Tell me about your idea, I’ll make the product from it. 10+ years of experience in iOS focused on complex UI, project architecting, UX design, and team-leading. I value simplicity and efficiency, I know the importance of great communication and understanding with a client and other engineers working on different layers of the infrastructure. My client says: he's obsessed with high quality and attention to detail, and he strives to find the best solutions possible. Check more to see the quality, you are paying for. I have strong debugging skills, do meticulously code and design reviews, can mentor others. Contact me to get the best quote for your application.

I am an Experienced financial markets software developer specializing in asset-agnostic, multi-user trading systems and algorithmic trading platforms. -C++ (17/20), C#, Python for ultra-low-latency trading infrastructure -Sub-microsecond execution paths, lock-free/zero-copy pipelines, custom allocators, CPU pinning, async I/O -FIX 4.x/5.x, FIX-FAST, ITCH/OUCH, CME iLink 2.0, CME MDP 3.0 — full protocol implementation & certification -High-speed market data processing: multicast UDP, depth aggregation, order-book reconstruction -Cross-venue arbitrage, market making, synthetic orderbooks, fast cancel/replace loops, burst execution -Execution & connectivity: PrimeXM, LMAX, IBKR (TWS & FIX), TT, FX/CFD brokers, Binance/Bybit/OKX/Coinbase, custom FIX hubs -Market data (for backtesting/analytics, not execution): Databento, Polygon, dxFeed, Alpaca, SIAC/OPRA -Crypto infrastructure: latency-optimized WS/REST clients + Uniswap V2/V3 & 1inch smart-contract execution -MT4/MT5 server-side engineering: A/B-book routing, LP aggregation, dealer logic, bridge development -Trading platforms: MetaTrader 4/5, TradingView (Pine Script), Trading Technologies (TT), QuantConnect, Interactive Brokers TWS, Polymarket, HummingBot.

🚀 Senior Laravel Developer | PHP Developer | Full Stack Developer | Vue.js Developer I help startups, SaaS companies, and growing businesses build scalable web applications, SaaS platforms, backend systems, and high-performance APIs using Laravel, PHP, Vue.js, JavaScript, and cloud technologies. For 7+ years, I’ve worked as a Laravel Developer, PHP Developer, CodeIgniter Developer, and Full Stack Developer delivering secure, scalable, and production-ready applications for SaaS, ecommerce, CRM, ERP, fintech, education, and enterprise platforms. I specialize in full stack development — from scalable backend architecture and REST API development to responsive frontend interfaces and cloud deployment. 💡 Why clients hire me ✔ 7+ years of full stack development experience ✔ Built and optimized 50+ web applications & SaaS platforms ✔ Strong Laravel, PHP, Vue.js & JavaScript expertise ✔ Scalable SaaS architecture & API-driven systems ✔ Clean, secure, maintainable code ✔ Fast communication & reliable delivery ✔ Long-term support and scalable business solutions Over the years, I’ve developed: • SaaS platforms • CRM & ERP systems • Ecommerce & marketplace platforms • Booking & scheduling systems • Enterprise dashboards & admin panels • API-driven web applications • Cloud-hosted business platforms • Automation & internal management systems ⚙️ Backend Development | Laravel, PHP & Scalable APIs As a Senior Laravel Developer and PHP Developer, I specialize in building scalable backend systems, high-performance REST APIs, and cloud-ready SaaS applications with clean, maintainable architecture. Over the years, I’ve developed everything from custom business platforms and multi-tenant SaaS systems to enterprise dashboards, ecommerce backends, and API-driven applications handling complex workflows and large-scale data. My backend experience includes working extensively with Laravel, PHP, CodeIgniter, and Symfony to build secure authentication systems, payment integrations, queue-based background processing, and scalable microservices architecture. I regularly develop and integrate REST APIs, connect third-party services like Stripe and PayPal, and optimize backend performance for speed, stability, and long-term scalability. As a Backend Developer and Full Stack PHP Developer, I focus on writing clean, production-ready code that supports fast-growing applications, reliable infrastructure, and seamless frontend-to-backend communication. 🎨 Frontend Development | Vue.js, JavaScript As a Vue.js Developer and Frontend Developer, I create responsive, scalable, and modern frontend applications with clean UI architecture and optimized user experience. Frontend technologies: • Vue.js • JavaScript / jQuery • HTML5 / CSS3 • Tailwind CSS • Bootstrap • Responsive UI Development • Dashboard Development • SaaS Frontend Development Built frontend systems for: • SaaS dashboards • CRM interfaces • Admin panels • Analytics systems • Marketplace applications • Business management platforms 🗄️ Database Development & Optimization Strong experience designing scalable database architecture and optimizing high-traffic applications. Technologies: • MySQL • PostgreSQL • MariaDB Focus areas: • Query optimization • Indexing strategies • Performance tuning • Large-scale data handling • Scalable database architecture ☁️ Cloud & DevOps Experienced with production deployments, cloud infrastructure, and scalable SaaS environments. Cloud platforms: • AWS • Google Cloud Platform (GCP) • Microsoft Azure Experience includes: • Cloud deployment • CI/CD pipelines • Docker environments • Server optimization • Secure production deployment 🚀 SaaS & Enterprise Development I help businesses build scalable SaaS applications, enterprise systems, and custom web platforms optimized for growth, performance, and maintainability. Core expertise: • SaaS Development • Enterprise Software Development • Marketplace Development • CRM & ERP Development • Booking System Development • Ecommerce Development • Custom Web Application Development • Scalable Web Application Development 📈 Results Delivered ✔ Improved application performance by 40-70% ✔ Built scalable SaaS platforms supporting thousands of users ✔ Integrated 30+ third-party APIs and payment systems ✔ Optimized legacy Laravel & PHP systems into scalable architectures ✔ Delivered MVP platforms in 4-8 weeks for startups 💬 If you need a Laravel Developer, PHP Developer, Vue.js Developer, Full Stack Developer, Backend Developer, SaaS Developer, or REST API Developer, I can help you build secure, scalable, and modern web applications tailored to your business goals.

