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I'm a Master’s-level Software Engineer with deep expertise in building scalable SaaS applications using Java, Spring Boot, and AWS. My contributions range from enhancing cloud security solutions to optimizing server-side performance in high-load environments. Over the years, I've delivered robust Java backends, designed efficient RESTful APIs, and implemented microservices architectures that power modern, enterprise-grade applications. I'm comfortable deploying services via Docker and Kubernetes, and automating delivery pipelines for smooth CI/CD workflows. 🔧 Core Competencies: Java & Spring Boot: Clean, maintainable backend systems built for scale. AWS Integration: EC2, RDS, Lambda, and more — cloud-native and secure. Microservices & REST APIs: Modular, testable systems with strong separation of concerns. Performance Optimization: Profiling, refactoring, and tuning Java apps for speed. DevOps Tooling: Docker, Kubernetes, Git, CI/CD pipelines. Mentoring: Guiding junior developers and sharing industry best practices. I'm passionate about turning business ideas into high-quality software — quickly, efficiently, and with long-term maintainability in mind. Let’s connect and build something impactful.

🚀 Delivered 16+ projects since 2019, AI integration since 2023. My clients get manual workflows replaced with automation and AI - up to 40% faster response, 20+ hours saved monthly. Glad to build yours next! 🔴 Backend Developer | Node.js | Python | TypeScript 🔴 Founder-led studio based in Belgrade, in-house team 🔴 12 years in IT consulting & business analysis 🔴 Thinking like a product owner, not just a coder 🔴 My clients return with new projects - that's how we measure quality CLICK MESSAGE to get a free mini-audit of your workflow 📩 My goal is simple: find what's eating your team's time and build the backend that replaces it - on time, on budget, with a 6-month warranty. 🎯 Need a Backend Developer who builds with Node.js, Python, and TypeScript? As a Backend Developer, I've built REST APIs, database architectures, automation backends, and data pipelines. Every Backend Developer project starts with discovery - we figure out what you actually need before code. Whether you need a Backend Developer for your API, a Python Developer for data pipelines, or a Node.js Developer for automation - you get a written spec, transparent budget, and weekly updates. WHAT I BUILD ➡️ BACKEND DEVELOPMENT As a Backend Developer, I build systems with Node.js, Python, and TypeScript. REST APIs, database design, authentication, webhooks, background jobs. Every Backend Developer project built for reliability. PostgreSQL, MongoDB, Docker, CI/CD. A Backend Developer who thinks like a product owner, not just a coder. ➡️ PYTHON DEVELOPMENT As a Python Developer, I build data pipelines, web scraping systems, ETL workflows, and automation backends. Selenium, Pandas, Google Sheets API. Every Python Developer project delivers structured output from messy inputs. Scheduled extraction, data processing, report generation. ➡️ NODE.JS DEVELOPMENT As a Node.js Developer, I build REST APIs, webhook handlers, automation backends, and SaaS platforms. Express, Koa, TypeScript. Every Node.js Developer project built with clean architecture and documentation. Payment integrations, multi-tenant systems, real-time processing. ➡️ AI INTEGRATION RAG systems, AI agents, GPT/Claude API - integrated into Node.js and Python backends. As a Backend Developer, I wire AI into your API. AI that answers from your data, never invents. Structured outputs, human-in-the-loop, anti-hallucination guardrails. ➡️ AUTOMATION Business process automation with Node.js and Python. Web scraping, data pipelines, report generation, scheduled tasks. Automation that replaces 10-20 hours of manual work per week. TECHNOLOGIES I USE: ➡️ BACKEND Node.js, Python, TypeScript, PostgreSQL, MongoDB, Docker, REST APIs, Webhooks, Koa, Express. Every Backend Developer tool needed for production systems. ➡️ AUTOMATION & SCRAPING Selenium, Playwright, Google Sheets API, Pandas, Apache POI, cron. Python and Node.js for data extraction and ETL pipelines. ➡️ AI & LLM OpenAI API, Claude API, RAG systems, AI agents, pgvector, prompt engineering. ➡️ DEPLOYMENT Docker, Nginx, CI/CD (GitHub Actions), VPS, Railway. DOMAINS & PRODUCTS I BUILD: SaaS backends, internal tools, admin panels, data pipelines, RAG chatbots, AI agents, workflow automation, web scraping platforms. My projects focus on measurable outcomes: 40% faster response times, 20+ hours saved monthly, 10+ hours saved weekly, zero lost leads. Technologies we bring to projects: Backend Developer, Node.js Developer, Python Developer, TypeScript Developer, API Developer, PostgreSQL Developer, MongoDB Developer, Docker Developer, AI Integration Developer, Automation Developer, Web Scraping Developer, Data Pipeline Developer, ETL Developer, Backend API Developer, Node.js Backend Developer, Python Backend Developer. MESSAGE me "BACKEND" and get a free mini-audit of your workflow 📩

