Create flexible and precise queries that fit your needs exactly. Example:
React.js, -USA
×
Laravel, Vue.js, -Contract
×
will get you jobs that are
(React.js and not in USA) or
(Laravel and Vue.js and not Contract/Freelance).
You can mix and match any tags, negations and groups in any order. And don't worry about typos – the search is fuzzy.
About Wildcat
Wildcat is an Ethereum protocol revolutionizing on-chain credit with an innovative, undercollateralized borrowing solution. Our mission is to lead this market by enabling borrowers to create, customize, and manage credit facilities in a more transparent, efficient, and secure environment. Borrowers can tailor their credit demand to suit their needs. Designed for sophisticated participants in both traditional finance (TradFi) and DeFi, Wildcat is committed to transforming on-chain credit and unlocking more efficient, customized solutions in decentralized finance.
Working for Wildcat
As a Full-Stack Developer, you will be driving the technical evolution of Wildcat’s undercollateralized lending platform. You’ll work across the front-end and back-end while integrating Ethereum smart contracts to deliver an intuitive, secure, and high-performance user experience. Leveraging your experience in agile development and DeFi best practices, you will play a central role in shaping the platform’s architecture, features, and scalability. You’ll collaborate closely with the founding team, product manager, and other developers to ensure Wildcat remains at the forefront of on-chain undercollateralized credit innovation.
Responsibilities
Front-End Development
- Build user interfaces using React/TypeScript, creating responsive and intuitive designs.
- Maintain code quality through modular architecture, consistent coding standards, and performance optimization.
- Collaborate with designers and product managers to refine user flows and deliver new features seamlessly.
Back-End Development
- Develop Node.js services to power Wildcat’s undercollateralized lending protocol.
- Create and optimize APIs (REST/GraphQL) and integrate databases (e.g., PostgreSQL, PouchDB) for efficient data handling.
- Contribute to infrastructure decisions, including evaluating serverless vs. containerized setups and refining CI/CD pipelines.
Testing Setup
- Establish robust testing strategies (unit, integration, end-to-end) for front-end and back-end components.
- Automate testing workflows using tools like Jest, React/Vue Testing Library, and ensure consistent coverage for critical DeFi logic.
- Champion security best practices, helping to identify vulnerabilities early in the development lifecycle.
Integration with Ethereum
- Leverage ethers.js or wagmi to integrate Solidity contracts into the web application, handling wallet connections and transaction flows.
- Use Hardhat or Foundry for local development, contract deployment, and thorough on-chain testing.
- Ensure stability and security in all on-chain interactions, collaborating closely with the protocol team to maintain reliable DeFi operations.
Requirements
- Proven Full-Stack Experience: 5+ years building production-grade applications across front-end (React/Vue) and back-end (Node.js, REST/GraphQL, PostgreSQL).
- Ethereum & Web3 Knowledge: Familiarity with Solidity contracts, EVM fundamentals, and libraries like ethers.js. Experience setting up local test environments (Hardhat/Foundry) is a plus.
- Security & DeFi Mindset: Ability to design and implement secure coding practices for high-stakes financial systems, including an understanding of undercollateralized lending risks.
- Testing & Deployment Proficiency: Comfortable with automated test frameworks (Jest, Hardhat/Foundry) and modern CI/CD pipelines (GitHub Actions, Netlify/Vercel, Docker).
- Agile & Self-Directed: Demonstrated ability to handle multiple priorities, propose solutions, and deliver results within an iterative, remote-first environment.
- Collaboration & Communication: Strong written and verbal communication in a distributed team (EU time zones). Proficiency in working cross-functionally with designers, product managers, and marketers.
- Technical Leadership & Mentorship: Experience making architectural decisions, reviewing code, and guiding less-experienced developers. Stay current on Ethereum and decentralized lending trends, bringing valuable insights to the team.
What We Offer
- Impact & Ownership: Influence the direction of an innovative DeFi protocol and see your contributions directly shape the Wildcat ecosystem.
- Cutting-Edge Work: Collaborate with seasoned experts in DeFi and TradFi at the intersection of blockchain, finance, and technology.
- Remote Flexibility: Join a globally distributed team with flexible work arrangements, primarily aligned with EU hours.
- Competitive Compensation: Receive a competitive salary (in crypto or fiat) and potential equity/token allocation based on company growth.
- Growth & Development: Access to ongoing learning opportunities and a front-row seat to the latest advancements in decentralized finance.
Apply Now:
Our client is an AI-Web3 company dedicated to simplifying DeFi adoption by bridging the gap between complex blockchain interactions and user-friendly experiences. Their mission is to make decentralized finance more accessible by developing intuitive and seamless solutions for mass adoption. They work at the cutting edge of AI and blockchain to build the future of digital economies. They are an AI-Web3 team simplifying DeFi adoption through seamless on-chain interactions.
The three co-founders are all PhDs in a top-ranking university, with rich experience in both blockchain and AI. Our client has partnerships with leading investors, including IDG capital, ABCDE, and Amber group, backed by both the company’s tech and co-founders’ close personal relationship with them. They sit at the intersection between AI and Web3. Our client looks for candidates who share a similar outlook and passion to join us.The Responsibilities
- Develop Web3 DApps using TypeScript and integrate with smart contracts.
- Work with Solana and EVM for blockchain development and deployment.
