SaaS Developer for European Startups

About

Building a SaaS product for the European market? I am Kirill Strelnikov, a freelance SaaS developer based in Barcelona with 5+ SaaS platforms delivered. I specialize in multi-tenant architecture with Django, Stripe subscription billing, role-based access control, and production deployment. From micro-SaaS for solo founders to complex B2B platforms for funded startups. GDPR compliance is built into every project from day one — not bolted on as an afterthought.

What I Build

• Multi-tenant SaaS architecture (shared DB or schema-per-tenant)
• Stripe subscription billing with free trials and upgrades
• Role-based access control and team management
• Admin dashboards with analytics and metrics
• REST APIs for mobile and third-party integrations
• Background processing with Celery and Redis
• GDPR compliance (data export, deletion, consent management)

My tech stack: Python, Django, Django REST Framework, PostgreSQL, Redis, Celery, Docker, OpenAI API, LangChain, Telegram Bot API, Stripe, FastAPI, Nginx, Git, Linux.

How I Work

1. Free consultation — we discuss your project, requirements, and timeline. I provide a fixed-price estimate within 24 hours.

2. Development — iterative sprints with demos every 1-2 weeks. You see working software early and provide feedback.

3. Launch — deployment, monitoring, documentation. I handle the entire DevOps stack.

4. Support — ongoing maintenance, bug fixes, feature additions. Many clients continue on a retainer.

Learn more: SaaS MVP Development

Why Work With Me

• Fixed pricing — you know the cost upfront. No hourly surprises.
• Production-tested stack — Django, PostgreSQL, Docker. Proven across 15+ projects.
• Fast communication — Telegram, WhatsApp, email. Average reply under 2 hours.
• Registered in Spain — official autónomo in Barcelona. European invoicing, GDPR-compliant.
• Full ownership — you own 100% of the code. No vendor lock-in.