Harsh Ranjan - hackathons, internships, achievements collage
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BACKEND ENGINEER & CS STUDENT

Building systems
that scale.

Shipping production APIs at scale, winning national hackathons, and exploring the intersection of distributed systems and AI.

Achievements
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ABOUT

A backend engineer who ships fast and takes ownership.

I'm a CS student at Punjab Engineering College, Chandigarh, currently interning at Stable Money — shipping production Java/Spring Boot APIs on a platform serving 10M+ users. Beyond the day job I win hackathons, build AI agents, and have 300+ LeetCode problems solved. I thrive where backend systems meet real-world impact.

EXPERIENCE — SWE RESUME

Where I've been building.

Stable Money

Stable Money

Software Engineering Intern

Dec 2025 — Present
  • Shipped 5+ production REST & gRPC APIs in Java, Spring Boot; APIs serve live transaction flows on a 10M+ user platform.
  • Designed and shipped an agents portal replacing manual Excel workflows — automated referral tracking, AUM exploration, and conversion metrics; deployed to production and actively used daily across 400+ agents.
  • Partnered with Finance, Marketing, and Founder's Office to ship 10+ production dashboards on the internal tool.
PGI Chandigarh

PGI Chandigarh

Backend Developer(Govt. of India Collaboration)

Oct 2025 — Dec 2025
  • Built REST APIs and a data ingestion pipeline for an AI-assisted Glaucoma & IIH detection system; backend processed clinical imaging data achieving 75% diagnostic accuracy in hospital trials.
  • Designed infrastructure to serve medical imaging data to clinician-facing workflows, deployed within PGI under a Government of India collaboration.

HIGHLIGHTS

From the field.

Hackathon wins, internship moments, and milestones worth sharing.

PROJECTS — SWE RESUME

Things I've built.

DeFAI MCP screenshot

AI-Native DeFi Agent

AI-NATIVE DEFI AGENT

DeFAI MCP

Unified 5+ DeFi functionalities (Yield, Swaps, Arbitrage) into a single MCP server exposing 19 typed API endpoints; live on Railway handling testnet on-chain operations.

  • 19 MCP tools enabling Claude/GPT to execute real on-chain DeFi operations
  • Autonomous arb bot with 30s execution loop across 3 DEXs
  • AES-256-GCM encrypted per-user credential isolation
PythonMCPBNB ChainERC-4337REST API
GenAI Call Agent screenshot

AI Appointment Booking System

AI APPOINTMENT BOOKING SYSTEM

GenAI Call Agent

Built an AI voice agent using Python and Twilio achieving 95% booking success rate; reduced scheduling response time to under 2 seconds via systematic prompt engineering.

  • 95% booking success rate with under 2s response time
  • Conversation state machine handling rescheduling, cancellations, ambiguous inputs
  • End-to-end validated via Postman and Ngrok tunneling
PythonTwilioGroq APINgrokREST API

TECHNICAL SKILLS — SWE RESUME

Tools of the trade.

Languages

Languages

C++JavaPythonJavaScriptTypeScriptSQL
Frameworks

Frameworks

Spring BootReact.jsNode.jsNext.jsExpress.jsREST APIsgRPC
Databases

Databases

PostgreSQLMySQLMongoDBRedisKafka
Cloud & DevOps

Cloud & DevOps

AWSAzureKubernetesDockerJenkins CI/CDGrafanaGitGitHub Actions
AI & ML

AI & ML

LLMsGenerative AILangChainRAGAI AgentsMCPTransformers
CS Core

CS Core

DSAOOPDBMSSystem DesignOperating SystemsAgile/Scrum

CONTACT

Let's connect.

Currently based in Chandigarh, India. Open to opportunities, collaborations, and conversations about backend systems, AI, and building things that matter.

SAY HELLO
Harsh Ranjan — Chandigarh, India