Hire the Best Amazon API Gateway Developers

Greetings! Lex here, an AWS Architect. Let me ask you: did you have it all on Upwork? Contractors who go offline for days without notice? Contractors ruined your production environments? Contractors knowing what you need better than you? Contractors who don't have a clue about a single thing written on their profiles? This is how I am different. ⭐️ I am always on for you. My response SLA is minutes. Not hours. Not days. ⭐️ My consulting style is gentle and non-invasive. You always have the final say. ⭐️ I am a narrow specialist: AWS is the only thing I sell here, but be certain that I am the best in my league. This is some of thing I do best: ✅ Web and mobile cloud-native microservice and serverless architectures (AWS) ✅ Cloud solutions cost reduction ✅ External API providers and COTS systems integration using Apache Camel and n8n ✅ Data pipelines, ETLs, ELTs ✅ Bespoke technology assessments ✅ Fully autonomous AI agents My Technology Background ✅ Industry-standard enterprise Java stack: Spring Boot, Hibernate, Apache Camel ✅ Experience with Apache Kafka, ElasticSearch, Redis ✅ Exposure to front-end stack and paradigms: Angular, React, micro-frontends, SPAs ✅ Data stores: PostgreSQL, MySQL, MongoDB ✅ Cloud providers: Amazon Web Services ✅ Standards and protocols: OpenAPI, REST, Json RPC, GraphQL, Mambu, n8n

👋 Hello! I’m a 𝗧𝗼𝗽-𝗥𝗮𝘁𝗲𝗱❟ 𝗔𝗪𝗦 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗔𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 with 5+ years of production experience helping startups, SaaS founders, and growing businesses design, build, and scale intelligent, high-performance applications. I specialize in 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 𝘄𝗶𝘁𝗵 𝗣𝘆𝘁𝗵𝗼𝗻, high-concurrency backends in 𝗚𝗼𝗟𝗮𝗻𝗴, full-stack 𝗠𝗘𝗥𝗡 (React/Next.js + Node + MongoDB) development, and end-to-end 𝗔𝗪𝗦 𝗗𝗲𝘃𝗢𝗽𝘀 delivering secure, scalable systems that drive real growth and efficiency. Whether you need an AI-enhanced MVP, complex SaaS platform, web/mobile app, or cloud modernization, I focus on clean architecture, performance, and long-term maintainability so your product scales without technical debt. ✅ 𝗪𝗵𝗮𝘁 𝗜 𝗗𝗲𝗹𝗶𝘃𝗲𝗿: 𝗔𝗜 & 𝗣𝘆𝘁𝗵𝗼𝗻 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 • Intelligent features using Python (FastAPI/Django), LLMs, automation, and data pipelines • AI chatbots, predictive analytics, workflow automation, and custom ML integrations 𝗚𝗼𝗟𝗮𝗻𝗴 & 𝗛𝗶𝗴𝗵-𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 • Scalable microservices, APIs, and real-time systems built for speed and concurrency 𝗠𝗘𝗥𝗡 𝗦𝘁𝗮𝗰𝗸 & 𝗠𝗼𝗱𝗲𝗿𝗻 𝗪𝗲𝗯/𝗠𝗼𝗯𝗶𝗹𝗲 • React, Next.js, Node.js, MongoDB for responsive, SEO-optimized web apps • React Native mobile applications (web + iOS/Android) • Dashboards, admin panels, and customer portals 𝗔𝗪𝗦 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗖𝗹𝗼𝘂𝗱 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 • Full AWS architecture (Lambda, ECS/EKS, RDS, S3, API Gateway, CloudFront) • Docker, Kubernetes, Terraform, CI/CD pipelines (GitHub Actions) • Monitoring, logging, and auto-scaling for production reliability 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 & 𝗠𝗼𝗿𝗲 • PostgreSQL, MongoDB, Redis, Elasticsearch • Secure authentication, real-time features, and background processing 🧠 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 & 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗧𝘆𝗽𝗲𝘀 𝗜’𝘃𝗲 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝗲𝗱: SaaS platforms (B2B/B2C), FinTech, HealthTech, EdTech, E-commerce, Logistics, and internal tools. I’ve successfully built and scaled web + mobile apps, modernized legacy systems, and migrated to AWS for cost and performance gains. For larger or multi-discipline projects, I lead a small team of vetted specialists (designers, additional devs, QA) while maintaining single-point accountability and seamless delivery. ⭐ 𝗪𝗵𝘆 𝗧𝗼𝗽 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 • AWS Certified + consistent Top-Rated status on Upwork • Deep expertise in AI + Python, GoLang, MERN, and DevOps. The exact stack modern businesses need in 2026 • Business-first mindset: I prevent costly mistakes and build systems that grow with you • Clear, proactive communication and full ownership from MVP to production • Reliable post-launch support and iteration I don’t just write code, I partner to deliver AI-enhanced, production-ready solutions that give you a competitive edge. 📞 Ready to build? Share your requirements and I’ll review them and suggest the optimal technical approach (no pressure, no fluff). Let’s turn your idea into a scalable reality.

