QA Engineer, Backend

1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets – with the self‑custody, comprehensive security and intuitive user experience they need to unlock the potential of true crypto ownership. 1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond. So if you’re someone who thinks big, moves fast and wants to make an impact right from day one, then get ready to join our industry-changing team.

We hire with a focus on Dubai and Europe. For this role, we prefer candidates who are either based in Dubai or working remotely within +/- 4 hours GST time.

• Designing, developing, and maintaining automated test suites for APIs, backend services, and smart contract interactions
• Implementing integration, regression, and end‑to‑end testing strategies for DeFi components
• Creating mocks/stubs for Web3 environments, token behaviours, and smart contract logic to ensure thorough code coverage using static and dynamic analysis tools
• Validating the integration of new DeFi protocols (e.g., AMMs, lending markets) into backend systems
• Analyzing and simulating economic behaviours, such as slippage, liquidity depth, and oracle responses
• Testing token standards (ERC
  20, ERC
  721, etc.) and smart contract edge cases
• Performing load and stress testing on backend systems that interact with blockchain nodes, while also monitoring latency and transaction throughput
• Identifying performance bottlenecks and working with engineering teams to address them
• Collaborating with the backend team to identify and reproduce issues
• Utilizing tools such as Hardhat, Foundry, Tenderly, and The Graph for contract and protocol validation

• Work with Docker, Kubernetes, and CI/CD pipelines to ensure seamless QA environments
• Prior QA experience in fintech, DeFi, or crypto projects
• Experience testing backend services
• Enterprise‑oriented mindset with a focus on structure, scalability, and quality
• Comfortable working in a Scrum‑based, agile environment
• Strong sense of ownership and proactive communication in distributed teams

• Experienced in testing systems that interact with Ethereum nodes (e.g., Geth, Infura)
• Automated testing tools in Web3 (e.g., Hardhat, Foundry, Chai, Mocha)
• Strong skills in test automation
• Integration of De‑Fi Protocols into backend systems
• Proficient in testing micro‑services architectures and asynchronous systems using message brokers like Kafka or NATS
• Familiarity with DeFi primitives (e.g., Uniswap v2/v3, Compound, Aave, Curve)

• Join a young, creative team in a fast‑paced and supportive environment
• We’re open to new ideas — if you’ve got a vision, pitch it and make it happen
• Enjoy competitive pay that matches your skills and experience
• Be part of a company that’s shaping the future of De Fi
• Take time when you need it—we offer unlimited vacation days
• Get fully compensated for your work gear—we’ll set you up for success
• Travel with us! We host an annual team retreat at a top international location

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.