Backend-oriented Software Engineer with 8+ years of experience building SaaS products, API-driven platforms and data-intensive systems. Strong focus on Go backend development, REST APIs, cloud data pipelines and reliable production systems, backed by long-term experience with Laravel/PHP, SQL databases, Redis and modern JavaScript frameworks. CORE SKILLS - Backend: Go, Node.js/Express, Laravel/PHP, REST APIs, microservices, event-driven services, background jobs - Frontend: Vue 3, Vue 2, React, Pinia, Vuex, HTML5/CSS3, Tailwind/Bootstrap - Data & Messaging: PostgreSQL, MySQL, Redis, Google Cloud Datastore, BigQuery, Pub/Sub - Cloud & DevOps: Google Cloud Platform, App Engine, Cloud Storage, Secret Manager, Docker, CI/CD, Git - Engineering Practices: API design, data ingestion, performance optimization, refactoring, testing, code review

Hey! 👋 You'll partner with a Senior Full-Stack JavaScript Developer with 7+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 in crafting fast, scalable, and modern web applications and a proven record of delivering 30+ 𝐬𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬. You'll benefit from specialized expertise in React.js, Next.js, Node.js, and TypeScript, covering everything from frontend to backend to deliver systems that are clean, maintainable, and optimized for growth. You'll gain the advantage of deep technical skills paired with modern 𝐀𝐈 𝐭𝐨𝐨𝐥𝐬 𝐥𝐢𝐤𝐞 𝐂𝐮𝐫𝐬𝐨𝐫 𝐀𝐈 𝐚𝐧𝐝 𝐖𝐢𝐧𝐝𝐬𝐮𝐫𝐟 𝐀𝐈, 𝐬𝐩𝐞𝐞𝐝𝐢𝐧𝐠 𝐮𝐩 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐛𝐲 𝐮𝐩 𝐭𝐨 40%. As a vibecoder, you'll experience a focus on how things are built and how they feel, resulting in solutions that perform exceptionally, look stunning, and address your real product needs. ✅ What you will get ⚡ Fast and reliable delivery with clean, organized code that reduces 𝐝𝐞𝐛𝐮𝐠𝐠𝐢𝐧𝐠 𝐭𝐢𝐦𝐞 𝐛𝐲 𝐮𝐩 𝐭𝐨 40% 🏗️ Scalable architecture designed to handle 10k+ concurrent users with 𝐀𝐏𝐈 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐞 𝐭𝐢𝐦𝐞𝐬 𝐚𝐬 𝐥𝐨𝐰 𝐚𝐬 200𝐦𝐬 🔌 Seamless integrations with Stripe, Firebase, OpenAI, Claude AI, and more that process $100𝐤+ 𝐢𝐧 𝐭𝐫𝐚𝐧𝐬𝐚𝐜𝐭𝐢𝐨𝐧𝐬 securely 🔐 Secure and smooth authentication via JWT, OAuth2, SSO, and 2FA to protect 𝐭𝐡𝐨𝐮𝐬𝐚𝐧𝐝𝐬 𝐨𝐟 𝐮𝐬𝐞𝐫𝐬 and their data 🧪 Fully tested features using Jest, Cypress, and modern CI/CD workflows with 95%+ 𝐭𝐞𝐬𝐭 𝐜𝐨𝐯𝐞𝐫𝐚𝐠𝐞 for confidence in every release 💬 Clear and consistent communication that keeps you informed and aligned every step of the way 🤝 A long-term partner who takes ownership, ensuring your investment creates long-term value beyond just code 🧠 Tech Stack Expertise Frontend: JavaScript (ES6+), TypeScript, React.js, Next.js, React Native, Tailwind CSS, ShadCN, Material-UI, Zustand, Redux Backend: Node.js, NestJS, Express.js, Firebase, Supabase, PostgreSQL, MongoDB, Redis APIs and Integrations: REST, GraphQL, Stripe, PayPal, OpenAI, Claude AI, VercelAI SDK, OpenRouter, WebSocket, Google SSO, Auth0 DevOps and Deployment: AWS, Vercel, Heroku, Docker, Railway, GitHub Actions Testing: Jest, Cypress, Playwright, Vitest Productivity Tools: Cursor AI, Windsurf AI, Notion, Slack, GitHub 🚀 Let’s Build Something That Lasts Whether you're launching an 𝐌𝐕𝐏 𝐢𝐧 𝐮𝐧𝐝𝐞𝐫 6 𝐰𝐞𝐞𝐤𝐬, scaling your product to handle 𝐦𝐢𝐥𝐥𝐢𝐨𝐧𝐬 𝐨𝐟 𝐀𝐏𝐈 𝐫𝐞𝐪𝐮𝐞𝐬𝐭𝐬 per day, or seeking full ownership of your stack, you'll get the support you need. You'll receive code written with focus, purpose, and a deep understanding of what makes great digital products thrive. 📩 I’m available for consulting and long-term collaboration. Drop me a message or click the Invite button to discuss how I can support your success. 🔍 Keywords to Find Me Full Stack JavaScript Developer (7+ years, 30+ projects), React Developer, Next.js Expert, Node.js Engineer, TypeScript Developer, NestJS Developer, API Integration Expert, Firebase Developer, Supabase Developer, GraphQL Developer, Stripe Integration ($100k+ processed), PayPal Integration, OpenAI Developer, Claude AI Developer, OpenRouter Developer, VercelAI SDK, Tailwind CSS Developer, React Native Developer, AWS Developer, Docker Engineer, CI/CD Specialist (95%+ test coverage), Vercel Expert, Remote Full Stack Developer, MVP Developer (launched in under 6 weeks), SaaS Developer, Startup Developer, OAuth2 Authentication, JWT Security (thousands of users protected), WebSocket Integration (10k+ concurrent users, 200ms response time), Product-Focused Engineer, Modern Web App Developer, Cursor AI Developer, Windsurf AI Specialist, AI Integrations, AI Expert, AI Developer, Web Performance Expert (40% faster debugging, 200ms API responses), Senior JavaScript Engineer, Vibecoder

