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I'm a senior full-stack engineer with 9+ years of experience delivering production-grade applications in Angular and .NET for clients across travel, maritime, and tax industries. My work spans the full lifecycle — architecture, development, DevOps, and long-term maintenance. Recent engagements include an Angular SSR + .NET platform for a travel/OTA business (resolving memory leaks, bot mitigation, and hydration performance issues), an air-gapped network monitoring system built on .NET 10 and deployed via Docker/WSL, and a multi-tenant venue management SaaS with custom booking logic. Technical expertise: ✅ Angular (all versions), TypeScript, RxJS, Signals/NgRx ✅ .NET Framework through .NET 10, C#, ASP.NET, Web API ✅ SQL Server, MongoDB, Entity Framework ✅ Azure, Docker, CI/CD (GitHub Actions, Azure DevOps) ✅ Application security practices (OWASP, dependency scanning) I've led development teams, mentored engineers, and managed client relationships end-to-end as an independent contractor. I focus on clean architecture, maintainable code, and systems that hold up under real production load. Available for both project-based work and ongoing support engagements. Let's discuss your requirements.

Are you building a fintech platform, integrating legacy systems, or scaling a .NET backend that needs to handle real load? I can help. I'm a Senior .NET Backend Developer with 4+ years of experience building scalable distributed systems in fintech and enterprise environments. Currently working remotely for a UK-based fintech startup (InvestmentTribe), architecting .NET 8 microservices that handle real-time financial data pipelines with sub-100ms response times on critical endpoints. Previously built the backend for ExamRoom.AI — an AI-powered proctoring platform used by thousands of exam candidates globally, maintaining 80%+ test coverage on core business modules. What I typically help clients with: Building or refactoring .NET microservices (clean architecture, DDD, CQRS) Event-driven systems with RabbitMQ and MassTransit Real-time features with SignalR and WebSockets REST API & gRPC service development with high-performance async patterns SQL Server optimization, stored procedures, AWS Redshift integration JWT, OAuth 2.0, API Key auth implementations XML/SOAP legacy integrations and data pipelines I write clean, testable code and communicate clearly throughout the project. No disappearing acts. Tech: .NET 6/7/8, ASP.NET Core, EF Core, Dapper, gRPC, Docker, GitLab CI/CD, SQL Server, Redis, AWS Redshift

I help founders build, and scale marketplace products, from initial architecture to production deployment. My core expertise is in marketplace systems: role-based access, payments, onboarding flows, messaging, search & filtering, commission logic, and scalable backend infrastructure. Whether you’re launching an MVP or optimizing an existing platform, I focus on building systems that are technically sound and commercially viable. My expertise lies in working with a range of technologies, including Node.js, Express, Koa.js, React.js, Next.js as well as databases such as MongoDB, Redis, and PostgreSQL. I have a solid understanding of these frameworks and databases, allowing me to develop efficient and robust web applications. Throughout my career, I have successfully delivered projects in various industries, including marketplace platforms and fitness platforms catering to gym trainers and their clients. These experiences have honed my ability to understand client needs and develop tailored solutions that drive results. Furthermore, I hold a strong educational background in computer science, which has provided me with a solid foundation in programming principles and problem-solving techniques. I continuously strive to stay up-to-date with the latest trends and best practices in the field to ensure that my work remains cutting-edge and of the highest quality. When you work with me, you can expect professionalism, clear communication, and a commitment to delivering exceptional results. I pride myself on my attention to detail and my ability to work efficiently under tight deadlines. Thank you for taking the time to review my profile. I look forward to the opportunity to collaborate with you on your next project. Feel free to reach out to discuss your specific requirements in more detail.

