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I'm John Udoumoh, a software engineer based in Coventry, UK. I lead frontend and backend development for edutech and SaaS products, focusing on scalable architectures, real-time features, and user-centric design. I'm currently pursuing an MS in Computer Science at Coventry University, building on a BEng in Computer Engineering from Covenant University. I enjoy turning ideas into robust tech, especially around AI integration, performance optimization, and cloud-based data systems.…I'm John Udoumoh, a software engineer based in Coventry, UK. I lead frontend and backend development for edutech and SaaS products, focusing on scalable architectures, real-time features, and user-centric design. I'm currently pursuing an MS in Computer Science at Coventry University, building on a BEng in Computer Engineering from Covenant University. I enjoy turning ideas into robust tech, especially around AI integration, performance optimization, and cloud-based data systems.

John Udoumoh

Web Developer, Front-End Developer, Back-End Developer, +3

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I'm John Udoumoh, a software engineer based in Coventry, UK. I lead frontend and backend development for edutech and SaaS products, focusing on scalable architectures, real-time features, and user-centric design. I'm currently pursuing an MS in Computer Science at Coventry University, building on a BEng in Computer Engineering from Covenant University. I enjoy turning ideas into robust tech, especially around AI integration, performance optimization, and cloud-based data systems.…I'm John Udoumoh, a software engineer based in Coventry, UK. I lead frontend and backend development for edutech and SaaS products, focusing on scalable architectures, real-time features, and user-centric design. I'm currently pursuing an MS in Computer Science at Coventry University, building on a BEng in Computer Engineering from Covenant University. I enjoy turning ideas into robust tech, especially around AI integration, performance optimization, and cloud-based data systems.

Available to hire

I’m John Udoumoh, a software engineer based in Coventry, UK. I lead frontend and backend development for edutech and SaaS products, focusing on scalable architectures, real-time features, and user-centric design.

I’m currently pursuing an MS in Computer Science at Coventry University, building on a BEng in Computer Engineering from Covenant University. I enjoy turning ideas into robust tech, especially around AI integration, performance optimization, and cloud-based data systems.

Skills

Experience Level

Expert

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Expert

Intermediate

Language

English

Fluent

Javanese

Intermediate

Work Experience

Software Engineer at Greynote

August 31, 2025 - September 23, 2025

Led full-stack engineering for edutech products, improving user engagement and satisfaction. Implemented features including real-time chat, in-app notifications, and financial management. Redesigned the MVP into a Progressive Web App (PWA), leading to improved SEO rankings and user experience. Integrated Greynote AI and developed algorithms for content delivery and user preferences. Developed backend architecture using Node.js and GraphQL, a scalable email server using AWS SES, and an efficient database mapping system using Mikro-ORM and PostgreSQL, enhancing system performance and reliability.

Frontend Engineer at The Boolean Technologies

September 30, 2022 - September 23, 2025

Contributed to the development and optimization of user-facing features for a large-scale product, gaining hands-on experience with production-grade React within a complex, highly performant codebase. Collaborated closely with senior engineers and cross-functional teams (UX, Backend, Product) on design, implementation, and rigorous code reviews, fostering a deep understanding of scalable architecture, accessibility standards, and user-centric development. Applied best practices in performance optimization, A/B testing, and debugging complex distributed systems, building foundational skills in delivering high-quality, impactful web applications for millions of users.

Software Engineer at Greynote

August 1, 2025 - September 23, 2025

Led full-stack engineering for edutech products, improving user engagement and satisfaction. Implemented real-time chat, in-app notifications, and financial management. Redesigned the MVP into a progressive web app (PWA), improving SEO, accessibility, and user experience. Integrated Greynote AI (a fine-tuned language model) and developed algorithms for content delivery and user preferences. Built a robust backend with Node.js and GraphQL, implemented a scalable email server with AWS SES, and designed a Mikro-ORM + PostgreSQL data mapping layer to boost performance and reliability.

Frontend Engineer at The Boolean Technologies

September 1, 2022 - September 23, 2025

Contributed to development and optimization of user-facing features for a large-scale product, using production-grade React within a complex, high-performance codebase. Collaborated with UX, Backend, and Product teams on design, implementation, and code reviews; focused on scalable architecture, accessibility, and user-centric development. Applied performance optimization, A/B testing, and debugging across distributed systems to deliver high-quality web applications for millions of users.

Software Engineer at Greynote

August 1, 2025 - September 26, 2025

Led full-stack engineering for edutech products, improving user engagement and satisfaction. Implemented key features including real-time chat, in-app notifications, and financial management. Redesigned the MVP into a Progressive Web App (PWA), leading to improved SEO rankings and user experience. Integrated Greynote AI and developed algorithms for content delivery and user preferences. Developed a robust backend architecture using Node.js and GraphQL, a scalable email server using AWS SES, and an efficient database mapping system using Mikro-ORM and PostgreSQL, enhancing system performance and reliability.

Frontend Engineer at The Boolean Technologies

September 1, 2022 - September 26, 2025

Contributed to the development and optimization of user-facing features for a large-scale product, gaining hands-on experience with production-grade React within a complex, highly performant codebase. Collaborated closely with UX, Backend, and Product teams on design, implementation, and rigorous code reviews. Applied best practices in performance optimization, A/B testing, and debugging complex distributed systems, building foundational skills in delivering high-quality web applications for millions of users.

Software Engineer at Greynote

August 1, 2025 - September 26, 2025

Led full-stack engineering for edutech products, improving user engagement and satisfaction. Implemented real-time chat, in-app notifications, and financial management. Redesigned the MVP into a PWA, improving SEO rankings and user experience. Integrated Greynote AI and developed algorithms for content delivery and user preferences. Built backend architecture with Node.js and GraphQL, a scalable email server using AWS SES, and an efficient database mapping system using Mikro-ORM and PostgreSQL to enhance performance and reliability.

Frontend Engineer at The Boolean Technologies

September 1, 2022 - September 26, 2025

Contributed to development and optimization of user-facing features for a large-scale product using production-grade React. Collaborated with UX, Backend, and Product teams on design, implementation, code reviews, accessibility, and scalable architecture. Applied performance optimization, A/B testing, and debugging of complex distributed systems.