Hi, I'm Umar Saleem a freelance full-stack developer, I help you
Turn Ideas Into Working Products Fast.
I build production-ready apps with clean code, tight feedback loops, and zero fluff.
Project Showcase
MyRA
End-to-end application build for AI research assistant tool
AI-powered research assistant that analyses interview transcripts to identify key themes. Umar developed the web application, building a Next.js frontend, an AWS serverless backend (API Gateway, Lambda, DynamoDB), and integrating Stripe payment models, turning the prototype into a production-ready SaaS platform.
Processed documents
5,000+
Users
1,000+
Into-It
Launch of personalised music extension from pre-production to Web Store
Chrome extension that replaces banner ads with personalised music notifications. It was advanced from a pre-production prototype to a stable, user-ready product through dedicated frontend development in Vue.js, including bug fixes, new features, and a major release integrating a new login system and API to enhance reliability and usability.
Users
1,000+
Webstore rating
5⋆
Canopi
Development of IoT spirulina-growing device
IoT device for growing fresh spirulina at home, developed from crude prototype through multiple functional and polished prototypes. As co-founder and CTO, responsibility was held for electronics systems, embedded software, and a supporting web application, alongside marketing websites and crowdfunding integrations—demonstrating technical leadership across hardware, software, and product development over 2.5 years.
Crowdfunded
£120k
Backers
577
Momentum 4i
Rapid build of AI-powered prospecting tool.
AI-powered software tool that scores technologies based on investment, IP activity, and market interest. Built end-to-end in four days with a Next.js frontend, AWS serverless backend (API Gateway, Lambda, DynamoDB), and Amplify hosting. Infrastructure was provisioned declaratively with CDK and maintained in a single monorepo for simplicity and speed.
Technologies assessed
500+
Development days
4
Makehub
Development of interactive school lesson platform
Web platform enabling primary school teachers to deliver hands-on design technology lessons without specialist knowledge. Built with a Next.js frontend on Render, the application featured teacher and student views, SCORM-based lesson content, and live feedback workflows—developed through lead frontend work and close collaboration with design and backend teams.
Lessons active
8
Schools live in
3
Umar Saleem
Full Stack Developer & EngineerPassionate about crafting accessible, high-performance web applications for your business.Skills
System Architecture
API Design & Integration
Authentication & Authorization
Payment & Subscription Systems
Database Design & Data Modeling
Schema Migrations & Data Integrity
Real-time Features & Webhooks
Search & Indexing
Performance Optimization
Front-End Architecture
SEO & Structured Data
CI/CD & Release Management
Technical Discovery & Scoping
Estimation & Roadmapping
Data Pipelines & ETL
Reporting & Analytics
Tools
Experience
Freelance Software Engineer - UmarSlm DevelopmentMay 2023 - Present
UmarSlm DevelopmentMay 2023 - Present
Lead Application Developer - MyRASep 2023 - Present
MyRASep 2023 - Present
Lead Developer - HackmastersMay 2023 - Present
HackmastersMay 2023 - Present
Co-Founder & CTO - CanopiOct 2020 - May 2023
CanopiOct 2020 - May 2023
Mechanical Engineering MEng - University College LondonSep 2016 - Jun 2020
University College LondonSep 2016 - Jun 2020