Hey! Here you can hire a full-stack developer with 3 years of experience in web development. I’m not just a coder - I’m your technical partner in building smart, fast, and scalable web solutions. 🚀 I started my journey as a freelancer here on Upwork, driven by curiosity and a passion for creating seamless digital experiences. From responsive UIs to rock-solid backends, I bring precision and purpose to every project. 🔝 ⚙️ Tech stack I work with 🔹 Frontend: ▫️ JavaScript TypeScript ▫️ React.js React Storybook ▫️ Redux.js Redux Toolkit Redux Thunk ▫️ Next.js ▫️ Material UI Ant Design ▫️ TailwindCSS styled-components SCSS Less Sass HTML5 CSS3 ▫️ charts.js ApexCharts Highcharts Recharts ECharts ▫️ WebSockets socket.io 🔹 Backend: ▪️ Node.js Nest.js Express.js ▪️ Firebase MongoDB PostgreSQL MySQL GraphQL ▪️ Pinecone DB Neo4j ▪️ Sequelize TypeORM ▪️ Strapi Stripe Twilio SendGrid ▪️ RabbitMQ socket.io WebSockets ▪️ Auth0 JWT 🔹 DevOps & Testing: ▪️ Docker ▪️ CI/CD GitHub Actions GitLab Bitbucket ▪️ Jest Mocha 🔹 Cloud & Infrastructure: ▪️ AWS EC2 Lambda API Gateway S3 RDS Cognito Elastic Beanstalk ▪️ Algolia ElasticSearch ✅ What you get when you hire me 👉 Production-ready code – clean, scalable, and maintainable code that’s easy for future devs to work with. 👉 Pixel-perfect UI implementation - designs come to life exactly as intended - responsive, accessible, and fast. 👉 Backend that scales – from APIs to microservices, I build systems that are ready for real-world traffic. 👉 Problem-solving mindset – I don’t just build features - I solve business problems with technology. 👉 Ownership & accountability – I treat your project like it's mine. You’ll never chase me down for updates. 👉 Clear communication – you’ll always know where things stand, what’s coming next, and what I need from you. 👉 Fast turnarounds – tight deadlines don’t scare me - I deliver quickly without compromising quality. 👉 End-to-end support – from architecture to launch (and beyond), I’ve got you covered. Need a reliable developer? Send me a message, and let’s start working on your project right away. 🔥

I've shipped production code for Five Guys' global website, enterprise healthcare platforms serving millions of users, and headless WordPress/Next.js corporate portals. If you need a senior developer who brings real agency discipline to freelance work - read on. I'm a Senior WordPress & Full-Stack Developer with 6+ years building for US and European agency clients from Yerevan, Armenia. My work spans traditional WordPress and fully headless architectures. I know when each approach is right and how to execute both to a high standard. ─── WHERE I SPECIALISE ─────────────────────────── → HEADLESS WORDPRESS + NEXT.JS WPGraphQL, typed GraphQL queries, ISR, dynamic routing, preview mode, and editor-friendly CMS workflows. Built fully decoupled corporate and investor portals from the ground up. → ALGOLIA INTEGRATION Custom plugin-level indexing, background sync, webhook triggers, faceted filters, geo-search, and admin UI. Delivered Algolia-powered search for one of the most visited QSR brand sites globally. → ENTERPRISE WORDPRESS Custom Gutenberg blocks, ACF Pro layouts, custom post types, REST endpoints, role-based access, multisite. Delivered themes for a publicly traded healthcare platform under strict WCAG 2.1 AA and enterprise performance requirements. → FIGMA → PIXEL-PERFECT FRONT-END React, TypeScript, Tailwind, SCSS. I close the gap between design intent and production reality - no approximations. → PERFORMANCE & CORE WEB VITALS Critical CSS, lazy loading, asset bundling. I lift Lighthouse scores into the 90s as a baseline, not a bonus. ─── MY STACK ───────────────────────────────────── PHP 8 · WordPress · Next.js · React · TypeScript · WPGraphQL · ACF Pro · Gutenberg · Algolia · REST API · SCSS · Tailwind · Pantheon · Lando · Git CI/CD · WP-CLI · Composer ─── HOW I WORK ─────────────────────────────────── I've operated inside US agency workflows - staged environments, strict release windows, collaboration with product, design, and QA teams. I bring that same discipline to every freelance engagement: clear scoping upfront, structured delivery, and full transparency throughout. WCAG 2.1 AA compliance is part of my standard process. Not an upsell. Not an add-on. Available for project-based work and ongoing retainers. Let's talk about what you're building.

