Jakub Nalewajk Fullstack Developer
Fullstack & Next.js Developer with 3+ years of experience. I build fast web applications and custom websites - from database design to deployment. Available as a freelancer or as a developer on your team.
3+
Years of experience
9+
Projects delivered
5+
Happy clients
Where I've Worked
Commercial projects I've worked on - from architecture to deployment.
Oct 2025 – Present
Remote
- Full technical ownership of the Dubai Real Estate platform. Responsible for architecture, releases, code reviews, and stakeholder communication.
- Co-designed and implemented a 4-tier Nx architecture with 5 domain modules (Next.js, Strapi CMS). Built the project's Design System (20+ components) with Ark UI and Storybook.
- Estimate tasks and translate business requirements into technical specs across projects. Delivered both Maspex milestones (2x 3 months) ahead of schedule, leaving time for polish.
- Solo frontend developer on Maspex Photo Service: rebuilt the photo service app and admin panel for a major FMCG company. Optimized bundle size by ~30%. On-time delivery led to promotion to Project Lead within 3 months.
- Created a custom component library on Shadcn UI with Turborepo and Next.js. Feature-driven development approach.
- Integrated AI-powered animation generation from prompts and images into the platform.
- Production monitoring with Sentry → Slack alerts, so the team reacts to issues instantly. Set up CI/CD checks on every PR (linting, type-checking) and Husky pre-commit hooks to catch issues early.
- Delivered a homepage redesign for the TwoContinents travel platform.
Aug 2023 – Oct 2025
Warsaw, Poland
- Built the fullstack LeadMe AI platform, a SaaS for automating customer tasks and tracking operations (React, React Query, Express).
- Created InstagoAI from scratch, an AI website builder for small businesses (Next.js, Express, MongoDB, TypeScript). Owned the full stack: auth, backend, frontend, database modeling, AI workflows.
- Developed a B2B e-commerce platform for Mezze Foods (Warsaw restaurant) on top of InstagoAI, integrated with LeadMe AI for orders, invoicing, and client messaging. Handled 3,500+ orders/month.
- Wrote an AI-powered i18n tool for CI/CD that auto-generated translations for 15+ languages across ~1,500 keys, removing manual translation work from all company projects.
Things I've Built
Tools I built for myself and use every day. Each project started because I hit a real problem and decided to solve it.
While treating gut issues with a clinical dietitian, I was juggling 20+ supplements and antibiotics across multiple protocols. Built a fullstack PWA where AI parses doctor protocols (PDF, Excel, images), links them to my inventory, and builds a daily plan - with stock forecasting, push notifications, and one-tap check-off.
Got tired of manually browsing job offers across multiple boards. Built a fullstack platform with a Turborepo monorepo - scrapes Polish job portals, generates vector embeddings with Transformers.js, and re-ranks offers against my profile. Supabase with pgvector for similarity search, all AI inference runs locally in TypeScript.
Lost track of my subscriptions - had no idea how much I was paying monthly. Built a fullstack app with MySQL + Prisma, Stripe payments for premium, currency exchange rate syncing, and spending analytics with Recharts. Tiered server actions with auth, rate limiting, and Sentry.
What I Work With
Technologies I use daily.
Frontend
Backend
DevOps
Other
Let's Work Together
Looking to hire a fullstack developer for your team? Need a custom website or web app? Drop me a message - I'll respond within 24 hours.
Send a Message
I'll respond within 24 hours.