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✅ 3600+ Development Hours ✅ 50+ Successful Projects ✅ 7+ Years of Professional Experience ✅ Specialist in Scalable SaaS, APIs & Integrations ✅ Proven Track Record in Building Business-Ready Applications I’m a Full Stack Web Developer with 7+ years of experience designing, developing, and scaling modern web applications, from SaaS platforms and CRMs to marketplaces and automation tools. I help startups and growing businesses turn ideas into production-ready products through clean code, clear communication, and a focus on business outcomes. 💻 Expertise Backend Development: Scalable RESTful APIs and microservices using Ruby on Rails and Node.js. Frontend Development: Responsive and dynamic UIs with ReactJS, VueJS, AngularJS, JavaScript (ES6), HTML5, CSS3, Tailwind, and Bootstrap. Database Management: Expert in PostgreSQL, MySQL, Redis, MongoDB, and Firebase for secure, high-performance data storage. DevOps & Cloud: Hands-on with AWS, Docker, and Heroku, ensuring smooth deployments, CI/CD pipelines, and scalable architectures. Integrations & Automation: Seamless integrations with Stripe, PayPal, Paystack, and third-party APIs (CRM, chat, analytics, etc.). Quality & Collaboration: Practicing TDD, Agile workflows, and version control via GitHub, GitLab, and Jira for reliable, high-quality delivery. Let’s collaborate to build something exceptional, whether it’s a SaaS platform, custom dashboard, or API-powered business application. I’m open to both short-term and long-term engagements. Keywords: Full-Stack Development | Web App Development | API Development | Ruby on Rails | React.js | Vue.js | Node.js | Angular.js | AWS | Heroku | Docker | PostgreSQL | MySQL | MongoDB | Firebase | RESTful APIs | SaaS | Business Automation | Marketplace Development | Stripe | PayPal | Integrations | Frontend | Backend | TDD | Scalable Apps | Cloud Deployment | Agile | Performance Optimization

🏆 7+ Years Full-Stack Development Experience ✅ Expert in Ruby on Rails & Python Django ✅ AI Integration & Intelligent Automation Specialist ✅ Scalable SaaS & Web App Development ✅ REST & GraphQL API Development & Integrations ✅ Modern Frontend with React, Next.js & Tailwind 📈 Proven Results: Scalable Apps, Faster Performance & Real Business Impact Facing delays or roadblocks in building your 𝗳𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸 𝗦𝗮𝗮𝗦 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝗼𝗿 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝘄𝗲𝗯 𝗮𝗽𝗽? You’re not alone, and I’m here to help you fix that. I'm 𝐌𝐮𝐪𝐚𝐝𝐚𝐬, 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with 7+ 𝘆𝗲𝗮𝗿𝘀 of hands-on experience building scalable, production-grade software. I specialize in𝐑𝐮𝐛𝐲 𝐨𝐧 𝐑𝐚𝐢𝐥𝐬 𝐚𝐧𝐝 𝐏𝐲𝐭𝐡𝐨𝐧 𝐃𝐣𝐚𝐧𝐠𝐨 𝐛𝐚𝐜𝐤𝐞𝐧𝐝𝐬, 𝐦𝐨𝐝𝐞𝐫𝐧 𝐟𝐫𝐨𝐧𝐭𝐞𝐧𝐝𝐬 𝐛𝐮𝐢𝐥𝐭 𝐰𝐢𝐭𝐡 𝐑𝐞𝐚𝐜𝐭, 𝐍𝐞𝐱𝐭.𝐣𝐬, 𝐍𝐨𝐂𝐨𝐝𝐞 development and integrating cutting-edge AI solutions that deliver real-world results. Whether you're a startup looking to launch your MVP fast or a product team needing high-quality engineering to scale, I can plug in quickly and help you deliver. ____________________________________________________________________________ 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 𝗜 𝗣𝗥𝗢𝗩𝗜𝗗𝗘 𝐂𝐮𝐬𝐭𝐨𝐦 𝐑𝐮𝐛𝐲 𝐨𝐧 𝐑𝐚𝐢𝐥𝐬, 𝗣𝘆𝘁𝗵𝗼𝗻 𝗗𝗷𝗮𝗻𝗴𝗼 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Tailored, high-performance web applications built to scale and meet your unique business needs. 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 Enhance your apps with AI-driven features like predictive analytics and smart automation. Real-world integration of AI APIs like OpenAI, Stability.ai, Leonardo, Lumalabs, and more, for features like content generation, image processing, or intelligent user flows. 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝘄𝗶𝘁𝗵 𝗥𝗲𝗮𝗰𝘁 & 𝗧𝘂𝗿𝗯𝗼 Modern UIs using ReactJS, Tailwind CSS, Bootstrap, and Turbo/Stimulus to deliver a seamless, reactive user experience. 𝐀𝐏𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 Secure and efficient RESTful or GraphQL APIs for connecting services, mobile apps, third-party tools, or internal dashboards. 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗚𝗮𝘁𝗲𝗪𝗮𝘆 Secure and efficient payment gateway like stripe and paypal to manage subscription 𝐂𝐥𝐨𝐮𝐝 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 & 𝐃𝐞𝐯𝐎𝐩𝐬 Reliable CI/CD pipelines and cloud hosting on AWS, Azure, GCP, DigitalOcean, or Heroku for smooth, scalable deployments. 𝗧𝗲𝘀𝘁-𝗗𝗿𝗶𝘃𝗲𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 & 𝗤𝗔 Confidently ship code using tools like RSpec, Capybara, Cucumber, and FactoryBot to ensure everything runs smoothly. ____________________________________________________________________________ 🚀 𝗥𝗘𝗔𝗗𝗬 𝗧𝗢 𝗕𝗨𝗜𝗟𝗗 𝗦𝗢𝗠𝗘𝗧𝗛𝗜𝗡𝗚 𝗚𝗥𝗘𝗔𝗧? Let’s bring your product idea to life, or take your current app to the next level. Message me now for a quick consultation. I typically respond within a few hours. 🛠️ 𝐓𝐎𝐎𝐋𝐒 & 𝐓𝐄𝐂𝐇𝐍𝐎𝐋𝐎𝐆𝐘 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬 & 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬 • Ruby • Ruby on Rails • Python • JavaScript • TypeScript • React.js • Next.js • NodeJS • V0.app • Loveable.dev • Famous.ai • Webflow 𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 • AI Integration • AI App Development • AI Agent Development • Predictive Analytics • Zapier • Pipedream 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 • PostgreSQL • MySQL • MongoDB • Supabase • Airtable 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 & 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐀𝐬𝐬𝐮𝐫𝐚𝐧𝐜𝐞 • RSpec • Factory • Minitest • Selenium • Capybara 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐂𝐥𝐨𝐮𝐝 • Docker • CI/CD • AWS • Heroku • GCP 𝐔𝐈 & 𝐒𝐭𝐲𝐥𝐢𝐧𝐠 • Tailwind CSS • Bootstrap Ruby on Rails, Python Django, Full Stack Development, AI Integration, React.js, Web Development, TypeScript, JavaScript, API Development, PostgreSQL, Supabase, Airtable,Stripe Tailwind CSS.

