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NFTeria NY New York US
Company Description At NFTeria Inc. , we empower individuals to own the future by merging innovation, security, and decentralization into seamless solutions. Our goal is to push boundaries in Web3, AI-driven authentication, and blockchain technology , helping users stay ahead in a fast-moving world. We are redefining digital ownership by building a future where trustless authentication , self-sovereign identity , and frictionless interactions are the standard. The Opportunity The time is right for this. Everything is Web3—no off-chain gaps, no compromises, just pure decentralization. We’re assembling a highly specialized team for a unique and groundbreaking project . This is an opportunity to work at

Company Description

At NFTeria Inc., we empower individuals to own the future by merging innovation, security, and decentralization into seamless solutions. Our goal is to push boundaries in Web3, AI-driven authentication, and blockchain technology, helping users stay ahead in a fast-moving world. We are redefining digital ownership by building a future where trustless authentication, self-sovereign identity, and frictionless interactions are the standard.

The Opportunity

The time is right for this. Everything is Web3—no off-chain gaps, no compromises, just pure decentralization.

We’re assembling a highly specialized team for a unique and groundbreaking project. This is an opportunity to work at the intersection of blockchain, AI, and Web3 infrastructure, where AI agents communicate with ML models, feeding predictions into automated decision-making processes that integrate seamlessly across decentralized systems.

Since there are many open positions, this post is the first step in identifying who’s who. As we refine our hiring process, we’ll focus on filling the most critical roles with top-tier talent. If you’re interested, reach out and be part of something truly special.

Open Positions

Smart Contract Specialists (9 Total)

• 3 Vyper (Ethereum-based, web3.py, MetaMask, Rabby Wallet)

• 3 Rust (Solana, Anchor framework, Phantom, Solflare Wallets)

• 3 Clarity (Stacks blockchain, Stacks.js, Hiro Wallet)

Web3 Full-Stack Developers (2 Total)

• Python, Vyper, Moccasin, Boa, Anaconda (SNAKE ENVs)

AI Agent Engineers (4 Total)

• 2 Python-based AI Agents (LangChain)

• 2 TypeScript-based AI Agents (ElizaOS)

Machine Learning Developers (2 Total)

• Time Series Forecasting, TensorFlow, Scikit-Learn, Keras, Python

Frontend Developers (2 Total)

• Vanilla CSS, HTML, TypeScript, modular code

Stack-Specific Tooling

• Clarity (Stacks blockchain) → Uses Stacks.js for frontend interactions + Hiro Wallet

• Ethereum-based (Vyper) → Uses web3.py + MetaMask, Snaps

• Solana (Rust) → Uses Anchor framework + Phantom, Solflare Wallets

• Bitcoin L2s → Uses Stacks.js or other Bitcoin-native tooling + Xverse, Leather Wallet

Role Description

This is a full-time remote role for Blockchain Developers at NFTeria Inc. Responsibilities include:

Developing and securing blockchain solutions across multiple chains.

Integrating AI-driven authentication via computer vision & decentralized identity models.

Building seamless, trustless interactions between AI agents, ML models, and smart contracts.

Working with cryptography, back-end web development, and scalable decentralized architecture.

Qualifications

• Expertise in Blockchain & Smart Contract Development (Solidity, Vyper, Rust, Clarity).

Cryptography & Decentralized Identity (DID) solutions experience.

Proficiency in AI-driven authentication (computer vision, ML-based fraud detection).

Deep experience in Web3 tooling, wallets, and frameworks.

Strong problem-solving & analytical skills in a high-speed, innovation-driven environment.

Why Join?

  • This is a special project, an opportunity to be part of something revolutionary. We’re moving fast—if this excites you or you know someone who would be a great fit, share this post and let’s build the future together. 🚀

Apply Now:

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Molecule Berlin, Germany
Molecule is at the heart of the Decentralized Science (DeSci) movement where biotech and blockchain meet to democratize scientific research, earning recognition and support from key figures in the web3 world, including Vitalik Buterin, Balaji, and Juan Benet. We're known for creating VitaDAO, the first and largest biotech DAO with more than $4m in funding deployed, bio.xyz, a vital hub supporting and building biotech DAOs, the IP-NFT, a protocol bringing rights to IP and R&D data on-chain, and IPTs, ERC-20 tokens minted from IP-NFTs to allow token holders to construct and cultivate valuable IP. We’ve also recently launched launchpad, a platform to launch, discover, and fund the best projects in DeSci. Over the past 24 months, we have raised $20+ million to build the future of decentralized biotech. Join us and contribute to a future where scientific discovery is driven by web3. About Us BIO.xyz is at the forefront

