Gaurav Chaudhary
Immediate Joiner · Open to Work
2.3+
Years Exp.
5M
Daily Reqs
60%
P95 Latency Cut
8.9
NIT CGPA
Software Development Engineer

Gaurav
Chaudhary

Backend engineer specializing in high-throughput distributed systems, microservices architecture, and performance engineering. From 5M req/day rate-limiters to billing engines serving 1M+ customers — I build systems that scale.

Go Java Python Kubernetes Kafka gRPC Redis MySQL Spring Boot Microservices Django C++
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01

About Me

I'm a backend-focused Software Engineer with 2.3 years building production systems at scale. At Razorpay, I owned a rate-limiting service that guards 5M+ daily API requests. At Amdocs, I ensured billing correctness for 10M+ Vodafone Germany customers.

I obsess over latency, reliability, and clean system boundaries. Whether it's decomposing a monolith into clean proxy layers, tuning connection pools to halve P95 latency, or integrating distributed tracing for faster incident resolution — I bring an engineering-manager mindset to an IC role: I think in outcomes, not just tasks.

I'm currently exploring opportunities at SDE-1/2 level where I can drive meaningful backend work on systems that handle real scale. I'm also actively sharpening my skills in system design, distributed systems, and ML integration.

⚡ Reduced P95 API latency from 250ms → 90ms via MySQL connection pool tuning at 50k RPS
🛡 Automated billing charge classification, cutting manual interventions by 60%
🔍 Integrated Coralogix distributed tracing → 30% faster root-cause detection
🏗 Decomposed API monolith into proxy layer, simplifying workflows and reducing coupling
Java / Spring Boot90%
Python85%
Go55%
SQL / PostgreSQL / MySQL80%
Data Structures & Algorithms75%
System Design (Distributed)65%
Kubernetes / Docker55%
Kafka / gRPC60%
Django / Flask65%
02

Work Experience

Apr 2025 – Oct 2025
Razorpay
SDE – I Fintech · Payments High-Scale
  • Owned the API gateway rate-limiting service handling 5M+ daily requests — redesigned the internal alerting pipeline and integrated Coralogix distributed tracing, achieving 30% faster mean-time-to-detect (MTTD) on production incidents.
  • Architected a canary rollout mechanism for the rate-limiter, enabling zero-downtime deploys with gradual traffic shifting and automated rollback on SLO breach — eliminating deployment-day incidents.
  • Decomposed the API monolith into a clean proxy layer, isolating auth, routing, and rate-limit concerns — reduced inter-service coupling and cut average deployment blast radius by ~40%.
  • Diagnosed and resolved MySQL connection pool exhaustion under burst traffic (5k RPS peaks) through pool-size tuning, connection lifetime adjustment, and query analysis — dropped P95 API latency from 250ms → 90ms.
  • Built an end-to-end integration test suite wired into GitHub Actions CI, increasing release confidence and catching 3 critical regressions pre-production in the first quarter.
  • Designed and published a customer-listing SDK for the internal CDP (Customer Data Platform) service — reduced onboarding time for consuming teams from 2 weeks to 2 days.
Go GORM gRPC Kubernetes Kafka Redis MySQL Coralogix GitHub Actions
2023 – Apr 2025
Amdocs
SDE – I Telecom BSS Mission-Critical
  • Core contributor on Vodafone Germany's BSS billing platform — debugged and refactored the Finance BAN module responsible for charge computation accuracy for 10M+ subscribers.
  • Automated charge classification logic in the billing engine using rule-based scripting, reducing manual interventions by 60% and improving SLA resolution time by 30%.
  • Resolved a P0 production outage where UPS transactions were silently failing due to a missing UPS-REQ-ID in transaction payloads — restored service for hundreds of impacted customers within 4 hours of escalation.
  • Fixed a dual SIM allocation race condition and ultracard aging bug that caused intermittent billing discrepancies — root-caused via log correlation across distributed COBOL and C++ processes.
  • Wrote Unix automation scripts that reduced recurring support ticket volumes by 25% by auto-healing known failure patterns in the nightly batch billing cycle.
C++ COBOL Unix Scripting Tuxedo Citrix Python
Jan 2023 – Jul 2023
WSPL Pvt. Ltd.
Python Developer Intern PropTech
  • Designed and built a user activity history API for the TenantOwner platform, improving transparency and reducing support queries by providing self-service audit trails.
  • Integrated Swagger/OpenAPI documentation with Django REST Framework — reduced API onboarding time for frontend teams and improved developer experience.
  • Designed a lightweight algorithm to decode cryptocurrency hash values for transaction verification, improving data integrity checks in the payment workflow.
Django Python Swagger REST API
Jun 2021 – Dec 2021
Sematic Web India
Python Developer Intern HealthTech
  • Built the Dashboard REST API for the inCovid19 website — a public health portal aggregating COVID-19 data — using Django and ElasticSearch for fast full-text query performance.
  • Gained practical experience with GraphDB for semantic data modeling and SPARQL querying of health ontologies.
Django Python GraphDB ElasticSearch
03

