Backend Engineer (Node.JS / Typescript) - Web3 / DeFi
Architect and maintain server-side foundations for a DeFi protocol, including designing scalable APIs and optimizing database interactions. Integrate backend logic with blockchain smart contracts and ensure high code quality through testing.
- Remote
- Ottawa, Ontario, Canada
- Posted Aug 13, 2026
- 1 position
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Job summary
This is a fully remote role About the Company Venus Protocol is a leading DeFi money market on BNB Smart Chain, powering decentralized lending, borrowing, and stablecoin generation for millions of users. As one of the Top DeFi protocol with billions in total value locked, redefining open finance by making liquidity accessible, efficient, and borderless. About the role We are looking for a driven Backend Engineer to architect and maintain the server-side foundations of our DeFi protocol. You will design scalable APIs, optimize database interactions, and ensure robust integration with blockchain smart contracts. Key Responsibilities: Build and maintain backend services with NodeJS and TypeScript. Design and optimize SQL schemas and queries for performance. Implement APIs and data models with GraphQL. Integrate backend logic with smart contract interactions using Viem or ethers.js. Write high-quality, testable code with Jest or Vitest. Collaborate across distributed teams to deliver end-to-end product features. Qualifications: 3–5+ years of backend development experience. Strong expertise in NodeJS and TypeScript. Proficiency with SQL databases and GraphQL. Experience integrating with blockchain networks via Viem/ethers.js. Strong understanding of backend testing practices. Bonus: Familiarity with schema validation (Yup/Zod) or distributed system
What you’ll do
Architect and maintain server-side foundations for a DeFi protocol, including designing scalable APIs and optimizing database interactions. Integrate backend logic with blockchain smart contracts and ensure high code quality through testing.
Requirements
Requires 3-5+ years of backend experience with strong expertise in Node.js, TypeScript, SQL, and GraphQL. Candidates must have experience integrating blockchain networks using Viem or ethers.js.
Listed skills
- SQLPreferred
- Node.jsPreferred
- TypeScriptPreferred
- GraphQLPreferred
Other relevant skills
Identified from the job description. Confirm important requirements above.
- Node.js
- TypeScript
- SQL
- GraphQL
- Viem
- Ethers.js
- Jest
- Vitest
- Backend Development
- API Design
- Blockchain Integration
- Smart Contracts
- Yup
- Zod
- Distributed Systems
Job areas
- Software
- Technology
- Finance & Accounting
- Engineering
Additional details
- Minimum experience
- 2+ years
- Posting language
- English
- Working hours
- 40 hours per week
- Seniority
- Mid-Senior level
- Application method
- Direct apply is available