Java Developers for hire in Serbia
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Hire denisSolution
Thank you for visiting my profile. I’m a Senior Full-Stack Developer with 7+ years of experience building web applications, mobile apps, eCommerce solutions, business systems, APIs, and automation tools. I work with startups, businesses, and individuals to turn ideas and requirements into reliable, production-ready...Thank you for visiting my profile. I’m a Senior Full-Stack Developer with 7+ years of experience building web applications, mobile apps, eCommerce solutions, business systems, APIs, and automation tools. I work with startups, businesses, and individuals to turn ideas and requirements into reliable, production-ready solutions. = What I Can Help You With = ■ Web Development Custom websites, SaaS platforms, dashboards, portals, marketplaces, and business applications. React · Next.js · Vue.js · Laravel · Node.js · Python · PHP · ASP.NET ■ Mobile Development Android and iOS applications using React Native, Flutter, and native technologies. ■ eCommerce & CMS Shopify · WordPress · WooCommerce · Webflow · Wix From new builds and custom features to integrations, performance improvements, and bug fixes. ■ Backend, APIs & Databases API development, authentication, payment systems, database design, third-party integrations, and backend services. PostgreSQL · MySQL · MongoDB · Supabase · Firebase ■ AI & Automation AI integrations, chatbots, workflow automation, API integrations, n8n, Zapier, web scraping, and custom automation solutions. ■ Deployment & DevOps AWS · Docker · Linux · CI/CD · Cloud Deployment = Why Work With Me? = ◆ 7+ years of professional development experience ◆ Clean and maintainable code ◆ Clear and responsive communication ◆ Reliable delivery and regular progress updates ◆ Strong attention to UI/UX and details ◆ Honest estimates and practical technical recommendations ◆ Available for both short-term and long-term projects You don’t need to have every technical detail figured out before contacting me. Tell me what you want to build or what problem you need to solve. I can help define the requirements, choose the right approach, and take the project from idea to deployment. Whether it’s a small bug fix, an existing project that needs improvement, or a complete application built from scratch, feel free to send me a message. less -
Hire sasaprogramer21
Seasoned software developer with over 7 years of experience in web, mobile, desktop, and AI/ML development. Proven track record of successfully delivering complex, large-scale projects for top-tier IT companies in Europe. Highly skilled in tackling challenging technical problems and collaborating effectively with...Seasoned software developer with over 7 years of experience in web, mobile, desktop, and AI/ML development. Proven track record of successfully delivering complex, large-scale projects for top-tier IT companies in Europe. Highly skilled in tackling challenging technical problems and collaborating effectively with cross-functional teams. Committed to providing professional, high-quality solutions and maintaining strong communication with clients. Web Development: React, Angular, Vue.js, Node.js, Express, PHP, Laravel Mobile Development: Android (Java, Kotlin), iOS (Swift, Objective-C) Desktop Applications: C#, .NET, Electron, Qt AI/ML: Python, TensorFlow, PyTorch, scikit-learn, Natural Language Processing Databases: MySQL, PostgreSQL, MongoDB, Redis DevOps: Docker, Kubernetes, AWS, Azure, GCP Project Management: Agile methodologies, Scrum, Kanban less -
Hire miodragstajic
We are Falcon Interactive, a game and app development studio with 3 decades of experience building high-end games, mobile apps, and software across mobile, PC, and Xbox and other platforms. In that time we have developed more than 300 apps, games, and other software across many genres, industries, and...We are Falcon Interactive, a game and app development studio with 3 decades of experience building high-end games, mobile apps, and software across mobile, PC, and Xbox and other platforms. In that time we have developed more than 300 apps, games, and other software across many genres, industries, and technologies. We are also experienced app developers, having built hundreds of mobile apps for businesses of all kinds. These range from simple, focused apps to sophisticated solutions with large backends and REST APIs, for both personal and B2B use, on iOS and Android. Our games are on the shelves alongside hundreds made for clients. We have shipped titles to Steam, including 'Ava Hunt and Thieves of the Lost', built