Molecule is at the heart of the Decentralized Science (DeSci) movement where biotech and blockchain meet to democratize scientific research, earning recognition and support from key figures in the web3 world, including Vitalik Buterin, Balaji, and Juan Benet. We're known for creating VitaDAO, the first and largest biotech DAO with more than $4m in funding deployed, bio.xyz, a vital hub supporting and building biotech DAOs, the IP-NFT, a protocol bringing rights to IP and R&D data on-chain, and IPTs, ERC-20 tokens minted from IP-NFTs to allow token holders to construct and cultivate valuable IP. We’ve also recently launched launchpad, a platform to launch, discover, and fund the best projects in DeSci.

Over the past 24 months, we have raised $20+ million to build the future of decentralized biotech. Join us and contribute to a future where scientific discovery is driven by web3.

About Us

BIO.xyz is at the forefront of the Decentralized Science (DeSci) revolution. We are building the next-generation financial layer to accelerate biotech innovation by decentralizing funding, coordination, and governance of scientific IP. Our mission is to empower researchers, universities, and companies worldwide to commercialize the best science faster through blockchain technology.

With our protocol, BIO.xyz enables funding, development, and governance of tokenized scientific intellectual property (IP), fostering a thriving ecosystem of biotech DAOs and IP assets. Join us to reshape the future of science and innovation!

Your Role

At BIO.xyz, we are building the future of decentralized science (DeSci). Our platform connects autonomous agents to cutting-edge labs and smart contract-based treasuries, enabling researchers and agents to collaborate, innovate, and push the boundaries of scientific discovery. We are looking for a passionate Full Stack Developer to bring this vision to life.

What You'll Be Doing

  • Platform Development: Design and build scalable, modular front-end and back-end systems for the Bio Protocol platform.

  • Web Application: Create intuitive UIs for researchers and agents to submit tasks, manage funding, and view experiment outcomes.

  • Blockchain Integration: Develop and integrate Ethereum smart contracts (Layer 1 or Layer 2) into the platform for $BIO token transactions, staking, and rewards.

  • API Layer: Build RESTful or GraphQL APIs to connect the front-end interface with agent harnesses and external lab resources.

  • Database Management: Implement decentralized and traditional databases to store metadata, reputation scores, and task logs.

  • Security: Ensure all platform components adhere to the highest security standards, including encryption, authentication, and transaction safety.

What We’re Looking For

  • 3+ years in fullstack development

  • Proven experience with blockchain technology (Solidity, Hardhat, or similar

  • Proficiency in JavaScript/TypeScript, Node.js, React.js/Vue.js, and Python

  • Experience with database systems like MongoDB, PostgreSQL, or IPFS

  • Knowledge of smart contract development and integration (e.g., ERC-20, staking mechanisms)

  • Understanding of Ethereum Layer 2 solutions (Polygon, Optimism, Arbitrum)

  • Enthusiasm for decentralized systems, DeSci, and innovation in research

  • Experience in integrating AI/ML models with web applications preferred

  • Contribution to open-source projects in blockchain or scientific domains is a big plus

Why Join Us?

At BIO.xyz, you’ll be part of an innovative, mission-driven startup that’s disrupting the world of decentralized science. If you’re passionate about pushing boundaries and creating real-world impact, this is your opportunity to shape the future of research and innovation.

Here, you’ll work alongside a skilled, fast-paced team that thrives on creativity, collaboration, and bold ideas. You’ll be challenged, inspired, and empowered to bring your best work every day.

  • HODL: You’re not just taking a job — you’re joining a movement. Every project you contribute to directly impacts the future of science and technology.

  • WAGMI: We reward most full time positions with token equity and give you the opportunity to co-author future DeSci standards.

  • Alpha: In our young, fast growing team, your voice matters. You’ll have the chance to shape not only your future but also the future of science research and innovation.

If you’re ready to take on big challenges, work with brilliant minds, and create something that matters, LFG - BIO.xyz is the right place for you!