I have been designing and building creative yet highly converting websites and eCommerce Webshops for startups, small and medium businesses, organizations, and brands for 9 years now. I always make sure to deliver a site that tells a story, delivers a friendly experience and generates leads for the business. If it is about designing a new website, a couple of additional pages on the current site, or redesigning your existing site for a better experience and more leads, I would be glad to assist at every stage of your business. Communication is key to the success of a project. I make sure to post an update on project progress daily while getting on the calls fortnightly. 𝗛𝗲𝗿𝗲 𝗶𝘀 𝗵𝗼𝘄 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂: 🔸Build a new site for your business and write the web copy that converts. 🔸Revamp your existing site for better conversion, experience and a new look and feel. This includes writing the web copy again for the right messaging as well. 🔸Design additional pages for your current site adhering to the existing brand guidelines. 🔸Reviewing your website statistics to suggest improvements to improve customer retention. 🔸Building and migrating your websites to WebFlow, Wix, WordPress, Woo-Commerce and Shopify 🔸WordPress website setup using page builder tools – ACF editor, Elementor and Divi. 𝗔𝗿𝗲𝗮𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: ❇️ UX research and competition analysis ❇️ UI/UX design for your digital product (both web and mobile) ❇️ Responsive business website design ❇️ Lead generation landing page design for your products and services ❇️ SaaS website design ❇️ Web application design ❇️ Admin panel design that includes data visualization ❇️ Interactive prototyping ❇️ WebFlow, WordPress and eCommerce development, SEO and performance optimization 𝗧𝗼𝗼𝗹𝘀 𝗜 𝘂𝘀𝗲 𝗳𝗼𝗿 𝗲𝘃𝗲𝗿𝘆 𝗽𝗿𝗼𝗷𝗲𝗰𝘁: ✔ Figma to design and prototype ✔ WebFlow, WordPress, Woo-Commerce and Shopify to build the sites ✔ Email, Upwork or Slack for communication ✔ Trello and Asana for project management Just send me a message, and let's create your future website together!

Hi, I’m Salek Masud Parvez, a React & Next.js developer who helps startups, students, and small businesses turn ideas into fast, scalable, and user-friendly web applications. I specialize in building high-performance web apps with clean, responsive UI and robust backends using Next.js, React, Node.js, MongoDB, and PostgreSQL. From secure payments to API integrations, I deliver solutions that save time and engage users effectively.

Expert Programmer and software Architect with experience in a variety of technologies. Specialized in JavaScript. Enjoys using agile methodologies. My main technical skills: ▪️ JavaScript/TypeScript ▪️ HTML/CSS ▪️ ReactJS/Next/Gatsby/SSR ▪️ Vue3/Nuxt ▪️ Tailwind/CSS/SCSS ▪️ Magento/Shopware ▪️ React Native My main soft skills: ▪️ Teamwork ▪️ Open-mindedness ▪️ Communication

