Hire a SaaS Developer in Barcelona

About

Building a SaaS product in Barcelona? I am Kirill Strelnikov, a freelance SaaS developer based here. I specialize in building multi-tenant platforms with Django, PostgreSQL, and Stripe — from MVP to enterprise scale. I have delivered SaaS products for time-tracking, e-commerce, real estate, and AI platforms. My development process is structured: discovery, architecture, iterative development, launch, and ongoing support.

What I Build

• Multi-tenant SaaS architecture
• Subscription billing with Stripe
• Role-based access control
• Admin dashboards and analytics
• REST APIs for web and mobile
• Background processing (Celery, Redis)
• Docker deployment and monitoring

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 Development Services

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.