We are an equal opportunity employer. We are committed to equality and weaving a community that values diverse perspectives and experiences and are actively seeking a diverse pool of applicants. All employment decisions are made without regard to race, colour, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, genetic information, religion, disability, medical condition, pregnancy, marital status, family status, veteran status, or any other characteristic protected by law.

Apply Now:

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Nethermind Remote
What are we all about? We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems. Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering. Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more. Today, we are a 350+ strong team working remotely across 66+ countries. View all our open positions here: https://www.nethermind.io/open-roles The Nethermind team is seeking a experience Software engineer wit

What are we all about? We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems. Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering. Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more. Today, we are a 350+ strong team working remotely across 66+ countries. View all our open positions here: https://www.nethermind.io/open-roles The Nethermind team is seeking a experience Software engineer with a background in confidential computing. We offer a unique opportunity to work on a variety of diverse projects where strong experience, knowledge and understanding of secure computing platforms is a must. The candidate will be working cross-functionally across the company partnering with our product teams to implement solutions in secure environments in a broad array of applications of use cases from AI through to Finance. The role requires a balance of technical expertise, research mindset, as well as practical engineering skills to take innovative ideas into production. How to Know If You're the Right Fit If you're driven by complex challenges and excited by the prospect of working with cutting-edge technologies, this role is for you. We're looking for individuals who are not just engineers but innovators—those who are eager to collaborate with the best minds in the industry and make a significant impact on the future of technology. Why This Role Is Exciting

Work with the Best: Collaborate with some of the brightest engineers and researchers in the industry. Innovative Challenges: Tackle projects that require deep algorithmic thinking and advanced design. Impactful Work: Contribute directly to the development of technologies that push the boundaries of what's possible. Collaborative Environment: Partner with leading developers and researchers shaping the future of decentralized technologies.

Responsibilities:

Collaborating with engineers across the company on all stages of projects, through design, implementation and testing. Partnering with teams across the company from Product through to Engineering to apply your skills to solutions integrating confidential computing. Contribute to product documentation. Maintain, test and release new and existing confidential compute infrastructure.

Skills:

Experienced shipping new products all the way through the product stack. Proficiency with developing in C++. Experience with Rust or JavaScript. Knowledge of Trusted Execution Environments (e.g. SGX, TDX, TrustZone, NVIDIA Confidential Compute). Familiarity with web protocols (HTTP, QUIC). Understanding of the CI/CD developer pipeline and tools (Github, VSCode, Linux).

Nice to have:

Understanding of distributed consensus algorithms and cryptography concepts (e.g. Zero-Knowledge). You can think independently, with drive and initiative, even when challenged and under pressure. You can communicate complex concepts and ideas to a broad array of audiences. You have a strong interest in distributed systems, privacy technologies, blockchains and cryptocurrencies. Disclaimer: I hereby consent to my personal information being stored and processed by Demerzel Solutions Limited (t/a Nethermind) (the “Company”) for recruitment purposes in relation to both the selected job role and any other role the Company considers me a qualified candidate for. All data storing and processing by the Company takes place in accordance with the UK GDPR. Kindly refer to our privacy policy for more details. Your consent to share personal information is entirely voluntary, and you may withdraw your consent at any time. Should you have any questions about this process, or wish to withdraw your consent please contact: email Keep up to date on what we are working on by following us on our social channels       Click here to view our Privacy Policy.

Apply Now:

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Gauntlet US
Gauntlet leads the field in quantitative research and optimization of DeFi economics. We manage market risk, optimize growth, and ensure economic safety for protocols facilitating most spot trading, borrowing, and lending activity across all of DeFi, protecting and optimizing the largest protocols and networks in the industry. As of January 2025, Gauntlet manages risk and incentives covering over $35 billion in customer TVL. Gauntlet continually publishes cutting-edge research that informs our risk models, alerts, and analysis, and is among the most cited institution — including academic institutions — in terms of peer-reviewed papers addressing DeFi as a subject. We’re a Series B company with around 75 employees, operating remote-first with a home base in New York City. Gauntlet’s mission is to drive adoption and understanding in the financial systems of the future . Building with decentralized systems creates novel challenges f

Gauntlet leads the field in quantitative research and optimization of DeFi economics. We manage market risk, optimize growth, and ensure economic safety for protocols facilitating most spot trading, borrowing, and lending activity across all of DeFi, protecting and optimizing the largest protocols and networks in the industry. As of January 2025, Gauntlet manages risk and incentives covering over $35 billion in customer TVL.