on Unreal Engine 5, and award-acclaimed 'Arizona Derby', and its sequel, a racing game released on Steam. On mobile, games like Rails of the Glory and Air-X-Fighter reached players on iOS and Android, with Rails of the Glory hitting the App Store top ten on launch day. Our game portfolio spans all possible game genres, from racing, shooters, arcade, action, puzzle, learning, casino, MMORTS MMORPG titles and plenty others. What we build: Mobile apps for iOS and Android, from focused single-purpose apps to complex, backend-driven platforms Business and B2B apps with large backends, REST APIs, and database solutions Games in Unreal Engine and Unity, for mobile, PC, and Xbox High-end 3D mobile games with complex gameplay, multiplayer, leaderboards, achievements, in-app purchases, and real-time chat AAA PC and console games with advanced graphics, physics, and character work Casino and slot games, simulation and educational games, and quiz and board-game apps Web platforms and business software Our team of senior engineers, animators, and character designers covers every discipline of app, game, and software development, so a project can go from concept to launch in one place. We work in an agile way, iterating on each version with your feedback and proposing improvements as we go, and we back every product with reliable maintenance and support after launch. Please check our reviews and portfolio to compare our work, and message us to discuss your project. less -
Hire MancicSoftDev
Front-end & back-end web development, Web performance optimization, Agile software development, Test driven development, Database design and management. Experience working as an individual developer and a project manager in many projects providing me with the skills of communicating with clients to satisfy their...Front-end & back-end web development, Web performance optimization, Agile software development, Test driven development, Database design and management. Experience working as an individual developer and a project manager in many projects providing me with the skills of communicating with clients to satisfy their needs. Love and passion for work, sincerity, and innovation, and steady effort are the source of keeping me move toward a bright future. I'm very passionate about delivering the best technical solutions. Please contact me anytime if you are interested in me. -Jest, NestJS -React, Angular, Vue.js -Laravel, Redis -Python, Django -Node.js, Express.js -AWS/GCP, Docker, Kubernetes -MySQL, MongoDB -AI development, AI bot My focus is quality-first. less -
Hire lazarr4
Thank you for taking the time to view my profile. I enjoy seeing the things I build actually help people, and that is one of the main reasons I’ve continued working in this field. For over 7 years, I’ve been involved in developing e-commerce websites using Shopify and WordPress, as well as SaaS products and various...Thank you for taking the time to view my profile. I enjoy seeing the things I build actually help people, and that is one of the main reasons I’ve continued working in this field. For over 7 years, I’ve been involved in developing e-commerce websites using Shopify and WordPress, as well as SaaS products and various web-based systems. What I Can Help With ✅ Web Design - Responsive Web design - Modern and Clean design - Powerful UI/UX ✅ Shopify App Development - Shopify Theme Development - Custom Shopify Apps (Node.js, React, Laravel) - Shopify API (REST & GraphQL) ✅ WordPress Development - WooCommerce E-Store Development - Customize WordPress Theme - WordPress Theme and Plugin Development ✅ Python & Node.js Development - Scalable Marketplace Development with Django and React. - Flexible E-Commerce Platform with Node and Next. ✅ SEO & Digital Growth Optimization - Comprehensive SEO Audit & Growth Strategy - Technical SEO Implementation - Keyword Research & Competitor Analysis ✅ AI Integration & Intelligent Solutions - AI Chatbot Development & Customer Support Automation - RAG Architecture with Vector Databases (Pinecone, Qdrant) - AI Agents & Autonomous Workflow Automation ✅ Mobile Application - Android(Java & Kotlin) Application - iOS & Flutter Application It’s not just about making something look good. I always think about the people on the other side of the screen — what they need to know, what might make them hesitate, and what will help them take the next step. For a long time, I thought development work ended once a project was completed. But after working with clients and their services over the long term, my perspective gradually changed. Once a website or system is actually being used, you start