Ranjan Kumar

Software Developer Intern | High-Frequency Trading & Full-Stack Development

Kolkata, IN.

About

Highly motivated B.Tech student specializing in Electronics and Communications Engineering, with hands-on experience in high-frequency trading (HFT) software development and full-stack application engineering. Proven ability to optimize system performance, reduce latency by up to 70%, and develop robust, scalable solutions using C++, Rust, TypeScript, and the MERN stack. Eager to leverage strong problem-solving skills and a competitive programming background to drive innovation in challenging technical environments.

Work

Teesta Investment (HFT)

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Software Developer Intern

Kolkata, West Bengal, India

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Summary

Developed high-performance trading systems and tools, specializing in market data processing, latency reduction, and real-time analytics for high-frequency trading.

Highlights

Engineered a high-throughput market data replayer, enhancing strategy iteration speed by 2x and accelerating backtesting workflows for trade and order book streams.

Integrated OpenTelemetry into a BitKub-Binance Triangular Arbitrage system, reducing latency analysis time by 45% through advanced Grafana dashboards and Jaeger traces.

Developed a real-time StreamChecker for BitKub/Binance depth, trade, and ticker streams, decreasing arbitrage misses by 30% by precisely logging inactive coins.

Implemented a centralized Spread TCP Server utilizing RocksDB, cutting latency by 70% and enabling efficient data sharing across multiple concurrent Triarb instances.

Designed VolumeWiseCoinFilters to scan CoinDCX's high trade volumes, extracting top 10% high-activity coins and accelerating strategy decisions by 80%.

Created a USDT Margin Matrix dashboard using TypeScript and shaden/ui, achieving 50% faster rendering and comprehensive full test coverage with Vitest.

Embedded structured logging in GMCKS-CRM using Pino and Moment.js, reducing debugging time by 70% and ensuring capture of all API anomalies.

Education

National Institute of Technology, Jamshedpur

Jharkhand, Jharkhand, India
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B.Tech Electronics and Communications Engineering Grade: CGPA: 8.11

Sree Ayyappa Public School, Bokaro Steel City

Jharkhand, Jharkhand, India
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Class 12th - CBSE Science Grade: Percentage: 85.6

Vimla Pandey Memorial Gyan Niketan School

Jharkhand, Jharkhand, India
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Class 10th - CBSE General Studies Grade: Percentage: 86.4

Awards

Competitive Programming Achievement

LeetCode, Coding Ninjas, GeeksforGeeks

Successfully solved over 1000 data structure and algorithm problems across leading competitive programming platforms.

Codeforces Pupil Rank

Codeforces

Attained Pupil rank on Codeforces with a maximum rating of 1235, demonstrating strong algorithmic problem-solving skills.

Codeforces Round 950 Div-3 Ranking

Codeforces

Achieved Rank 1388 among 28,000+ participants in Codeforces Round 950 Div-3, highlighting top-tier performance in a competitive programming contest.

Coding Ninjas Weekend Contest 98 Ranking

Coding Ninjas

Secured Rank 103 among 3,800+ participants in Coding Ninjas Weekend Contest 98, showcasing exceptional problem-solving abilities.

Coding Ninjas Specialist Title

Coding Ninjas

Awarded Specialist title on Coding Ninjas with a peak rating of 2047, recognizing advanced proficiency in data structures and algorithms.

LeetCode Weekly Contest 406 Ranking

LeetCode

Achieved Rank 1084 among 37,000+ participants in LeetCode Weekly Contest 406, demonstrating strong competitive programming skills.

Skills

Programming Languages

C++, Rust, TypeScript, JavaScript, Python, SQL.

Backend Technologies

Node.js, Express.js.

Frontend Technologies

React.js, HTML, CSS, shaden/ui.

Databases

PostgreSQL, MySQL, MongoDB, RocksDB, Redis.

Networking & Protocols

WebSockets, TCP Sockets, POSIX Sockets, Boost.Asio, libwebsockets, High-Throughput Systems.

Tools & Platforms

Git, GitHub, Postman, Grafana, Jaeger, OpenTelemetry, Redux, VS Code, Vitest.

Rust Ecosystem

Tokio, Tokio-Tungstenite, Flume, SeaORM.

CS Fundamentals

DSA, OOP, DBMS, OS, Computer Networks, Algorithms, Data Structures.

Other Technical Skills

Monitoring & Observability, Real-Time Data Handling, Distributed Systems, API Design, Performance Optimization, Latency Reduction, System Integration, Full-Stack Development, Competitive Programming.

Projects

Khana Khazana - Full-Stack Food Delivery Platform

Summary

Developed a comprehensive full-stack food delivery platform using the MERN stack, featuring robust UI, secure authentication, and scalable API management.