Projects That Prove the Point

A mid-size European retailer was running on a 10-year-old monolithic .NET platform. High maintenance costs, frequent outages, and an inability to add new features without 6-week release cycles were strangling growth.

3Bird People deployed a team of 4 developers (2 backend .NET, 2 React frontend) supervised by a European CTO and PM. Working in 2-week sprints, they migrated the platform to a microservices architecture with a modern React frontend over 6 months.

A startup had 6 weeks until their first investor demo, limited budget, and zero existing code. They needed a functional, polished MVP to prove their concept and close a seed round.

AI-Sitters used Cursor AI and Claude to generate the full application structure, components, and API integrations in parallel. Human engineers reviewed every module, refined UI, wrote tests, and handled security in daily QA cycles. The MVP launched in 10 business days.

A HealthTech company had a critical patient management system written in legacy Java. Refactoring to modern Spring Boot + React was estimated at 12 months with their in-house team. They needed to accelerate without sacrificing GDPR compliance.

3Bird used a hybrid approach: AI-Sitters handled 60% of mechanical refactoring (class migrations, API transformations, boilerplate generation) while 3Bird People senior developers owned business logic migration, GDPR compliance checks, and quality gates.

A FinTech scale-up needed a payment orchestration platform supporting 8 providers across Europe. Their in-house team of 3 developers couldn't handle the scope alongside ongoing product work.

3Bird deployed a dedicated team: 2 senior backend (.NET + Node.js), 1 frontend (React), and a European fractional CTO for architectural decisions. The team integrated seamlessly with the existing in-house team via Agile sprints.

An online retailer wanted to test whether a recommendation engine would improve basket size. Building it traditionally to test the hypothesis would cost €40k and take 2 months. They needed a proof-of-concept first.

AI-Sitters generated a working recommendation engine prototype using collaborative filtering + LLM-assisted product matching in 5 days. After human review and QA, it was deployed to 10% of traffic for A/B testing.

A B2B logistics startup needed to go from concept to paying customers in 8 months or lose their pre-seed runway. Traditional development would take 12+ months for the full feature set.

Months 1–2: AI-Sitters built core MVP (shipment tracking dashboard + API). Months 3–4: Customer validation and iteration. Months 5–8: 3Bird People team (3 devs) scaled the platform, added integrations, and prepared for enterprise sales.