Sumeya S.

𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 · 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 · 𝟱.𝟬★ · Available during US, UK & AU business hours · Available 30+ hrs/week I’m a Senior Full-Stack & AI Engineer specializing in Next.js, TypeScript, AI/LLM applications, and production-grade automation. I help startups and businesses build AI-powered products, internal tools, SaaS platforms, intelligent workflows, and integrations that are reliable, maintainable, and ready for real users. My work spans both traditional software engineering and modern AI-native development — from designing scalable Next.js applications and backend APIs to building LLM agents, RAG systems, workflow automation, and AI-powered business processes. What I can help you build → Full-stack SaaS applications → Next.js & React applications → AI-native web applications → LLM-powered products and features → AI agents and agentic workflows → RAG / knowledge-base systems → AI chatbots and assistants → Internal business tools → Workflow and business automation → API integrations and webhooks → CRM and sales automation → Data scraping and processing → Document processing pipelines → Backend services and APIs Core Stack Full-Stack Development Next.js | React | TypeScript | JavaScript | Node.js | Python | FastAPI | PostgreSQL | MongoDB | REST APIs | GraphQL | Docker | Serverless AI & LLM Engineering OpenAI | GPT-5 | Claude | Gemini | LLM Integration | AI Agents | RAG | Embeddings | Vector Databases | Function Calling | Tool Calling | Prompt Engineering | Structured Outputs | AI Workflows AI-Native Development Claude Code | Cursor | Codex | AI-Assisted Development | Agentic Coding Workflows | BDD | TDD Automation & Integrations n8n | Make | Zapier | Airtable | Webhooks | OAuth | Microsoft Graph | Google APIs | HubSpot | Zoho | GoHighLevel | Third-Party APIs Data & Automation Python Automation | Playwright | Puppeteer | Selenium | BeautifulSoup | Apify | Web Scraping | Data Extraction | Data Processing How I work I don’t just connect tools together or generate code and hope it works. I focus on: • Clean, maintainable architecture • Production-ready implementation • Testing and edge cases • Existing codebase conventions • Reliable API and data integrations • Security and failure handling • Clear communication and documentation • Long-term maintainability I also work extensively with AI-native engineering workflows using Claude Code, Cursor, and Codex while keeping architecture, testing, code review, and engineering decisions human-controlled. Why clients work with me • Top Rated on Upwork • 100% Job Success Score • 5.0★ client feedback • Strong Next.js, TypeScript, Python, and AI background • Comfortable working across existing production codebases • Experience collaborating with US, European, Australian, and Asian teams • Available for long-term and ongoing engineering work What clients say 💬 “ Sumeya has been a solid full-stack engineer for our SaaS project. She ramps up fast, communicates clearly, and makes strong code design decisions—clean, reusable, and reliable implementations that match what we needed across Next.js, NestJS, and MongoDB. She also handled key integrations (including our notifications/alerts). Dependable and easy to work with” — Raphael, USA If you’re building a Next.js product, adding AI capabilities to an existing application, or need an engineer who can handle both the software and AI sides of the system, feel free to send me a message. Available for long-term contracts, full-time engagements, and ongoing product development