• 5+ years of experience in frontend development with expertise in React, JavaScript/TypeScript, HTML5, and CSS3
• Solid understanding of web browser technologies and standards: JavaScript, DOM, REST APIs, HTTP2, …
• Experience working with backend technologies, ideally Node.js/Python and single-page applications (or hybrid)
• Knowledge of front-end ecosystem tooling for linting, testing, bundling, tracking, delivering JS code and familiarity with CI/CD pipelines
• Comfortable debugging frontend-backend interactions and optimising both product and runtime performance
• Excellent communication skills and ability to work cross-functionally with product and engineering teams

Desirable

• Join a fast-growing Series A startup, powering the next generation of AI applications with advanced, open-source vector similarity search technology
• As we grow, we are looking for a Senior Frontend Engineer to take one of the leading roles in building scalable, high-performance frontend apps using React, while also working side-by-side with our backend development team in Python
• As a Senior Frontend Engineer with a full-stack mindset, you will be responsible for defining, developing and shipping key features of our React-based frontend, whilst also working side-by-side with our Python backend development team
• Collaborating in the inception, delivery and maintenance in a product cycle to deliver of a seamless user experience
• The ideal candidate will be comfortable as a full-stack developer with strong focus on the front-end core tasks, delivering excellent DX tooling, CI/CD protocols, testable modules, building on containerisation, improving performance, etc
• Frontend Development & Architecture: Design, develop, and maintain scalable, reusable frontend components using React and modern JavaScript (TanStack, OpenAPI, TypeScript, etc.)
• Define and implement best practices for frontend architecture, ensuring high-quality, clean, and performance-optimised code
• Cross-functional Collaboration & Backend Support: Work closely with backend engineers to optimise APIs and ensure smooth frontend-backend integration. Assist in Python-based backend development when necessary to support frontend features
• Mentorship & Leadership: Provide technical guidance and leadership, mentoring junior developers and establishing best practices across the team, ensuring adherence to clean, maintainable, and performance-sensitive code that scales effectively
• Infrastructure Ownership & Code Quality: Take ownership of frontend infrastructure, including deployment, security, testing, lint checks, error reporting, and code quality analysis to ensure deliverability and performance
• Collaboration with Growth Team: Occasionally work with the Growth team to deliver holistic approaches on product changes affecting churn and ROI, helping to measure, iterate, and improve based on product performance