I'm a Full Stack Engineer & Software Architect with deep expertise in Angular and .NET (C# / ASP.NET Core) — building scalable, production-grade systems for enterprise clients across Fintech, Healthcare, AI, ESG, and Blockchain sectors.

As a Top Rated Plus Freelancer on Upwork (Top 3% globally) with 5⭐ reviews across all contracts, I pride myself on delivering software that’s not only technically excellent but also drives real business value.

I specialize in designing clean, modular architectures that follow SOLID principles, design patterns, and reactive programming (RxJS) — delivering code that’s not only powerful, but maintainable and future-proof.

Note: 🚫 My repositories aren’t public — all production code is under company GitHub accounts and strict NDAs.
💼 Every line of code I write is for production apps that make money — not for display! ⚡
📘 However, I’ve prepared detailed .md repositories that explain the architecture, technologies, and business logic behind my major apps.

• 🏗 Architectural Thinking: I design scalable, modular frontends & APIs that are clean and enterprise-ready.
• ⚙️ Full Stack Mastery: Angular, RxJS, NgRx, ASP.NET Core, Firebase, GCP.
• 🧩 Design Patterns & SOLID: I believe in clarity, reusability, and structure over chaos.
• 🌍 Cross-Domain Experience: Delivered production apps in AI, Blockchain, Healthcare, Fintech, ESG, and Sustainability sectors.
• 🧠 Problem Solver: I love optimizing code, simplifying complexity, and bringing systems to life that scale beautifully.
• 💬 Strong Communicator: Team lead, mentor, and collaborator — ensuring clarity, efficiency, and momentum in teams.

Angular | RxJS | NgRx | Nx Monorepo | TypeScript | JavaScript | HTML5 | SCSS | Bootstrap | Tailwind | PrimeNG | Angular Material | Fabric.js | D3.js | Ngx-Charts

ASP.NET Core (C#) | Entity Framework Core | LINQ | Web API | REST & GraphQL | Socket.io | OpenAI API | Firebase Functions

PostgreSQL | MySQL | MS SQL Server | MongoDB | Firestore | Redis

Google Cloud (GCP) | Firebase | AWS | Azure | Docker | CI/CD (GitHub Actions / Bitbucket Pipelines) | Nginx | Linux | Cloud Run | App Engine | Kubernetes

Visual Studio Code | JetBrains Rider | Postman | Git | GitHub | Bitbucket | GitLab | Jira | Figma | Adobe XD | Linear | Slack | Notion

🌐 Web Applications
🏦 Fintech & Banking Systems
🧬 Healthcare & Pathology Platforms
🤖 AI / Machine Learning Tools
💚 ESG / Sustainability Software
🔗 Blockchain Integrations
📊 Business Intelligence & Data Visualization

• Clean Architecture and modular design systems.
• SOLID principles and object-oriented best practices.
• State management with NgRx / Signals for predictable behavior.
• Reactive programming (RxJS) for efficiency and reactivity.
• Performance optimization (lazy loading, memoization, OnPush, and caching).
• Scalable REST / GraphQL API design with clean DTO and domain layers.

💼 UpWork: upwork.com/freelancers/ismarbega
🔗 LinkedIn: linkedin.com/in/ismar-begic-bega
📧 Email: ismarbegicit@gmail.com

“Clean code isn’t written—it’s designed.”