I have 15+ years of experience architecting cloud solutions on AWS, building AI Agents and developing full-stack web applications, and distributed systems. ⭐⭐⭐⭐⭐ "Rehan is amazing and is certainly an expert in his field. If you need someone who is systemic and has a great eye for detail." Here's what you can expect from working with me: 🔹Consultative mindset geared towards helping client navigate complexity 🔹Clear communication ensuring seamless collaboration 🔹Efficient work ethic that focuses on automation and repeatability 🔹Pride in quality of the work that I deliver Key Highlighs: ✅ Established AWS cloud practice in a mid-sized IT MNC listed on NYSE & BSE/NSE ✅ Led a team of 700+ AWS Architect, Developers, DevOps, and SysOps experts. ✅ Delivered more than 300 projects in career ✅ AWS Certified Solutions Architect ✅ Published Author with books on Systems Design, and Web API development ✅ Regularly provide certification training at corporate level for AWS ✅ Over 200 ⭐ on GitHub repositories What can I help you with: ☁️ Application design and architecture: - Design scalable, resilient, and reliable systems architecture - Optimial bespoke solutions customised to your needs - Secure Network design ☁️ Cloud Infrastructure & DevOps - Secure network configuration (VPC, subnets, gateways, etc.) - Optimal EC2 server configuration - Database setup (RDBMS or NoSQL) - Load balancing, autoscaling, and more 💻 SaaS applications: - End to end SaaS deployment using AWS Services - Miroservices API & Compute using serverless stack using Lambda, Fargate, API Gateway - Or server-based solutions using EC2, Load Balancer - Authentication using Cognito - DNS and domain name configuration through Route53 - SSL configuration - Database using RDS / DynamoDB with appropriate data modelling / single table design - Combine services using SQS, SNS, Step Functions, etc. - Observability using CloudWatch 🖥️ Backend serverless apps - Lambda / API Gateway - ECS Fargate based container services 🤖 Bots and AI Agents - Agentic Bots in MS Teams, Web, Slack, etc. - Experience in OpenAI APIs - Local deployment of DeepSeek, Llama, Qwen, etc. My key expertise designing resilient systems using optimal building block. I have open source repositories on GitHub where I regularly publish extremely niche apps. Proficient in React, Astro, NextJS, NestJS, AWS, AWS Lambda, AWS EC2, S3, etc. I can provide links to code samples and apps that I have made Open Source on request.

I'm an ex-Google engineer who builds the automation behind e-commerce operations, the Amazon and Shopify systems that keep inventory and orders in sync without anyone copying data by hand all day. My biggest Upwork project is one I still run today: an Amazon SP-API system across 50+ brand trackers that has held a single long-term contract for years. Before Upwork I spent five years as a backend tech lead at Google, then ran engineering as a Director and later as a CTO. At Google I built BigQuery analytics dashboards that took report generation from over two hours down to three minutes, and that's the same kind of problem I solve now for sellers and agencies: the reports nobody has time to pull, inventory that quietly drifts across channels, and orders that have to move between Amazon, Shopify, a CRM, and a pile of spreadsheets on their own. You're hiring a senior engineer who has owned production systems at real scale, not a no-code hobbyist who vanishes when something breaks. I work in Make, n8n, and Google Apps Script, and I write real code against the Amazon, Shopify, and marketplace APIs when the no-code tool runs out of room. On Upwork that adds up to 1,880+ hours, $100K+ earned, a 100% Job Success Score, and Top Rated Plus. If part of your operation is held together by manual work right now, send me the details and I'll tell you straight whether it's worth automating and how I'd build it.

