Senior Backend Developer (Blockchain/ Dex exp) - Full-time - Worldwide

Location

Remote anywhere

Hourly rate

Min. experience

5+ years

Hours per week

40 hours

Duration

24 weeks

Required skills

Freelance job

Posted 19 hours ago

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Actively recruiting / 25 applicants

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Juliana Torrisi is in direct contact with the company and can answer any questions you may have. Email

Juliana Torrisi, Recruiter

Overview:

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We are seeking a Senior Backend Engineer with deep experience in blockchain development and decentralized trading systems. The ideal candidate will join a small, fast-moving team building a Solana-based DEX and trading terminal, helping to scale our backend, develop new features, and optimize trading infrastructure. This role is fully remote and offers the flexibility to work across time zones.

Key Responsibilities:

Build and maintain backend services for decentralized exchanges (DEX) and trading terminals.
Develop new features, including automated trading strategies and offline trading capabilities.
Work with blockchain networks, primarily Solana and EVM-compatible chains.
Implement and maintain backend APIs using TypeScript and Fastify.
Interact with blockchain networks via solana/web3.js and Ethers.js.
Ensure data integrity, reliability, and real-time performance for trading systems.
Collaborate with frontend developers, full-stack engineers, and UI/UX designers to deliver end-to-end features.

Must-Have Skills:

TypeScript and Fastify for backend development.
Hands-on experience with Solana and EVM blockchain development.
Proficiency with solana/web3.js and Ethers.js.
Experience building DEX or trading terminal applications.

Bonus / Nice-to-Have Skills:

Redis, Socket.io, pm2 for performance and real-time systems.
Zod, Vitest, MongoDB for data validation, testing, and storage.
Smart contract development and integration experience.

About the Team:

We are a small, distributed team with members in the US and Europe, focused on building innovative blockchain trading products. You will be joining a close-knit group of developers and designers who value ownership, technical excellence, and rapid iteration.