to notice things that weren’t obvious during development. “Is this really easy to understand?” “Why does this have to be done manually every time?” “Couldn’t this be made simpler?” I really enjoy finding these small pain points, improving them one by one, and seeing how the experience gets better each time. Even at that scale, I still find it incredibly rewarding to see the systems I’ve built make someone’s work easier and contribute to the steady growth of their business. You don’t need to have everything figured out before reaching out to me. Even if you’re simply thinking, “I’m not sure what I need to build yet,” that’s completely fine. I’ll listen, ask the right questions, and work through the possibilities with you. I don’t want to be someone you work with once and never hear from again. I want to be the person you can come back to whenever something comes up — someone you can confidently think, “Let’s ask them about this.” Being able to watch a client’s business grow while continuing to grow alongside them is, for me, one of the most rewarding parts of this work. less -
Hire goranm16
Full-Stack Developer | AI Bots, LLM Apps & RAG | Next.js, Node.js, Python, I'm a full-stack developer specializing in AI bots and LLM-powered applications — not just the bot itself, but the complete product around it: frontend, backend, database, integrations, and deployment. Tech stack Frontend: React, Next.js (App...Full-Stack Developer | AI Bots, LLM Apps & RAG | Next.js, Node.js, Python, I'm a full-stack developer specializing in AI bots and LLM-powered applications — not just the bot itself, but the complete product around it: frontend, backend, database, integrations, and deployment. Tech stack Frontend: React, Next.js (App Router, SSR/ISR), TypeScript, Tailwind CSS, shadcn/ui Backend: Node.js (Express, NestJS), Python (FastAPI, Django), REST and GraphQL APIs, WebSockets for real-time chat AI / LLM: OpenAI API (GPT-4o, function calling, structured outputs), Anthropic Claude API, prompt engineering, streaming responses, token/cost optimization RAG & data: embeddings, vector databases (Pinecone, pgvector, Chroma), chunking strategies, semantic search over PDFs, docs, and knowledge bases Bots & channels: Telegram Bot API, Slack (Bolt SDK, slash commands, event subscriptions), webhook architectures, WhatsApp via Twilio Databases: PostgreSQL (with Prisma), MongoDB, Redis for caching, queues, and rate limiting Automation: Python-based automation, n8n / Make.com workflows, scheduled jobs, third-party API integrations (Stripe, CRMs, Google Workspace) Deployment & ops: Docker, VPS (Ubuntu, Nginx), Vercel, AWS (EC2, S3, Lambda), CI/CD with GitHub Actions, logging and error monitoring I focus on real systems that hold up in production — clear scope, fast execution, clean handoff. Not research demos or fragile prototypes. Most engagements start with a small pilot delivered in 1–2 weeks, then scale once the value is proven. What I build -AI & LLM bots (Telegram, Slack, internal assistants) with conversation memory, tool/function calling, and admin dashboards -Custom AI chatbots embedded in websites and SaaS products, with streaming UI and usage analytics -Document and PDF AI systems: ingestion pipelines, OCR when needed, vector search, cited answers (RAG) -Full web applications end to end — auth, payments, dashboards, APIs, deployment -AI copilots and internal tools that replace manual workflows (support triage, report generation, data entry) -Scraping and data pipelines feeding clean, structured data into your bot or database How I work -Clear scope agreed upfront, then fast execution -Business-outcome focused — every bot is measured in time saved or cost reduced -Founder-friendly communication: plain language, regular updates, honest timelines -Clean, maintainable, well-documented code your next developer can pick up easily -Start small, validate, then scale confidently Best fit clients -SaaS and tech startups adding AI features to their product -Founders who want a working AI bot, not a demo -Agencies adding AI capabilities for their clients -Ops-heavy businesses replacing manual workflows with AI assistants less -
Hire sara0346