🚀 Enterprise-Grade Solutions with React, PHP Laravel & Full Stack Development 🚀 📅 10+ years of experience | Master’s in Computer Science 👥 Leading a team of 10+ developers 📦 50+ production-ready projects delivered 💰 $18M+ business value generated With 10+ years in software engineering, I’m a Senior Full Stack Developer focused on building scalable, high-performance systems. I’ve delivered 50+ projects across fintech, healthcare, marketplaces, and real estate — from concept to production. As a lead developer, I don’t just code — I lead architecture, manage delivery, and ensure every Full Stack Developer on my team produces production-ready results. My experience includes building systems with 99% uptime, designed to scale with growing user demand and reduce time-to-market by up to 50%. I also bring strong expertise in PHP Laravel, working as a PHP Laravel Developer to modernize legacy systems and build robust backend platforms. Whether it's a modern SaaS platform or upgrading an existing PHP Laravel application, I ensure smooth scalability and long-term stability. 💻 Full Stack React, PHP Laravel & System Architecture I work as a Full Stack Developer, Full Stack React Developer, and React Node.js Developer, delivering scalable solutions using React.js, Frontend React, Next.js (Nextjs), and powerful backend systems. A key part of my stack includes PHP Laravel, where I design backend architectures, APIs, and enterprise systems. As a PHP Laravel Developer, I build secure and maintainable applications that integrate seamlessly with modern frontend frameworks like React.js. My team frequently combines React Node.js systems with PHP Laravel backends, ensuring flexibility for both new builds and legacy integrations. This allows us to support everything from SaaS platforms to enterprise dashboards. 🗄 Databases, Supabase & Backend Systems As a Full Stack Developer, I design high-performance data systems using MySQL, PostgreSQL, and SQL. I often use PHP Laravel with MySQL to build stable backend systems, while also integrating Supabase for real-time functionality. Many of our systems combine PHP Laravel, Supabase, and modern React Node.js architecture. 🧠 Built scalable systems using PHP Laravel, MySQL, and PostgreSQL 🔄 Integrated Supabase for real-time data workflows ⚡ Optimized backend performance using PHP Laravel 💸 Reduced infrastructure costs with efficient backend architecture As a PHP Laravel Developer and Full Stack Developer, I ensure backend systems are secure, scalable, and optimized. 🎯 Frontend React & Next.js Our team builds high-performance interfaces using React.js and Next.js (Nextjs). As a React Developer and Frontend React expert, I ensure seamless integration between frontend and backend systems. We frequently connect Frontend React applications with PHP Laravel backends, delivering fast and responsive SaaS platforms. ⚡ Faster load times and optimized performance 📉 Improved conversion rates by 30–40% 📈 Better engagement across web platforms ⚡ Scalability, SaaS & AI Integration Scalability is a core focus of my work as a Full Stack Developer. I design systems that scale to 80K–120K users using Supabase, React Node.js, and PHP Laravel backend services. I also integrate AI solutions (LLMs, RAG pipelines) into platforms, connecting tools like Dify and Langflow with React Node.js and PHP Laravel applications. Whether upgrading an existing PHP Laravel system or building a modern SaaS platform with Next.js, I ensure your product is future-ready. 🎯 Frontend React & Next.js Our team builds high-performance interfaces using React.js and Next.js (Nextjs). As a React Developer and Frontend React expert, I ensure seamless integration between frontend and backend systems. We frequently connect Frontend React applications with PHP Laravel backends, delivering fast and responsive SaaS platforms. ⚡ Faster load times and optimized performance 📉 Improved conversion rates by 30–40% 📈 Better engagement across web platforms ⚡ Scalability, SaaS & AI Integration Scalability is a core focus of my work as a Full Stack Developer. I design systems that scale to 80K–120K users using Supabase, React Node.js, and PHP Laravel backend services. I also integrate AI solutions (LLMs, RAG pipelines) into platforms, connecting tools like Dify and Langflow with React Node.js and PHP Laravel applications. Whether upgrading an existing PHP Laravel system or building a modern SaaS platform with Next.js, I ensure your product is future-ready. 🤝 Why Work With Me Proven Full Stack Developer with 50+ delivered projects Experienced React Node.js Developer and PHP Laravel Developer Strong expertise in React.js, Next.js, and backend systems Solid experience with PHP Laravel, MySQL, PostgreSQL, and Supabase Focus on scalability, performance, and business outcomes If you’re looking for a Full Stack Developer, React Developer, or PHP Laravel Developer with strong experience in React.js, Supabase, MyS

