📢 Available for new projects 📢 I am a Senior Backend Developer with over 10 years of commercial experience, focused on building scalable, secure, and high-performance backend systems that power modern web and mobile applications. As a dedicated professional, I work with complex architectures where reliability, performance, and long-term maintainability are critical. I help businesses transform ideas into robust products by applying proven software engineering practices and deep expertise in backend development, cloud infrastructure, and system design. My primary focus is backend development using Node.js, TypeScript, PostgreSQL, and cloud-native technologies. I specialize in designing APIs, microservices, distributed systems, and scalable data architectures capable of supporting growing products and high user loads. Alongside strong backend expertise, I have solid Full Stack experience. This allows me to efficiently collaborate across the entire product lifecycle, from database design and server-side logic to frontend integration and user-facing features. I understand how all layers of an application work together, enabling balanced technical decisions and faster product delivery. Throughout my career, I have worked across Fintech, AI, EdTech, Healthcare, and Retail industries. I’ve contributed to SaaS platforms, enterprise systems, and custom software solutions, consistently maintaining high engineering standards and delivering reliable business outcomes. My Go-To Tools: Backend: Node.js, TypeScript, NestJS, Express.js Databases: PostgreSQL, MongoDB, Redis Cloud & DevOps: AWS, Docker, Kubernetes, CI/CD Architecture: REST APIs, GraphQL, Microservices, Event-Driven Systems Frontend (Full Stack): React, Next.js, JavaScript, TypeScript Design & Collaboration: Figma, Agile, Product Development 💬 I am ready to start work right now — just drop me a message!

🚀 Scalable Solutions with React & Full Stack Development 🚀 📅 20+ years of experience & Master’s in Computer Science 👥 Leading a dedicated team of 25 software developers 📦 70+ completed production-ready projects 💰 $25M+ value generated through high-level architectural solutions With 20+ years of experience, I am a Full Stack Developer, Web Developer, and Mobile App Developer delivering scalable SaaS platforms, enterprise systems, and modern web development solutions for fintech, healthcare, marketplaces, logistics, and real estate industries. As the founder of a 25+ engineer software company, I lead teams building production-ready applications with clean architecture, high availability, and long-term scalability. Our team has successfully delivered 70+ production-ready projects supporting large user bases and helping businesses improve operational efficiency, scalability, and product delivery speed. We specialize in enterprise-grade SaaS platforms, React applications, backend systems, and cross-platform mobile app development. Every Full Stack Developer, React Native Developer, and Web Developer on my team is experienced in scalable frontend and backend architecture. We build robust React Node applications, business dashboards, APIs, marketplaces, and SaaS systems with clean, maintainable code. 💻 Core Technologies & Database Architecture Our core stack includes React.js, Next.js, Node.js, React Native, Flutter, PHP, Laravel, Python, TypeScript, Supabase, Firebase, PostgreSQL, MongoDB, and MySQL. As a React Native Developer and Mobile App Developer team, we create high-performance cross-platform mobile applications for iOS and Android with modern UI/UX and scalable backend infrastructure. As a Web Developer and Full Stack Developer, I design scalable database systems using MySQL, PostgreSQL, MongoDB, and Supabase with optimized schemas, secure APIs, and realtime functionality. We frequently deploy solutions on AWS, Google Cloud, and Vercel while ensuring scalability, security, and performance. We also provide complete web development services including frontend implementation, backend engineering, API integrations, cloud deployment, and DevOps workflows. Our experience includes enterprise SaaS systems, marketplaces, dashboards, PWAs, and mobile platforms. ⚡ AI Integration & Scalable Systems We specialize in AI-powered Full Stack solutions integrating OpenAI, ChatGPT, RAG systems, automation workflows, and AI APIs into modern web and mobile applications. As a Python Developer and AI-focused engineering team, we build intelligent backend services, AI assistants, automation systems, and scalable SaaS platforms. Whether modernizing legacy PHP systems, building React Native applications, or developing modern React Node SaaS products, we focus on scalable architecture and measurable business results. 👥 Delivering applications with 120K+ active users Our experience includes: • SaaS platforms & marketplaces • Enterprise dashboards & admin systems • AI-powered applications • Mobile app development • React Native development • Custom APIs & backend systems • Web development & frontend engineering • Realtime systems & cloud infrastructure • WordPress developer services for CMS-driven projects ⚙️ Additional Expertise React.js, Next.js, Vue.js, Svelte Node.js, PHP, Laravel, Python React Native Developer & Mobile App Developer solutions Flutter mobile applications Supabase, Firebase, PostgreSQL, MySQL, MongoDB AWS, Google Cloud, Vercel AI integrations & automation workflows MERN stack architecture API integrations & scalable backend systems 🤝 Why Work With Me ✔ 70+ completed production-ready projects ✔ Experienced Full Stack Developer & Web Developer team ✔ Strong React Native Developer and Mobile App Developer expertise ✔ Deep experience with scalable SaaS architecture ✔ Focus on performance, scalability, and clean code ✔ Long-term product development and technical leadership If you need a Full Stack Developer, Web Developer, Mobile App Developer, React Native Developer, Python Developer, or scalable SaaS engineering team — let’s connect. 👉 Click “Invite” or “Hire” and let’s discuss your project.

