Hi, my name is
Ionuț-Iacob Cotoi
I build |
Senior .NET Full-Stack Developer who saves companies $25k/year and makes their software 90% faster.
Currently building the future of inclusive recruitment at DiverseWork.
About Me
I'm a Senior .NET Full-Stack Developer with a passion for building systems that don't just work - they save money and scale beautifully.
My journey started in mechanical engineering at IRUM SA, where I developed rigorous problem-solving skills. I transitioned to software development and found my calling in building high-performance healthcare systems at Bissoft, where I work with a US-based client serving 10,000+ users.
Beyond my day job, I'm the founder of DiverseWork, an inclusive recruitment platform backed by Microsoft for Startups. I believe technology should open doors, not close them.
When I'm not coding, you'll find me exploring Central European Christmas markets or planning my next adventure.
Live Skills Demo
What I bring to your project
Location
Târgu Mureș, Romania
Available Remote 🌍
Status
Open for Contracts
Education
MSc Business Development
Babeș-Bolyai University
BSc Robotics & Mechatronics
Technical University of Cluj-Napoca
Languages
Romanian (Native)
English (C1-C2)
French (Basic)
GitHub Activity
1,035 contributions in 2025
View profile →
Impact That Matters
Real results from real projects. I don't just write code - I solve business problems.
Experience
Building scalable systems from healthcare to startups
Senior .NET Developer
- •Optimized critical stored procedures, reducing execution time by 90% (4s to 300ms) using Task Parallel Library workflows
- •Designed webhook handler for Twilio SMS integration, capturing async delivery failures and saving $25k/year in wasted API spending
- •Built real-time operational dashboards for 10,000+ users with ASP.NET Core Web APIs
- •Implemented CMS 1500 billing form generation and complex invoicing workflows for US healthcare compliance
Founder & Lead Cloud Architect
- •Architected cloud-native inclusive recruitment platform with .NET 8, React 18, and Azure services
- •Integrated Azure OpenAI (GPT-4) with RAG pattern for anonymous candidate-job matching, eliminating unconscious bias
- •Secured €40,000 EU funding (GAL) and 4 pilot companies confirmed for January 2026 launch
- •Built WCAG 2.2 AA compliant accessibility validation engine for government and enterprise contracts
Design Engineer
Led R&D mechanical design projects, managing full lifecycle from CAD prototyping to manufacturing testing. Built foundation in engineering discipline and project management.
Featured Projects
From startups to enterprise — systems built to scale
Healthcare Billing Engine
Optimized legacy invoicing system achieving 90% performance improvement for enterprise healthcare SaaS.
Technical Stack
Technologies I use to build scalable, performant systems
Languages & Runtime
Backend
Frontend
Cloud
DevOps
Architecture
Certifications & Professional Development
Continuous learning & professional growth
Microsoft Certified: Azure Fundamentals
AZ-900GitHub Copilot Foundations
GitHubMicrosoft Certified: Azure Administrator Associate
AZ-104Microsoft Certified: Azure Solutions Architect Expert
AZ-305Let's Work Together
Looking for a .NET developer who delivers measurable results? I'm available for B2B contracts and new opportunities.
Ready to Start?
Let's discuss how I can help optimize your systems, reduce costs, and accelerate your development.
Send MessageTypical response time: 24 hours