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I help product teams move from "working but fragile" to "scalable and reliable." When you scale, your architecture breaks. When you integrate third-party APIs, data syncs fail. When you deploy, downtime costs money. I architect systems that solve these problems at their root—not patch them. With 85+ projects with 7,000+ working hours, and $200K+ in products architected, I've learned the difference between code that works today and systems that work at enterprise scale. THE PROBLEMS I SOLVE Scaling Web Applications: Your current architecture can't handle 10K concurrent users? I architect full-stack systems using React, Next.js for frontend, Node.js and NestJS for backend, with TypeScript for type safety. For databases, I optimize PostgreSQL for relational data and MongoDB for document-heavy workloads, implement Redis caching, and deploy on AWS infrastructure with CI/CD pipelines. The result? Latency down 60%, infrastructure costs down 30-40%. WordPress & Custom Web Development: Running a WordPress site but hitting its ceiling? I build custom WordPress solutions with PHP plugins, child themes, and integrations that typical agencies can't deliver. Or I build headless WordPress backends with React frontends for complete control over your web design and user experience. Shopify & E-Commerce: Shopify hitting its limitations? I architect custom backends using Node.js and Next.js, integrate Shopify APIs, orchestrate payments with Stripe, implement real-time inventory sync with PostgreSQL, and build conversion-focused web design that scales. Perfect for stores needing functionality beyond Shopify's platform. API Integration & Data Sync: Struggling with third-party APIs (HubSpot, Salesforce, custom webhooks)? I architect integration systems using REST APIs, GraphQL for query efficiency, and event-driven architecture. Built with proper error handling, monitoring, and reliability—data doesn't silently fail. Multi-Platform Development: Need your product on web, iOS, and Android without rebuilding three times? I architect unified systems using React Native that share 70%+ of code, with JavaScript/TypeScript across the stack and PostgreSQL as the source of truth. AI-Powered & Agentic Development: Embedding LLMs, RAG pipelines, agentic workflows, or autonomous agents without budget explosion? I architect intelligent systems using Python for data science, Node.js for orchestration, vector databases for semantic search, and cost optimization throughout. Agentic development is my specialty—I build systems that think, not just execute commands. DevOps & Infrastructure: Your deployment process is manual and scary? I design and implement CI/CD pipelines, containerization with Docker, infrastructure as code with Terraform, serverless architectures where they make sense, and monitoring/observability so you sleep at night. Zero-downtime deployments are standard in my architecture. Website Design & Redesign: Redesigning your web presence? I combine developer expertise with designer sensibility. Using Figma for design, I build responsive websites with HTML5, CSS, and JavaScript that are pixel-perfect, SEO-optimized, and conversion-focused. HOW I WORK First, I diagnose. I ask: "What's actually breaking when you scale? What's your real constraint?" Not everyone needs GraphQL or serverless; sometimes a well-architected REST API with proper caching solves it cheaper and faster. Then, I architect before coding. You see the full technical strategy upfront—which frameworks matter (React vs Next.js?), which databases (PostgreSQL vs MongoDB?), which infrastructure (AWS vs serverless?). You understand the trade-offs. Finally, I execute with reliability first. Whether it's DevOps, agentic automation, or traditional backend logic, I build with monitoring, error handling, and graceful degradation. Your platform doesn't crash, and your next engineer can maintain this. RECENT PROJECT: BigPhotoHunt (Full Stack Ownership) Architected a high-traffic social platform from ground up using React and Next.js frontend, Node.js/NestJS backend, PostgreSQL database, and AWS infrastructure with containerized Docker deployments. Implemented CI/CD pipelines for zero-downtime releases. Scaled from 0 to 50K+ daily active users with 100+ production deployments and zero incidents. Optimized Core Web Vitals (LCP: 2.8s → 900ms). TECHNICAL EXPERTISE Languages: JavaScript, TypeScript, Python, PHP Frontend: React, Next.js, HTML5, CSS, Figma Backend: Node.js, NestJS, Express, FastAPI Databases: PostgreSQL, MongoDB, Redis Platforms: WordPress, Shopify (API Integration) Cloud & DevOps: AWS, Docker, Terraform, CI/CD, serverless architecture APIs: REST, GraphQL, Webhook orchestration Emerging: RAG pipelines, vector databases, agentic workflows, LLM integration Specializations: API Integration, zero-downtime deployment, real-time features, web design and redesign LET'S TALK —Usman

