Redis Expert | Node.js Architect | AWS Certified | 100% Job Success | Top Rated Plus | Database specialist | Kubernetes | Product Principle Engineer I build high-performance, scalable back-end systems trusted by startups and enterprises across Europe and the US. With 9+ years of hands-on experience, I specialize in Redis architecture (caching, pub/sub, streams, RedisSearch), Node.js microservices, and cloud-native solutions on AWS. What I bring to your project: - Redis mastery: designing low-latency caching layers, real-time leaderboards, session management, and full-text search with RedisSearch - Node.js & TypeScript: building RESTful and GraphQL APIs, gRPC services, and event-driven architectures with Kafka - AWS Certified: EC2, Lambda, RDS, ElastiCache, S3, CloudFront, ECS, architecting for reliability and cost-efficiency - Database expertise: MongoDB (DBA level), PostgreSQL, MySQL schema design, query optimization, indexing - DevOps-ready: Docker, Kubernetes, CI/CD pipelines, NGINX, PM2 - AI & RAG pipelines: integrating LLMs with vector databases for intelligent search and retrieval systems - Fantasy Sports platforms: built real-time scoring engines handling millions of concurrent users What sets me apart: - 100% Job Success Score with Top Rated Plus badge on Upwork - AWS Certified Developer with proven production deployments - Clear, proactive communication, I keep you informed at every stage - Timezone-flexible: regularly working with European (CET/GMT) and US (EST/PST) clients - Clean, well-documented code with thorough testing I've delivered solutions for fintech, fantasy sports, e-commerce, and SaaS platforms. Whether you need a Redis performance overhaul, a scalable Node.js API, or a full-stack cloud architecture, I deliver results that matter to your business. I overlap 2.5 hours with UK morning, 4.5 hours with US Eastern late-evening, and full overlap with UAE, Singapore, and Africa timezones. I reply within 4 hours during my work day and give estimates before starting. Risks named upfront, not after they hit. I believe in delivering value first and building long-term trust before focusing on payments. Let's build something great together.

Senior .NET Core engineer building production systems where correctness isn't optional real-money trading platforms, law enforcement evidence systems, and AI-integrated fintech, for US and UK clients. ➤ Order Management & Risk Management System Velocity Clearing (US equity clearing firm) Tech: .NET Core, FIX protocol, SQL Server, Apache Ignite, NetMQ 🔹 Fixed a production race condition causing incorrect margin approvals under peak load — diagnosed with dotnet-trace/PerfView, not guesswork 🔹 Built real-time order lifecycle event streaming with strict ordering guarantees ➤ Digital Evidence Management Platform US law enforcement (GETAC) Tech: .NET Core, Python, YOLO v7, OpenCV, CUDA, Kafka, Azure 🔹 Computer vision pipeline processing video evidence at scale with confidence-scored detection 🔹 Strict tenant isolation, audit trails on every mutation, zero cross-case data leakage ➤ Keytomic AI SEO SaaS Platform (built and shipped) Tech: .NET Core, OpenAI API, PostgreSQL 🔹 1,200+ active users, featured on Product Hunt 🔹 Multi-tenant architecture, automated content generation pipeline ➤ Customs Declaration Automation UK/EU logistics (FF Customs) Tech: .NET Core, OpenAI agentic workflow, HMRC Sequoia integration 🔹 80% reduction in manual document processing I use Claude Code daily to move faster but architecture decisions and code quality are always mine to own, never unreviewed AI output. I read before I touch, ship incrementally, and document what changed and why. Available for long-term engagements and fixed-scope projects, with workable US/UK timezone overlap. Backend: C#, ASP.NET Core, CQRS, MediatR, Clean Architecture, Entity Framework Core AI/LLM: OpenAI, Anthropic Claude, RAG pipelines, LangChain, pgvector, Azure Cognitive Search Cloud: Azure (App Services, Data Factory, DevOps), AWS (EC2, Lambda, S3, RDS) Data: SQL Server, PostgreSQL, Redis, Apache Kafka Real-time: SignalR, WebSockets, gRPC Keywords: .NET Core developer, C# developer, ASP.NET Core developer, Azure developer, AWS developer, AI integration developer, OpenAI API developer, Claude API developer, RAG pipeline developer, SQL Server developer, PostgreSQL developer, microservices developer, full stack .NET developer, trading systems developer, fintech backend developer.

