Full-time engineer + freelance builder
Full-stack & AI engineer building usable automation systems.
I am Yogeshwaran R. I build document automation, AI workflows, FastAPI backends and React/Angular interfaces. I also build Lendbook, my freelance lending application.
Python · FastAPI · gRPC · Postgres · LangGraph · React · Angular · TypeScript
- Currently building
- Org + Freelance
- Freelance product
- Lendbook
- Backend to UI
- Full-stack
Version 2 focus
Practical engineering for messy business workflows.
01
Document automation and extraction workflows
02
FastAPI, gRPC and PostgreSQL backend systems
03
React and Angular dashboards for real operations
04
Practical AI features with LangGraph, LangChain and RAG
What I build
Document & data pipelines
Ingestion, OCR, extraction, validation. Getting structured, trustworthy records out of whatever format they arrive in.
AI features that hold up
Agents, retrieval and LLM integrations built to be repeatable and affordable, with the cost and failure modes understood before launch.
Backend & API systems
Python and FastAPI services, REST and gRPC, Postgres schema design, background jobs, queues and real-time streams.
Full-stack delivery
React and Angular front ends on top of it all — dashboards, review workflows, admin surfaces and live status.
Selected projects
Lendbook is my freelance application. The other selected projects reflect the kind of systems I build in my current organization.
Experience
2025 — Present
Full-stack & AI Engineer
Product company (B2B SaaS)
Currently working in an organization while also building freelance applications. My day-to-day work covers document intelligence, finance automation, backend services and the interfaces on top of them.
- Python
- FastAPI
- LangGraph
- Postgres
- React
- Angular
Freelance
Lendbook & independent builds
Remote — worldwide
Building Lendbook as my freelance application and taking on practical full-stack work where I can own the product from idea to shipped workflow.
- Lendbook
- Full-stack
- Remote
Stack
Backend
- Python
- FastAPI
- gRPC
- REST
- Celery / queues
AI
- LangChain
- LangGraph
- RAG
- Vision / OCR
- Pydantic
Data
- Postgres
- Neo4j
- Redis
- pgvector
- SQLAlchemy
Frontend
- React
- Angular
- TypeScript
- Tailwind
- SSE
Platform
- Docker
- GCP
- AWS
- Keycloak
- CI / CD
Have something to build?
Available for freelance and contract work, remote. Tell me what you are trying to ship and I will tell you honestly whether I am the right person.