⭐️ Top Rated Plus - Top 1% of talent on Upwork 🕒 8000+ hours on Upwork ✅ 10+ years of experience ✅ 50+ enterprise projects delivered ✅ Excelling in delivering Fortune 500-scale projects. Azure & .NET Platform Architect for Production-Grade Systems I help SaaS companies and enterprise teams design, modernise, and stabilise Azure environments that scale securely. With 10+ years of experience and 8,000+ Upwork hours, I specialise in cloud architecture, DevOps automation, and high-availability .NET platforms. I specialise in: • Designing Azure cloud architectures for SaaS platforms • Building CI/CD pipelines (Azure DevOps & GitHub Actions) • Containerised .NET applications using Docker & AKS • Infrastructure as Code using Terraform • Production troubleshooting & performance optimisation • Secure multi-environment deployments (Dev / UAT / Prod) ⸻ Proven Results: • Reduced Azure infrastructure costs by up to 40% • Improved deployment reliability across Dev / UAT / Prod • Designed secure multi-tenant SaaS architectures on Azure • Stabilised production systems handling high-traffic workloads I don’t just build applications — I design platforms that scale. ⸻ What I Can Help You With ✔ .NET Core / ASP.NET Core Web APIs ✔ Microservices architecture on Azure ✔ Azure App Services / Azure Functions / Container Apps ✔ Azure Kubernetes Service (AKS) ✔ Azure SQL / Cosmos DB ✔ Azure networking (VNets, NSGs, Private Endpoints) ✔ DevOps automation & release engineering ✔ Cost optimisation & cloud ⸻ Typical Clients Hire Me To: • Fix broken Azure environments • Design production-ready cloud architecture • Implement CI/CD best practices • Migrate legacy .NET apps to Azure • Improve deployment reliability • Reduce cloud spend If you are building a serious SaaS product or need an Azure expert to stabilise production — let’s talk

Born in 2003 with a rank of 70 in the 2022 national mathematics entrance exam, I have a strong passion for the world of security, especially in implementing security within cloud-native and DevOps-driven environments. Alongside my engineering background, I have extensive professional experience in penetration testing, red teaming, and bug bounty, identifying vulnerabilities across a wide range of systems—including large, well-known platforms such as Snapchat—while working with some of the best teams and organizations. I am highly proficient in Kubernetes and its ecosystem, with solid experience in designing, deploying, hardening, and operating production-grade clusters. I have worked extensively with GitLab CI/CD, Jenkins, and ArgoCD to build automated pipelines, supported by configuration management and orchestration using Ansible and AWX. In cloud and infrastructure, I have hands-on experience with AWS, GCP, Terraform, and observability stacks like Prometheus and Grafana. For access control and secrets management, I use Teleport, Vault, LDAP, and Passbolt to enable strong identity and access governance. I also work with centralized logging and monitoring platforms such as ELK/Elastic Stack, Splunk, Redash, and Sentry, alongside storage and data technologies like PostgreSQL, ScyllaDB, MinIO, Kafka, and JFrog Artifactory. I have also gone deep into building and operating SOC infrastructures, integrating SIEM platforms (ELK/Elastic, Splunk), endpoint and network detection tools, and threat-intelligence feeds. With a strong background in penetration testing and red teaming, I can accurately identify organizational threats end-to-end, perform targeted offensive testing myself, and validate those findings within the SOC layer to ensure comprehensive detection and response coverage. I actively work with SOAR platforms and automation playbooks, combining them with AI-driven threat detection to accelerate investigation, response, and remediation. This combination of offensive security experience, SOC engineering, and DevOps expertise enables me to secure complex Kubernetes and cloud environments while ensuring they remain scalable, observable, and resilient against modern threats.