Your deployments should be boring — automated, reliable, and fast. I'm a DevOps and full-stack engineer with 7+ years building production systems on AWS, GCP, and Azure that ship on every push without breaking. Most of my work is fixing what slows teams down: fragile deploys, manual release processes, and backends that buckle under load. If you've got a backend that's bottlenecking, a deployment process held together with duct tape, or infrastructure you're not confident scaling, that's the kind of problem I'm good at. 🚀 𝐇𝐎𝐖 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 ⭐ ❝Faizan quickly identified and fixed the performance issues in our Node.js backend. He focused on the real bottlenecks, delivered clean and effective improvements, and communicated clearly throughout the task. Everything was completed on time and within budget.❞ – Chris B., Client ⭐ ❝Faizan did an outstanding job resolving our CI/CD pipeline issue. He quickly diagnosed the problem, explained his process clearly, and implemented a solution that made our deployments faster and fully automated. His expertise with Docker, GitHub Actions, and AWS is impressive.❞ – Ali H., Client ⭐ ❝I highly recommend Faizan, he is amazing tbh. If you are deciding between Faizan, take this review as a sign to hire him! Faizan was excellent to work with from start to finish. He communicated clearly, stayed organized, and consistently delivered high-quality work on schedule.❞ – Jo Walker, BluX 🏆 7+ Years in DevOps, Cloud Engineering & Full-Stack Development 🎖 AWS, GCP & Azure | Docker, Kubernetes, Terraform, CI/CD 🏅 Production Experience with Rails, Node.js, Django, PostgreSQL & Redis Have a look at my portfolio and case studies below — real builds, real infrastructure work, and the performance and deployment problems I've solved. ➤ 𝐇𝐎𝐖 𝐈 𝐖𝐎𝐑𝐊 Message me with what you're dealing with and I'll give you an honest read on it — whether it's a quick fix or a bigger rebuild — plus a clear plan to get it done. No filler, no overselling. If it's not something I'm the right fit for, I'll tell you that too. 🛠️ 𝐓𝐎𝐎𝐋𝐒 & 𝐓𝐄𝐂𝐇𝐍𝐎𝐋𝐎𝐆𝐘 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 • AWS (EC2, ECS, Lambda, RDS, S3, CloudFront, IAM) • Google Cloud (GKE, Cloud Run, Compute Engine) • Azure • Docker • Kubernetes • Helm • Terraform • CI/CD • GitHub Actions • GitLab CI • Jenkins • AWS CodePipeline • Azure DevOps • Linux • Nginx 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • Node.js • Express.js • Ruby on Rails • Django • Django REST Framework • REST APIs • GraphQL • WebSockets 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • React.js • Next.js • Redux • Tailwind CSS • HTML/CSS • JavaScript 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 & 𝐂𝐚𝐜𝐡𝐢𝐧𝐠 • PostgreSQL • MongoDB • MySQL • Redis 𝐌𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠 & 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐨𝐧 • Prometheus • Grafana • Git • Slack • Jira DevOps Engineer, Cloud Engineer, AWS DevOps, Kubernetes, Docker, CI/CD Pipeline, Terraform, Infrastructure as Code, Full Stack Developer, React Developer, Node.js Developer, Ruby on Rails Developer, Django Developer, API Development, AWS Solutions Architect

I build production-grade web applications and backend systems that scale — and I have the metrics to back it up. Over 5 years I've shipped full-stack systems across SaaS, logistics, and AI platforms. At PortPro, a drayage SaaS serving thousands of drivers across the US, I cut Mapbox API costs from $12K to $1.5K/month by architecting an intelligent caching layer, reduced database storage by 88% (700GB → 80GB) via a TimescaleDB migration, and led a team of 5 engineers to maintain 99.9% production uptime. Currently at Arrow Transport in Sydney, I'm building an enterprise logistics platform on .NET Core, React, and AWS ECS handling Australia-wide operations. On Upwork, I've delivered 15+ projects with a 100% Job Success Score and Top Rated Plus status — including a GPU-accelerated AI video generation SaaS (Produce.so), an AI companionship app backend (Frankie AI), and a Paddle-integrated property management platform (Host & Guest). What I build: — Full-stack web applications: React, Next.js, TypeScript, Node.js, NestJS — Backend systems and REST/GraphQL APIs: PostgreSQL, MongoDB, Redis — Cloud infrastructure: AWS (ECS, Lambda, S3, CloudWatch), Docker, Kubernetes — AI integrations: OpenAI API, Claude API, LangGraph, RAG pipelines — Async processing: BullMQ, FFmpeg video pipelines, webhook systems — Auth and payments: JWT, OAuth2, Stripe, Paddle, Apple Pay, Google Pay I'm based in Sydney, Australia (AEST) and available 30–40 hours per week. If you need someone who writes clean, documented code and communicates clearly throughout — let's talk.