Gauntlet continually publishes cutting-edge research that informs our risk models, alerts, and analysis, and is among the most cited institution — including academic institutions — in terms of peer-reviewed papers addressing DeFi as a subject. We’re a Series B company with around 75 employees, operating remote-first with a home base in New York City.

Gauntlet’s mission is to drive adoption and understanding in the financial systems of the future. Building with decentralized systems creates novel challenges for mechanism designers, smart contract developers, and end-users of financial products, which are not seen in traditional software development and investing contexts. Gauntlet is dedicated to enhancing our industry’s understanding of this new domain and revealing how to safely navigate the true bleeding edge of 21st-century financial innovation.

We are looking for engineers for a few projects! See below:

Pivot/Courier Services

We’re developing an algorithmic trading platform to optimize strategies Gauntlet oversees on-chain to capture opportunities across DeFi. We’re looking for a product-focused systems generalist to work with users to define requirements and build the system’s required components!

Data & Models

We develop & own the services that power Gauntlet’s platform, including all our model capture, infrastructure, deployments & tools to support & scale our systems!

Responsibilities

  • Design, build, and maintain robust, scalable systems for data from DeFi protocols, blockchain networks, and various other data sources
  • Contribute to making our platform world-class
  • Collaborate with stakeholders to understand their system requirements and provide the necessary support to help their productivity.
  • Implement quality control measures to ensure system integrity and quality
  • Actively participate in code and design reviews, providing constructive feedback to peers and maintaining high coding standards
  • Keep up-to-date with the latest industry trends, technologies, and best practices to ensure the continuous improvement of the platform
  • Contribute to the creation of technical documentation and user guides
  • Troubleshoot, diagnose, and resolve software defects, ensuring optimal system performance and reliability

Qualifications

  • At least 4 years of professional development experience. More is better but we’re flexible
  • Experience with building backend systems.
  • Experience developing production-quality software in high-performance languages. We currently use Python and Typescript but are open to exceptional language agnostic candidates.
  • Experience with dynamic isolated environments and operational alerting
  • Experience with distributed data processing frameworks and related technologies such as Kafka, Spark, Flink, etc.
  • Ability to quickly internalize abstract concepts in new domains, coupled with strong problem-solving skills and attention to detail.
  • Ability to work independently and within a team, manage multiple projects, and meet deadlines.
  • Strong communication skills and the ability to work collaboratively in a distributed team environment
  • Interests or passion for DeFi and the broader crypto ecosystem, with a willingness to immerse oneself in the space.

Bonus Points

  • Experience working in the crypto industry is a plus but is not required.
  • Background in working with complex data sets in data-rich environments
  • Experience with languages and tooling related to complex streaming problems
  • Familiarity with cloud solutions like Google Cloud Platform or AWS

Benefits and Perks

  • Remote first - work from anywhere in the US & CAN!
  • Competitive packages with the added opportunity for incentive-based compensation
  • Regular in-person company retreats and cross-country “office visit” perk
  • 100% paid medical, dental and vision premiums for employees
  • Laptop provided
  • $1,600 WFH stipend upon joining
  • $100 per month reimbursement for fitness-related expenses
  • Monthly reimbursement for home internet, phone, and cellular data
  • Unlimited vacation policy
  • 100% paid parental leave of 12 weeks
  • Fertility benefits

Please note at this time our hiring is reserved for potential employees who are able to work within the contiguous United States and Canada. Should you need alternative accommodations, please note that in your application.

The national pay range for this role is $160,000 - $200,000 plus additional On Target Earnings potential by level and equity in the company. Our salary ranges are based on paying competitively for a company of our size and industry, and are one part of many compensation, benefits and other reward opportunities we provide. Individual pay rate decisions are based on a number of factors, including qualifications for the role, experience level, skill set, and balancing internal equity relative to peers at the company.

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Nethermind Remote
What are we all about? We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems. Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering. Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more. Today, we are a 350+ strong team working remotely across 66+ countries. About Starknet is the fastest-growing network in terms of new developers joining th

What are we all about?

We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems.

Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering.

Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more.

Today, we are a 350+ strong team working remotely across 66+ countries.

About

Starknet is the fastest-growing network in terms of new developers joining the network. Nethermind builds many developer-facing tools that need to work seamlessly in this fast-paced blockchain. This ecosystem needs contributors with a quality mindset, capable of applying their craftsmanship and systematic creativity to improve its components. Your software engineering experience and ability to rally developers around you could mean the difference between a flawless network upgrade and a community forking event. Do you have what it takes?