I am a PHP developer with experience in creating web applications for industries like logistics, proptech, healthtech, e-commerce, finance, and SaaS. I develop solutions that align with business objectives, focusing on enhancing operational efficiency and user experience. I specialize in PHP development using frameworks like Laravel and Symfony. My expertise covers custom PHP solutions tailored to specific business needs, supporting full-cycle web development from database architecture to application deployment. I prioritize clean code, maintainable architecture, and scalability in every project. Key areas of expertise: • PHP development using Laravel and Symfony • Custom PHP solutions for diverse business applications • Web development with HTML, CSS, JavaScript, and jQuery • Database management with MySQL and PostgreSQL • API development and integration with RESTful APIs • Full-cycle web application development • Version control with GitHub PHP is at the core of my development approach. I leverage Laravel for rapid development to create secure, scalable applications. Symfony allows me to build complex, enterprise-level systems with its reusable components, service-oriented architecture, and strong emphasis on performance optimization. For database management, I work extensively with MySQL and PostgreSQL. I design relational databases optimized for data integrity, performance, and scalability. My experience includes handling large datasets, complex queries, and ensuring seamless data flow within applications. Query optimization, indexing strategies, and normalization techniques are integral to my database management approach. I develop APIs based on RESTful principles, enabling seamless integration with third-party services and internal systems. My work includes creating custom APIs for web and mobile applications, ensuring secure data communication across platforms. I focus on API security, efficient data handling, and robust error management to support business-critical integrations. In front-end development, I utilize HTML, HTML5, CSS, and JavaScript to build responsive and intuitive user interfaces. I also incorporate jQuery to enhance interactivity, providing dynamic features that improve user engagement. I use GitHub to manage code changes, facilitate team collaboration, and streamline deployment processes. Version control practices help maintain code integrity, support agile development, and ensure efficient project management through branching strategies and continuous integration workflows. Using Laravel, I build secure and scalable applications with rapid development capabilities, leveraging its robust ecosystem, middleware support, and testing tools to deliver maintainable codebases. Symfony's flexibility allows me to create modular, high-performance applications tailored to complex business requirements, utilizing its dependency injection container and event dispatcher components. My approach to database design includes creating normalized structures for efficient data storage and retrieval. I use MySQL for applications requiring transactional consistency and PostgreSQL for analytical workloads that demand complex queries and large data handling. I implement advanced SQL techniques, such as stored procedures, views, and triggers, to enhance database functionality and performance. API development is crucial for modern web applications. I design and implement RESTful APIs that enable seamless integration with mobile apps, third-party services, and cloud platforms. My API solutions are secure, scalable, and designed for efficient data exchange, supporting real-time functionality when needed. I ensure compliance with API standards, such as OpenAPI specifications, to maintain consistency and reliability. In front-end development, I focus on creating user-friendly interfaces with clean layouts and responsive design principles. I use HTML and CSS for structure and styling, while JavaScript and jQuery add interactive elements that enhance the user experience. My goal is to deliver visually appealing and functional applications that work seamlessly across devices, optimizing for both performance and accessibility. Version control with GitHub supports my collaborative development process. I manage code repositories, track changes, and implement branching strategies to ensure smooth workflows in both solo and team environments. This approach reduces development risks and maintains code quality throughout the project lifecycle, enabling efficient code reviews, issue tracking, and continuous deployment. My development process is driven by best practices and portfolio includes a variety of web applications tailored to different business needs, utilizing PHP, Laravel, Symfony, MySQL, PostgreSQL, and RESTful APIs. Let's discuss how I can contribute to your project and deliver PHP solutions that align with your business goals. Feel free to reach out to start the conversation.