𝗔𝗿𝗲 𝘆𝗼𝘂 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿 𝗮 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝘄𝗵𝗼 𝘁𝗿𝘂𝗹𝘆 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝘀 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝘀𝘆𝘀𝘁𝗲𝗺𝘀? Someone who can build 𝗹𝗼𝘄-𝗹𝗮𝘁𝗲𝗻𝗰𝘆, 𝗵𝗶𝗴𝗵-𝗰𝗼𝗻𝗰𝘂𝗿𝗿𝗲𝗻𝗰𝘆, 𝗮𝗻𝗱 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲𝘀 using 𝗪𝗲𝗯𝗥𝗧𝗖, 𝗪𝗲𝗯𝗦𝗼𝗰𝗸𝗲𝘁𝘀, 𝗦𝗼𝗰𝗸𝗲𝘁.𝗜𝗢, 𝗮𝗻𝗱 𝗔𝗣𝗜-𝗱𝗿𝗶𝘃𝗲𝗻 𝗺𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 not just basic CRUD APIs? If your product requires 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻, 𝗹𝗶𝘃𝗲 𝘀𝘁𝗿𝗲𝗮𝗺𝗶𝗻𝗴, 𝗰𝗵𝗮𝘁 𝗮𝗽𝗽𝘀, 𝗦𝗮𝗮𝗦 𝗯𝗮𝗰𝗸𝗲𝗻𝗱𝘀, 𝗵𝗶𝗴𝗵-𝘁𝗿𝗮𝗳𝗳𝗶𝗰 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀, 𝗼𝗿 𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲-𝗰𝗿𝗶𝘁𝗶𝗰𝗮𝗹 𝘀𝘆𝘀𝘁𝗲𝗺𝘀, you’ve found the right expert. I’m 𝗛𝗮𝗿𝗶𝘀𝗵 𝗩., a 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗥𝗲𝗮𝗹-𝗧𝗶𝗺𝗲 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 with 𝟭𝟬+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 delivering 𝘀𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗮𝗮𝗦 𝗯𝗮𝗰𝗸𝗲𝗻𝗱𝘀, 𝗪𝗲𝗯𝗥𝗧𝗖 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀, 𝗮𝗻𝗱 𝗵𝗶𝗴𝗵-𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝘀𝘆𝘀𝘁𝗲𝗺𝘀. 𝗦𝗣𝗘𝗖𝗜𝗔𝗟𝗜𝗭𝗔𝗧𝗜𝗢𝗡: 𝗥𝗘𝗔𝗟-𝗧𝗜𝗠𝗘 & 𝗛𝗜𝗚𝗛-𝗣𝗘𝗥𝗙𝗢𝗥𝗠𝗔𝗡𝗖𝗘 𝗕𝗔𝗖𝗞𝗘𝗡𝗗 𝗘𝗡𝗚𝗜𝗡𝗘𝗘𝗥𝗜𝗡𝗚 I focus on engineering real-time backend systems that don’t fail under stress. My work handles thousands of concurrent users, supports low-latency live data, and integrates seamlessly with WebRTC, WebSockets, and microservices architectures. 𝗪𝗵𝗮𝘁 𝗜 𝗱𝗲𝗹𝗶𝘃𝗲𝗿: • WebRTC backend engineering • WebSockets / Socket real-time systems • Low-latency, high-concurrency backend architecture • Scalable REST & event-driven APIs • SaaS platform backends • Real-time messaging & live notifications • Microservices & distributed systems • Performance optimization & bottleneck elimination • Cloud-ready backend solutions (AWS, GCP, Azure) This is real-time backend architecture, not just “backend development.” 𝗖𝗢𝗥𝗘 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 𝗜 𝗣𝗥𝗢𝗩𝗜𝗗𝗘 1️⃣ Real-Time Systems & WebRTC Signaling servers, TURN/STUN configuration, session management Real-time video, voice, and messaging platforms Event-driven data streams & live notifications High-concurrency, low-latency infrastructure 2️⃣ Scalable Backend & APIs RESTful & GraphQL APIs for SaaS products Microservices design & modular backend architecture Third-party integrations: payments, SMS, notifications, social login Secure authentication & authorization flows 3️⃣ Performance, Reliability & Scalability Database optimization: MySQL, PostgreSQL, MongoDB Redis caching & background processing Queue-based async systems, message brokers (RabbitMQ, Kafka) Bottleneck detection & backend refactoring High-traffic backend engineering 4️⃣ DevOps & Cloud Infrastructure Dockerized deployments, container orchestration CI/CD pipelines & automated deployments AWS / GCP / Azure cloud backend readiness Production-tested, highly maintainable