Senior Full-Stack Developer | AI + Automation Services I’m a Senior Full-Stack Developer with 10+ years of experience building scalable, secure, and high-performance web applications. I help businesses develop backend-heavy platforms, real-time systems, and modern React-based web apps from scratch to production. My core services include: • Custom backend development using Node.js & Python • REST & GraphQL API development • Real-time systems with WebSockets • AI integrations for SaaS platforms • Gaming backend systems (leaderboards, player logic, real-time updates) • Crypto & blockchain integrations (wallets, transaction logic) • Payment gateway & third-party API integrations • React.js & Next.js frontend development • Cloud deployment on AWS & DigitalOcean AI & Automation Expertise: • Claude & GPT API integrations for SaaS platforms • AI chatbot & assistant development • Document processing (OCR + LLM pipelines) • RAG-based systems using vector databases (Pinecone, FAISS) • AI workflow automation & multi-step pipelines • Real-time AI features (WebSockets, streaming responses) I focus on building production-grade systems that are scalable, maintainable, and ready for long-term growth. If you're looking for a senior developer who understands complex backend systems, React performance, and gaming/crypto ecosystems, let’s discuss how I can help build your next platform.

"Neil was a rockstar! He understood the scope of the project right away and was a great communicator along the course of the project. He constantly went above and beyond to keep the project on schedule. " I graduated in Computing with Cognitive Psychology, and became a freelance programmer. Initially this was Flash development and then more broadly Web Development. In recent years I have focused on Wordpress Development, for example custom plugins. I have been with Upwork since almost the beginning, and before that was a member of Elance. Over the years I have mastered dozens of technologies in the field, and have constantly strived to keep my skill set up-to-date. My goal is to leverage my diverse skill set to deliver exceptional web solutions that meet clients' needs and drive their business success. I am committed to continuous learning and staying updated with the latest industry trends and technologies. One of my core strengths as a freelance web programmer is my first-rate communication skills. I prioritize clear, concise, and proactive communication with my clients, ensuring that I fully understand their requirements and expectations from the outset. My clients consistently praise my ability to "read between the lines" and provide insightful solutions that align with their real needs. Through regular updates, detailed information, and prompt responses to queries, I ensure that the lines of communication are always open, fostering a collaborative and transparent working relationship. This approach not only helps in promptly addressing any issues that arise but also builds trust and satisfaction, leading to successful project outcomes. Additionally, I provide thorough documentation and comprehensive instructions for the client’s team, ensuring they have the necessary resources to continue managing the project effectively after completion. - **Programming Languages:** Java, JavaScript, Typescript, PHP, C#, SQL, CSS, HTML5 - **Frameworks and Libraries:** React, jQuery, Bootstrap - **Tools and Platforms:** Git, Google Cloud Platform, VS Code, Webpack, Ant, Babel, MySQL,Xampp, Wordpress "Neil developed a small WordPress plugin for my business. It's working great and Neil was very quick with resolving minor bugs that are of course inevitable with any software project. He showed great initiative and came up with excellent solutions/improvements that I could not have found. Communication was very easy aswell. All in all great value at a fair price and I'm happy with the outcome." "It was pure pleasure to work with Neil. He directly understands the task and works hard to complete it in time. We can only recommend Neil as we were very happy with this work." "Excellent developer and programmer. We got Neil to help us create a custom plugin for our web app. He was very proactive at providing solutions to the different challenges we faced and provided all documentation and instructions as requested. I highly recommend Neil and look forward to working with him in the future." "Neil was excellent at understanding what we wanted to accomplish and running with it. He has a very good ability to "read between the lines" which makes things go smoothly. I would absolutely hire him again." "Very good service! Neil developed an individual audio editor for us. He proceeded very professionally and implemented everything to our complete satisfaction. Thank you very much!" "Neil worked on a CL executable that augmented a geo-referenced set of data by communicating with Google services. He was reliable, flexible, added value to the project and required virtually no oversight to complete the tasks. Really enjoyed working with Neil and will track him down again for things in his skill set. Thanks Neil!!" "Neil is a very hard working developer. He does a great job of being upfront on the work that needs to be done. His communication is second to none. It was a pleasure to work with him." "This is a very complex JavaScript component. The PREVIOUS developer spent three months and did a crap job. I spent ten hours just to try to explain to him why his work does not meetto the requirements. We had to pull the plug at the end. Neil did a fantastic job. All the requirements are met on the first delivery, and he delivered it in only two weeks. I am so happy that I am speechless. This shows his qualities: he is very capable and very diligent at the same time. This makes a developer very valuable. Thank you Neil!." "Neil was great to work with. Timely, experienced and very cooperative. Gives suggestions for a better solution if he notices that something is off. If you hire Neil, you won't be disappointed!"