As a passionate and experienced developer, I bring over 7 years of expertise in creating beautiful, bug-free websites and mobile apps. From startups to large enterprises, I deliver solutions that are not only functional but also captivating and user-friendly. I pride myself on paying attention to every detail,...As a passionate and experienced developer, I bring over 7 years of expertise in creating beautiful, bug-free websites and mobile apps. From startups to large enterprises, I deliver solutions that are not only functional but also captivating and user-friendly. I pride myself on paying attention to every detail, ensuring your design is brought to life with pixel-perfect precision, clean code, and well-documented processes. My goal is to make your project shine with both technical excellence and artistic flair, ensuring your users have a seamless and delightful experience. Feminine Charm & Precision: I combine creativity with technical expertise, making sure every detail of your project is executed with care. Personalized Support: From start to finish, I provide guidance, video tutorials, and support to ensure your experience is effortless. Global Experience: With clients worldwide, I understand diverse business needs and deliver solutions that drive results. What I Offer: Web Development: Custom websites that are sleek, responsive, and optimized for performance. Mobile Apps: Cross-platform iOS/Android apps with smooth functionality and elegant design. SaaS Solutions: Scalable, secure platforms that grow with your business needs. 3D & Visualization: Beautiful product designs, architectural renderings, and immersive AR/VR experiences. Microsoft 365 Business Integration: Optimizing tools for productivity, collaboration, and data management. Technologies I Love: Web: HTML5, CSS3, JavaScript, PHP, React, Laravel, Node.js Mobile: Swift, Kotlin, Flutter, React Native SaaS: Python, Ruby on Rails 3D: Blender, Autodesk 3ds Max, Unity 3D, Rhino3D Microsoft 365: Power BI, SharePoint, Teams, OneDrive Let’s make your vision come to life with a solution that’s as unique as your business! less -
Hire markom435
I am a Full-Stack Web Developer specializing in building modern, scalable, and secure web applications. I develop complete web solutions using technologies such as JavaScript, React.js, Vue.js, Node.js, Express.js, and database systems including MongoDB and SQL. My experience covers frontend development, backend API...I am a Full-Stack Web Developer specializing in building modern, scalable, and secure web applications. I develop complete web solutions using technologies such as JavaScript, React.js, Vue.js, Node.js, Express.js, and database systems including MongoDB and SQL. My experience covers frontend development, backend API development, authentication systems, dashboards, eCommerce platforms, and business applications. I also integrate AI features and automation solutions into web applications to improve efficiency and create smarter user experiences. Beyond web development, I have a strong background in cybersecurity, reverse engineering, and secure software development, allowing me to build reliable and resilient applications. My experience with C/C++, system programming, software engineering, 3D design, Graphic design, CAD/CAM & SolidWorks, SEO, Internet marketing, Photoshop and WordPress helps me understand complex technical challenges and create effective solutions. I focus on clean architecture, maintainable code, and delivering practical solutions that meet each client's goals. less -
Hire mayr81
I’m a versatile professional with experience in web and mobile development, AI automation, digital operations, and engineering project coordination. I help businesses build digital products, automate workflows, manage technical projects, and improve operations through practical and scalable solutions. My experience...I’m a versatile professional with experience in web and mobile development, AI automation, digital operations, and engineering project coordination. I help businesses build digital products, automate workflows, manage technical projects, and improve operations through practical and scalable solutions. My experience combines technical problem-solving, project management, automation, and business operations to help clients move faster and achieve better results. Services I Can Help With: ✔ Web, Mobile & Desktop Application Support ✔ AI Automation & Workflow Solutions ✔ Data Scraping & Process Automation ✔ CRM Setup & Outreach Systems ✔ Project Coordination & Workflow Documentation ✔ Client Communication & Reporting Why Clients Work With Me: ✔ Clear and professional communication ✔ Reliable and detail-oriented work ✔ Fast turnaround and organized workflow ✔ Strong understanding of both technology and business operations ✔ Long-term support and collaboration mindset I believe successful projects come from strong communication, practical execution, and attention to detail. If you’re looking for someone who understands both technical systems and business operations, I’d be happy to work with you. less
