About
Highly skilled Full Stack Developer with 2+ years of experience in designing, developing, and optimizing high-performance, fault-tolerant systems and web applications. Proven expertise in GoLang, Python, Java, and JavaScript, coupled with strong proficiency in databases (MySQL, PostgreSQL, MongoDB, Cassandra) and cloud platforms (AWS, Kubernetes). Adept at building scalable solutions, improving system latency, and ensuring data compliance, as demonstrated by significant contributions to mission-critical projects at Gameskraft and Byju's.
Work
Bengaluru, Karnataka, India
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Summary
As a Full Stack Developer, Deepak Kumar designed and optimized high-performance backend systems and critical service infrastructure, significantly enhancing system efficiency and scalability for 1M+ users.
Highlights
Architected and developed a configuration-driven, zero-code helpdesk backend utilizing a JSON-based workflow engine and API orchestration, enabling rapid rollout of new flows and integrations without code modifications.
Optimized cohort service performance, significantly reducing P99 latency from 20ms to 10ms at a load of 1M users, and delivered key features like user list CSV download and cohort grouping.
Engineered an SLA tracking pipeline with AWS Lambda, processing ELB logs to accurately measure API/service SLAs and automating scheduled visibility reports to stakeholders.
Developed a high-performance mission service, processing 100K events/min (P99 < 150ms) and 200K reads/min (P99 < 50ms) for real-time progress tracking and rewards.
Engineered a fault-tolerant workflow orchestrator on Uber Cadence, Kubernetes, and Cassandra, ensuring guaranteed workflow completion with automatic retries and state persistence.
Built a scalable resource usage tracking system with real-time rate limiting and automated alerts, handling 100K POST requests/min with sub-70ms P99 latency.
Gurugram, Haryana, India
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Summary
As a Member of Technical Staff Intern, Deepak Kumar developed and implemented key modules for PII masking, attendance management, and employee onboarding, directly contributing to data security, operational efficiency, and cost reduction.
Highlights
Implemented customer PII masking with role-based access controls, enhancing GDPR/CCPA compliance and enabling customized data visibility based on user roles.
Developed a custom attendance module with a rule engine, eliminating 100% dependency on the tech team for attendance customization and empowering business users with independent rule configuration.
Executed a critical database migration, significantly improving API performance and reducing infrastructure costs.
Developed an employee onboarding/deboarding module with CSV upload support, enabling bulk processing and reducing manual effort and time.
Awards
Best Full-Stack Project Award (Gameskraft Bootcamp)
Awarded By
Gameskraft Bootcamp
Awarded for developing the best full-stack project during the Gameskraft bootcamp, recognizing outstanding technical and practical application skills.
1st Runner-Up, Tally CodeBrewers Hackathon
Awarded By
Tally CodeBrewers
Achieved 1st runner-up position out of 4,000 teams in a Full-Stack development hackathon, showcasing exceptional problem-solving and development skills.
Top Coder Ranking (LeetCode & CodeChef)
Awarded By
LeetCode, CodeChef
Recognized among the world's top 0.8% coders with a rating of 2258 on LeetCode and 5 stars on CodeChef, demonstrating elite algorithmic and data structure proficiency.
Global & National Contest Ranking
Awarded By
LeetCode, CodeChef
Achieved global 13th and India 3rd rank out of 20,000 participants in a LeetCode Bi-weekly contest, and global rank 43 in CodeChef Starters contest, highlighting competitive programming excellence.
Languages
English
Skills
Programming Languages
Python, C/C++, Java, GoLang, JavaScript/TypeScript, SQL.
Databases
MySQL, Cassandra, PostgreSQL, MongoDB, Elastic Search, Redis.
Frameworks & Libraries
Spring Boot, ReactJS, NodeJS, NestJS, TailwindCSS, ExpressJS.
Cloud & DevOps Tools
Kubernetes, Docker, Uber Cadence, Kafka, Git, AWS, Grafana, Jenkins, Zookeeper.