QA Engineer Backend

1inch; Dubai; On-site; AED 120,000 - 200,000; Full time

Job summary

A leading DeFi aggregator based in Dubai is looking for a talented QA Engineer (Backend). This role involves driving quality strategy, designing robust test frameworks, and validating smart contract integrations. Ideal candidates should have QA experience in fintech or crypto and be passionate about decentrialized finance. Join us to build a user-centric future for finance.

Qualifications

• Prior QA experience in fintech, DeFi, or crypto projects.
• Experience testing systems that interact with Ethereum nodes.
• Strong skills in test automation and backend services.

Responsibilities

• Design, develop, and maintain automated test suites.
• Implement integration, regression, and end-to-end testing strategies.
• Perform load and stress testing on backend systems.

Skills

Test automation

DeFi primitives

Experience with Ethereum nodes

Micro-services architecture testing

Tools

Hardhat

Docker

Kubernetes

CI/CD pipelines

Job description

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 systems
• Analyse and simulate economic behaviours such as slippage, liquidity depth, and oracle responses
• Test token standards (ERC20, ERC721, etc.) and smart contract edge cases
• Collaborate with backend team to identify and reproduce issues

Performance & Reliability

• Perform load and stress testing on backend systems interacting with blockchain nodes
• Monitor latency and transaction throughput under varying conditions
• Identify performance bottlenecks and work with engineering teams to address them

Tooling & Infrastructure

• Leverage tools like Hardhat, Foundry, Tenderly, and The Graph for contract and protocol validation
• Work with Docker, Kubernetes, and CI/CD pipelines to ensure seamless QA environments

Collaboration & Process

• Collaborate closely with engineers, product owner and smart contract developers
• Participate in sprint planning, code reviews and QA sign-offs
• Advocate for quality-driven development and contribute to best practices in Web3 QA

What You\'ve Done

• Prior QA experience in fintech, DeFi, or crypto projects
• Experience 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 automation
• Experience testing backend services
• Proficient in testing micro-services architectures and asynchronous systems using message brokers like Kafka or NATS
• 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

If 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.