Nexus - SDET (Contract, Argentina)
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Requirements
• 1–2 years of experience in software development or QA automation (internships or academic projects count) • Experience writing automated tests using JavaScript/TypeScript, Rust, or similar languages • Familiarity with testing frameworks (e.g., Jest, Mocha, Playwright, Cypress, or similar) • Basic understanding of APIs, databases, and backend systems • Strong problem-solving skills and attention to detail • Excellent communication skills in Business English (spoken & written) • Eagerness to learn about distributed systems, financial infrastructure, and blockchain technology. • Experience testing APIs or backend services. • Exposure to CI/CD tools (GitHub Actions, Docker, etc.) • Familiarity with blockchain fundamentals or smart contracts • Understanding of performance testing concepts and tools • Experience working in fast-paced startup environments
Responsibilities
• Develop and maintain automated test suites for backend services written in Node.js and Rust • Build integration and end-to-end tests covering trading flows, settlement logic, and on-chain verification • Design test cases for APIs, data pipelines, and distributed system components • Assist in implementing CI/CD pipelines to automate testing and deployment validation • Write performance and regression tests to ensure reliability under high-load conditions • Debug issues across services, reproduce bugs, and collaborate with engineers to resolve them • Contribute to improving test coverage, observability, and quality standards across the codebase.
Benefits
• Build the backend systems powering the Layer 1 for Verifiable Finance. • Collaborate with experts across blockchain, AI, and financial infrastructure. • Shape the foundation for a verifiable, transparent, global trading system. • Thrive in a fast-moving, high-impact engineering environment.
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