Are you looking for a battle-tested Senior Full-Stack Developer to architect modern, scalable, and high-performance applications? With a proven track record spanning over 8 years of professional engineering, I specialize in building production-grade software from scratch, rescuing legacy codebases, and integrating cutting-edge AI capabilities. From Y Combinator-backed startups to enterprise-level ERP providers across the US, UK, and Germany, I don't just write code—I design future-proof, self-healing architectures that solve complex business challenges in Fintech, Logistics, E-Commerce, and HealthTech. 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 → Languages: Ruby · JavaScript / TypeScript · Python → Backend: Ruby on Rails · Node.js (Express.js, NestJS) · Sidekiq · Kafka · RabbitMQ · BullMQ · WebSockets → Frontend: React.js · Next.js · Vue.js · Angular · Redux · Tailwind CSS · Material UI → APIs & Integrations: RESTful APIs · GraphQL · Third-Party Integrations → Databases & Search: PostgreSQL · MySQL · MongoDB · Redis · Elasticsearch · DynamoDB · Firebase → Cloud & DevOps: AWS (EC2, S3, RDS, Lambda, EventBridge) · Docker · GitHub Actions · CI/CD · Heroku · DigitalOcean · 𝗪𝗵𝗮𝘁 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗪𝗶𝘁𝗵 𝗠𝗲 𝗔𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗟𝗼𝗼𝗸𝘀 𝗟𝗶𝗸𝗲 → Built to Scale: I design architectures that seamlessly handle a 5x surge in traffic and data load, ensuring your software grows alongside your business without requiring costly code changes. → End-to-End Ownership: From complex database modeling to high-fidelity frontend execution, I manage the full lifecycle, eliminating the need to coordinate multiple specialists. → Agile Communication: I maintain a proactive, transparent feedback loop, giving you complete visibility into milestones, blockers, and code deployment. → On-Time, On-Budget Handoffs: My development process is optimized for efficiency, ensuring predictable delivery timelines and highly customized product features. → Pragmatic, Data-Driven Thinking: I look at your product through a commercial lens, ensuring every architectural decision supports your user retention and business goals. → Zero Technical Debt: Through strict code reviews, modular engineering patterns, and comprehensive unit testing, I deliver a clean codebase that your team can easily scale. Let’s connect to build an agile, transparent partnership focused on clean code, predictable delivery, and long-term product success.

I am Ruby on Rails developer oriented to write pure and nice back-end code (i have over 9 years of experience). I like refactor existing code and writing tests. (I have experience with Capybara, RSpec) Also I have front-end skills in ReactJS, ReactNative, Javascript, JQuery, HTML, HAML, Twitter Bootstrap and CSS. In front-end offcourse my favourite part is programming in js.