As a Blockchain Data Engineer, you will be responsible for extracting on-chain data from various PoS networks. You will be the reference within the company to provide reliable data necessary to perform multiple analyzes and to produce reporting and invoicing.

Responsibilities:

  • Run a scalable, efficient blockchain indexed data platform
  • Extract, Transform and Load data from blockchain RPCs
  • Assist with data analysis queries
  • Design database schema that is performant, scalable, and maintainable
  • Interact with the product teams to provide data and build the applications they are requesting
  • Interact with field experts and answer internal/external questions related to data extraction
  • Build cloud infrastructure to support data engineering efforts.

You Have:

  • Experience/strong interest in blockchain
  • Proficient with Python and at least one of the followingJavaScript/TypeScriptGolang, or Rust.
  • Strong understanding of distributed systems, Restful APIs and hands-on experience with JSON-RPC endpoints
  • Experience with writing infrastructure as code for cloud deployments and microservices for task automation.
  • Proven success in communicating with users, other technical teams, and senior management to collect requirements, and describe data modeling decisions and data engineering strategies
  • Comfort with writing & optimizing SQL queries

Nice to have:

  • Experience working with data-pipeline engines (Airflow, Dagster)
  • Experience working with big data query engines (Apache Spark, Trino, Presto)
  • Experience building reliable infrastructure on the Cloud (AWS, preferred, GCP, Azure) or willing to do so.
  • Experience in fault-tolerant infrastructure & real-time system monitoring
  • A genuine interest in the functioning of the networks you are working with
  • General knowledge of how PoS consensus mechanisms work
  • Experience with Terraform or infrastructure as a code

Perks and benefits:

  • Fully remote
  • Flexible working hours
  • Plus equity

Keep up to date on what we are working on by following us on our social channels:

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Nethermind Remote
What are we all about? We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems. Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering. Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more. Today, we are a 350+ strong team working remotely across 66+ countries. *How to Know If You’re the Right Fit If you live for deep, mind-bending p

What are we all about?

We are a team of builders and researchers on a mission to empower enterprises and developers worldwide to access and build on decentralized systems.

Our expertise covers several domains: Ethereum and Starknet protocol engineering, layer-2, AI, cryptography research, protocol research, decentralized finance (DeFi), security auditing, formal verification, real-time monitoring, smart contract development, and dapps and enterprise engineering.

Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, Starknet Foundation, Gnosis Chain, Flashbots, Forta Protocol, Lido, EigenLayer, Open Zeppelin, RISCZero, Aleph Zero, and many more.

Today, we are a 350+ strong team working remotely across 66+ countries.

*How to Know If You’re the Right Fit

If you live for deep, mind-bending problems and take pride in building both slick frontends and rock-solid backends, keep reading. We’re looking for engineers who don’t just code—they innovate. Those who own their projects from end to end and constantly push for better performance, better architectures, better everything.

Why This Role Is Exciting

  • Work with A-Players: Our engineering and research teams are some of the best in the space—prepare to level up by collaborating with them daily.
  • Big Impact, Big Ownership: You’ll architect, build, and deploy systems that could redefine how people experience blockchain products.
  • Cutting-Edge Tech: You won’t be stuck with legacy systems—expect a steady flow of new protocols, frameworks, and (optional) AI integrations to keep things fresh.
  • Collaborative Culture: We take our work seriously—but we also believe in having fun, sharing memes, and celebrating each other’s wins.

What You’ll Be Doing

1. Fullstack Wizardry

  • Frontend Mastery: Craft high-performance, modern React (or similar) applications that delight users and scale smoothly.
  • Backend Engineering: Design APIs (REST or GraphQL), optimize database interactions (SQL/NoSQL) and build robust cloud-native services.

2. Deep System & Algorithmic Design

  • Architect for Scale: Sketch out microservices, data pipelines, and other high-availability solutions that can grow with our user base.
  • Optimize & Refine: Spot performance bottlenecks and kill them before they kill us.

3. Leadership & Collaboration

  • Code Reviews & Mentorship: Uphold high standards by giving and receiving thoughtful, constructive feedback.
  • Cross-Functional Input: Work closely with product, design, and DevOps to ensure seamless rollouts and robust production systems.
  • Innovation at the Core: Research emerging tech—especially blockchain protocols and AI—and propose how we can wield them.