Education

Master of Computer Applications (MCA)
National Institute of Technology, Kurukshetra
NIT Kurukshetra
Jul 2020 – May 2023
CGPA: 8.9 / 10
Bachelor of Computer Applications (BCA)
MLK PG College, Balrampur
University of Lucknow
2016 – 2019
79%
04

Technical Skills

Languages
Go Java Python C++ C COBOL SQL Unix Shell
Frameworks & Libraries
Spring Boot Django Flask GORM gRPC REST API Swagger
Databases & Messaging
MySQL PostgreSQL Redis Kafka ElasticSearch GraphDB
DevOps & Infrastructure
Kubernetes Docker GitHub Actions CI/CD Coralogix Tuxedo
Architecture & Patterns
Microservices System Design Design Patterns Rate Limiting Canary Deployment Distributed Systems
Currently Learning
ML Fundamentals LLM Integration Data Engineering AWS Advanced DSA
05

Projects

🦠
Covid Data Extractor — Asia

Engineered a real-time web scraping pipeline to aggregate and normalize COVID-19 statistics across Asian countries, with structured data output and automated scheduling.

View Source
🛒
Full-Stack E-Commerce Platform

Built a production-grade e-commerce prototype with Angular frontend and Spring Boot backend — featuring product catalog, cart management, order tracking, and JWT auth.

View Source
🏠
inCovid19 Dashboard API

Designed and implemented the REST API backend for a public health portal, integrating Django with ElasticSearch for fast querying of live COVID-19 semantic data.

View Source
06

Certifications

🔒
Ethical Hacking Certification
Download Certificate
💻
Mainframe COBOL Certification
Download Certificate
🏗
Java Design Patterns Certification
Download Certificate
🏗
NASSCOM Certified
Download Certificate
07

Contact

Let's build something
great together.

Open to SDE-I / SDE-II roles in backend, platform, or distributed systems engineering. I'm an immediate joiner based in Uttar Pradesh, India — open to relocation or remote.

Primary Email gauravchaudhary.hck@gmail.com
Secondary Email reverse454@gmail.com
Phone (Primary) +91 8090161875
Phone (Secondary) +91 9794113574
Location Siddharth Nagar, Uttar Pradesh — 272207, India
Available for Interviews

What I bring to your team

Beyond the technical stack, I bring an ownership mindset — I've operated on systems where downtime costs real money and correctness issues affect millions of users.

  • Production-hardened experience with high-throughput, low-latency systems
  • Track record of measurable impact (latency, reliability, automation)
  • NIT Kurukshetra (top 3 NIT) — strong CS fundamentals
  • Experience across Fintech (Razorpay) and Telecom BSS (Amdocs)
  • Immediate availability — no notice period
  • Comfortable with ambiguity; can ramp up fast on new stacks
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