I am a skilled Salesforce Architect and Top Rated Freelancer on Upwork with extensive technical exposure and a proven track record in developing and implementing innovative solutions. With expertise in Salesforce, Lightning Components, Apex, and various integration frameworks, I have successfully delivered projects across a wide range of industries. I am highly proficient in Java, J2EE, and other web technologies, enabling seamless integration between Salesforce and external systems. My strong problem-solving skills and attention to detail make me a valuable asset in driving business success. Technical Skills • Salesforce: Lightning Components, Lightning Flows, Apex Class, Triggers, Custom Settings, Custom Labels • Integration: Stripe, Xero, QuickBooks, DocuSign, Adobe Sign, PandaDoc, SAP, Formstack, Hubspot, ChatGPT, MailChimp, WhatsApp, Box.com, Google Drive, Twilio, Shopify,, Answer Hub, WooCommerce , Heroku, Amazon CTI, MuleSoft, Five9, ChatGPT, Zoho CRM. • Web Technologies: Java, J2EE, Servlet, JSP, JSF, Spring, Hibernate, REST, SOAP • Front-end: HTML, CSS, JavaScript, jQuery, AngularJS, Bootstrap, Lightning Design System (LDS) • Cloud Platforms: Heroku, AWS • Database: PL/SQL, SOQL, SOSL Recent Projects • Automation of Accounting for E7evate with Salesforce, Stripe, and QuickBooks integration. • Custom Search functionality using Alogia search and fetching data from Salesforce and WordPress using Node.js. • Storing attachments from Salesforce to OneDrive, Box, Google Drive, and Dropbox. • Extracting data from image files using Einstein OCR. • Twilio integration with Salesforce for SMS conversations. • WhatsApp integration with Salesforce for messages using Digital Engagement. • Setting up Sales Process, lead conversion, Web to lead, and LEX conversion for Pimlico Capitals. I am confident that my comprehensive skill set and experience make me the ideal candidate for Salesforce Architect roles. Please feel free to reach out to discuss how I can contribute to your projects and drive success.

🚀 SaaS & Backend Engineer | Node.js • NestJS • Ruby on Rails • React • Next.js • TypeScript | AI Integrations • RAG Systems • Microservices • Cloud Architecture I help startups and businesses build scalable SaaS platforms, backend systems, and AI-powered applications using modern software engineering practices. My focus is on developing production-ready systems with strong architecture, clean APIs, high performance, and long-term maintainability. I work across the full backend lifecycle from designing REST APIs, GraphQL APIs, and microservices architecture to optimizing databases, fixing production issues, and improving existing codebases. I also specialize in working with AI-generated codebases and modern AI-assisted development workflows, ensuring they are stable, maintainable, and production-ready. 🔧 What I Can Help You Build ✅ SaaS Backend Development: Node.js, NestJS, Ruby on Rails, Express.js, REST APIs, GraphQL APIs, authentication (JWT, OAuth), RBAC systems, multi-tenant SaaS architecture, subscription systems, billing systems ✅ AI-Powered Applications: OpenAI API, Claude API, Gemini API, AI agents, RAG pipelines, vector databases, embeddings, LLM-powered applications, prompt workflows, AI automation systems, intelligent backend logic ✅ Existing Project Improvement: debugging, refactoring, code optimization, legacy system modernization, performance tuning, scalability improvements, production bug fixing, architecture cleanup ✅ Scalable Web Applications: React.js, Next.js, TypeScript, JavaScript, SSR/SPA architecture, frontend-backend integration, state management, API integration ✅ API Development & Integrations: third-party APIs, payment gateways (Stripe, PayPal), CRM integrations, SaaS integrations, webhook systems, automation pipelines ✅ Real-Time & Distributed Systems: WebSockets, event-driven architecture, message queues (RabbitMQ, Kafka concepts), background jobs, cron systems, async processing, pub/sub systems ✅ Cloud & DevOps: AWS, Docker, CI/CD pipelines, containerization, deployment automation, cloud infrastructure, monitoring, logging, performance optimization 🧠 Core Skills • Backend: Node.js, NestJS, Express.js, Ruby on Rails, Microservices, Modular Monoliths • Frontend: React, Next.js, TypeScript, JavaScript, Redux, Zustand • Databases: PostgreSQL, MySQL, MongoDB, Redis, database design, query optimization • AI Engineering: OpenAI, Claude, Gemini, RAG systems, vector databases, embeddings, AI agents, MCP concepts • Architecture: SaaS architecture, system design, scalable backend architecture • DevOps: AWS, Docker, CI/CD, Nginx, deployment pipelines 🚀 What Sets Me Apart 💼 Strong focus on SaaS architecture, backend scalability, and production-grade system design ⚙️ Experience working with complex codebases including AI-generated applications and rapid MVP systems 🤖 Ability to integrate AI features, LLM APIs, and automation workflows into real-world SaaS products 📊 Performance-focused engineering: caching, indexing, optimization, and low-latency backend design 🔧 Comfortable with debugging, refactoring, and improving existing production systems at scale 📩 If you're looking for a backend engineer who can build scalable SaaS platforms, integrate AI features, improve system performance, and work with modern AI-assisted development tools, feel free to reach out. I can help design, build, and improve your product with a focus on scalability, reliability, and clean architecture. Thanks, Hunzla