowledge of Solidity for smart contract development and familiarity with blockchain concepts (e.g., web3, decentralized networks).
• Comfort with APIs (e.g., REST, WebSocket) and cryptographic techniques for secure integrations. Blockchain & DeFi:
• Understanding of DeFi ecosystems, including protocols like Uniswap, Aave, or similar platforms. Ability to develop and audit smart contracts for reliability and security.

Mindset & Attributes:

• Curiosity and enthusiasm for cryptocurrencies, trading, and blockchain technology.
• Sharp analytical skills with a knack for solving complex technical challenges.
• Ability to thrive under pressure, adapting quickly to shifting priorities.
• Collaborative spirit, eager to contribute ideas and learn from others.
• Strong sense of ownership, delivering high-quality work with precision.

Nice-to-Haves

• Experience trading cryptocurrencies or working with financial markets.
• Familiarity with high-frequency trading systems or market data analysis.
• Exposure to tools like SQL, bash, or cloud-based DevOps workflows.
• Contributions to open-source blockchain projects or a portfolio of DeFi-related work.

Protofire is looking for an enthusiastic Middle/Senior Fullstack Developer who is deeply passionate about the Web3 space. Join our dynamic team engaged in projects with renowned companies such as (ex. Gnosis) Safe, Uniswap, Compound, Moonbeam, Cronos, Harmony, Oasis, Wemade, ImmutableX, Optimism, zkSync, zkScroll, Lido, ETH Foundation and over 20 others.

How you will make an impact:

• Develop both back-end and front-end web services and products across various blockchains and ecosystems, primarily EVM-compatible, catering to millions of web3 users.
• Gain a comprehensive understanding of the business aspects of projects and enhance them with innovative features and functionalities.
• Engage in effective communication with network/platform owners and the ecosystem community, actively contributing to the broader adoption of web3.
• Contribute significantly to the open-source community.

What you need to succeed:

• 5+ years of experience in software engineering.
• 3+ years of commercial development experience with JS/Typescript, and any (the more the better) of the following: Node.JS, Go, Rust, Python.
• Proficiency with Postgress, MongoDB and/or nonSQL.
• Knowledge about how a blockchain works, preferably Ethereum is a must.
• Experience with Solidity.
• Experience with some of the following libraries and utils: hardhat, web3.js, ethers.js, web3.py, storybook, etc.
• Experience in AWS.

• A desire to keep up with blockchain technology trends, readiness to research new, and a real interest in decentralization.

Apply Now:

MEMEFI is hiring a MOVE developer for a 3 month contract to assist with building a full stack web3 protocol on SuiNetwork

• Ideal candidate will be available for up to 40 hours per week (flexible hours during EU, Asia or US timezones)
• The protocol has already been already in development for several weeks. You will be working directly with our CTO and another Move in-house developer to help accelerate the development process.

Qualifications:

• Minimum 6-12 months+ of developing Move smart contracts and contract level logic with complex, innovative elements
• Understanding of DeFi, AMM, CLMM
• Understanding of complex onchain rewards models
• Bullish AF on SUI and Mysten_Labs 

After yesterday's Telegram/TON announcement, MemeFi is doubling down on the Sui Ecosystem to accelerate development, fully convinced that the right choice was made all along.

Sui community, do your magic with some chad referrals if available :)

Apply Now:

Apply Now:

👋 GM

We are OpenCover — our mission is to keep the world safe onchain.

OpenCover operates at the intersection of blockchain security and insurance. Working in tandem with leading underwriters and industry players, we protect individuals, businesses and institutions against onchain risks such as malicious transactions, smart contract exploits and depegs.

Founded by Y Combinator alums, our team is backed by Tier 1 investors including Alliance, Coinbase Ventures (Base Ecosystem Fund), NFX, Village Global and Orange DAO, with support from the Lloyd’s of London Lab.

Want to join a high-performance, high-integrity team taking onchain safety to the next level? Read on.

🚀 Your role

You would join the founding team to develop core backend infrastructure working closely with our CTO. Your role would focus on expanding the first transaction security layer to insure billions in value. The work involves collaborating with top protocols and industry players to prevent incidents like the ByBit hack from ever happening again.

