Fullstack Software Engineer — Node & TypeScript & React
Yousif Abdulkarim
I build scalable, modular web applications with Node, TypeScript, and React. I specialize in modular monoliths and domain-decoupled architecture.
4+ years
full-stack experience
About me
Fullstack software engineer focused on building scalable, sustainable systems.
I'm a fullstack software engineer with 4 years of professional experience, specializing in Node.js, TypeScript, and React. I focus on building modular monoliths and scalable web applications — passionate about domain decoupling and extendable, adaptable architecture.
From leading engineering at eridu-tech and FillerDepot to shipping e-commerce platforms and SDKs, I enjoy owning problems end to end — architecture, implementation, testing, and documentation.
Quick facts
- Years of experience
- 4+
- Lines of code shipped
- 30K+
- Monthly community users
- 600+
📍 Malmö, Sweden
Skills
Backend
Frontend
Databases
Testing & DevOps
Experience
Where I've worked and what I've built along the way.
Founding Backend Platform Engineer · eridu-tech (Open Source)
Aug 2024 — Present- Architect and maintain a framework-agnostic backend library ecosystem — 30K+ lines of shipped TypeScript and 100K+ total source lines.
- Built a suite of distributed-systems components: caching, distributed locking, rate limiting, circuit breakers, and an event bus.
- Engineered runtime and database integrations across PostgreSQL, MongoDB, MySQL, SQLite, and Redis.
- Delivered comprehensive unit, integration, and database tests with Docker-based CI/CD, serving ~600 monthly users.
Lead Software Engineer · FillerDepot
Oct 2025 — Present- Spearhead end-to-end full-stack development of the AMS Portal — a modular monolith automating event registration for aesthetic medicine companies.
- Digitized booth reservations, marketing assets, and stage appointments, eliminating data loss and booking conflicts.
- Integrated automated invoicing, order tracking, and real-time inventory management for clients and internal teams.
Fullstack Developer · Stride — Shopify Select Partner
Aug 2025 — Oct 2025- Worked within a three-person team, taking full ownership of independent tasks and features.
- Developed pagination and contact filtering using the Liquid templating language.
- Engineered a React-based chat widget and integrated it into a customer's CRM.
Fullstack Software Engineer · Greentake
Mar 2024 — Aug 2025- Built a custom e-commerce platform tailored to client requirements, with a fully integrated CMS.
- Implemented secure user authentication and an automated email invoicing system for checkout and payments.
- Drove organic traffic and engagement through responsive, mobile-first design and robust SEO.
Bachelor Thesis · Bionamic AB
Jan 2024 — Dec 2024- Conducted a comprehensive performance analysis comparing WebAssembly and JavaScript to evaluate optimization strategies for the Bionamic SaaS platform.
- Benchmarked algorithmic performance, proving C-compiled WebAssembly ran common algorithms 5–91% faster than JavaScript.
- Demonstrated that AssemblyScript provided conditional performance gains depending on the use case.
Degree Project · Bionamic AB
Sep 2023 — Jan 2024- Directed a five-person team building a REST API client and SDK for Bionamic, a SaaS platform driving antibody research.
- Guided technical strategy and stack selection, bridging the team's Java background with JavaScript/TypeScript expertise.
- Mentored the team on event-sourcing architecture to ensure successful implementation.
Projects
A selection of products and open-source work I've built. Click View more to dive deeper.
Outstanding Resumes
A modular resume-building platform engineered for 'majestic monoliths' — adapter & service patterns, Google OAuth, and optimistic UI updates with tRPC and React Query.
The Primitive Language
A custom programming language built from scratch with a TypeScript-based interpreter and a recursive descent parser.
Certificates
Certifications and credentials that back my skills. Click View more to see the details.
AWS Certified Developer – Associate
Amazon Web Services · 2024
Meta Front-End Developer
Meta · Coursera · 2024
Node.js, Express, MongoDB & More: The Complete Bootcamp
Udemy · 2023
GraphQL with React: The Complete Developers Guide
Udemy · 2023
PostgreSQL Bootcamp
Udemy · 2022
The Complete JavaScript Course: From Zero to Expert
Udemy · 2022
Get in touch
Have a project in mind, an opportunity to discuss, or just want to say hi? Reach out through any channel below.
Got an idea? Let's make something great together.