✅ Live AI agents on luxury property sites ✅ Built with Cowork + Claude API (custom JavaScript integration) ✅ Currently running 7 active contracts on Upwork ✅ 17 jobs total | 100% JSS | $50K+ earned | Top Rated Plus | 5+ years I have one slot opening in the next 2 weeks. What I do (and do well) 🤖 AI Agents & AI Integration I build production AI agents that capture leads, qualify visitors, search inventory, schedule bookings, and answer real customer questions. Not basic chatbots. Real agents that take actions. Currently live on 2 luxury holiday rental businesses in Australia. 🏗️ Full-Stack Web & Cross-Platform Mobile Next.js 15 + Node.js + Supabase / PostgreSQL for web. React Native + Expo for iOS and Android from one codebase. From idea to App Store, end to end ownership. Tech: Anthropic Cowork, Claude API, OpenAI API, function calling, RAG pipelines, custom JavaScript integrations. ☁️ Cloud Architecture & Microservices I design and deploy production systems on AWS (Lambda, EC2, S3, API Gateway, RDS), GCP, Azure, Vercel, and DigitalOcean. Microservice architecture, API Gateway design, serverless functions, auto-scaling, and CI/CD pipelines. 💳 Payment & Subscription Systems Production payment integrations across multiple providers: Stripe (including Stripe Connect for marketplaces), PayPal, Apple Pay, Google Pay, Razorpay, PayFast, and regional payment gateways. Webhook handling, PCI compliance considerations, subscription management, and refund flows. 🔌 Third-Party API Integrations Twilio (SMS, Voice, WhatsApp), SendGrid, Mailgun, Resend (email), Firebase, OneSignal (push notifications), Google Maps, Mapbox, HubSpot, Salesforce, and dozens of CRM/marketing APIs. 🔧 Production Hardening & Code Rescue Currently mid-engagement on Vite + Supabase RLS audit and secret management for a fintech client. Specialty: rescuing apps from previous developers and bringing them to production grade. Live products you can verify 🔹 livelyproperties AI agent for luxury Australian holiday rentals. Lead capture, property search, and booking inquiries. Featured in Marriott Bonvoy, Gourmet Traveller, and Boss Hunting. 🔹 peachyproperties AI agent for boutique property rentals. Same architecture, different brand. 🔹 IsThisLegit.ai AI scam detection tool with Outlook consent add-in (Next.js + OpenAI). 🔹 Money Remittance App (Vera Moreno) React Native + Stripe + secure payments. Live on App Store. 🔹 Enterprise CRM Dashboard 3-year ongoing engagement. 2,044 hours delivered. $35K+ billed. Still active. Trust signal that matters more than badges. Why clients keep me long-term ✓ 7 active contracts running simultaneously, all current ✓ 100% Job Success Score across every closed contract ✓ Reply within 6 hours, 7 days a week ✓ Honest scoping. I tell you when AI is the wrong solution. ✓ Senior ownership end to end. No "that is not my job" attitude. ✓ I architect for scale from day one. No technical debt apologies later. Recent client outcomes → Material UI Next.js project: 185 hours delivered, pixel perfect, 5-star review ($2,829) → Vite CRM production hardening: 270 hours mid-engagement ($6,846) → React Native mobile improvements: shipped on time, 5-star review → Node.js + AWS S3 backend: 3 hours, perfect estimation, glowing review → Enterprise CRM platform: 2,044 hours, ongoing, $35K+ delivered My complete stack AI: Cowork (Anthropic), Claude API, OpenAI API, LangChain, Function Calling, RAG. Frontend: React 19, Next.js 15, TypeScript, Tailwind CSS, Zustand, React Query. Mobile: React Native, Expo SDK 52, EAS Build. Backend: Microservices, Node.js, Express, NestJS, REST + GraphQL, WebSockets. Cloud: AWS (Lambda, EC2, S3, API Gateway, RDS), GCP, Azure, Vercel, Netlify, DigitalOcean, Docker. Databases: PostgreSQL, MongoDB, Supabase, Redis. Payments: Stripe, Stripe Connect, PayPal, Apple Pay, Google Pay, Razorpay, PayFast, regional gateways. Integrations: Twilio (SMS/Voice/WhatsApp), SendGrid, Mailgun, Resend, Firebase, OneSignal, Google Maps, Mapbox, HubSpot, Salesforce. A note on rates My published rate is $40/hr. Existing long-term contracts run at their original lower rates by mutual agreement. New contracts start at $40-55/hr based on scope. Cloud architecture, payment systems, and AI integration projects start at $50-65/hr. Next step Send me 2 to 3 lines about what you are building or fixing. Within 24 hours you get: 1. A free 15-minute consultation 2. Honest scope and timeline 3. Whether I am the right fit for your project For AI agent projects, share your site URL and I will analyze the integration approach before our call.

