Josh KellermanFrontend Engineer

Designed in Figma and built it with Next.js, TailwindCSS and Sanity CMS.

© 2026 Josh Kellerman
Currently at Push Gaming Ltd

Building

modern,

scalable,

user-focused

interfaces.

Based in London, I specialise in React, TypeScript, and modern frontend engineering. I enjoy building user interfaces that look and feel great, while focusing on the details that make a difference, from interactions and performance to building codebases that are easy to maintain and grow. I enjoy working where design and engineering meet to solve real problems. If you'd like to work together,  Get in touch.

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Push Gaming Ltd

Frontend Developer•   Apr 2025 - Present

Built the frontend from the ground up for a high-performance application integrated with large third-party platforms in the gaming and casino industry, working collaboratively with product, design and engineering teams.

ReactTypeScriptTailwindViteMotionVitestReact Testing LibraryWebSocketsStorybookRadix UI
Visit site

Iventis Ltd

Software Engineer | Frontend•   Jul 2024 - Jan 2025

Worked in a SaaS start-up as part of an agile team, developing key features for a visual event mapping platform supporting organisations including World Rugby and the Special Olympics.

ReactTypeScriptJavaScriptJestReact Testing LibraryCypressStyled ComponentsStorybookReduxMaterial UI
Visit site

Open Study College Ltd

Frontend Engineer•   Jun 2023 - Nov 2023

Worked in a small, fast-paced agile team, developing three server-side React applications: an e-learning platform, a large e-commerce website and recruitment website.

ReactTypeScriptJavaScriptRemixRadix UISanityStorybookSCSS
Visit site

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These are some of my favourite projects that I’ve built from scratch. I also have more projects on my GitHub.

screenshot of streamhub application

StreamHub v2

Find where you can watch any movie or tv series on any streaming service.

Next.jsTypeScriptTanstack / React QuerySCSS
View project
Screenshot of Balans application

Balans

Designed and built a personal finance web app with interactive data visualisations.

Next.jsTypeScriptTailwindRechartsFigma
View project
screenshot of planet view web app

Planetviewer

Interactive 3D models that users can view in Augmented Reality on iPhone.

ReactTypeScriptModel ViewerMotion
View project

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Hello, I'm Josh, frontend developer. 👋

In 2021, after working in various industries, I decided on a career switch & fully dedicated my spare time to learning how to code.

I quickly found a strong passion for frontend development, which led me to pursue a career in it.

Two years later, I landed my first role as a frontend engineer and have since had the privilege of working on exciting applications with three separate companies.

Recently, I’ve developed an interest in design and continue to expand my skills in that area, aiming to blend both design and development in my work moving forward.

I’m excited to keep learning and growing as I take on new challenges and explore new technologies.

In my spare time, I love working out, attending music festivals and playing football.

Contact

I’m currently working full-time as a Frontend Developer. If you have any interesting projects, or side projects you’re working on, feel free to reach out. I’m always happy to connect and collaborate.