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🏆 Top 3% Freelancer | Upwork Top Rated Plus 🌟 5-Star Reviews | 100% Job Success 💼 6+ Years of Experience | 2000+ Hours Worked I am a senior full-stack web developer with a track record of delivering large-scale high-performance products and have professional experience in various technologies of frontend and backend development. Listed below are my experience and skills: ✅ Frontend: NextJs, ReactJs, Angular, Vanilla JavaScript, Ajax, HTML5, Material UI, TailwindCSS, Ant Design. ✅ Backend: NestJs, NodeJS, ExpressJS, Python, Django, Flask, RESTful API ✅ Database: MongoDB, PostgreSQL, DynamoDB, MySQL. ✅ Clouds: AWS, Azure Thanks a lot for visiting my profile, You are invited to watch my portfolios. Please see this at a glance. Enjoy your moments have a good time. 🙂

✅ 4000+ hours on Upwork ✅ 100% Client Satisfaction ✅ Top Rated Plus Professional I'm here to be your reliable partner, someone who comprehends the complexities of your business and delivers accordingly. Whether you're evolving your idea into a remarkable product, facing challenges with scaling up, or in need of marketing and business automation, I've got your back. I'm a seasoned Full Stack Senior Engineer with 7 years of industry experience, and I'm excited to bring my expertise to the Upwork platform. With a strong background in both mobile and web development. Solving complex problems and delivering innovative solutions tailored to your unique requirements is my forte. But wait! I'm not just about professional endeavors. I have personally crafted a comprehensive curriculum that introduces children to the exciting world of programming. Service types: ✅ Strategic Planning and Consultancy: Optimize your project outcomes by leveraging my strategic planning and consultancy services. If you have specific goals, detailed project specifications, and a limited budget, I can help you define your product concept and deliver solutions within your desired timeframe and budget. ✅Software Innovation Services: Elevate your software product with cutting-edge features and impactful app creation. From enhancing capabilities and staying ahead of the competition through new features development to crafting user-friendly and high-performance apps, I guide you through the entire process. Transform ideas into reality and make a lasting impression in the dynamic world of software development. ✅Software Maintenance and Support: Enhance the performance of your software product and foster customer loyalty with my assistance. I provide comprehensive software maintenance and support services to ensure your product functions optimally. By addressing issues promptly and offering reliable assistance, I help you improve customer satisfaction and retention. ✅ Major skills: - Frontend development (HTML, CSS, JS/TS, React.js, Vue.js) - Backend development (Node.js, Python, Firebase, MySql, MongoDb) - Mobile Development (React Native, Flutter) Whether you're a client looking for top-notch development services or a fellow freelancer seeking collaboration, I'm here to deliver exceptional results. Let's connect and discuss how we can bring your vision to life!

Most backend issues in production systems are not caused by technology - they come from early architecture decisions, fragile integrations, or systems that were never designed to scale. I help startups and product teams design and build reliable backend systems that hold up in production, not just prototypes that work in demos. Over the past 4+ years, I’ve worked on backend systems powering real products - designing APIs, data architectures, and event-driven systems using Node.js and Go. 𝙋𝙧𝙤𝙫𝙚𝙣 𝙩𝙧𝙖𝙘𝙠 𝙧𝙚𝙘𝙤𝙧𝙙 ・1200+ hours on Upwork delivering high-end development services ・100% Job Success Score (JSS) ・4+ Years in Software Engineering with a deep focus on Node.js & Go 𝙒𝙝𝙖𝙩 𝙄 𝙘𝙖𝙣 𝙝𝙚𝙡𝙥 𝙮𝙤𝙪 𝙗𝙪𝙞𝙡𝙙 Backend & API Development ・REST, GraphQL, and tRPC APIs ・Node.js frameworks: Express, Fastify, NestJS ・Clean API contracts and versioning ・Third-party API Database & Data Architecture ・PostgreSQL, MongoDB, ClickHouse ・Schema design and migrations ・Query optimization ・ORMs: TypeORM, Drizzle, Sequelize, Mongoose Event-Driven & Real-Time Systems ・Message queues with NATS and BullMQ ・Real-time communication via WebSockets or SocketIO ・Event-driven architectures for scalable services Data Acquisition & Automation ・API reverse engineering ・Web scraping systems ・Automation using Puppeteer and Playwright 𝙇𝙚𝙩’𝙨 𝙩𝙖𝙡𝙠 If you're building a system that needs to scale, remain maintainable, and survive production growth, I’d be happy to discuss your project. 𝘾𝙤𝙧𝙚 𝙏𝙚𝙘𝙝𝙣𝙤𝙡𝙤𝙜𝙞𝙚𝙨 Node.js • TypeScript • Go Express • Fastify • NestJS PostgreSQL • MongoDB • ClickHouse NATS • BullMQ • WebSockets • SocketIO TypeORM • Drizzle • Sequelize • Mongoose Puppeteer • Playwright