Most backend systems don't fail because of bad developers. They fail because no one took real ownership, of performance, of scalability, of the decisions that matter when traffic spikes or a payment gateway breaks. That's the gap I fill. I'm a Senior Java Spring Boot Engineer with 9+ years of experience building backend systems for fintech platforms, high-compliance environments, and cloud-native microservices. I take full ownership from development to production — not just the next ticket on the board. 🏆 Top Rated Plus — Top 3% of developers on Upwork 💼 9+ years building scalable backend & cloud-native systems 📦 7000+ Upwork hours with consistent 5★ feedback 💰 20+ enterprise-grade platforms delivered globally 🌍 Available across EST, CET, and PKT timezones ⚙️ 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 Backend & Microservices: Java 8–21, Spring Boot 3, Spring Security, Hibernate/JPA, REST/gRPC, Kafka, Event-Driven Architecture Cloud & DevOps: AWS (Lambda, ECS, S3, Aurora), Docker, Kubernetes (EKS), CI/CD (GitHub Actions, CodePipeline) Data & Messaging: PostgreSQL, MySQL, MongoDB, Redis, Kafka Streams Security & Testing: OWASP Top 10, RBAC, JWT/OAuth2, JUnit, Mockito, Testcontainers Frontend & Integration: React, TypeScript, Third-party APIs, Payment Gateways AI-Accelerated Development: GitHub Copilot, Cursor, Bolt.new — faster delivery, smarter workflows, automated testing ⭐ 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐓𝐡𝐚𝐭 𝐒𝐩𝐞𝐚𝐤 𝐟𝐨𝐫 𝐓𝐡𝐞𝐦𝐬𝐞𝐥𝐯𝐞𝐬 𝗚𝗹𝗼𝗯𝗮𝗹 𝗙𝗶𝗻𝗮𝗻𝗰𝗶𝗮𝗹 𝗠𝗲𝗱𝗶𝗮 — Rebuilt and deployed on AWS S3 + CloudFront. Delivered 95+ PageSpeed score, 67% faster load times, 43% increase in organic traffic, and 35% reduction in bounce rate. 𝗗𝗲𝗰𝘆𝗽𝗵𝗮 — Contributed to a premier financial intelligence platform trusted by business and financial professionals across the MENA region for 10+ years. Integrated financial APIs, payment gateways, and real-time data feeds using Spring MVC, Oracle, and WebSockets. 𝗕𝗮𝗵𝗿𝗮𝗶𝗻 𝗣𝗿𝗶𝘃𝗮𝘁𝗲 𝗠𝗮𝗿𝗸𝗲𝘁 — Built a secure electronic share registry system for closed shareholding companies, integrated directly with Bahrain Clear as part of the exchange's core infrastructure. High-compliance fintech environment using Spring Boot, Spring Security, and Angular 9. 💡 𝐖𝐡𝐲 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐓𝐞𝐚𝐦𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 I think in systems, not just tickets. I look at the full picture — performance bottlenecks, integration risks, deployment reliability, and long-term maintainability. I work independently or inside existing teams, communicate clearly throughout, and deliver production-ready code that doesn't need babysitting after handoff. 📩 𝐋𝐞𝐭'𝐬 𝐓𝐚𝐥𝐤 Have a backend challenge or a platform to build? Message me directly or let's jump on a quick 15-minute call — I'll give you a direct technical assessment of your system and the best path forward. 🔑 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 Java Developer · Spring Boot Developer · Microservices Architecture · Fintech Backend · AWS Backend Developer · REST API Development · Kafka · Distributed Systems · Enterprise Java · Cloud Native · Hibernate · Backend Engineer · PostgreSQL · Docker · Kubernetes · Spring Security · Event-Driven Architecture

