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Hi, I’m Seb Sowter, a full-stack product engineer with 20+ years of experience building real-time, interactive web applications. I specialize in TypeScript, React/Next.js, and Node.js, focusing on delivering scalable, delightful UI/UX across the full product lifecycle. I love bridging engineering and design to ship robust features quickly and thoughtfully. Based in Surrey, UK, I enjoy collaborating across disciplines, mentoring teammates, and solving tough problems with modern tooling and clean code.…Hi, I’m Seb Sowter, a full-stack product engineer with 20+ years of experience building real-time, interactive web applications. I specialize in TypeScript, React/Next.js, and Node.js, focusing on delivering scalable, delightful UI/UX across the full product lifecycle. I love bridging engineering and design to ship robust features quickly and thoughtfully. Based in Surrey, UK, I enjoy collaborating across disciplines, mentoring teammates, and solving tough problems with modern tooling and clean code.

Seb Sowter

Full Stack Developer, Web Developer, UI Designer, +1

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Hi, I’m Seb Sowter, a full-stack product engineer with 20+ years of experience building real-time, interactive web applications. I specialize in TypeScript, React/Next.js, and Node.js, focusing on delivering scalable, delightful UI/UX across the full product lifecycle. I love bridging engineering and design to ship robust features quickly and thoughtfully. Based in Surrey, UK, I enjoy collaborating across disciplines, mentoring teammates, and solving tough problems with modern tooling and clean code.…Hi, I’m Seb Sowter, a full-stack product engineer with 20+ years of experience building real-time, interactive web applications. I specialize in TypeScript, React/Next.js, and Node.js, focusing on delivering scalable, delightful UI/UX across the full product lifecycle. I love bridging engineering and design to ship robust features quickly and thoughtfully. Based in Surrey, UK, I enjoy collaborating across disciplines, mentoring teammates, and solving tough problems with modern tooling and clean code.

Available to hire

Hi, I’m Seb Sowter, a full-stack product engineer with 20+ years of experience building real-time, interactive web applications. I specialize in TypeScript, React/Next.js, and Node.js, focusing on delivering scalable, delightful UI/UX across the full product lifecycle. I love bridging engineering and design to ship robust features quickly and thoughtfully.

Based in Surrey, UK, I enjoy collaborating across disciplines, mentoring teammates, and solving tough problems with modern tooling and clean code.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Software Engineer (Freelance) at Cricket8

August 1, 2024 - February 1, 2025

Delivered a React-based cricket quiz game for the ICC Champions Trophy 2025.

Frontend Developer (Contract) at OwnPlay

September 1, 2024 - Present

Built and launched a chat-based escape room game from concept to production in under six weeks using React, Firebase, OpenAI, and Gen‑AI.

Frontend Developer (Contract) at Fathom

August 1, 2022 - February 1, 2024

Built UI for a commodities trading platform for Commerzbank using React, Tan Stack (formerly React Query/Router), React Hook Form, and Styled Components; contributed to a design system and component library to improve consistency.

Frontend Developer (Contract) at Linius Technologies

September 1, 2020 - May 1, 2022

Led frontend efforts for a modular video/data platform; standardized components with Storybook, created locale-aware inputs and tooling, implemented cursor-based pagination, and built Express-based mocks for local API testing; presented progress to banking stakeholders.

Frontend Developer (Contract) at British Gas

September 1, 2018 - July 1, 2019

Collaborated with backend developers and UX designer to deliver an updated customer journey; implemented front-end flows and UI components for the new experience.

Consultant (Contract) at Sainsbury's

November 1, 2019 - August 1, 2020

Developed the frontend for the Community Hub, including submission forms for funding and a dashboard to track progress; improved UI consistency across the site, increased TypeScript adoption and test coverage, and enhanced accessibility.