Frontend Product Engineer in City of London

Energy Jobline ZR; City Of London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A well-funded startup in London is seeking a Product Engineer focused on Frontend to design intuitive user experiences for AI evaluation. You will work closely with a team to visualize and analyze AI performance, requiring 5+ years of experience with TypeScript and React. This in-office role demands strong UI/UX design skills and a product-driven mindset, with opportunities for collaboration in a dynamic environment.

Benefits

On-site Gym

Beautiful offices

Focus areas

Qualifications

• 5+ years of professional experience building frontend products in TypeScript/React or similar frameworks.
• Strong understanding of UI/UX design principles, with a focus on clean, responsive layouts and great user experience.
• Experience with relational databases and deploying applications to modern cloud environments.
• Comfortable working in a fast-moving, highly collaborative startup environment.

Responsibilities

• Own and build core features of the platform for AI performance.
• Design intuitive end-to-end user journeys.
• Collaborate cross-functionally to translate AI capabilities into products.
• Ship full-stack features ensuring smooth performance and scalability.

Skills

TypeScript

React

UI/UX design principles

Relational databases

Python

Job description

Job Description

We are representing a well-funded startup building safe, beneficial systems that advance human progress. Backed by leading international investors and founders from some of the world’s most influential technology companies, this team is developing a next- platform for AI evaluation and reliability - empowering engineers and researchers to better understand and improve their agents. This role would suit someone who is a frontend developer, Founding Engineer, or a FullStack Engineer who is leaning towards the frontend.

The Role

As a Product Engineer focused on Frontend, you’ll help design and deliver intuitive user experiences that make AI evaluation seamless and insightful. You’ll take ownership of the customer-facing platform.

You’ll work closely with founders, engineers, and researchers to bring complex AI technology to life through elegant design and thoughtful product decisions.

Key Responsibilities

• Own and build core features of the platform that allow users to visualise, analyse, and improve AI performance
• Design intuitive end-to-end user journeys - from onboarding to detailed trace analysis
• Collaborate cross-functionally to translate cutting-edge AI capabilities into accessible, high-impact products
• Ship full-stack features when needed, ensuring smooth performance and scalability across the system

About You

• 5+ years of professional experience building frontend products in TypeScript/React or similar frameworks
• Strong understanding of UI/UX design principles, with a focus on clean, responsive layouts and great user experience
• Product-driven mindset: you think deeply about the “why” behind what you build
• Experience with relational databases and deploying applications to modern cloud environments
• Comfortable working in a fast-moving, highly collaborative startup environment

Nice to Have

• Background in developer tools, AI, or ML products
• Familiarity with modern web stacks
• Experience working in early-stage, high-growth environments
• Python knowledge is a plus

Our client values in-person collaboration and connection at their early stage. This is an in-office role - You must be able to work in Kings Cross, 4-5 Days per week. Beautiful offices, full setup, focus areas and on-site Gym.

If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.