☛I am a full time Web/Front-End/Mobile Developer, boasting over four years of extensive experience in the realm of software development. ➤Proficient in a multitude of technologies and frameworks including : ✓ NextJS, ✓ReactJS ✓Rect Native ✓NodeJS ✓Redux ✓Zustand ✓Formik ✓Docker ✓REST ✓Tailwind ✓Firebase ✓JavaScript ✓CSS ✓HTML5 ✓Git ✓Redux ✓Figma ✓Jira ✓AI ➤I specialize in crafting exceptional web experiences. ➤Additionally, I excel in Mobile development, particularly with React Native, having successfully delivered over ten applications. ☛As a dedicated full-time freelancer, I am committed to collaborating seamlessly within teams and thrive on projects requiring enhancements to existing codebases.

Hi, I’m Kaushik Patel — a results-driven Full-Stack Developer helping startups, agencies, and businesses build modern websites, scalable web apps, and AI-powered solutions. I specialize in creating fast, secure, and business-focused applications using modern technologies and automation tools. 🔥 What I Offer: ✅ Custom Web Application Development ✅ AI Chatbots & AI Automation ✅ SaaS & Admin Dashboard Development ✅ React.js / Next.js Frontend Development ✅ ASP.NET & Node.js Backend Development ✅ WordPress & WooCommerce Solutions ✅ API Integration & Workflow Automation ✅ Website Redesign & Performance Optimization 💡 Tech Stack: Frontend: React.js, Next.js, Angular, Vue.js, Tailwind CSS Backend: ASP.NET, C#, .NET Core, Node.js, Laravel AI & Automation: ChatGPT API, AI Chatbots, Business Automation Database: MySQL, PostgreSQL, MongoDB, Firebase Cloud & DevOps: AWS, Docker, CI/CD 🎯 I focus on delivering clean code, smart solutions, fast communication, and long-term support that helps businesses grow. If you need a reliable developer for your next project, let’s connect and build something amazing together. Thanks, Kaushik P.

I am a web developer with 10+ years of experience and a Master's degree in Software Engineering. I specialize in building custom web calculators, forms, and interactive web applications that help businesses generate leads, automate calculations, and improve user engagement. I have worked on a wide range of projects, from simple calculators to complex logic-based tools with API integrations, dynamic data processing, and CRM connections. What I can do for you: Build custom web calculators (finance, pricing, ROI, etc.) Create multi-step forms and quizzes with logic Integrate calculators with APIs, Google Sheets, or CRMs Embed solutions into any website Optimize performance and user experience Tech stack: JavaScript, jQuery PHP, MySQL HTML5, CSS3 AJAX WordPress, OpenCart Yii2 I focus on clean, reliable solutions and clear communication. Most of my projects are delivered as ready-to-use tools that can be easily integrated into your website.

