Sachin Kumar Yadav

About Me

👋 Hey! I'm Sachin, a Backend Developer currently working as SDE-1 at Angel One, specializing in Golang, Spring Boot, and AWS. I love crafting efficient, scalable solutions and diving deep into system architecture.

I'm a proud graduate of IIIT Lucknow (B.Tech in IT, CGPA: 8.46). Previously gained valuable experience at Acko and MAQ Software. Competitive programming enthusiast with CodeChef 5★ (2046) and Codeforces Specialist (1561). My daily workflow revolves around Arch Linux, Neovim, and Hyprland - because productivity meets minimalism.

💼 SDE-1 at Angel One | Go, Spring Boot, AWS
🎓 B.Tech in IT from IIIT Lucknow (CGPA: 8.46)
⭐ CodeChef 5★ (2046) | Codeforces Specialist (1561)
🧰 Passionate about system design & distributed systems
🛠️ Daily driver: Arch Linux + Neovim + Hyprland

"Code. Break. Fix. Learn. Repeat."

🏆

1st Place

IIIT Lucknow Hackathon

⭐

Rank 60

CodeChef Starters 48

Technical Skills

Backend Development

Golang & Java
Spring Boot & Python
RESTful APIs
Microservices Architecture
PostgreSQL

System Design

Distributed Systems
Scalable Architecture
AWS (Lambda, Step Functions)
Data Pipeline Design
Message Queues

Competitive Programming

C++ & DSA
CodeChef 5★ (2046)
Codeforces Specialist (1561)
LeetCode Knight (1928)
Problem Solving

DevOps & Tools

Git & Linux
Docker
AWS Services
Bash Scripting
Vim/Neovim

Professional Experience

Software Development Engineer 1

Mar 2024 - Present · 1 yr 9 mos

Angel One · Full-time

📍 Bengaluru, Karnataka, India · Hybrid

Built KYC & Compliance backend services in Go, improving reliability and reducing manual operations
Automated CDSL harmonized data push with encrypted API integration replacing manual CSV uploads
Developed NSE/BSE UCC file generation utilities for API downtime and backlog cases
Implemented WhatsApp and SNS notifications for KYC events (dormant accounts, FNO activation)
Fixed critical CDSL bugs and reduced NSE/BSE UCC data push failures by 80%
Built EMOD utility in Admin Portal for ops teams to regenerate stuck files

Golang AWS Lambda Camunda SNS PostgreSQL

Software Engineer 1

Dec 2023 - Feb 2024 · 3 mos

MAQ Software · Full-time

📍 Noida, Uttar Pradesh, India · On-site

Software Engineer Intern

Jan 2023 - Nov 2023 · 11 mos

Acko · Internship

📍 Bengaluru, Karnataka, India · On-site

Built Data Anomaly Platform with 90%+ accuracy for post-policy systems
Automated endorsement scheduling, reducing processing time by 40%
Fixed login validation bugs, reducing user errors by 40%

Spring Boot Python Golang PostgreSQL AWS Lambda

Featured Projects

URL Shortener with Analytics

Production-grade URL shortener handling 31.5B URLs/year with rate limiting (50 req/min), Redis caching, custom aliases, click analytics, and expiration. Built for 1000 RPS with 90% read/10% write ratio.

Golang Redis PostgreSQL Base62 Rate Limiting

Data Anomaly Detection Platform

Production system at Acko detecting anomalies in post-policy creation with 90%+ accuracy. Automated data validation and anomaly detection for insurance systems using ML and rule-based engines.

Spring Boot Python PostgreSQL AWS

Distributed Rate Limiter

Golang-based rate limiter using token bucket algorithm with Redis backend. Implements distributed locking with Redlock for handling concurrent requests across multiple services.

Golang Redis Token Bucket Redlock

Get In Touch

I'm always open to discussing new projects, creative ideas, or opportunities. Let's build something amazing together!

📧 sachinyadav7446@gmail.com | 📱 +91-9893335221

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