With over 13 years of experience and 14,000+ hours on Upwork, I create Ruby on Rails web applications that are not only functional but built to last. Able to take a project at any stage — from an initial idea to a complex, production-ready system — and manage every aspect: backend architecture, integrations, performance optimization, and long-term maintenance. I have successfully delivered large-scale projects across multiple domains — from a hotel booking engine to a fintech platform for investors, a job search and recruitment platform and many others. I leverage modern tools such as GitHub Copilot for documentation, autocomplete, code optimization, and SQL query improvements, while using AI assistants like ChatGPT and Gemini to speed up research and handle small tasks such as generating regular expressions. I also understand the importance of AI in boosting development speed, productivity, and automation, and apply it thoughtfully to enhance my workflow without compromising code quality. Whether you need to launch a new product, rescue a struggling codebase, or scale your existing platform, I bring the skills, reliability, and insight to get it done right the first time.

⭐ Senior Full-Stack Developer & 𝐈𝐁𝐌 𝐄𝐜𝐨𝐬𝐲𝐬𝐭𝐞𝐦 𝐂𝐥𝐨𝐮𝐝 𝐍𝐚𝐭𝐢𝐯𝐞 Architect. I help startups and enterprises build scalable SaaS platforms, high-performance AI agents, and seamless API integrations. Top 𝟏𝟎% 𝐔𝐩𝐰𝐨𝐫𝐤 𝐭𝐚𝐥𝐞𝐧𝐭 with a 𝟏𝟎𝟎% Job Success Score and 4+ years of experience delivering production-ready solutions. I Solve Complex Tech Challenges by Rebuilding, Optimizing & Delivering Full-Stack Solutions-Here's How I’ve Done It: 🌐 Case 1: Rewriting Legacy Java → Modern React (Solo Dev Mission) ⚡ Challenge: A client needed their outdated Java-based desktop app transformed into a scalable React web app—with no existing design or frontend structure. 🎯 Solution: ✅ Rewrote entire Java logic into React + TypeScript 🔄, collaborating closely with the client to design the UI from scratch. ✅ Dedicated Windows server deployment 🖥️ – Configured security, performance, and CI/CD pipelines solo. 📈 Result: A future-proof React app with a clean, maintainable codebase, fully hosted on a custom server. --------------------------------------------------------------------------------------------------------------------- 🌐 Case 2: Full-Stack SaaS Powerhouse (React + PHP + React Native + Next.js) ⚡ Challenge: A startup needed an all-in-one platform: Web app (React) | Mobile app (React Native) | Backend (PHP) | Blazing-fast Next.js landing page (AWS hosted) 🎯 Solution: ✅ Built a 98+ PageSpeed Next.js landing page 🚀 with optimized assets and SSR. ✅ Developed React admin dashboard + PHP API (MySQL) for core business logic. ✅ Created React Native app 📱 syncing with the same backend. ✅ Team collaboration to deploy full stack on AWS (EC2, RDS, S3) ☁️. 📈 Result: A unified SaaS ecosystem with seamless cross-platform performance. --------------------------------------------------------------------------------------------------------------------- ✔️ My Expertise: ⚡ Frontend: React, Next.js, TypeScript, Tailwind CSS ⚡ Backend: PHP (Laravel/Symfony), Node.js, Java ⚡ Mobile: React Native (iOS/Android) ⚡ Databases: MySQL, MongoDB, Firebase ⚡ Cloud/DevOps: AWS, Vercel, Docker, CI/CD 👉 Let’s turn your idea into a bulletproof product!

