Hire the Best Node.js Developers
in Serbia

I’m a backend developer with 5+ years of experience working in a high-paced environment, focusing on building reliable data pipelines and monitoring solutions. I previously worked at a major quant firm, developing and maintaining critical infrastructure for data processing and system observability. I’ve also built a complete data pipeline and software solution for an accounting company, streamlining their workflow and automation. Expertise: ✅ Backend development with Node.js ✅ Designing and optimizing data pipelines ✅ Building scalable APIs and microservices ✅ System monitoring, alerting, and automation ✅ Database architecture (SQL & NoSQL) ✅ Cloud infrastructure & serverless solutions ✅ Frontend development with React & Vue I thrive on solving complex problems with structured, pragmatic solutions. I value clear communication, efficient execution, and delivering quality work within realistic deadlines. Let’s build something great together.

I build full-stack web products on Node.js/TypeScript and React with AI features where they add real value - SaaS dashboards, internal tools, API integrations, and data automation that replaces manual work. 100+ projects delivered since 2019, AI integration since 2023 - up to 40% faster response times, 20+ hours saved monthly for clients. Founder of a development studio in Belgrade with an in-house team. 12 years in IT consulting and business analysis - I think like a product owner, not just a coder. Every project starts with discovery: I find what actually eats your team's time, then build the system that replaces it. On time, on budget, with a 6-month warranty and full code ownership transferred to you. WHAT I BUILD FULL-STACK WEB APPS AND DASHBOARDS React and Next.js on the front; Node.js on the back; TypeScript across the stack. PostgreSQL or MongoDB for data. SaaS platforms, admin panels, internal tools, client portals. Connecting existing interfaces to live APIs, finishing half-built products, and extending inherited codebases - I am comfortable taking over someone else's project. AI INTEGRATION OpenAI and Claude APIs added into real business workflows - structured outputs. AI agents with confidence thresholds, human handoff and anti-hallucination guardrails. RAG systems with custom chunking, embeddings and citation-grounded answers. Live example: a RAG assistant on my cases, background, and how I work - search @NekaSoftBot on Telegram. BACKEND AND APIs Backend with REST APIs, webhooks, background jobs and database design. I build payment integrations (Stripe, PayPal, PayAnyWay) with safe payment handling. My backends can be multi-client setups, using OAuth, third-party integrations and error logging. Usual stack: Node.js/TypeScript, Koa, PostgreSQL or MongoDB, Keycloak for auth AUTOMATION AND DATA PIPELINES Web scraping and ETL with Playwright and Selenium. Scheduled extraction, data validation, structured export to Excel and Google Sheets, automated reporting. Real pipelines with error handling and logging - not one-off scripts. Report automation saved a manufacturer 10+ hours per week; lead intake automation freed 20 hours per month. TELEGRAM BOTS AND MESSAGING AUTOMATION Production bots serving 1,500+ users: helpdesk ticketing with two-way sync, subscription and payment flows, CRM verification, lead capture with analytics. TypeScript, Telegram Bot API, grammY. DEPLOYMENT Deployment on VPS or Railway - with monitoring, logging, and documentation. I can use your VPS or help choose a provider. Stack: Docker, Nginx, CI/CD with GitHub Actions. HOW I WORK - Discovery first: I map the process and understand your business goal before writing code, so the scope is real and the estimate holds. - I lead every project personally - from requirements through architecture, development, QA and release. - Clear communication: progress you can see, questions asked early, no silent weeks. - Clean handover: documented code, deployment instructions, full ownership transferred. As a result: 100% Job Success and clients who come back with new projects - that is how I measure quality. Tech: Node.js, TypeScript, JavaScript, React, Next.js, PostgreSQL, MongoDB, Supabase, Docker, CI/CD, REST APIs, webhooks, OpenAI API, Claude API, RAG, pgvector, Playwright, Selenium, Google Sheets API, Stripe, Telegram Bot API. Tell me what is eating your team's time, or what is half-built and stuck - I will tell you honestly whether I am the right fit and what it takes to finish it.

Senior Node.js & Chrome Extensions Developer | 18+ Years of Experience I specialize in building high-performance web applications, browser extensions, and automation tools. My expertise includes: - Chrome Extensions: Advanced automation, API integrations, UI enhancements - Web Applications: Scalable and efficient solutions using Node.js, React - Scrapers & Parsers: Data extraction, automation, AI-powered captcha solving - Desktop Applications: Cross-platform apps using Electron - ERP & Document Automation: Custom workflow solutions for businesses 💡 Tech stack: Node.js, Chrome Extensions, React, Electron, PostgreSQL, Selenium