backend systems I solve the critical problems that hold your product back, including: ⟢ Scaling WebRTC backends for flawless signaling, media server integration, and peer-to-peer communication ⟢ Stabilizing WebSockets systems so they can handle thousands of concurrent users without lag or downtime ⟢ Building low-latency APIs that keep your SaaS platform fast, reliable, and responsive ⟢ Preventing backend crashes under high traffic with optimized architecture and bottleneck removal ⟢ Designing real-time systems that scale effortlessly, from small teams to global user bases I don’t just patch problems, I engineer high-performance, production-ready backend systems that let startups and SaaS businesses grow without limits. 𝗜𝗳 𝘆𝗼𝘂 𝗻𝗲𝗲𝗱 𝗮 𝗿𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗯𝗮𝗰𝗸𝗲𝗻𝗱 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁 𝘄𝗵𝗼 𝗰𝗮𝗻 𝗵𝗮𝗻𝗱𝗹𝗲 𝗵𝗶𝗴𝗵 𝗰𝗼𝗻𝗰𝘂𝗿𝗿𝗲𝗻𝗰𝘆, 𝗹𝗼𝘄 𝗹𝗮𝘁𝗲𝗻𝗰𝘆, 𝗪𝗲𝗯𝗥𝗧𝗖, 𝗪𝗲𝗯𝗦𝗼𝗰𝗸𝗲𝘁𝘀, 𝗮𝗻𝗱 𝗦𝗮𝗮𝗦 𝗯𝗮𝗰𝗸𝗲𝗻𝗱𝘀, 𝗹𝗲𝘁’𝘀 𝗱𝗶𝘀𝗰𝘂𝘀𝘀 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝘁𝗼𝗱𝗮𝘆.

Ruby on Rails and Vue.js full-stack developer with 8+ years of experience building SaaS platforms, marketplaces, CRM systems, and healthcare applications from scratch. I’ve shipped production systems handling 1M+ monthly transactions, built a pharma analytics platform used by enterprise B2B clients for over 6 years, and delivered Vue.js and Node.js applications for clients across the US, EU, and UK. 🧠 Backend: Ruby on Rails, Ruby, REST APIs, GraphQL, PostgreSQL, MySQL, Redis, Sidekiq, Apache Kafka, JWT, OAuth2, RSpec (90%+ test coverage), Capybara, Swagger 🎨 Frontend: Vue.js, Vue 3, Nuxt.js, Vuex, Pinia, Vue Router, JavaScript, TypeScript, Tailwind CSS, Hotwire, Stimulus, WebSockets, Stripe integrations ⚙️ Infrastructure: Docker, GitHub Actions, AWS S3, Azure, Heroku, Nginx, Capistrano, CI/CD pipelines What this looks like in practice: → Built and maintained REST and GraphQL APIs consumed by Vue.js SPAs with clean architecture, versioning, and full documentation → Optimized complex PostgreSQL queries, improving performance in systems with 1M+ monthly transactions → Migrated CI/CD pipelines from CircleCI to GitHub Actions, reducing costs while maintaining production stability → Implemented Kafka-based event streaming and optimized data flows in microservice-based systems → Integrated Stripe payments and real-time WebSocket features in Vue.js and Node.js / NestJS applications → Refactored and extended legacy Ruby on Rails systems without breaking existing functionality → Maintained 90%+ test coverage using RSpec and Capybara in production-grade systems How I work: I communicate clearly from day one, define scope before development starts, identify risks early, and keep progress transparent throughout the project. I’ve worked both independently on full-stack products and in distributed teams with async workflows. Looking for a Ruby on Rails or Vue.js developer who delivers reliable production systems, not just code commits? Let’s talk.