I develop AI agents, RAG systems, AI-powered document search, and workflow automation for business applications using Python, LangChain, OpenAI, Anthropic, Azure OpenAI, vector search, and modern LLM workflows. I also have 15+ years of production .NET experience with C#, ASP.NET Core, APIs, databases, cloud systems, integrations, logistics software, performance optimization, and legacy modernization. Numbers: - $80K+ earned on Upwork - 23 Upwork jobs - 1,100+ Upwork hours - 15+ years in software development - 50+ delivered software projects I can help with: - AI agents using Python, LangChain, OpenAI, Anthropic, and Azure OpenAI - RAG over documents, tickets, orders, products, reports, and knowledge bases - AI document search, semantic search, data extraction, and summarization - LLM workflows with validation, business rules, and human review - AI features inside existing .NET / ASP.NET Core applications - ASP.NET Core APIs, SaaS platforms, admin panels, and business systems - Legacy .NET Framework, ASP.NET MVC, WebForms, and VB.NET modernization - SQL performance optimization, background jobs, queues, caching, and integrations - Logistics software: TMS, WMS, order management, rate engines, shipment tracking, and carrier APIs For the AI/RAG part, I can use Python/LangChain. For production backend, APIs, admin panels, and enterprise integration, I can use .NET / ASP.NET Core. Tech stack: Python, LangChain, OpenAI, Anthropic, Azure OpenAI, RAG, embeddings, vector search, .NET, C#, ASP.NET Core, Blazor, SQL Server, PostgreSQL, MongoDB, Redis, EF Core, Dapper, Azure, AWS, RabbitMQ, Kafka.

Senior full-stack engineer specializing in .NET, Node js, Azure, and AI-powered solutions that cut development time and operational costs. I integrate LLMs (Claude / Anthropic API, OpenAI) directly into applications — shipping real production features, not just prototypes. With over 10 years of experience in software development, I've had the privilege of collaborating with companies across Germany, the United Kingdom, Australia, and the USA. I specialize in building AI-powered and AI-automated solutions that reduce development time and operational costs for my clients. My core stack: .NET, Node js, Angular, React Native, Next.js, Docker, Azure, Headless CMS, MSSQL, PostgreSQL, Cosmos DB, and MongoDB. I also work with MCP servers, Claude Code, and AI-assisted development pipelines to accelerate delivery without sacrificing code quality. My journey has taken me through enterprise projects from inception to completion, giving me a comprehensive understanding of the full development lifecycle. I focus on crafting robust, scalable solutions — now augmented with AI automation where it genuinely adds value: marketplace integrations, data enrichment, intelligent document processing, customer support automation, and developer tooling. In summary, I combine 10+ years of full-stack engineering with real, production experience using Claude and modern AI tooling. With a keen eye for detail and a commitment to excellence, I help clients ship faster, automate smarter, and deliver cutting-edge software solutions.

Hello there, I'm a seasoned web developer hailing from Ukraine with a wealth of experience in both corporate settings and now as a dedicated freelancer. My journey began with crafting themes and plugins for websites within company environments, but I've since transitioned to freelance work where I've honed my skills even further. My expertise spans various facets of web development, with a particular focus on ecommerce projects and landing page optimization. I specialize in JavaScript and PHP, adept at breathing life into websites with seamless functionality and dynamic features. Whether it's crafting layouts from PSD templates or ensuring pixel-perfect precision, I take pride in delivering work that exceeds expectations. Over the years, I've delved into the intricacies of site optimization for improved Google rankings and accessibility, while also delving into the realm of SEO-friendly HTML and meta tag creation for enhanced social media visibility. Since 2018, I've embraced technologies like Laravel and VueJS, leveraging them to tackle complex projects ranging from server-rendered applications to API integration and data management. My skill set extends across a wide array of technologies, including: Technologies: - PHP 7+ -- Laravel -- Elastic search -- Wordpress ( creating themes and plugins ) -- WooCommerce -- Redis -- Custom scripts -- VM -- Docker -- bash scripts - Javascript -- VueJs -- Nuxt -- JQuery -- AngularJS -- Vuetify -- Quasar -- Cordova -- ChartJS - Databases -- Mysql -- Postgresql -- MongoDB - Design -- Html5 -- Css -- Sass / Scss -- Bootstrap -- Material design -- Pixel perfect codding -- Seo murcup -APIs -- Amazon Product Advertising API 5.0 -- Avantlink -- Google maps -- Google analytics -- IMDb (and same) -- TelegramAPI -- SteamAPI -- Google tag manager