Yash M.

Full Stack + AI Engineer | 9+ Yrs | RAG, LLM Integration, SaaS, Mobile

I've been building software since 2017. These days most of my work is putting AI into products that already have real users, not building demos. I've worked on SaaS products in healthcare, fintech, edtech and enterprise, usually from the first commit through to launch and beyond. I'll tell you if something you've asked for will take three weeks and not be worth it. Most clients find that useful. 🤖 AI and LLM work (where most of my time goes right now) ✅ RAG pipelines on AWS with Bedrock, embeddings and vector search. Getting retrieval to return the right chunk is most of the job. ✅ OpenAI SDK integration — structured outputs, function calling, streaming, and keeping token costs sane. ✅ Gemini Flash and Pro for OCR and document extraction. Invoices, forms, IDs, scanned PDFs, at volume. ✅ Claude Code and AI-assisted development. It makes me faster, and you get that speed. 🏗️ Architecture ✅ Monolith, modular monolith or microservices, picked for your team size and stage. Most early products don't need microservices and I'll say so before you spend money on one. ✅ SAGA pattern (orchestration and choreography), outbox pattern, idempotent handlers, eventual consistency. ✅ Event-driven systems with queues and pub/sub. ✅ Multi-tenant SaaS design. ✅ Breaking up monoliths that outgrew themselves, without stopping feature work while it happens. ⭐ Track record 🏆 Upwork Certified JS Developer 💯 100% Job Success Score 💰 $90,000+ earned ⏰ 1900+ hours ⭐ All 5-star ratings 🛠️ Stack 💻 Frontend: React, Next.js, Angular. TypeScript, NgRx, RxJS, Redux. ⚙️ Backend: Node.js with Express or NestJS, Drizzle ORM, Prisma, TypeORM. Also C#/.NET Core and Python (FastAPI). 📱 Mobile: React Native. Paywalls with RevenueCat and Superwall, analytics with PostHog and Firebase. I handle App Store and Play Store releases too. 🗄️ Databases: PostgreSQL, MSSQL, MySQL, NoSQL. Stored procedures, triggers, functions. ☁️ AWS: S3, Lambda, RDS, EC2, EKS, Bedrock, CloudWatch, CloudFront, ACM, Cognito. 🔷 Azure: App Services, Blob Storage, Functions, Logic Apps, Entra ID, SQL Database, Container Apps. 📦 Infrastructure: Terraform, AWS CDK. 🔧 DevOps: Docker, Kubernetes, CI/CD, GitLab. 🔌 Realtime: WebSockets, SignalR. 🤝 Getting started Happy to start with a small paid task so you can see how I work before committing to anything bigger. Most people stay on after that. Message me with what you're building and I'll tell you if I'm a good fit.