- Debug and optimize smart contracts and frontend interactions. • Maintain technical documentation.
- Proficiency in TypeScript and experience with Solana/Web3.js and Ethers.js.
- Smart contract development experience in Solidity or Rust.
- Familiarity with Solana or EVM ecosystems.
- Strong problem-solving and learning ability.
- Open-source contributions of prior Web3 project experience is a plus.
The Preferred Qualifications
- Rust and Solana Anchor experience.
- Knowledge of AI or AI Agents.
- Participation in hackathons, blockchain projects, or DAOs.
Apply Now:
VDEX
Remote
About Us
VDEX is a fast-growing DeFi startup focused on building a decentralized perpetual exchange.
Powered by Virtual Rollup, 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, zero gas fees and omnichain (trade among different chains without requiring any bridge).
We are looking for a motivated Junior developer to join our tech team and help us build our platform and reshape the future of DeFi.
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.
- Understanding of blockchain fundamentals and DeFi concepts like EVM, tokens, yields.
- Familiarity with SQL (postgres), RESTful APIs, Event-driven architecture, Kafka, and microservices.
- 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
- Degree in computer science or engineering or scientific disciplines.
- 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.
POSITION SUMMARYWe are looking for a Senior Python/Golang Developer (Crypto, Blockchain) for a 100% remote, 6 month +, W-2 contract with benefits.Must be a US Citizen or Green Card Holder. No 3rd Party C2Cs Please. DUTIES AND RESPONSIBILITIES:
Overview: The project will be updating the staking systems to comply with upcoming regulatory changes. This involves updating grpc APIs, modifying airflow jobs to process large amounts of data, and writing SQL queries for data analysis. The team supports this staking products and is the team that processes these requests and distributes these rewards to the end users. There are new regulatory rules coming into effect and this team will need to update our backend systems to conform to those rules Expected to write SQL queries to do calculations on data in a data warehouse. Write SQL queries to do those calculations. Required Skills:
5+ years of experience Golang 5+ years of experience Python 3+ years of experience SQL Solid understanding of crypto (Blockchain, cryptography, wallets, Ethereum, EVM, etc.) 5+ years of experience in software engineering 5+ years of experience in backend services Strong communication skills Airflow and grpc are a nice to haves
Catalyte provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.
Catalyte is working to fill this position ASAP, so please submit your application at your earliest convenience. The hourly rate for this position will be based on the selected candidate's experience level. Our target hourly rate range is $95-95 per hour. Actual compensation is subject to variation due to such factors as education, experience, skillset, and/or location. A full slate of benefits including Healthcare, Vision, Dental, 401K, Life Insurance, Disability, and paid Time-Off (including company-paid holidays, paid sick leave, & PTO) are available to W2 Catalyte employees and additional details can be found at www.catalyte.io. Please use the apply now button to submit your application for consideration.
EXPERIENCE AND QUALIFICATIONS
COMPANY INFORMATION
Click here to access our website for more information about our company.
Apply Now:
This role is for one of the Weekday's clients
Min Experience: 3 yearsLocation: Remote (India)
JobType: full-time
We are looking for a Full Stack Blockchain Developer to join our dynamic team and play a key role in building decentralized applications and blockchain-based solutions. If you have a deep understanding of blockchain technologies, a strong command of JavaScript, TypeScript, React, Node.js, and experience working with EVM, Bitcoin, and smart contracts, we want to hear from you!What You’ll Do
- Take ownership of the quality, reliability, and availability of code being shipped.
- Oversee day-to-day operations and maintain comprehensive documentation of production features.
- Develop product features from scratch, adhering to technical standards set by the Technology Lead.
- Write clean, maintainable, and scalable code that complies with development policies.
- Participate in on-call incident response on a rotational basis, including after-hours and weekends.
- Collaborate with the Technology Head to define product architecture and document technical decisions.
- Contribute to product meetings, providing insights on architecture, design, and feature development.
- Bridge the gap between documentation and development by providing weekly feedback to the Research & Analysis team.
- Mentor and manage junior developers and interns.
What Makes You a Good Fit
- Strong expertise in blockchain technologies, including decentralized computing, DLTs, and decentralized applications.
- Proficient in JavaScript, TypeScript, and frameworks such as React, Angular, and Node.js.
- Experience with client-server architecture and development using client-side JavaScript frameworks (React Native, React.js).
- In-depth knowledge of Bitcoin, Ethereum (EVM), and other blockchain networks.
- Hands-on experience working with RESTful APIs.
- Solid understanding of data structures, algorithms, and design patterns.
- Experience coding in Solidity for smart contract development.
- Familiarity with blockchain development frameworks such as Truffle & Hardhat.
- Proficiency in NoSQL databases (MongoDB) and experience with GraphQL queries is a plus.
- Strong debugging and issue-resolution skills for frontend and backend solutions.
- Understanding of containerization tools like Docker and Kubernetes, and CI/CD pipelines.
- Experience working with cloud platforms like AWS, GCP, and keeping up with the latest trends in blockchain development.
- Knowledge of monolithic and microservices architectures.
- Proficient with Git for version control.
- Familiarity with testing frameworks such as Jest, Mocha, Chai, Karma, or Enzyme is a plus.
- Experience in writing reusable libraries.
- Contributions to open-source blockchain projects will be an added advantage.
Apply Now: