Python Backend · AI/LLM on AWS · Pune, India

I build production backends that put LLMs to work.

3+ years shipping FastAPI services, AWS infrastructure, and AI/LLM pipelines on Bedrock — for clients from Pune to Germany.

See the work Get in touch
FastAPI & REST APIs AWS Bedrock + LangGraph PostgreSQL · Docker
document-intelligence-pipeline.py
{ }IngestDocuments · S3
⠿Parse & ChunkPython pipeline
✦AWS BedrockLLM reasoning
⟲RAG + AgentsLangGraph
→DeliverREST API · RBAC
3+
Years freelance
6+
Products shipped
2
German clients
1
Springer paper
01 — Who I am

Backend engineer, AI-first.

Varun Jadhav — Python Backend & AI/LLM Engineer VJ
Varun JadhavPune, Maharashtra · India

I'm Varun — a Python backend engineer who likes the hard, invisible parts: clean APIs, well-modeled databases, and infrastructure that just runs.

Lately I've focused on bringing LLMs into real products — document-intelligence pipelines and agent systems built on AWS Bedrock, not demos. I've delivered end-to-end for international clients across health-tech, marketing, and BIM/SaaS, owning everything from the schema to the deployment.

Now I'm extending into data engineering — Databricks, PySpark, dbt, and Snowflake — building pipelines that turn raw data into something teams can trust.

Ships end-to-end

From requirements and schema design to AWS deployment and maintenance — solo or in small teams.

Owns the infrastructure

Sets up and runs AWS directly: S3, EC2, ECS Fargate, IAM — containerized with Docker.

Builds with LLMs

LangGraph agents, RAG, and document pipelines on Bedrock — production, not prototypes.

02 — Toolkit

What I build with.

Backend

PythonFastAPIREST APIsMicroservicesOOPData Structures

AI / LLM

AWS BedrockLangGraphRAGAI AgentsLLM PipelinesPrompt Engineering

Cloud & DevOps

AWS EC2S3ECS FargateIAMDockerCI/CDGitLinux

Databases & Data

PostgreSQLMySQLSQLDatabricksPySparkdbtSnowflake
03 — Selected work

Real products, real clients.

Most of this is client work under NDA, so the code stays private — here's what I built, the stack, and my role.

digifoot
Backend · Pipeline · Delivery owner
● Ongoing
AI-assisted foot-scanning & custom-insole app for a German health-tech client. Built the Python scan-processing pipeline and backend, wired up native iOS (Swift) and React Native, Stripe payments, and AWS S3. I own the repository and end-to-end delivery.
PythonSwiftReact NativeAWS S3DockerStripe
Code under NDA
AI-DD
AI / Data pipeline owner
AI Platform
AI-powered due-diligence platform. Designed and built an LLM document-intelligence pipeline on AWS Bedrock that ingests and analyzes large document sets to surface insights — with role-based access control and full audit trails.
PythonAWS BedrockLLM / RAGPostgreSQLDockerSQL
Code under NDA
Speecon
AI agent layer · 2-person team
AI / BIM SaaS
Production AI/BIM SaaS platform. I owned the AI agent layer — LangGraph agents running on AWS Bedrock, integrated with Autodesk Platform Services — alongside a PostgreSQL data model and AWS-deployed containerized services.
PythonLangGraphAWS BedrockAutodesk APSECS FargatePostgreSQL
Code under NDA
BesteHobby.de
Backend · APIs · Analysis
Web Platform
Affiliate marketing platform for a German client. Designed REST APIs and deployed 15 niche subdomain web pages on AWS EC2, integrated GA4 and ad-platform APIs, and produced a data-driven business case to guide paid acquisition.
PythonFastAPIReact / Next.jsAWS EC2PostgreSQLGA4
Code under NDA
Medical POS & Inventory

POS + inventory system for a medical/retail client — real-time stock, billing/invoicing, and sales dashboards.

PythonSQL / MySQLREST APIs
School Management System

Records, attendance, fees, and academic reporting with REST APIs and role-based access for administrators.

PythonMySQLREST APIs
Employee Productivity Tool

Productivity-analytics tool in Python and SQL. Work contributed to a research paper published by Springer (2024).

PythonSQLData Analysis
04 — Path

Experience.

Jan 2023 — Present
Python Backend Developer · Freelance
Self-Employed · Remote / Pune
  • Shipped FastAPI services and REST APIs for international clients across health-tech, marketing, and SaaS.
  • Integrated AI/LLM features on AWS Bedrock — LangGraph agents and document-intelligence pipelines.
  • Set up and ran AWS infrastructure (S3, EC2, ECS Fargate, IAM); containerized with Docker.
  • Designed and optimized PostgreSQL/MySQL schemas powering web and mobile apps.
Sep 2021 — Dec 2021
Backend Developer Intern
Wolfox Services Pvt. Ltd. · Kolhapur
  • Built Python web applications with backend and server-side logic.
  • Created RESTful routes and data processing integrated with MySQL.
05 — Credentials

Certifications & education.

▸ Certifications

  • Master Azure Databricks for Data Engineers — Udemy
  • Databricks Fundamentals — Databricks Academy
  • SQL Developer — Infosys Springboard / Skillsoft
  • AWS Solutions Architecture Job Simulation — Forage
  • Deloitte Data Analytics Job Simulation — Forage
  • Power BI — Skill Course

▸ Education

  • B.E. Computer Engineering
    SPPU, Pune · 2023
  • Diploma, Computer Engineering
    ICRE, Gargoti
Publication

Employee Productivity Monitoring Tool — Analytics in Teleworking

Published by Springer, 2024 · Journal of Information and Computational Science

06 — Let's talk

Building something that needs a backend?

Open to backend, AI/LLM, and data-engineering roles — full-time or contract. Based in Pune, comfortable remote.

Email me LinkedIn
varunrjadhav24@gmail.com +91 77448 86332 Pune, Maharashtra