Hi, I am Nzhdeh🥇 Full Stack Web Developer with over 7 years of experience. During the previous three years, I have walked my way as a team lead managing the MEAN-stack based projects. 🏆 7+ years as a Full-Stack developer 🚀100+ succeeded projects ⏳5000+ hours worked via Upwork 🥇Top Rated Plus on Upwork 🚀Guarantee of high-quality work 🧑🏻‍💻About me: Being a Physicist and having a deep knowledge and skills in Physics gives me an advantage with web development as my background helps much with complex projects allowing me to create effective solutions based on your needs. My skill-set includes: 𝗣𝗥𝗢𝗚𝗥𝗔𝗠𝗠𝗜𝗡𝗚 𝗟𝗔𝗡𝗚𝗨𝗔𝗚𝗘𝗦: Typescript. 𝗙𝗥𝗢𝗡𝗧𝗘𝗡𝗗: ReactJS, NextJS, Angular, Vue.js 𝗕𝗔𝗖𝗞𝗘𝗡𝗗: Node.js, ExpressJS, Nest.js, Playwright, Puppeteer 𝗗𝗔𝗧𝗔𝗕𝗔𝗦𝗘𝗦: MongoDB, MySQL, PostgreSQL, Memcached, Redis 𝗖𝗟𝗢𝗨𝗗𝗦: AWS (SNS, SQS, Lambda, Amazon EventBridge, S3), DigitalOcean (Droplets, Functions, and Spaces Object Storage) , Cloudflare (R2 Object storage), DreamHost, Linode, Wasabi storage 𝐈 𝐚𝐦 𝐡𝐞𝐫𝐞 𝐭𝐨 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡: 🔹 Fully Customized Business Websites & Web Applications & Desktop Applications 🔹 Manage the end-to-end life cycle for the production of software and applications 🔹 Evaluate, enhance & improve products 🔹 Modify and test changes to previously developed programs 🔹 Automation & Data Mining Do you need a custom-built website for your business? Are you looking to save time and money by having a custom system built? Then look no further!🔥

🟢 𝗣𝗮𝗿𝘁 𝗼𝗳 𝘁𝗵𝗲 𝗧𝗼𝗽 𝟭% 𝗘𝘅𝗽𝗲𝗿𝘁-𝗩𝗲𝘁𝘁𝗲𝗱 Full-Stack Developers on Upwork 🚀 Specializing in 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 (𝟭𝟴+), 𝗝𝗮𝘃𝗮 (𝟭𝟳+), 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁, 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻, 𝗔𝗣𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, 𝗙𝗶𝗻𝘁𝗲𝗰𝗵, and Scalable Web Applications. With 𝟭𝟬+ 𝘆𝗲𝗮𝗿𝘀 delivering robust, maintainable, and scalable software solutions, I combine front-end expertise in Angular and back-end mastery with 𝗝𝗮𝘃𝗮 𝗮𝗻𝗱 𝗦𝗽𝗿𝗶𝗻𝗴 𝗕𝗼𝗼𝘁 𝘄𝗶𝘁𝗵 𝗔𝗜 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝘀𝗸𝗶𝗹𝗹𝘀 including 𝗚𝗣𝗧-𝟰, 𝗟𝗮𝗻𝗴𝗖𝗵𝗮𝗶𝗻, 𝗖𝘂𝗿𝘀𝗼𝗿 𝗔𝗜, 𝗣𝘆𝘁𝗵𝗼𝗻, 𝗮𝗻𝗱 𝗡𝗼𝗱𝗲.𝗷𝘀. I build powerful AI-driven automation, chatbots, and API workflows. 𝗪𝗵𝘆 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗺𝗲? ✅ 𝗗𝗲𝗲𝗽 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗶𝗻 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 & 𝗝𝗮𝘃𝗮 – clean, scalable code optimized for performance ✅ 𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝘀𝗸𝗶𝗹𝗹𝘀 – GPT-4, LangChain, Cursor AI, OpenAI API, Python, Node.js ✅ 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀 – AWS, Kubernetes, Docker, CI/CD pipelines ✅ 𝗧𝗲𝘀𝘁𝗶𝗻𝗴 & 𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗔𝘀𝘀𝘂𝗿𝗮𝗻𝗰𝗲 – unit & integration testing with Jest, JUnit, Selenium ✅ 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 & 𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 – Stripe, Braintree, PayPal, Sendinblue, plus fintech platforms ✅ 𝗧𝗿𝘂𝘀𝘁𝗲𝗱 𝗯𝘆 𝘀𝘁𝗮𝗿𝘁𝘂𝗽𝘀 & 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲𝘀 – 50+ projects delivered successfully ✅ 𝗙𝗮𝘀𝘁, 𝗰𝗹𝗲𝗮𝗿 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 & 𝗿𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆 𝘁𝗼 𝗸𝗲𝗲𝗽 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗼𝗻 𝘁𝗿𝗮𝗰𝗸 𝗖𝗿𝗲𝗱𝗲𝗻𝘁𝗶𝗮𝗹𝘀 & 𝗕𝗮𝗰𝗸𝗴𝗿𝗼𝘂𝗻𝗱 ⭐ Oracle Certified Java Professional ⭐ Neural Networks and Deep Learning (DeepLearning.AI) ⭐ Lecturer at Russian-Armenian University (RAU) ⭐ Computer Science graduate, American University of Armenia 𝗖𝗹𝗶𝗲𝗻𝘁 𝗣𝗿𝗮𝗶𝘀𝗲: "Oleg integrated GPT-4 APIs seamlessly, creating a chatbot that boosted our customer engagement by 40%." – AllAboutCustomers "Delivered LangChain automation ahead of schedule, saving us thousands in manual work." – BobbyTech 🚀 Ready to build your next AI or fintech solution with a trusted expert? Message me today and let’s create something amazing!

I'm a full stack web developer. I have more than 4 years of experience in developing complex web applications using Javascript and Typescript. I can help you with creating B2C and B2B projects from inhouse systems like CRMs and HRMs to creating teaching platforms and marketplaces. I am attentive to detail and love a good challenge. I also care about my work and write clean and testable code. If you have any questions about my work or experience, feel free to ask!