Are 𝙗𝙖𝙘𝙠𝙚𝙣𝙙 bottlenecks, slow 𝘼𝙋𝙄𝙨, or unstable cloud deployments holding your product back? As a 𝐓𝐨𝐩 𝐏𝐲𝐭𝐡𝐨𝐧 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐢𝐭𝐡 𝟏𝟏+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 building scalable 𝘼𝙋𝙄𝙨 and 𝙗𝙖𝙘𝙠𝙚𝙣𝙙 𝙨𝙮𝙨𝙩𝙚𝙢𝙨 using 𝙁𝙖𝙨𝙩𝘼𝙋𝙄, 𝘿𝙟𝙖𝙣𝙜𝙤 𝙖𝙣𝙙 𝘼𝙒𝙎. I help startups and SaaS companies build reliable, high-performance backend architectures. I build high-performance Python backend systems (Django, FastAPI, Flask) and cloud-ready architectures that scale reliably and perform under real user load from prototype to production-ready. ⚙️ What I Focus On ✔ Performance & Scalability—Clean, high-performance APIs built for long-term growth ✔ Cloud-Native Deployments—AWS, Docker, CI/CD pipelines, observability & monitoring ✔ Automation & AI/LLM Integrations—Workflow automation and intelligent features where they add real value ✔ Security & Maintainability—Authentication (OAuth2/JWT), RBAC, and clear documentation 🚀 What I Deliver ✔ Scalable REST and GraphQL APIs and backend services built with Python, Django/DRF, FastAPI ✔ Cloud deployments on AWS with dockerized CI/CD pipelines and monitoring ✔ Async & distributed processing (Celery, Redis, RabbitMQ) for performance and throughput ✔ Backend refactoring & modernization for stability, maintainability, and performance ✔ AI/LLM automation and intelligent workflows integrated into backend systems ✔ Secure architecture (OAuth2, JWT, RBAC) and maintainable code with documentation 🧩 Core Expertise ✔ Python backend (Django/DRF, FastAPI, Flask) ✔ Cloud & DevOps (AWS EC2, S3, GCP, GCS, RDS, CloudFront, Docker, Kubernetes) ✔ Databases (PostgreSQL, MySQL, MongoDB, Redis, Supabase) ✔ Asynchronous job processing and microservices ✔ AI/LLM workflow integration, automation, ETL pipelines If you’re looking for a dependable senior backend engineer who can solve real production problems and challenges and build systems that scale with your business, let’s connect! I’d love to discuss your project!

✅ Available 30+ hrs/week 👋 Hi! I’m a highly skilled Full Stack Web Developer with over 4 years of hands-on experience crafting fast, scalable, and engaging web applications. 👨‍💻 I'm all about top-notch code quality. 🤝 I craft solutions with the next person in mind for smooth handover. ✨ Simplicity and elegance are my go-to for easy maintenance. 🌟 Transparency is my thing at every step of our collaboration. 🔒 Your ideas and secrets? Locked tight with me—total confidentiality guaranteed! 🔧 What I’m Great At: Frontend Development: React.js, Next.js, Vue.js Backend & APIs: Node.js, Express, MongoDB Search & Indexing: Algolia, ElasticSearch Styling & UI: Tailwind, MUI, Elastic UI State Management: Redux, Recoil, React Context, pinia Server-Side Rendering (SSR): Next.js, Express CI/CD & DevOps: Git, GitHub Actions, Vercel, 💡 Why Work With Me? ✓ I build visually stunning, high-performance, and business-ready web platforms ✓ My code is clean, modular, and adheres to industry best practices ✓ I’m experienced in implementing powerful search experiences using Algolia and ElasticSearch ✓ Security is a top priority—your application stays safe from common threats ✓ I provide quick fixes and reliable maintenance, minimizing downtime ✓ I thrive in team environments and help push projects over the finish line smoothly 🚀 Results You Can Expect: A responsive, secure, and scalable web app that not only looks great but is also robust, intuitive, and delivers value to your users—24/7. 💯 100% Job Success Score

Full Stack Web Designer & Developer | E-Commerce & CMS Expert | Custom Solutions Architect I'm a results-driven web developer with 8+ years of hands-on experience transforming digital visions into high-performing websites. My expertise spans the full development lifecycle, from concept to deployment, with a focus on creating scalable solutions that drive business growth. Why Clients Choose Me: CMS Powerhouse: Mastered 12+ platforms including WordPress, Shopify, BigCommerce, and Webflow to deliver pixel-perfect, responsive designs E-Commerce Specialist: Built 50+ online stores with WooCommerce, Shopify, and Magento, integrating advanced features like Algolia Search API for enhanced user experiences Problem Solver: Fixed complex issues from server migrations to plugin conflicts, ensuring 99.9% uptime for clients Custom Development: Created 30+ custom themes/plugins and developed 15+ Shopify custom apps tailored to unique business needs My Superpowers: 🔧 Platform Mastery: WordPress (Custom Themes, WooCommerce, Plugin Development) Shopify (Custom Apps, Theme Development) BigCommerce & Magento (E-Commerce Solutions) Webflow, Duda, Squarespace (No-code/Pro-code) ⚡ Technical Expertise: PHP/CodeIgniter Core Development Frontend Optimization (HTML/CSS/JS) Hosting Migration & Server Management API Integrations (Algolia, Shopify APIs) What Sets Me Apart: 5-star rated for delivering projects 20% faster than industry average 95% client retention rate through transparent communication and proactive updates Specialized in turning complex requirements into intuitive, user-friendly interfaces Let's discuss your project! Whether you need a complete website overhaul or want to unlock new features in your existing platform, I'm here to help you achieve your digital goals. Ready to bring your vision to life? Let's connect!