Hire the Best .NET Core Developers in Sofia, BG

Lead Full‑Stack Web Developer with about 7 years of hands‑on experience delivering high‑quality software solutions. My journey spans freelance excellence, team leadership, and independent development — combining technical depth with responsibility, ownership, and strong collaboration. • Freelance Success (2.5 years, Ever Technologies): Delivered end‑to‑end web solutions for global clients, earning Top Rated Plus status with 3980+ hours and a 99% job success rate. • Team Leadership (3.5 years, Komax, Switzerland): Led a multinational development team, driving architectural improvements, optimizing infrastructure, and implementing CI/CD pipelines. • Independent Developer: Built a fully containerized, automated .NET‑based web crawler with AI integration. I lead by example — committed, persistent, and fully collaborative in driving the team toward shared goals. I’m currently exploring new opportunities where I can apply my technical leadership and full‑stack expertise to deliver meaningful impact.

⭐ 7+ Years of Experience 🏅 Telerik Academy Certified Developer 🥇 Softuni Certified Developer I’m a full-stack developer specializing in .NET backend development and React/Next.js frontends. I build scalable, high-performance web apps and APIs that power modern, interactive user experiences. My backend expertise includes Supabase, PostgreSQL, SQL Server, and Entity Framework, giving me a strong foundation for building secure, efficient data systems. From SaaS platforms to enterprise tools, I’ve helped startups and businesses turn complex ideas into fast, responsive, production-ready applications — with clean code, smart architecture, and seamless user flows. Let’s build something exceptional.

Full-Stack Developer | ASP.NET Core • Angular • SQL • Azure 🚀 Build a secure, scalable B2B SaaS — where every client gets their own secure workspace and dashboards they actually understand. I help founders and businesses turn ideas (or messy internal tools) into reliable company-based web platforms with clean UX, strong security, and fast reporting. Why Work with Me No need to juggle multiple freelancers. I handle the full delivery — planning → architecture → development → testing → launch — so you get a clear scope, predictable timeline, and a system that’s easy to maintain. What I deliver ✅ Scalable B2B SaaS architecture (separate company workspaces, data isolation, roles/permissions, organization setup ✅ Secure auth & access control (JWT/OAuth, RBAC, policies, audit logs) ✅ High-performance .NET backend (ASP.NET Core, REST APIs, background jobs) ✅ Modern Angular frontend (clean UI, responsive, state management, reusable components) ✅ Dashboards & reporting (KPIs, filters, exports, drill-downs, performance tuning) ✅ Database design & optimization (SQL Server, indexing, query tuning, migrations) ✅ Мonitoring & error tracking Typical projects I build: -Scalable B2B SaaS platforms (subscriptions, organizations, permissions) -Admin panels & internal business systems -Analytics dashboards (usage, revenue, operations) -Workflow apps (approvals, queues, automation, notifications) My working process (A → Z) 1 — Onboarding Questionnaire You fill out a short form so I understand your business goals, users, and requirements. 2 — Wireframe + Plan I map the core screens, user flows, and solution structure before we write code. 3 — Development I build the backend + frontend in clear milestones (so you see progress early). 4 — Testing & Refinement I test real-world scenarios, fix edge cases, and optimize performance/security. 5 — Handover & Guidance You get a clean delivery + a short video walkthrough so you’re not dependent on me. FREE personalized video audit 📩 Send your idea, Figma, requirements, or existing system — and I’ll record a FREE video audit with: -the best architecture approach (especially for multi-tenant SaaS) -what to build first for fastest ROI -risks to avoid (security, scaling, reporting performance) -a clear next-step plan ✨ Stop guessing — start building a SaaS that’s secure, fast, and easy to grow. Message me and let’s map your platform.

👋 Hi there! I’m a C# web developer with hands-on experience building fast, secure, and scalable applications using ASP.NET Core. I’ve developed and deployed a full-featured web project from scratch - giving me deep insight into the entire development lifecycle: from architecture and backend logic to responsive front-end interfaces. 🚀 Whether you need to develop a new web application, optimise an existing codebase, or fix bugs, I focus on clean code, solid architecture, and scalable solutions. 🔒 I'm serious about security, performance, and clear communication — and I treat your business goals like my own. 💬 Let’s talk about how I can help bring your idea to life or improve your current project.

Full-Stack Web Developer Hi, I'm Elvis. I'm a Full-Stack Web Developer with 9 years of experience building all kinds of Web, Mobile, and Desktop applications. I've worked with clients from many different industries, helping them turn their ideas into real, functional products. Most of my work is around modern web technologies — HTML, CSS/SCSS, JavaScript/TypeScript, Python, and .NET C#. I enjoy building clean, user-friendly frontends and solid, reliable backends. Along the way, I've integrated lots of third-party services like PayPal, Stripe, WhatsApp, Telegram, Google APIs, and more. I'm comfortable working with databases such as SQL, MySQL, PostgreSQL, and MongoDB. I've also deployed projects to AWS, GCP, Vercel, Hostinger, and other hosting platforms. Beyond traditional development, I work on AI code evaluation — creating rigorous coding tasks, writing test suites, reviewing AI-generated code for correctness, and performing detailed QA analysis. This involves deep code review across multiple languages, writing technical specifications, and verifying everything through Docker testing pipelines. If you already have UI/UX designs, I can bring them to life using React/Redux, Angular, Material-UI, Nebular, Bootstrap, and similar tools. Other tools and skills I use regularly: Git (advanced workflows — patches, diffs, rebasing, multi-repo work) Docker for testing and deployment Technical writing — specs, QA reports, task descriptions A few things about how I work: I follow modern standards and good development practices I like writing clean, organized, readable code I'm persistent and always learning I'm honest about my hours and prefer long-term collaborations Feel free to check out my portfolio and reviews. If you think I might be a good fit for your project, I'd be happy to talk.

I'm a senior developer with experience in building different online platforms and applications with cloud integrated services. My focus is full-stack development including cloud infrastructure with AWS. Some aspects of project development I focus on are positive interactions, regular and transparent communication and implementation of technical best practices when possible in order to improve long-term project development and maintenance costs.