£20M+ fundraised. 30K+ users. 80K+ downloads. 4.5K GitHub stars. 3 revenue-generating AI SaaS products. 100% Job Success on every Upwork contract. Top 2% on Upwork. I'm the AI full-stack developer you hire when your project needs to actually work in production. So if you’ve got an idea, let’s bring it to life and make it something that actually works and scales! "Highly recommend working with Okafor. Very responsive and knowledgeable, and I'll be working with him on future projects." Most AI freelancers can build a chatbot. I built the systems underneath: the RAG pipeline that retrieves the right context in under 200ms, the AI agent workflow that reasons across five tools before responding, the voice AI that answers a tenant's call in 600ms flat, and the full-stack SaaS that serves thousands of paying users without falling over. A few things I've built that you can verify: → Felicity (Lightwork AI): LLM-powered voice + chat AI assistant for property management. Hybrid RAG, real-time VoIP at 600ms p95 latency, WhatsApp API integration. The company raised £20M+ and was shortlisted for a UK PropTech Award. I was the founding AI engineer. → FPL Oracle: AI chatbot and sports assistant powered by LangGraph, MCP servers, and GPT. 80% of users rank in the top 10K out of 13million players globally. Currently earning revenue ($1K MRR). → SnapFile: AI document management with OCR, embeddings, and retrieval serving 30K+ users. REST API integrations with Sage, Xero, QuickBooks, Google Drive, and Dropbox. Built with React, Node.js, and PostgreSQL. → DialogFlux: Enterprise multi-tenant communication platform. Omnichannel inbox (WhatsApp, SMS, email, voice), AI-powered sentiment analysis, real-time WebSocket dashboards. Processes millions of messages. Built with Python, TypeScript, and Redis. → Databricks (contract): Built autonomous browser automation agents using LangGraph + Puppeteer for compliance research and web scraping. Improved pricing accuracy by 11%, cut manual research time by 45%. Tracked with MLflow. → Open Source: My machine learning image restoration project earned 4,400+ stars on GitHub, 80K+ downloads, and has been cited in 50+ publications. Top 10 ML project on GitHub in 2022. Built with Python, PyTorch, and TensorFlow. What I build for clients: AI agents and LLM systems: multi-step reasoning with LangChain, LangGraph, MCP, OpenAI, GPT, Claude, Gemini, and Hugging Face. AI chatbot development for web, mobile, and WhatsApp. RAG pipelines with FAISS, Pinecone, and vector databases. Voice AI with Twilio, WebRTC, and real-time streaming. Full-stack development: React, Next.js, Node.js, NestJS, Python, TypeScript, GraphQL and REST APIs. PostgreSQL, MongoDB, Redis. SaaS platforms, dashboards, marketplaces, and multi-tenant apps. Automation and integrations: workflow automation with n8n, Make, and Zapier. Stripe, HubSpot, Notion, Slack, Airtable, and DocuSign integrations. Browser automation and data extraction at scale. DevOps and deployment: Docker, AWS, Vercel, CI/CD pipelines, Terraform, and GitHub Actions. I don't just write code for clients. I run 3 of my own AI products with paying users. That means I think about retention, not just features. Revenue, not just releases. Uptime, not just upvotes. How I work: I respond within an hour. I scope before I start. I ship weekly, not monthly. Docs and post-launch support are standard. I currently take on 2-3 projects at a time to give each one the attention it deserves. MSc in Artificial Intelligence (University of Surrey). Former Research ML Engineer at Databricks. Founding AI Engineer at Lightwork AI. Open source contributor to TensorFlow, PyTorch, and Ivy. Click "Invite" or send me a message with your project details. I'll reply with initial thoughts and a rough scope within an hour.

I’m a certified Cloud Engineer who builds automated, secure, and cost-efficient AWS infrastructure. From setup to deployment, I make the cloud work for you. Extensive experience with Infrastructure as Code, CI/CD pipelines, Bash & Python scripting Certified in AWS (SysOps, Architect) and Terraform Clear comms, quick turnarounds, zero fluff Let’s build something smart, scalable, and bulletproof.

For founders and early-stage startups: I deliver complete, multi-tenant platforms with real users, real data, and real revenue potential. Architecture, cloud setup, databases, role-based access, AI/chat search, payments, admin portals - all production-ready from day one. No throwaway prototypes. Everything ships ready to scale. For scaling companies: Seven years of DevOps experience across Finance, Web3, and Data Analytics. Kubernetes platforms, cloud migrations, and build environments for growing engineering teams. What sets me apart is that I do both. Most MVP developers hand you something that breaks at scale. Most DevOps engineers won't touch product development. I bridge that gap by building MVPs on solid foundations so you're not rewriting everything six months later. What you get: - Zero upfront infrastructure costs - Pay-per-user scaling as you grow - Multi-tenant architecture with role-based access - Cloud infrastructure (AWS, GCP, Azure) - AI/chat search integration - Direct debit Payment processing - Admin portals and dashboards - Full source code ownership - Self-hosting support and documentation Infrastructure & DevOps skills: Cloud: ControlPlanne, AWS, Azure, GCP, DigitalOcean, Hetzner, on-premise Orchestration: Kubernetes, Rancher, Docker Swarm, OpenShift IaC: Pulumi, Terraform, CloudFormation CI/CD: Jenkins, Helm, GoCD, Github Actions, Tilt, Earthly Databases: PostgreSQL, MySQL, MongoDB, Elasticsearch, MSSQL Languages: Python, TypeScript, JavaScript, Go, Bash, PowerShell Recent achievements: - Re-engineered SaaS architecture to Kubernetes microservices, cutting software spend by 40% - Built automated multi-cloud disaster recovery with Terraform - Delivered end-to-end MVP platforms for B2B marketplace taking them from £0 to £3M valuation in 3 months - Product Owner and Scrum Master for Agile mobile app development Certifications: - Kubernetes Certified Administrator (CKA) - Kubernetes Certified Application Developer (CKAD) - AWS Certified Developer Associate - Agile Certified Practitioner - 1st Class Honours, Electronic Engineering & Cybernetics