I am a software developer with over 15 years of professional experience. I bring deep expertise in building and delivering complex systems, ranging from back-office applications to real-time processing of high-volume data.

I build backend systems and API integrations that move payroll and accounting data correctly in production. Recent work: full DATEV API integration for a German HR platform (see review below). I own the messy parts. OAuth flows, statutory data mapping, legacy handshakes, and deployment. 1,300+ enterprise hours in production Spring Boot and Kubernetes environments with full CI/CD ownership. Stack: Java · Spring Boot · Go · Kubernetes · React · REST API design Top Rated · 100% Job Success · $30K+ earned 3 Recent Hackathon wins · 1st place If you need an integration built, an API connected, or backend infrastructure that actually holds up, let's talk.

I'm a Java-developer with 7+ experience in building enterprise applications. Working for the customer, I have 100 percent success and solve problems in the shortest possible time. My skill set includes technologies for backend: ⭐Spring ⭐Hibernate ⭐SQL ⭐Kotlin ⭐Apache Tomcat ⭐Jboss ⭐Maven ⭐Gradle Frontend: ⭐Angular ⭐Typescript ⭐Vaadin DevOps: ⭐Jenkins ⭐Teamcity ⭐uDeploy ⭐Kubernetes ⭐Openshift ⭐Linux ⭐Bash ⭐Python ⭐Groovy Also I developed several applications from scratch: ⭐Telegram bot for real estate searching ⭐Telegram game: text RPG-game ⭐Spring-boot application for working with customer ⭐Android puzzle game I am ready to work and develop professionally, contributing to the growth of your organization.

I Design Scalable Backend & AI Systems (Spring Boot, LLM Integration, ERP, Fintech) If you need more than just a developer — if you need someone who understands both your business and how to build the system behind it — we should talk. I design and build backend systems for ERP, production environments, and data-heavy platforms, with a focus on scalability, reliability, and real-world usage. I’m not here to just write code — I help you structure the system, avoid costly mistakes, and deliver something that actually works in production. With 10+ years in software engineering and a background in production systems and business processes, I bring more than coding skills. I’ve worked on systems where downtime costs money, bad architecture breaks operations, and “just ship it” is not an option. That’s why I focus on: System design over quick hacks Scalable backend architecture Clean, maintainable solutions that survive real usage I typically help clients with: ✔ Designing backend architecture for SaaS and ERP systems ✔ Building scalable APIs with Spring Boot (high-load ready) ✔ Multi-tenant systems and data isolation strategies ✔ Integrating AI/LLM into backend workflows (automation, document processing, decision support) ✔ Refactoring broken systems that don’t scale ✔ Connecting complex systems (payments, external APIs, legacy systems) Unlike most developers, I understand the business side behind the system: Production & manufacturing workflows ERP logic and operational constraints Financial and data-driven systems This allows me to translate business requirements into working systems without endless back-and-forth. Tech I use when it makes sense: Java, Spring Boot REST / Microservices architecture SQL (MySQL, PostgreSQL, MSSQL) Kafka / messaging systems Docker / containerized environments AI integration (LLMs, APIs, automation pipelin