# Cases [Home](https://3bird.nl/)/Client Cases # Projects That Prove the Point Real challenges, real solutions, real results. Explore how 3Bird delivered across both propositions and multiple industries. All Cases 3Bird People AI Lab Hybrid E-Commerce HealthTech FinTech Startup 3Bird People E-Commerce ### E-Commerce Platform Overhaul for a European Retailer Rebuilding a legacy .NET platform with a modern React frontend and microservices backend. The Challenge 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. The Solution 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. Results 70% Cost vs local team 6× Release frequency 99.9% Uptime post-launch 3Bird AI Lab Startup ### Investor-Ready Startup MVP in 10 Days AI-Sitters built a full-stack SaaS MVP from scratch in 10 business days for a seed-stage startup. The Challenge 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. The Solution 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. Results 10 Days to working MVP €120k Seed funding secured 65% Below estimated dev cost Hybrid HealthTech ### Legacy System Modernization for HealthTech Company AI-assisted refactoring combined with dedicated 3Bird People developers for a 40% time saving. The Challenge 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. The Solution 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. Results 40% Development time saved 3× Deployment frequency €180k Cost savings vs estimate 3Bird People FinTech ### Payment Integration Platform for FinTech Scale-up Dedicated full-stack team built a multi-provider payment orchestration layer in 4 months. The Challenge 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. The Solution 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. Results 4mo Full platform delivered 8 Payment providers integrated 60% Cost vs local alternatives 3Bird AI Lab E-Commerce ### AI-Powered Recommendation Engine Prototype AI-Sitters prototyped a personalized product recommendation engine in 5 days for A/B testing. The Challenge 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. The Solution 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. Results 5 Days to prototype +18% Average order value €8k Total prototype cost Hybrid Startup ### B2B SaaS: From Concept to Scale in 8 Months AI Lab built the MVP, 3Bird People scaled it: a textbook hybrid success story. The Challenge 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. The Solution 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. Results 8mo Concept to first revenue 12 Paying enterprise clients 50% Under original budget ## Your Project Could Be Next Let's discuss your challenge and design the right 3Bird approach: People, AI Lab, or hybrid. [Schedule a Free Call](https://3bird.nl/contact/) [Explore Our Services](https://3bird.nl/services/) --- Book a free 30-minute consultation: https://calendly.com/3-bird/3bird-oscar-30-minuten-meet Email: contact@3bird.nl | Phone: +31757993038