Senior Data Engineer with 7+ years building scalable ETL/ELT pipelines, real-time data processing, and cloud-native data platforms on AWS. 100% Job Success, Top Rated, $40K+ earned. I help startups and data teams move data reliably — from ingestion to analytics-ready APIs — and increasingly, into LLM/RAG workloads. WHAT I BUILD: - ETL/ELT pipelines — batch & near-real-time ingestion from APIs, databases, and event streams (Kafka, message queues) - Data modeling & warehousing — PostgreSQL, MongoDB, Redis, Elasticsearch, optimized for query performance and analytics - Backend data services — FastAPI, Flask, Django; REST & GraphQL APIs that expose clean, validated data to downstream apps and dashboards - AI/LLM data pipelines — RAG systems, embedding workflows, vector search (Pinecone, FAISS) using OpenAI APIs and LangChain - Cloud & deployment — AWS (EC2, Lambda, S3, RDS, API Gateway), Docker, serverless, CI/CD with GitHub Actions RESULTS I'VE DELIVERED: - Improved query performance by 30% through indexing and storage strategy - Cut infrastructure costs 25% via serverless and optimization - Reduced deployment time 45% with CI/CD automation - Maintained 99.5%+ uptime across production environments HOW I WORK: Clear communication, fast turnaround, and production-grade code — not prototypes that break. I treat your data infrastructure like it's my own: documented, tested, and built to scale. If you need a data engineer who can also bridge into AI/ML workloads, let's talk. Send me a message with your project and I'll tell you honestly whether I'm the right fit.

AI systems should do more than just look impressive. They should automate workflows, improve decisions, and create measurable business value. I’m an AI Automation Engineer with 5+ years of experience building AI agents, workflow automation systems, and production-grade Python applications. I help startups and businesses automate operations using Python, n8n, FastAPI, RAG pipelines, OpenAI, LangChain, Django, and LLM-powered agent systems. 𝗥𝗲𝗰𝗲𝗻𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: ⤷ AI-powered workflow automation systems ⤷ Custom GPT and LLM integrations ⤷ Backend APIs and SaaS platforms ⤷ Web scraping and data extraction pipelines ⤷ Time-series analytics and AWS-based systems ⤷ Internal AI tools and business process automation 𝐖𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡: ⤷ AI Automation & AI Agents ⤷ OpenAI / GPT Integrations ⤷ LangChain & LLM Applications ⤷ Python Backend Development (FastAPI, Django, Flask) ⤷ REST APIs & SaaS Architectures ⤷ Web Scraping & Data Pipelines ⤷ PostgreSQL, Redis, Celery, Docker, AWS ⤷ Deployment, Scaling & Performance Optimization Python & AI Automation Stack Python · FastAPI · LangChain · LangGraph · OpenAI · Anthropic Claude · n8n · PostgreSQL · Redis · ChromaDB · Docker · AWS · Supabase · Celery · RabbitMQ 💬 Why Clients Hire Me for AI Automation ⤷ Top-rated 5-star developer ⤷ Smooth communication and fast turnaround ⤷ Focused on long-term collaboration and clean code Whether you need an AI MVP, AI agent, Python backend, automation platform, or custom AI workflow, I can help turn your idea into a reliable production-ready product. 📈 Let's build your next AI automation solution with performance, stability, and future scale in mind. 📩 Message me to discuss your project. Also searched as: FastAPI developer, LangChain engineer, LangGraph developer, AI agent developer, n8n developer, RAG developer, agentic AI engineer, Python automation engineer, OpenAI integration developer, AI workflow automation engineer, backend API developer, LLM application developer, Python backend engineer, multi-agent system developer, n8n automation specialist, LangChain RAG developer, FastAPI backend developer, AI agent builder.