🏅 Top Rated Plus Freelancer 🕒 1400+ hours on Upwork ✅ 100% Job Success Score I am a results-oriented bilingual with 12+ years of experience professional who is willing to work with clients worldwide. In my case, I am open to working with startup companies, small businesses, and even multi-national firms. I am deeply involved in all my projects from start to finish. I listen to my clients attentively and provide them a vision for what they want, and then I collaborate with them to create and execute a plan of action. I continuously offer my clients the pros and cons of each choice they make and convey my recommendations for their selections. I would like to give quick short profile summary as below Skills ---------------------------------------------------------------------------------------- • 11+ Years of IT Experience relevant to Java with BFSI domain like Banking & Insurance • Core skills SpringBoot, RESTful webservices, Microservices, JPA • Experience in Unit Testing with JUnit5, Mock/Mockito • Good experience with working on front end applications using JavaScript, JQuery and Bootstrap. • Strong experience with Agile or Scrum methodologies. • Good communicator in English • Experience with SQL Databases (e.g. Oracle) • Strong experience with GIT/BitBucket, JIRA, Jenkins, Confluence, Docker. • Good experience working with Tomcat, Jboss, WildFly • Experience working on Cloud technologies (AWS) • Experience using Apache Solr • Good Experience developing unit / integration test cases using Junit /TestNg. • Experience in Integration, Component and End-to-End Testing • Knowledge of Behavior Driven Development (BDD) for automated acceptance tests • Good ability to understand and work with code developed by other developers. • Very comfortable to work independently with minimal supervision Why me? -------------------------------------------------------------------------------------------- -Provide High Quality Services -Delivers Bug Free Code -Good Listener and Great Communication Skill. -Uses Latest technology for Development. Services I provide ---------------------------------------------------------------------------------------- *Software Development *Web application, Development & Maintenance *Creating Template and Reports *Finding Bug and Resolve. *Solve Programming Problems. I would be happy if employed by you and will work to the best of my ability.

𝐌𝐲 𝐫𝐞𝐜𝐞𝐧𝐭 𝐌𝐕𝐏 𝐞𝐚𝐫𝐧𝐞𝐝 𝐨𝐯𝐞𝐫 $𝟏𝐌 - 𝐭𝐡𝐞 𝐧𝐞𝐱𝐭 𝐨𝐧𝐞 𝐜𝐨𝐮𝐥𝐝 𝐛𝐞 𝐲𝐨𝐮𝐫𝐬. 🚀 I offer a 𝐅𝐫𝐞𝐞 𝐂𝐓𝐎 𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐂𝐚𝐥𝐥 for founders ready to scale smartly. For over 15 years, I’ve helped companies in 𝐟𝐢𝐧𝐭𝐞𝐜𝐡, 𝐥𝐨𝐠𝐢𝐬𝐭𝐢𝐜𝐬, 𝐫𝐞𝐚𝐥 𝐞𝐬𝐭𝐚𝐭𝐞, 𝐡𝐞𝐚𝐥𝐭𝐡𝐭𝐞𝐜𝐡, 𝐚𝐧𝐝 𝐒𝐚𝐚𝐒 transform rough ideas into structured, scalable products - guiding teams from whiteboard sketches to working platforms. 👉 My focus: turning ambitious concepts into products that work flawlessly across web, mobile, and intelligent automation layers. I’ve helped startups and established companies design everything from AI-powered dashboards to crypto trading infrastructure, combining scalable web apps, mobile tools, and AI/ML assistants into a single architecture. My Expertise 𝐖𝐞𝐛 & 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: JavaScript, TypeScript, Python, Java, C#, React, Angular, Vue, Flutter, React Native, Next.js 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Solidity, Rust, Clarity, Web3.js, crypto payments, trading bots 𝐀𝐈 & 𝐌𝐋 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: Python, OpenAI, n8n, RAG agents, chatbots, AI translation 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐢𝐧𝐠: Solution Architecture, Fractional CTO, process setup, team scaling 🏆 Featured Work • Designed a blockchain trading core integrating fiat and crypto transactions with live market feeds. • Built an AI operations platform that automated decision workflows for a SaaS analytics company. My clients stay with me on average for 𝟐 𝐲𝐞𝐚𝐫𝐬, because I create products that last. 𝐖𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡: WeWay, Bitsgap, VX technologies, Red Jumpers Agency, VARO energy, AMC Networks, Hutte, Elit-Web, Digiteum. If you need a partner who can understand both business and architecture, let’s start mapping your roadmap. 𝐌𝐞𝐬𝐬𝐚𝐠𝐞 𝐦𝐞 - 𝐥𝐞𝐭’𝐬 𝐦𝐚𝐤𝐞 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐭𝐡𝐞 𝐧𝐞𝐱𝐭 𝐛𝐢𝐠 𝐬𝐮𝐜𝐜𝐞𝐬𝐬. I don’t sell dreams - I scope reality.