Hire the Best OAuth Developers in Novi Sad, RS

I’m a backend developer focused on creating secure, high-performance, and scalable applications. I build robust systems using Spring Boot, PostgreSQL, and RESTful APIs, delivering clean and maintainable code for long-term growth. I’m experienced in API design and integration, database modeling, authentication and authorization (Keycloak, OAuth2, JWT), and working with Dockerized environments. My goal is always to develop efficient, reliable, and well-structured backends that make frontend integration seamless. 🔧 Core Skills Backend development with Spring Boot API design and system integration PostgreSQL / MySQL database design and performance tuning Authentication & Authorization (Keycloak, OAuth2, OpenID, JWT) Docker, CI/CD collaboration, and environment setup Clean architecture, modular design, and scalable solutions 🚀 Why Clients Work With Me Clear, professional communication Clean, maintainable, and well-documented code On-time delivery and attention to detail Problem-solving mindset and technical precision Whether you need a full backend built from scratch or help improving an existing system, I’ll ensure your project runs smoothly from start to finish.

I build AI-powered web applications for clients who need the full stack - from async Python backends to slick React frontends. I have a feel for UX/UI, design, and how to improve products and make them more intuitive, as well as can manage complex processes and pipelines. I am currenlty working on an automated pricing and data-enrichment pipeline for a large-catalog e-commerce retailer (OpenAI Batch API, multi-API integrations, relational schema design, safety guardrails on live pricing logic, full test coverage). Other recent work includes an AI job-matching platform (OpenAI, Django, React, Docker) and a funded research tool integrating PubMed, Semantic Scholar and OpenAlex with LLM-assisted review (FastAPI, MongoDB, Google Document AI). I've also led full React migrations, built MVPs from Figma to production, and integrated OAuth2/OIDC auth flows. I like working on solutions together, bouncing off ideas, proposing solutions, and I will flag problems early and communicate clearly. Stack: Python (Django, FastAPI) · React/TypeScript · TanStack Query · Tailwind · shadcn/ui · PostgreSQL · MongoDB · Docker · OpenAI API · GitLab CI/CD

I’m a senior .NET backend engineer focused on building APIs, integrations, and automation-heavy systems. Over 10+ years on Upwork, I’ve delivered large-scale backend solutions with 5.0 feedback across 18K+ hours. What I build: Clean, versioned REST APIs Integrations (CRM, billing, IoT, webhooks, payment providers) High-load backend services Background workers, schedulers, messaging Secure authentication (OAuth2, JWT, RBAC) Tech: .NET 6–8, C#, EF Core, SQL Server, Azure, Docker, Redis, RabbitMQ What you get: stable, production-ready backend clear documentation fast communication reliable delivery without micromanagement If your project needs a senior engineer who can take ownership and deliver from day one — let’s talk.

👋 Hello! 👨‍💻 I'm a seasoned professional specializing in both web and desktop application development with a solid track record spanning over 20 years. I have perfected a broad range of skills that can deliver exceptional value to your projects: Bitrix24 CRM, Bitrix CMS, WordPress, Laravel, PHP, HTML, CSS, JavaScript, Git. What I offer ✨: 📊 Integrate with Bitrix24 via API, webhooks, creating Bitrix24 application for Bitrix24.Market 🌐 Custom website development from the ground up 🛠️ Ongoing website support and maintenance 🔌 Seamless integration of various services into your platform Technical Expertise 💼: 🔨 Bitrix24/1C-Bitrix CMS: Knowledge of this platform for solid business tool integration. 📝 WordPress: For efficient and scalable content management systems. 🛠 Laravel: Expertise in this robust PHP framework ensures modern, maintainable code. ⚙️ PHP: Versatile server-side scripting for dynamic and interactive sites. 🎨 HTML/CSS: Creating responsive and visually compelling user interfaces. 💻 JavaScript: For interactive and feature-rich web applications. 🌀 Git: Effective version control for collaborative and iterative development. 💡 I am committed to providing solutions that not only meet your immediate needs but also support the long-term success of your business. I am here for a dedicated partnership that stands the test of time. More technical skills ⚡: - CMS/CRM: Bitrix24, 1C-Bitrix, WordPress - Systems&Languages: PHP, HTML, HTML5, JavaScript, CSS, SQL, - MySQL, C/С++, Unix, Git, Jenkins, Composer, Node.js, WebPack, Vue.js - Frameworks: Laravel, Yii2 - Development Software: MS Visual Studio, - Visual Studio Code, PHPStorm. - Source Version Control: Git, Mercurial, SVN. - Web Servers: Linux, Apache, Nginx, Mysql - Technologies: TCP/IP, COM/DCOM, Open GL, DirectX/Direct3D. - Platforms: Windows, Unix/Linux

Hi, I don’t panic when production breaks. I make coffee, read the logs, and calmly ask the server what it’s feeling today. 👉 😄 Most of the time, it just wanted better architecture. I’m a full-stack developer who builds systems that survive real users, real traffic, and real-world requirements — not just demo day. My work focuses on clean backend design, automation, and scalable web applications that don’t slowly turn into mysterious legacy systems after three months. On the frontend, I work with React and Next.js. On the backend, I use Node.js, Laravel (PHP), and Python, usually paired with PostgreSQL and a strong belief that databases deserve respect. I specialize in turning complex business rules, spreadsheets, and “this worked in Excel” logic into reliable, automated systems. I also build web crawlers and automation tools using Puppeteer with incognito/headless browsing. This allows me to extract data from modern, JavaScript-heavy websites while avoiding fragile scrapers that break the moment someone changes a button color. Think stealthy, durable, and low-maintenance — like a well-trained ninja, but for browsers. Key Areas of Expertise ☑ Full-stack web development (React, Next.js, Node.js) ☑ Backend development with Laravel (PHP) and Python ☑ API design and integrations (REST, GraphQL) ☑ Secure authentication and authorization (OAuth, JWT, role-based access) ☑ Web crawling using Puppeteer with incognito/headless browsing ☑ Automation, schedulers, and background jobs that actually wake up on time ☑ Database design and optimization (PostgreSQL, indexes are not optional) ☑ Cloud infrastructure and deployments (AWS, optimized for sanity and cost) How I Work (After Years of Learning the Hard Way) ☑ I write code that future developers won’t angrily rewrite at midnight ☑ I automate repetitive work so humans can focus on thinking ☑ I design systems that are extendable, not “please don’t touch” fragile ☑ I explain technical decisions without turning meetings into lectures ☑ I document things because “I’ll remember later” is a lie I take my work seriously, but not myself. Software behaves better when it’s built with clarity, patience, and just enough humor to stay sane. If you need someone who can build solid backends, automate workflows, scrape data reliably, and keep things running long after launch — I’m your developer. Let’s build something reliable, scalable, and boring in the best possible way. Thanks