Are you ready to revolutionise the world of decentralised finance ? 1inch.io is a leading DeFi aggregator, and we're looking for a talented QA Engineer (Backend) to join our team in a crucial role. We're at the forefront of crypto innovation, building a platform that provides users with the best trading rates and liquidity across multiple decentralised exchanges.
The Role
We are looking for a Dubai based Backend QA Engineer(DeFi / Web3-focused) to own and drive the quality strategy for our DeFi backend systems. This role will involve designing robust test frameworks, validating smart contract integrations, and ensuring performance, security, and reliability across our DeFi protocol integrations. You should be deeply familiar with Web3 architecture, DeFi primitives , and have experience working in high-load environments with a strong focus on test automation .
What You\'ll Do
- Design, develop, and maintain automated test suites for APIs, backend services, and smart contract interactions
- Implement integration, regression, and end-to-end testing strategies for DeFi components
- Create mocks / stubs for Web3 environments, token behaviors, and smart contract logic
- Ensure thorough code coverage using static and dynamic analysis tools
DeFi Protocol & Smart Contract Testing
Validate integration of new DeFi protocols (e.g., AMMs, lending markets) into backend systemsAnalyse and simulate economic behaviours such as slippage, liquidity depth, and oracle responsesTest token standards (ERC20, ERC721, etc.) and smart contract edge casesCollaborate with backend team to identify and reproduce issuesPerformance & Reliability
Perform load and stress testing on backend systems interacting with blockchain nodesMonitor latency and transaction throughput under varying conditionsIdentify performance bottlenecks and work with engineering teams to address themTooling & Infrastructure
Leverage tools like Hardhat , Foundry , Tenderly , and The Graph for contract and protocol validationWork with Docker , Kubernetes , and CI / CD pipelines to ensure seamless QA environmentsCollaboration & Process
Collaborate closely with engineers, product owner and smart contract developersParticipate in sprint planning, code reviews and QA sign-offsAdvocate for quality-driven development and contribute to best practices in Web3 QAWhat You\'ve Done
Prior QA experience in fintech, DeFi, or crypto projectsExperience testing systems that interact with Ethereum nodes (e.g., Geth , Infura )Familiarity with DeFi primitives (e.g., Uniswap v2 / v3, Compound, Aave, Curve )Experience with automated testing tools in Web3 (e.g., Hardhat, Foundry, Chai, Mocha )What you\'ll Bring
Strong skills in test automationExperience testing backend servicesProficient in testing micro-services architectures and asynchronous systems using message brokers like Kafka or NATSEnterprise-oriented mindset with a focus on structure, scalability, and qualityComfortable working in a Scrum-based, agile environmentStrong sense of ownership and proactive communication in distributed teamsIf you\'re passionate about cutting-edge blockchain technology, based in Dubai with full RTW and want to help us build a secure, reliable, and user-centric future for finance, then we want to hear from you. Apply today and help build something amazing.
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