I am a Full Stack Developer with strong expertise in building scalable, secure, and high-performance web applications. My work covers everything from modern frontend UIs to robust backend APIs and cloud-native deployments, allowing me to deliver complete end-to-end solutions for businesses and startups. ✅ Frontend Development - React.js, Next.js, Vue.js for responsive, component-driven interfaces - TailwindCSS, shadcn/ui, Material UI for clean and consistent design systems - Three.js, Framer Motion, and Lottie for interactive 3D visuals and animations - Performance improvements through code splitting, lazy loading, and caching ✅ Backend Engineering - Node.js (Express, Nest.js) and Python (Django, FastAPI) for REST/GraphQL APIs - Java (Akka) and C# for concurrent backend services and custom modules - PostgreSQL, MongoDB with Prisma and Drizzle ORM for type-safe, optimized data modeling - Redis for caching, pub/sub, and real-time event streaming - RabbitMQ for message queues and async processing - Protocol Buffers and gRPC for low-latency inter-service communication - Authentication, authorization, and role-based access control for secure systems ✅ DevOps & Cloud Infrastructure - Dockerized microservices orchestrated with Kubernetes for scaling and reliability - AWS (EC2, ECS, S3, CloudFront, CodePipeline) and GCP for production deployments - Nginx for reverse proxy, SSL termination, and load balancing - Terraform and Ansible for Infrastructure as Code and reproducible environments - CI/CD pipelines (GitHub Actions, GitLab CI/CD, AWS CodePipeline) for automated releases - Monitoring and observability with Grafana, ELK, and Prometheus ✅ Web3 Integrations (when required) - Wallet authentication (MetaMask, WalletConnect) for web apps - Secure integrations with smart contracts using Web3.js/Ethers.js - NFT support, royalties, and tokenized transactions inside web platforms ✅ Why Clients Hire Me I’ve delivered platforms like Gameree, Dopewarz, and Antara, along with multiple SaaS-based projects where I handled the frontend, backend, and infrastructure. From designing responsive user interfaces to implementing real-time features, optimizing databases, and deploying cloud-ready applications, I ensure the systems I build are scalable, secure, and production-ready from day one. If you need a developer who can own the full lifecycle of your product and optionally extend it with Web3 functionality, I’d be glad to help. #FullStackDeveloper #Blockchain #SmartContracts #Solidity #Web3 #NFT #DeFi #MERNStack #DevOps #AWS #Docker #Kubernetes #GameFi #NFTMarketplace #Microservices #Ethersjs #Web3js #HighScalability #SecureDevelopment #CI_CD #React #Nodejs #PlayToEarn #Nestjs #Next #JavaAkka #Elk #Rust #Solana #Metamask #Phantom

Data and AI teams hire me when they need one engineer who can own the Python backend, build the ETL pipeline, and integrate LLM models without splitting that into three separate roles. 6 years, AWS Certified Cloud Practitioner, 100% JSS, $20K+ earned on Upwork. One unusual differentiator: I hold a Master's degree in Radiology from Kharkiv National Medical University. For Healthcare AI and medical data products, I understand the domain, not just the stack. What I have built: AI Website Builder (2 years, Lead, team of 15): led backend architecture for an AI-powered page generation platform. LLM content generation, SEO processing, async delivery via Celery and Redis. Stack: FastAPI, OpenAI, LangChain, PostgreSQL, AWS, Docker, React, Stripe. Sensitive Data Monitoring SaaS (1.5 years): high-load backend scanning cloud sources for sensitive data leaks. Distributed processing with Kafka, NLP and OCR detection pipelines, Elasticsearch and Cassandra at scale. Stack: Python, FastAPI, Kafka, Elasticsearch, Neo4j, Redis, AWS. Blockchain Security Platform (1 year, team of 13-15): ETL pipelines for detecting suspicious wallet behavior across blockchain data. Graph database modeling with Neo4j, full AWS infrastructure. Stack: Python, FastAPI, Neo4j, PostgreSQL, AWS (EC2, ECS, RDS, Lambda). Web Automation Platform (1 year): reverse-engineered authenticated HTTP request flows, automated login and data extraction workflows, session management and CSRF handling. Stack: Python, asyncio, aiohttp, Playwright, Docker. On Upwork: 10 contracts, $20K+ earned, 313 hours, 100% JSS. Python ETL, web automation, data extraction, scraping pipelines. How I work: Requirements and solution design before implementation. I take ownership from spec to production. Unit tests, async-aware Pytest coverage, API documentation maintained throughout the project. I communicate clearly on blockers without being asked. I operate with the full backing of Meduzzen's senior engineering team. Every commit I ship is peer-reviewed by our internal technical leads before deployment. If I am unavailable, your sprints do not stop: a fully briefed Meduzzen engineer provides immediate coverage. One point of contact, zero single-point-of-failure risk. Core stack: Python, FastAPI, Django, PostgreSQL, Redis, Celery, Kafka, Elasticsearch, Neo4j, Docker, Kubernetes, AWS (EC2, ECS, RDS, Lambda, S3), LangChain, OpenAI, React, TypeScript, GitHub Actions. If you need a Python backend engineer who can own data pipelines and AI integration in the same role, send me the architecture brief. I will tell you how I would structure it.