Hybrid Senior Frontend Engineer

at Gendo

• Job title: Senior Frontend Engineer
• Job type: Full Time
• Experience level: Senior
• Salary: £70,000 - £100,000 per year
• Degree requirement: Bachelor's Degree
• Tech skills: JavaScript, MobX, Next.js, React
• Location requirements: Hybrid, London, United Kingdom

About the role

• Senior Frontend Engineer developing highly interactive React applications for Gendo's AI architecture platform. Leading frontend architecture and collaborating with product and design teams.

Responsibilities

• Leading the development and architecture of a highly interactive React (Next.js) application, working closely with product and backend teams.
• Managing complex application state and ensuring smooth UX in a real-time, collaborative environment using WebSockets for live updates and async generation results.
• Implementing 2D and 3D elements within a canvas-based UI using three.js (react-three-fiber), supporting features like image resizing and future 3D model manipulation.
• Optimising the frontend for performance and scalability, ensuring a seamless, responsive experience for users.
• Applying product design sensibility to fill in design gaps when needed, leveraging our design system to ensure visual and functional consistency.
• Collaborating closely with product and design colleagues to bring complex interactions to life and ensure consistency in visual and functional elements.
• Championing best practices in frontend development, reviewing code, and mentoring junior developers.

Requirements

• Extensive experience in building and deploying complex, production-level React applications.
• Strong proficiency in Next.js, React state management (e.g., MobX, Zustand), and component-based architecture.
• Experience with real-time data handling, ideally using WebSockets or similar technologies.
• Understanding of three.js (or WebGL in general), or a strong interest in learning and applying these technologies.
• Experience with full-stack development, particularly API design and development.
• Solid understanding of frontend performance optimisation techniques and best practices.
• Experience in designing and developing software products with l10n/i18n requirements.

Benefits

• Stock options; we firmly believe that you should share our future successes with ownership in the company.
• 25 days holiday, plus a day off during your birthday week.
• Private medical, dental and vision insurance.
• Flexible well-being allowance (e.g. gym membership)
• Frequent company socials and events