Patrick B.
Senior Product Engineer Rust/ TypeScript | AI-powered Products & SaaS
⏱ Reply within 24 hours, 24/7 ⭐⭐⭐⭐⭐ Looking for a Senior Product Engineer (Rust, TypeScript, React.js, Next.js, NestJS, React Native) who builds AI-powered SaaS products, orchestrates AI agents, and ships MVPs in weeks, not months? You're in the right place. My motto is "Don't just code". I bridge product, design, and engineering to create captivating experiences - and today, that means applications where AI does real work for your users, not a chatbot bolted on as an afterthought. ➤ NEED AN MVP FAST? AI-assisted development has changed what one senior engineer can ship. I can deliver a working MVP in 1-2 weeks, provided that: ✓ The scope is clear and limited to the core features (we define this together before starting) ✓ The resources are ready: designs or references, API keys, content, third-party accounts ✓ The stack is within my expertise (see below) Projects with heavy integrations, complex business logic, or compliance requirements take longer - and I'll tell you that upfront. I'd rather give you a realistic timeline after a short scoping call than a fast one I can't keep. ➤ AI & AGENTS - WHAT I'VE ACTUALLY SHIPPED ✓ Ever Teams: principal contributor to an AI-powered collaboration platform (Next.js + NestJS) - AI productivity workflows, Rust internal APIs, AI training logic on the backend ✓ Memnox: AI engineering platform giving development teams persistent project memory - built the React/TypeScript interfaces for AI-assisted workflows ✓ HIÜRD: AI-ready services marketplace - React Native mobile app, Next.js website, and an AI job-dictation feature ✓ AI Training Pipeline: modular Rust system for distributed model training (data loading, batching, parallel job execution) What I can do for you: ✓ AI-native products: assistants, copilots, automated workflows, document processing, "chat with your data" ✓ AI-boosted products: adding LLM features to an existing app (search, summarization, classification, generation) ✓ AI agent orchestration: multi-step agents, tool use / function calling, agents connected to your APIs and databases ✓ Custom training pipelines, RAG, and prompt engineering so the AI behaves reliably on your data ✓ Production-ready AI: cost control, guardrails, fallbacks, monitoring - a demo and a product are two different things ➤ MY SKILLS 🡒 - AI: OpenAI API, LangChain, Microsoft Copilot, custom AI training pipelines (Rust), AI agents, AI-assisted development (Cursor, Claude Code) 🡒 - Backend: Rust (Actix Web, Tokio, Diesel), NestJS, Express.js, Laravel, REST APIs 🡒 - Frontend: React.js, Next.js, Vue.js, Angular, Leptos (Rust/WebAssembly), Tailwind CSS, Framer Motion, GSAP, Three.js 🡒 - Mobile & Desktop: React Native (Android/iOS), Electron.js 🡒 - Database: PostgreSQL, MySQL, SQL Server, SQLite, MongoDB 🡒 - Cloud & DevOps: Docker, AWS (EC2, S3), DigitalOcean, Vercel, GitHub Actions, CI/CD 🡒 - Testing: Jest, Cypress, Rust unit & property-based testing 🡒 - Design: Figma, Adobe XD, UX flows, design systems, Blender, Spline ➤ HOW I WORK ✓ A short scoping call first, so we agree on features, timeline, and what's out of scope before any code is written ✓ Clear and frequent communication throughout the project ✓ Clean code, unit testing, reusable component libraries, CI/CD ✓ Help with deployment and continued support after delivery 6+ years shipping production SaaS for startups and remote teams. I also modernize legacy apps (React to Next.js, Figma to a full-stack app), build complex reporting systems, and automate tasks and data scraping. Fluent in French and English. Let's discuss how I can bring your idea to life or support your ongoing project. Feel free to reach out! | Software Development | AI | LLM | RAG | AI Agent | Agentic | Multi-Agent | AI Automation | AI Integration | AI-Native | Copilot | Chatbot | Prompt Engineering | Machine Learning | AI Training | LangChain | OpenAI | Cursor | Claude Code | Rust | Actix | Leptos | WebAssembly | Node | Typescript | React | Next.js | NestJS | React Native | Tailwind | SaaS | MVP | Rapid Prototyping | Startup | Product Design | UI | UX | Design System | Figma | Prototyping | Mobile Apps | Desktop | Electron | Full-Stack | Frontend | Backend | Architecture | Roadmap | Scale | QA | Testing | Docker | AWS | Cloud | DevOps | CI/CD | Serverless | Database | PostgreSQL | CMS |
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $12k
Billed in all: $41,520$42k
$12k in the last 6 months
Across 5 contracts
Earnings, last 30 days
Skill rankings: Top 6% in Web Design
Ranked by MRR among everyone on Upwork with the skill.
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