4. Continuous Improvement

  • Experiment & Iterate: Pilot new tools, frameworks, or processes. If it makes us better, let’s do it.
  • Own It End-to-End: From the first line of code to the final deploy, you’re responsible for delivering secure, stable, and high-quality solutions.

What We’re Looking For

1. Proven Experience

  • Multiple Years in professional software development. You’ve tackled complex, large-scale projects and thrived.
  • Fullstack Expertise: From writing impeccable React components to designing backends in Node.js, GO, Rust or Python.

2. Technical Chops

  • System Design & Architecture: You know how to build services that won’t break under pressure—microservices, caching strategies, database sharding, you name it.
  • Performance Focus: Terms like “high throughput” and “low latency” aren’t just buzzwords to you; they’re part of your daily vocabulary.
  • Best Practices: You never skip tests, you don’t do “quick hacks,” and you treat CI/CD pipelines like your best friend.

3. Mindset & Soft Skills

  • Ownership & Drive: You see problems and can’t help but fix them.
  • Team Player: You communicate clearly, listen actively, and love a good brainstorming session.
  • Always Growing: You stay up-to-date with tech trends and are curious about areas like blockchain, AI or Quantum computing.

Bonus Points For

  • Blockchain Know-How: Familiarity with smart contracts, DeFi protocols, or web3 libraries.
  • AI Curiosity: Even if it’s just side projects or tinkering with AI agents, we love that forward-thinking spirit.
  • Small Team Leadership: If you’ve led a tight-knit group of devs, share those stories!

What’s in It for You

  • Serious Impact: Your code and ideas will shape next-gen decentralized solutions used by an ever-growing community.
  • Learning on Steroids: Our projects span everything from cutting-edge blockchains to AI enhancements—there’s always something new to dive into.
  • Flexible & Remote: We trust you to do your best work from wherever you are, on your own schedule.
  • Top-Notch Compensation: We offer a competitive salary + potential for equity—because top talent deserves top rewards.

Ready to Raise the Bar?

We’re not after a flood of CVs. We want the CV—one that demonstrates a passion for solving tough problems, building epic fullstack solutions, and pushing boundaries. If you’re that person, we can’t wait to talk.

Keep up to date on what we are working on by following us on our social channels:

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SORAMITSU Shibuya City Tokyo Japan
is an award-winning global financial technology company with expertise in developing blockchain-based solutions for digital asset and identity management. Our mission is to use blockchain to promote innovation and solve pressing societal challenges. SORAMITSU is the developer of and major contributor to the open-source blockchain platform Hyperledger Iroha, which is tailored for enterprise and public-sector use. Hyperledger Iroha, a project of Hyperledger Foundation, part of the Linux Foundation, has a permissions system that is scalable and performant. Utilizing blockchain, SORAMITSU has developed a digital currency for the National Bank of Cambodia, a CBDC Proof-of-Concept with the Bank of the Lao PDR, a closed-loop payment system for the University of Aizu in Japan, an identity verification system prototype for Bank Central Asia in Indonesia, we were finalists in the Monetary Authority of Singapore CBDC Challenge, and are current
is an award-winning global financial technology company with expertise in developing blockchain-based solutions for digital asset and identity management. Our mission is to use blockchain to promote innovation and solve pressing societal challenges.

SORAMITSU is the developer of and major contributor to the open-source blockchain platform Hyperledger Iroha, which is tailored for enterprise and public-sector use. Hyperledger Iroha, a project of Hyperledger Foundation, part of the Linux Foundation, has a permissions system that is scalable and performant.

Utilizing blockchain, SORAMITSU has developed a digital currency for the National Bank of Cambodia, a CBDC Proof-of-Concept with the Bank of the Lao PDR, a closed-loop payment system for the University of Aizu in Japan, an identity verification system prototype for Bank Central Asia in Indonesia, we were finalists in the Monetary Authority of Singapore CBDC Challenge, and are currently participating in Asia-Pacific's first proof-of-concept test of a cross-border, multi-currency security settlement system using distributed ledger technology with the Asian Development Bank. We have also conducted proof-of-concept tests for several major Japanese enterprises, and are active contributors to open source projects, such as Klaytn, South Korea's leading Layer-1 blockchain, KAGOME, the C++ Polkadot Host implementation, the SORA crypto-economic system, the Polkaswap DEX, and the DeFi wallet, Fearless Wallet

Based on these experiences, SORAMITSU aims to deploy cutting-edge technology on a global level in order to expedite financial inclusion and health, mitigate economic inefficiencies, and contribute to the fulfilment of the Sustainable Development Goals.

