QA Engineer, Backend

1inch; Dubai; Hybrid; AED 257,000 - 331,000; Full time

Job summary

A leading DeFi ecosystem company is seeking a Backend QA Engineer in Dubai. The role involves driving quality strategies for backend systems, designing test frameworks, and validating smart contract integrations. Candidates should have experience in test automation, familiarity with Web3 architecture, and a background in fintech or crypto projects. Join a young, creative team and enjoy benefits like unlimited vacation days and competitive pay.

Benefits

Unlimited vacation days

Competitive pay

Fully compensated work gear

Annual team retreat

Qualifications

• Prior QA experience in fintech, DeFi, or crypto projects.
• Experience testing backend services.
• Comfortable working in a Scrum-based, agile environment.

Responsibilities

• Designing and maintaining automated test suites for APIs and backend services.
• Implementing testing strategies for DeFi components.
• Validating integration of new DeFi protocols.

Skills

Testing systems interacting with Ethereum nodes

Automated testing tools in Web3

Strong skills in test automation

Integration of DeFi protocols into backend systems

Micro-services architectures testing

Familiarity with DeFi primitives

Tools

Docker

Kubernetes

CI/CD pipelines

Hardhat

Foundry

Tenderly

The Graph

Job description

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 the 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.

Location: 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.

We are looking for a Dubai basedBackend 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.

Responsibilities

• 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.
• Analysing and simulating economic behaviours, such as slippage, liquidity depth, and oracle responses.
• Testing token standards (ERC20, ERC721, 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.
• Utilising tools such as Hardhat, Foundry, Tenderly, and The Graph for contract and protocol validation.

Requirements

• 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

Skills

• 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)

Why Work for us?

• 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 DeFi
• 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