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2022 — Present
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.
Available for new opportunities
Backend Software Engineer — Node & TypeScript & React
Yousif Abdulkarim
Backend platform engineer specializing in modular monoliths, domain-decoupled architecture, and distributed infrastructure tooling.
4+ years
backend experience
TypeScript ✦JavaScript ✦Node.js ✦Bun ✦Deno ✦Express ✦NestJS ✦REST APIs ✦GraphQL ✦Event Sourcing ✦React ✦Next.js ✦Redux ✦PWA ✦Webpack 5 ✦Tailwind CSS ✦TanStack Query ✦TanStack Start ✦PostgreSQL ✦MongoDB ✦SQLite ✦Redis ✦MySQL ✦Jest ✦Vitest ✦Mocha ✦Chai ✦Playwright ✦Test Automation ✦Docker ✦AWS ✦GitHub Actions ✦SSH ✦VPS ✦Nginx ✦Adapter Pattern ✦Modular Monoliths ✦Majestic Monoliths ✦Service Pattern ✦Clean Architecture ✦Caching ✦Distributed Locking ✦Rate Limiting ✦Circuit Breakers ✦Event Bus ✦TypeScript ✦JavaScript ✦Node.js ✦Bun ✦Deno ✦Express ✦NestJS ✦REST APIs ✦GraphQL ✦Event Sourcing ✦React ✦Next.js ✦Redux ✦PWA ✦Webpack 5 ✦Tailwind CSS ✦TanStack Query ✦TanStack Start ✦PostgreSQL ✦MongoDB ✦SQLite ✦Redis ✦MySQL ✦Jest ✦Vitest ✦Mocha ✦Chai ✦Playwright ✦Test Automation ✦Docker ✦AWS ✦GitHub Actions ✦SSH ✦VPS ✦Nginx ✦Adapter Pattern ✦Modular Monoliths ✦Majestic Monoliths ✦Service Pattern ✦Clean Architecture ✦Caching ✦Distributed Locking ✦Rate Limiting ✦Circuit Breakers ✦Event Bus ✦
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About me
Backend software engineer focused on building scalable, sustainable systems.
Backend platform engineer with 4+ years of professional experience. I build modular, production-grade systems—from full-stack web applications to distributed infrastructure tooling used by 600+ monthly developers. I'm the founder and lead maintainer of eridu-tech, an open-source TypeScript toolkit for caching, rate limiting, circuit breakers, and multi-runtime adapters.
Quick facts
- Years of experience
- 4+
- Years of programming
- 8+
- Lines of code shipped
- 30K+
- Monthly community users
- 600+
📍 Malmö, Sweden
Skills
Backend
Frontend
Databases
Testing & DevOps
Architecture
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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.
- Design a modular, composable architecture based on the adapter pattern, integrating across Node.js, Bun, Deno, serverless, and edge runtimes.
- Build and ship reusable backend components for modular monoliths: HTTP routing, caching, distributed locking, rate limiting, circuit breakers, and an event bus.
- Engineer runtime and database integrations across PostgreSQL, MongoDB, MySQL, SQLite, and Redis.
- Deliver comprehensive unit, integration, and database tests with Docker-based CI/CD, serving ~600 monthly users.
- Author and maintain developer documentation for a community of roughly 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.
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Projects
A selection of products and open-source work I've built. Click View more to dive deeper.
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2023
The Primitive Language
A custom programming language built from scratch with a TypeScript-based interpreter and a recursive descent parser.
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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.