Portfolio
Middle Full Stack Developer | 3 Years Experience | Main stack: .NET + Angular
Yaroslav Romaniuk
Middle Full-Stack Developer
3 Years Commercial Experience
Primary Stack
Secondary / Modern Stack
- React / React Native
- Angular
- TypeScript
- ASP.NET / .NET
- WPF
- Node.js / NestJS
- NgRx / Redux
- RabbitMQ
- SignalR / SSE
- PostgreSQL
- MongoDB
- Stripe
- Firebase
- Docker
- Tailwind CSS
- OpenSearch
Education
4rd Year Student
State University of Information and Communication Technologies (DUICT)
Software Engineering | Digital Development Technologies
Experience
.NET Full Stack · ASP.NET Core + Angular · 2 years (2024 - Present)
- 2024 - 2025: retail system for a large grocery chain: POS (cash registers) and CRM on .NET + Angular + 1C
- Built a document-flow regression mechanism: 1C changes, after CRM sync, emitted RabbitMQ commands to cash registers that applied storno operations
- 2025 - 2026: ERP/CRM modules on the same stack (ASP.NET Core + Angular)
- A couple of months on a WPF desktop client
Outstaff · JS / TS and .NET + Angular · 2 years (2024 - Present)
- Full-stack across international client products in two stacks: JS / TS and .NET + Angular
- Fintech real-time payments (South Africa, PayShap): React Native mobile app (6 months), Next.js checkout & POS, merchant & admin portals, plus solutions for backend issues in the .NET 9 API
- InsurTech health-benefits platform (US): React 19 + Redux Toolkit multi-portal SPA
- EdTech marketplace (Brazil): Next.js, i18n, Stripe + local payment methods
- Corporate site: Next.js 16 + NestJS + Supabase; AI meeting-transcription browser extension
Freelance & Startups · 1 year (2023 - 2024)
- HR-tech platform with LLM-driven interviews: Angular + .NET, Clean Architecture, Google Gemini scoring, RabbitMQ / Redis / SignalR
- Radiophysics startups on Angular + .NET: radio base-station monitoring dashboard (NgRx, OpenLayers WebGL)
- Landing pages and small business websites
About Me
Middle Full Stack Developer with 3 years of experience: 2 years of ASP.NET Core + Angular on retail POS and ERP/CRM systems, plus commercial React, React Native, Next.js and NestJS work on fintech, InsurTech and EdTech products. Comfortable end-to-end, applying Clean Architecture, CQRS / MediatR and event-driven messaging (RabbitMQ). Focused on shipping maintainable, real-world product features.
Hobbies
Gym & fitness, reading fantasy or sci-fi books, self-development through making personal projects.