⚡ 1k+ hours. 🕰 | Since 2015 | I leveraged my expertise in software development, delivering valuable solutions and contributing to clients' projects with a focus on excellence. I have a diverse background in software development and am adept at managing all stages of the software development life-cycle, from requirements gathering to releasing on all the application stores and app maintenance. I've developed mobile applications using technologies like Flutter, React Native, and Unity, including projects in the fields of healthcare, insurance, and augmented reality. Additionally, I've contributed to web development using React.js, built RESTful APIs, integrated services like Firebase and Slack, and even explored freelance opportunities to gain hands-on experience. My skills cover a broad spectrum of languages, methodologies, and tools, making me a versatile full-stack developer ready to take on new challenges. Client-Side Technologies: React Native, Flutter, React, Unity (AR) Server-Side Technologies: Node.js, Firebase (Authentication, Realtime Database, Firestore, Storage, Cloud Messaging, Cloud Functions) Programming Languages: JavaScript, Dart, C# CI/CD Tools: AppCenter, Code Magic, Bitrise Analytics: App Insights (Microsoft), Firebase Analytics Team Organization Tools: JIRA, Trello, Azure DevOps Wireframing Tools: Balsamiq Integrations: React Native + Unity, Slack Applications Favorite Libraries: axios, Chakra UI, Native-Base, moment, react-hook-form, yup, react-query, zustand, react-native-size-matters, react-native-maps, @react-navigation, eslint Best regards, Boban Minic

🔔🔔🔔 Job success lowered just because I return money from escrow, nothing else. 🔊 Vibe Programming available 💻 Programming Languages 🟣 C# | 🔵 VB.NET | 🔴 Python | 🟡 JavaScript/TypeScript | 🟠 Node.js | 🟢 SQL /TSQL ☁ Cloud Platforms 🔹 Azure: AppService, Functions, ServiceBus, CI/CD (GitHub Actions), CosmosDB, VM 🔹 AWS: Lambda, DynamoDB, EC2 (VM) 🔹 Google Cloud: Firebase 🏗 ORM & Data Access 🟢 Entity Framework | 🔵 Dapper | 🔸 ADO.NET | 🟠 LINQ 🌐 Backend Development ✔ ASP.NET Web Forms/MVC | ✔ Web API | ✔ SignalR ✔ Blazor (Server & WebAssembly) | ✔ MAUI ✔ WCF Data Services | ✔ IdentityServer/Duende | ✔ Keycloak ✔ MediatR (CQRS & Request/Response Patterns) ✔ Node.js (Express, Fastify, NestJS, WebSockets, WebRTC) 🎨 Frontend & UI Technologies 🔹 React | React Native 🔹 AngularJS 1.5+ / Angular 2+ 🔹 jQuery | Bootstrap 3,4,5 | Material Design 🔹 WebRTC (Real-time Audio/Video Communication) 📱 Mobile & Hybrid Development 🔹 Ionic | NativeScript | Xamarin | MAUI | React Native 🖥 Desktop Development 🔹 WPF | WinForms | UWP | MAUI 🗄 Database & Data Storage 🔹 Relational Databases: MS SQL Server (2000 - 2016) | PostgreSQL | SQLite | Oracle (9i, 10i, 11i) | MS Access | MySQL 🔹 NoSQL & Vector Databases: MongoDB | RavenDB | Firebase Firestore Elasticsearch (Full-text search) | Qdrant | Pinecone (Vector Search & AI-based Retrieval) 🏢 Operating Systems 💠 Windows | 💠 Unix/Linux 🚀 Frameworks & Architecture 🔹 .NET Framework 2.0 - 4.8 | .NET Core 3+ 🔹 Blazor (Server & WebAssembly) | MAUI 🔹 Node.js (Express, Fastify, NestJS) 🔹 IdentityServer/Duende, Keycloak 🔹 MediatR (CQRS, Request/Response & Notification Handlers) 🔹 UnitOfWork & Repository Pattern 🔹 Async/Parallel Execution 🤖 AI & Machine Learning 🟠 OpenAI (GPT, Codex, DALL·E, etc.) 🟣 Ollama (Fine-tuning & RAG) 🟢 ML.NET (Machine Learning for .NET) 🔵 ONNX Runtime (Optimized AI Model Inference for .NET) 🔥 Why Work With Me? ✅ Over 15 years of hands-on experience in multi-tier development, relational databases and business applications. ✅ Extensive experience in HR, GIS, Medical, Real Estate, GPS Tracking, Ecommerce and Commercial Software Development. ✅ Strong expertise in web applications, including REST/OData, GraphQL, SOAP/XML services. ✅ Advanced database design skills, including complex SQL queries, stored procedures and performance tuning. ✅ Strong network administration background (MCSA Certified). ✅ Excellent analytical skills, adaptable to evolving technical environments. ✅ Proficient in front-end, back-end, cloud, AI, real-time communication (WebRTC) and DevOps, ensuring end-to-end software development expertise. 📩 Let’s Connect! 🚀 Looking for a reliable full-stack .NET & Node.js developer to elevate your business? Let's talk!