KARAN SINGH

Backend Developer

Chandigarh, IN.

About

Results-driven Backend Developer with a strong foundation in scalable architecture, real-time API development, and system optimization, currently supporting 1000+ active users. Proven ability to enhance platform performance, resolve critical issues, and deliver high-impact features, complemented by expertise in AI/ML applications and competitive programming achievements.

Work

Mutex Lab

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Backend Developer

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Summary

Architected and optimized robust backend infrastructure for DoubleExcel, ensuring high availability and efficient data processing for a large user base.

Highlights

Architected scalable backend infrastructure using FastAPI and PostgreSQL, supporting over 1,000 active users for the DoubleExcel platform.

Enhanced spreadsheet platform by integrating advanced data processing capabilities and live charting features, significantly improving user experience.

Developed high-performance, real-time APIs capable of processing over 500 concurrent data streams with optimized database queries.

Ensured 99.95% system uptime through the implementation of a scalable microservices architecture and robust error handling mechanisms.

Poll Vault

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Backend Developer Intern (Remote)

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Summary

Optimized FastAPI backend systems and developed automated data collection tools, enhancing platform performance and reliability for real-time analytics.

Highlights

Optimized FastAPI backend systems, resolving over 50 critical issues and improving API response times by 35%.

Developed and deployed custom web scraping tools, automating data collection from 20+ diverse sources.

Enhanced the polling platform with real-time analytics, reducing system downtime by 60% and improving data accuracy.

Delivered critical features ahead of schedule by leveraging Agile methodologies within a cross-functional remote team environment.

Education

Chandigarh University, Punjab

Chandigarh, Punjab, India
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B.Tech Computer Science Engineering Grade: 7.79/10.0

KLM International School

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High School Diploma Senior Secondary (XII) Grade: 92%

Awards

DSA Mastery (1,200+ Problems)

Competitive Programming Platforms

Completed over 1,200 Data Structures and Algorithms problems across multiple competitive programming platforms, demonstrating strong foundational knowledge.

GeeksForGeeks 3-Star Developer

GeeksForGeeks

Solved over 530 data structure and algorithm problems, demonstrating advanced problem-solving capabilities.

LeetCode Top 20% Ranker

LeetCode

Completed over 420 LeetCode problems, achieving a top 20% ranking in competitive coding contests.

CodeStudio Backend System Design Achiever

CodeStudio

Solved over 250 problems focused on backend system design challenges, enhancing expertise in scalable system architecture.

University-Wide Coding Competition - Rank 90

University-Wide Competition

Secured Rank 90 out of 20,000+ participants in a highly competitive university-wide coding competition.

Prestigious Defense Examination Qualifier

Defense Examination Board

Successfully cleared a highly competitive defense examination with a 1% selection rate among 800,000+ candidates, showcasing exceptional analytical and problem-solving skills.

Languages

English

Certificates

Java Programming Fundamentals

Coding Ninjas

Data Structures and Algorithms in Java

Coding Ninjas

Social Networks (Top 5%)

NPTEL

Skills

Programming Languages

Python, C++, Java, JavaScript, HTML, CSS.

Backend Frameworks

FastAPI.

Databases

MongoDB, PostgreSQL, MySQL, Redis.

Tools & Technologies

Git, GitHub, Postman, Swagger, Docker.

Cloud & DevOps

AWS, CI/CD, GitHub Actions.

Core Concepts

Object-Oriented Programming, Data Structures and Algorithms, Graph Algorithms, Distributed Systems.

Projects

AI-Powered Resume Screening System

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Summary

Built an intelligent document analysis system with FastAPI, PostgreSQL, and OpenAI API to automate resume screening.

OpenAI Article Summarizer

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Summary

Created an AI-powered summarization tool with FastAPI backend, achieving 85% accuracy in content summarization.