I'm a professional Full Stack Developer & AI Solutions Engineer with 8+ years of hands-on expertise. 𝐌𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐨𝐟𝐭𝐞𝐧 𝐬𝐚𝐲 𝐭𝐡𝐚𝐭 𝐦𝐲 𝐰𝐨𝐫𝐤 𝐬𝐩𝐞𝐚𝐤𝐬 𝐟𝐨𝐫 𝐢𝐭𝐬𝐞𝐥𝐟. Here’s what my recent client had said👇👇 "🌟 𝑷𝒂𝒓𝒊𝒎𝒂𝒍𝒃𝒉𝒂𝒊: 𝑭𝒓𝒐𝒏𝒕-𝑬𝒏𝒅 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 𝑬𝒙𝒕𝒓𝒂𝒐𝒓𝒅𝒊𝒏𝒂𝒊𝒓𝒆! 🌟 𝑷𝒂𝒓𝒊𝒎𝒂𝒍𝒃𝒉𝒂𝒊 𝒉𝒂𝒔 𝒑𝒓𝒐𝒗𝒆𝒏 𝒕𝒐 𝒃𝒆 𝒂𝒏 𝒊𝒏𝒗𝒂𝒍𝒖𝒂𝒃𝒍𝒆 𝒂𝒔𝒔𝒆𝒕 𝒕𝒐 𝒐𝒖𝒓 𝒕𝒆𝒂𝒎, 𝒄𝒐𝒏𝒔𝒊𝒔𝒕𝒆𝒏𝒕𝒍𝒚 𝒅𝒆𝒍𝒊𝒗𝒆𝒓𝒊𝒏𝒈 𝒆𝒙𝒄𝒆𝒑𝒕𝒊𝒐𝒏𝒂𝒍 𝒇𝒓𝒐𝒏𝒕-𝒆𝒏𝒅 𝒔𝒐𝒍𝒖𝒕𝒊𝒐𝒏𝒔 𝒘𝒊𝒕𝒉 𝒑𝒓𝒆𝒄𝒊𝒔𝒊𝒐𝒏 𝒂𝒏𝒅 𝒄𝒓𝒆𝒂𝒕𝒊𝒗𝒊𝒕𝒚… 𝑳𝒐𝒐𝒌𝒊𝒏𝒈 𝒂𝒉𝒆𝒂𝒅, 𝒘𝒆 𝒆𝒂𝒈𝒆𝒓𝒍𝒚 𝒂𝒏𝒕𝒊𝒄𝒊𝒑𝒂𝒕𝒆 𝒇𝒖𝒓𝒕𝒉𝒆𝒓 𝒄𝒐𝒍𝒍𝒂𝒃𝒐𝒓𝒂𝒕𝒊𝒐𝒏𝒔 𝒕𝒉𝒂𝒕 𝒑𝒖𝒔𝒉 𝒃𝒐𝒖𝒏𝒅𝒂𝒓𝒊𝒆𝒔 𝒂𝒏𝒅 𝒚𝒊𝒆𝒍𝒅 𝒓𝒆𝒎𝒂𝒓𝒌𝒂𝒃𝒍𝒆 𝒓𝒆𝒔𝒖𝒍𝒕𝒔." ✅ Top Rated Expert by Upwork ✅ 100% Job Success (Client Satisfaction Ratio) ✅ High-Quality Work ✅ Cost-Efficient Services ✅ Fluent English Verified ✅ 8+ Years Of Experience ✅ No Upfront Payment (Upwork escrow) ✅ Long-term working relationship 🌐 AI & Emerging Technology Expertise: OpenAI API – Integrating ChatGPT models for chatbots, content generation, and NLP solutions Google Gemini – Leveraging multimodal AI for advanced search, summarization, and predictive analytics Azure AI Services – Implementing Computer Vision, Cognitive Search, and Azure OpenAI integrations for enterprise applications Custom Machine Learning Pipelines – Creating and deploying ML models for recommendation engines, sentiment analysis, and automation workflows Expertise in .NET Framework → .NET Core migration Why you should hire me? ✔ Strong frontend, backend, and AI integration knowledge ✔ Expertise in developing AI-powered applications alongside traditional web & mobile apps ✔ Responsive, scalable solutions across all devices ✔ On-time delivery with uncompromising quality ✔ Always updated with the latest technologies & AI trends My Core Skills and Experiences: ➥ FRONT-END: ► React.js | Angular.js | Node.js | HTML5 | CSS3 | Bootstrap | JavaScript | jQuery ➥ BACKEND: ► PHP | CodeIgniter | Laravel | ASP.NET | C# | .NET Core | EF | MVC ➥ AI & CLOUD: ► OpenAI | Google Gemini | Azure AI | LangChain | Pinecone | TensorFlow | Azure Cognitive Services ➥ Web Services: ► SOAP | REST | WSDL | UDDI ➥ CMS: ► WordPress | WooCommerce ➥ DATABASES & PAYMENT PROCESSING: ► MySQL, MSSQL, SQLite, MS Access ► PayPal, Stripe, Braintree ➥ Development Processes: ► Agile | Waterfall 💬 FREE CONSULTATION: Let's discuss your project and see how we can combine modern full-stack development with cutting-edge AI solutions to give your business an edge