Available · Open to roles

Aadhaar Goel

Backend Engineer

IIT Guwahati· CGPA 8.3 · Class of 2027India

CS student at IIT Guwahati building production-grade backend systems — fast, reliable, and built to scale.

GitHub
Currently at
Physics Wallah
Backend Dev · Bengaluru
LeetCode Max Rating
1837
Top algorithmic problem solver
IIT Guwahati
8.3 CGPA
B.S. DS & AI · Class of 2027
> GET /api/transactions
HTTP/1.1 200 OK
X-Response-Time: 28ms

{
"status": "success",
"data": {
"userId": "usr_8f3j2k",
"balance": 2847.50,
"currency": "INR"
}
}

> POST /api/transfer
HTTP/1.1 202 Accepted
X-Trace-ID: txn_9k2p...

1500+
DSA problems solved
8.3
CGPA at IIT Guwahati
40%
API latency reduced at PW
16+
Client projects delivered
Philosophy

Good engineering is invisible. You only notice it when it breaks — so I build systems that don't.

Expertise
01

Backend Architecture

Modular monoliths and microservices in Node.js, Spring Boot, and TypeScript — built for maintainability and production scale.

02

DSA & Problem Solving

1500+ problems solved. LeetCode max 1837 · Codeforces max 1409 (Specialist).

03

Performance

Redis-backed BullMQ queues, Kafka event streams, ORM-level query optimisation. 40% latency reduction at Physics Wallah.

04

Auth & Security

Centralised JWT + RBAC middleware, API gateway patterns, secure multi-tenant system design.

05

Distributed Systems

Event-driven architecture with Apache Kafka, gRPC inter-service communication, fault-tolerant microservices containerised with Docker Compose.

TypeScriptJavaNode.jsSpring BootExpress.jsPrismaBullMQgRPCREST APIsTypeScriptJavaNode.jsSpring BootExpress.jsPrismaBullMQgRPCREST APIs
PostgreSQLMongoDBRedisApache KafkaDockerAWSLinuxGitSwaggerPostgreSQLMongoDBRedisApache KafkaDockerAWSLinuxGitSwagger
CQRSMicroservicesJWTRBACEvent-DrivenDSASystem DesignNetworkingOS FundamentalsCQRSMicroservicesJWTRBACEvent-DrivenDSASystem DesignNetworkingOS Fundamentals
Stack

Tools I ship with.

Languages
TypeScriptJavaC++SQLNode.js
Frameworks
Spring BootExpress.jsPrismaBullMQgRPCREST
Databases
PostgreSQLMongoDBRedisApache Kafka
Infrastructure
DockerAWSGitJWT / RBACSwagger
Process

How I work.

01

Discover & Scope

I start with the problem, not the solution. Requirements get mapped to data flows, edge cases surface early, and architecture decisions are made before a single line of code is written.

02

Architect & Design

Clean data models, clear service boundaries, explicit API contracts. Every system is designed to be understood by the next engineer — not just to work today.

03

Build & Optimise

Typed, modular code with consistent patterns. Every bottleneck gets profiled — slow queries, missing cache layers, blocking I/O — and fixed at the root cause.

04

Ship & Document

Production readiness means more than passing tests. Swagger docs, structured onboarding notes, and monitoring are in place before the first deploy.

Experience

Where I've shipped real work.

PW (PhysicsWallah)
PW (PhysicsWallah)
Current
Feb 2026 — Present
Bengaluru · On-site
Backend Developer Intern

Architecting a modular monolith backend using TypeScript and Express, reducing debugging latency and improving API reliability across the platform.

  • 40% reduction in debugging latency by architecting a modular monolith with TypeScript and Express
  • 30% faster API response times via Prisma ORM and structured schema design
  • 50% reduction in developer onboarding time by upgrading and standardising Swagger API documentation
  • Hardened system security with a centralised RBAC authentication middleware across all backend services
Summentor Pro Business Consultant
Summentor Pro Business Consultant
Current
Apr 2026 — Present
Bengaluru · Remote
Tech & Growth Intern

Driving funnel automation and back-end operations to accelerate growth and streamline data collection pipelines.

  • 12% increase in lead conversion through real-time analytics dashboards and Mixpanel funnel tracking
  • 20 hours/month saved by automating user outreach via WhatsApp and Email API integrations
  • 35% system throughput improvement by decoupling long-running tasks with a Redis-backed BullMQ queue
Skill Turtle
Skill Turtle
Current
Jan 2026 — Present
Bengaluru · Remote
PCD Mentor

Mentoring students in competitive programming and problem-solving as part of the PCD (Placement & Competitive Development) programme.

  • Guided 30+ students through DSA problem sets, mock contests, and interview preparation
  • Delivered public speaking sessions to improve technical communication for placement readiness
  • Curated structured problem roadmaps tailored to individual student skill levels
E-Drives
E-Drives
2024
Remote
Freelance Backend Engineer

Re-engineered the core booking and payment systems for a fleet management platform, improving reliability and automating financial workflows.

  • 15% decrease in booking failure rates by re-engineering the vehicle swap and booking lifecycle state machine
  • 20% boost in payment completion via a partial payment engine and flexible billing architecture
  • Automated financial reporting, reducing manual accounting effort by 15 hours/week via real-time dashboards
FAQ

Common questions.

Answers to what hiring managers and clients usually ask before reaching out.

Get in Touch

Let's Build.

I'm open to senior/staff backend roles and select freelance projects. If you're building something ambitious, let's talk.

© 2025 Aadhaar Goel · Built with Next.js & Framer Motion