Hello and welcome to my profile! My name is Milos Pantelinac, and I am a professional Full-Stack Web Developer from Serbia with a strong background in both front-end and back-end development. Web development is not just my profession—it’s my passion since my teenage years. I believe that people should pursue what they are best at and what excites them, and for me, that’s building efficient, scalable, and user-friendly digital solutions. With years of hands-on experience, I have successfully delivered high-quality projects to clients across different industries. I have finished my graduation from The University of Computer Science Engineering and I have taken many lessons on modern web designing from famous institutions. My educational background allowed me to thrive in this career and my training on this has made me a master of this section. I hold a degree in Computer Science Engineering and have completed numerous courses in modern web development and design. This combination of education and practical experience allows me to approach projects with both technical expertise and creative problem-solving. I can give you a money-back guarantee and I can assure you won’t regret hiring me. Thank you. 🔹 My Core Skills Front-end Development: 1. HTML 2. CSS/SCSS 3. JavaScript 4. jQuery 5. Vue.js/Nuxt.js 6. TypeScript Back-end Development: 1. .NET Core/C# 2. Entity Framwork 3. Linq 4. MSSQL 5. IIS 6. Azure 7. GraphQL CMS Experience: 1. WordPress (custom themes, plugins, optimization) 2. Tridion CMS (enterprise-level content management) 🔹 What I Offer 1. Clean, maintainable, and well-documented code 2. Scalable and secure web applications 3. Optimized performance and SEO-friendly solutions 4. Strong focus on usability and accessibility 5. Commitment to deadlines and clear communication I take pride in being honest, detail-oriented, and dedicated to my work. Client satisfaction is always my top priority. I stand behind my work and guarantee results you can rely on. If you’re looking for a reliable developer to bring your ideas to life, I’d be glad to collaborate. Let’s create something outstanding together!

Owner @ CodeAnarchy | Toptal | Arc | Top 1% - Upwork Ex - Lead Software Engineer L2 @ FINcredible GmbH Master's in Computer Software Engineering PhD candidate in Computer Software Engineering (ongoing) Senior Software Engineer with over 8+ years of experience, I specialize in architecting high-performance, scalable systems for the fintech, AI sectors and others. I lead projects from concept to launch, building robust, cloud-native, microservice or monolith based applications with TypeScript, Node.js, and React ecosystem. If you are looking for a developer who just checks boxes, I’m not your guy. I build systems that actually solve the chaos of complex operations. Whether you are scaling a Fintech platform to millions of users or building AI-driven ETL pipelines, I don't just write code—I architect and deliver complete, scalable systems. I have a proven track record of delivering critical business value: - Cut data ingestion time by 85-90% for large-scale enterprise batch operations. - Architected systems to handle millions of monthly users with high availability. - Led development of a core fintech platform integrating with 100+ major EU banks via PSD2 and XS2A standards. Transforming complex requirements into intuitive, high performance web applications. AWS Certified Developer - Associate My underlying expertise: Architecture: System Design, System Architecture, Microservices, Event-Driven Systems, Fintech Systems, PSD2/XS2A, Domain Driven Design, Domain Modeling, 3DS Backend: Node.js (NestJS, Express, Fastify), TypeScript, PostgreSQL, MySQL, DynamoDB, Payments, Supabase, Prisma, Twilio, Resend, Redis Frontend: React (Next.js, Remix), TypeScript, JavaScript, PWA Cloud & DevOps: AWS (Certified Developer), GCP, Terraform, Kubernetes, Docker, GitHub Actions, GitLab CICD, Vercel, Cloudflare AI: AI-Driven Workflows, Vercel AI, Google Generative AI & Vertex, Hugging Face Models, Modal, Trigger.dev, Inngest, N8N, Deepgram, LangGraph TypeScript and JavaScript wizard / addict. 👋 Let's discuss how I can architect and build your next-gen platform. Send me a message to schedule an initial consultation. I'm always available for a coffee chat, whatever the reason. 🤝 Please feel free to send a message so we can have a chat over a cup of coffee!

I help startups and growing businesses build scalable SaaS platforms, APIs, and modern web applications using Ruby on Rails, React, and PostgreSQL. With 13+ years of software engineering experience and 11+ years focused on Ruby on Rails, I’ve worked on production-grade applications ranging from MVPs and SaaS products to high-performance backend systems and complex integrations. What I can help you build: ✔ AI integrations (including RAG and agent development) & API-based systems ✔ Ruby on Rails SaaS applications ✔ MVP development for startups ✔ REST APIs & third-party integrations ✔ React / TypeScript frontends ✔ Scalable backend architecture ✔ PostgreSQL performance optimization ✔ Payment integrations (Stripe, subscriptions, billing) ✔ Docker & AWS deployments ✔ Internal tools & business automation Tech Stack: Ruby on Rails, React, TypeScript, JavaScript, Golang, PostgreSQL, Redis, Docker, AWS, Node.js, Python, Django, FastAPI, Linux, REST APIs, Why clients work with me: * Product-first attitude * Clean, maintainable, production-ready code * Strong communication and reliable delivery * Fast understanding of business requirements * Independent execution with minimal supervision * Long-term collaboration mindset I’m best suited for: * SaaS startups * Long-term product development * Backend-heavy applications * Scaling existing Rails applications * Businesses needing a senior engineer who can own features end-to-end If you need someone who can quickly understand your product and deliver reliable solutions without excessive hand-holding, let’s talk.