Areas you’ll work on

• Soft auditing and semantic modelling of leading protocol designs and functions.
• Designing, implementing and backtesting transaction validation checks.
• Developing asset pricing and transaction risk models.
• Tracking exposure and other insurance metrics in real-time.
• Iterating and expanding our API based on customer feedback.
• Staying up to date with industry trends including EIPs and security incidents.

You’d be a great fit if

• You’re a generalist who quickly embraces new technologies and challenges with a passion for building products from the ground up in a collaborative, tight-knit team.
• You go all out to use your knowledge and work well autonomously but know when to reach out for support.
• You have 5+ years of full-time experience developing and shipping backend services with Node.js and TypeScript.
• You’ve designed, implemented and/or audited smart contracts on EVM-compatible chains and have hands-on experience using DeFi.
• You’re familiar with PostgreSQL, messaging brokers, AWS/GCP, Docker, Bash and Linux.
• You are constantly improving your tech stack and use AI tools to accelerate development.

🙌 Our offer

• Put your dent in the universe: build products for and with some of the largest players across Web3 and TradFi.
• Directly impact company trajectory and play a key role in driving onchain adoption.
• Work IRL with the team at Lloyd’s of London 1–5 days a week— your choice!
• Flexible hours with 28 days of paid holiday plus company closure days.
• Competitive compensation based on experience + 0.1–0.5% equity.
• The equipment you need to do your best work + $1,000 for well-being and personal development each year.
• Company-paid travel to events and conferences, if that’s your thing!

Ready to apply?

Head to opencover.com/apply/bbe and get shortlisted in 10 minutes or less.

Clearpool is the leading decentralized finance credit marketplace, preparing to launch Ozean — the blockchain for RWA yield. Clearpool’s permissionless protocol enables institutions to raise unsecured liquidity directly from DeFi markets, while a separate fully permissioned platform, Clearpool Prime, further meets the compliance needs for wholesale borrowing and lending of digital assets by institutional market participants.

Launched in March 2022, Clearpool has originated over US$620 million in loans with a growing user base spanning both crypto and TradFi institutions such as Wintermute, Jane Street, Fasanara Digital, CoinShares, and others. The protocol launched on the Ethereum mainnet in March 2022, followed by the expansions to Polygon PoS, Polygon zkEVM, Optimism, Mantle Network, Flare Network, Base and Arbitrum. Clearpool is currently building Ozean, the first blockchain for RWA yield built on and supported by Optimism.

More info

Job Overview:

We are seeking a highly skilled and experienced Senior Smart contract / Rollup Engineering Lead to join our dynamic team. The ideal candidate will have a strong background in Solidity/EVM Smart contracts with a keen interest in the evolving Web3 and RWA landscape for DeFi. This role primarily involves creating, designing, and implementing smart contracts, leading and managing the rollup infrastructure (Layerzero OFT, Hyperlane, Optimism L2 stack).

Key Responsibilities:

• Must be open to working
• Has contracts on the Ethereum/EVM that have handled non-trivial amounts of funds
• Develop libraries and code to interact with smart contracts and Node backends via NodeJS
• Writing, testing, and enhancing Solidity/EVM smart contracts
• Experience with foundry and testing with Tenderly
• Proven experience with Solidity security audits & working with auditors

Qualifications:

• Fluent in English communication
• Crypto Native
• Comfortable working in the fast pace and volatility of early-stage startups
• Strong understanding of the L2 Rollups and its ecosystem, upcoming technology, and application-specific blockchains
• Excellent problem-solving skills and attention to detail
• Strong communication and teamwork skills
• 4-5+ years of hands-on experience in backend and smart contract development
• Experience with building different DeFi products is ideal

Extras:

• Past experience in contributing to or maintaining open-source projects

Pay/Tokens:

• Salary Range $100,000-$120,000 USD annually
• Competitive token incentives plan
• Paid in USD stables. Payment and tokens are to be discussed based on qualifications, experience.