You can find out more by visiting our homepage at soramitsu.co.jp or check out our Twitter profile.

We are seeking a highly skilled blockchain developer with deep expertise in blockchain technologies and smart contract development, focusing on Solidity, Ethereum, and various Layer 1 and Layer 2 protocols. This role will involve designing, implementing, and optimizing secure and scalable blockchain solutions.

You will be responsible for:

  • Develop, deploy, and maintain secure, efficient, and scalable smart contracts on Ethereum and other blockchain networks.
  • Architect decentralized systems and define smart contract standards for new projects and features.
  • Lead code reviews and provide mentorship to junior and mid-level developers.Optimize smart contract code for gas efficiency, performance, and security.
  • Collaborate with cross-functional teams including frontend developers, product managers, and security experts.Identify and mitigate security risks within smart contracts.
  • Stay up-to-date with the latest trends, tools, and best practices in Solidity and blockchain development.
  • Perform rigorous testing and auditing of contracts, and ensure all code is secure and bug-free.

Requirements:

  • 3+ years working specifically with Solidity and Ethereum-based development.
  • Deep understanding of Ethereum's architecture, smart contracts, and related technologies.
  • Proficient in Solidity, Web3.js, and Ethers.js.Experience with deploying and interacting with smart contracts on Ethereum, Binance Smart Chain, or other EVM-compatible blockchains.
  • Familiarity with common design patterns (e.g., ERC-20, ERC-721, ERC-1155) and decentralized protocols.Expertise in smart contract security practices, including common vulnerabilities (e.g., reentrancy, overflow/underflow, front-running).
  • Knowledge of decentralized finance (DeFi) protocols and their smart contract ecosystems.
  • Experience with testing frameworks (e.g., Truffle, Hardhat, Foundry).
  • Experience with CI/CD pipelines and blockchain-specific deployment strategies.
  • Ability to communicate complex technical concepts effectively to both technical and non-technical stakeholders.
  • Strong problem-solving, debugging, and optimization skills.
    Preferred:
  • Experience in developing for Layer 2 networks or alternative blockchain protocols (e.g., Optimism, Arbitrum, Polygon).
  • Familiarity with cross-chain technologies and bridging protocols.
  • Experience with smart contract auditing tools like Slither, MythX, and others
  • Experience with Polkadot ecosystem (Rust, Substrate)

General Skills:

  • Programming Languages: Solidity, JavaScript, Python, with knowledge of Rust considered a plus.
  • Blockchain Platforms: Ethereum, Binance Smart Chain, Polygon, Arbitrum, Optimism, etc.
  • Frameworks & Libraries: Truffle, Hardhat, Foundry, Web3.js, Ethers.js.
  • Security Best Practices: Smart contract auditing, vulnerability mitigation, best practices for gas optimization.
  • Collaboration Tools: Git, GitHub/GitLab, JIRA, Slack, etc.
  • Soft Skills: Strong communication in English, problem-solving, and analytical thinking.

Additional Requirements:

  • Please include a link to your GitHub profile showcasing examples of your code or repositories where you’ve contributed.

What we offer:

  • A relaxed remote-first (work from anywhere) work environment with flexible working hours
  • A permanent, full-time role with a rapidly growing international team of professionals
  • An educational budget to support your continued growth and development
  • Opportunities to attend global meetups and conferences for learning and/or speaking engagements
  • An opportunity to be a part of an award-winning team designing a better world through decentralized technologies

This is a remote position. Our distributed team is mostly spread across Europe and Asia. Team meetings are held generally during European working hours, and it is expected that you would adapt if necessary and be available accordingly.

If you have the required qualifications and are passionate about the Web3 industry, we encourage you to apply for this exciting opportunity.

SORAMITSU values diversity and is committed to providing equal opportunities for all applicants and employees. Our employment decisions, such as hiring, promotion, discipline, and termination, are based solely on an individual's qualifications, performance, and business needs. We do not discriminate against anyone on the basis of their race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other protected status under federal, state, or local law.

Apply Now:

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