01Days 1–5
Scope
Deep-dive into your problem, users, and constraints. Define what success looks like — and what compliance demands.
Full-Stack Developer · Freelance Operator
Custom Web Apps, Built to Last.
From concept to production in 30 days. Secure, database-driven web applications engineered with EU regulation compliance and security baked in from line one.
Full-Stack
EU Compliance
Security-First
Database-Driven
AI Integration
How I work
From Idea to Production.
02Days 6–10
Design
Wireframes, user flows, and interface design. Iterate until it feels right and the data model is sound.
03Days 11–14
Specify
Lock down the technical spec. Architecture, stack, integrations, threat model — no ambiguity.
04Days 15–26
Build
Full-stack development with security and compliance baked in. Regular check-ins and shipping demos throughout.
05Days 27–30
Deliver
Testing, deployment, handoff. Full source code, infrastructure, and documentation — it's yours.
You're involved at every stage — no surprises, no black boxes.
Get started →
Capabilities
One Developer. Full-Stack.
The depth of a specialist with the range of a team — backend, frontend, data, security, and AI under one roof.
AI Integration
Frontier API integration or fully private local deployments. Right model, right architecture, right cost.
ClaudeAnthropic
GPTOpenAI
GeminiGoogle
DeepSeekDeepSeek
Local ModelsSelf-hosted · Private
Custom RAGYour data · Your infra
Full-Stack
- Frontend & backend
- REST & GraphQL APIs
- Cloud deployment
Database-Driven
- Relational & NoSQL
- Schema architecture
- Migration & scaling
Security-First
- Auth & encryption
- Input validation
- OWASP standards
Compliance
- GDPR alignment
- Data residency (EU)
- Audit-ready code
About
Technical operator with a strategic mind.
I'm a freelance full-stack developer with a background in political science and international relations — and a lifelong obsession with code. Freelancing is how I bring the two together: building software for clients who operate where policy, regulation, and technology meet.
I work equally well at either end of that spectrum, so I serve all clients — startups, agencies, NGOs, and enterprise alike. Based in Stockholm, with Copenhagen as a second base of operations.
Currently CTO of Mundus International in Stockholm, alongside my freelance practice.
- Based in
- Stockholm · Copenhagen
- Currently
- CTO, Mundus International
- Background
- Political Science · International Relations
Testimonials
In their words.
A small selection of the people who've trusted me to build, migrate, or rethink something that matters to their organisation.
Jonathan assessed our needs, scoped available and relevant solutions, and implemented the migration change quickly and effectively. His thorough approach meant we were able to quickly make a decision about the best approach for our organisation. He was proactive in suggesting ideas that he recognised would improve the process. I, and the board of the ABCS, would highly recommend Jonathan — he understood the brief and our needs and went over and beyond to solve the problems.
Sarah Coats Chandler
Head of Communications
Australian Business Council of Scandinavia
What sets Jonathan apart is his ability to get across technical specifications and implementation paths, and then translate all of that into clear language that C-suite stakeholders can actually understand. That ability to move between the engineering detail and executive decision-making is rare, and it's incredibly valuable. I would not hesitate for one second to recommend him to anyone.
James Barclay
Founder
Ydun
Jonathan combines ambition and talent with professionalism and a strong problem-solving mindset. He has been instrumental in developing what is now a critical core tool for our day-to-day operations. I can confidently recommend Jonathan to any company, organisation, or agency looking not only for a highly skilled and innovative IT developer, but also for a collaborative colleague who brings positive energy to the team.
Charlotte Perlaky
COO
Mundus International