Raj Kumar
Summary
Skilled Software Engineer with over 4 years in developing scalable distributed systems and high-throughput backend services. Enhanced latency and reliability in systems handling over 300 billion daily requests. Expertise includes Java, Rust, Go, C++, system design, distributed architectures, and SQL/NoSQL databases.
Overview
4
4
years of professional experience
Work History
Software Engineer 2
Amazon
06.2026 - Current
- Developed data pipelines integrating multiple sources and tables, delivering meaningful insights.
- Facilitated data-driven decision-making with scalable reporting and analytics solutions for vendors and sellers.
- Provided actionable insights to vendors and sellers by analysing metrics across dimensions and timeframes.
Software Engineer 2
Media.net
01.2025 - 05.2026
- Led the migration of a high-throughput microservice from Java to Rust, reducing p95 latency by 70% and memory usage by 60% while maintaining API compatibility and production reliability.
- Optimized Bloom Filter implementations across distributed services, reducing memory consumption by 25–30% and improving system scalability.
- Built large-scale data processing solutions for fraud detection using IP and device intelligence, enabling accurate and reliable real-time traffic analysis.
- Enhanced distributed system logging infrastructure, reducing CPU utilization by 15% and improving operational efficiency and observability.
Software Development Engineer 1
Media.net
07.2022 - 12.2024
- Scaled Programmatic Buying services processing 300B+ daily requests at 4M QPS, supporting Google EBDA, Google AdX, and TAM.
- Leveraged Google Cloud Workload Identity, Cloud SQL Auth Proxy, and Secret Manager to implement passwordless service authentication and strengthen security.
- Designed and optimized multi-layer caching solutions using Caffeine, Redis, and Aerospike, enabling low-latency data access for high-throughput distributed systems.
- Optimised Kafka-based asynchronous event driven logging, reducing log payload size by 30–35% and improving throughput.
- Enhanced system observability by improving logging, monitoring, and debugging infrastructure, enabling quicker issue resolution.
- Ensured compliance with privacy regulations including CCPA, MSPA, LMT, and DNT.
- Mentored interns and conducted code reviews to promote engineering best practices, fostering a culture of quality within the team.
- Led delivery of features that directly impacted revenue and built scalable, highly available backend solutions for mission-critical applications.
Education
Bachelor of Information Technology - Information Technology
National Institute of Technology
Kurukshetra, HR01-2022
Skills
- Java development
- C software engineering
- Back-end development
- Software development
- MySQL database management
- Database design
- Efficient algorithm implementation
- Testing and deployment
- Testing and debugging
- Development life cycle
- Project planning
- Project delivery
- Code optimization
- Problem solving
Languages & Technology
- C/C++, Java, GoLang, Rust, Python, MySql, NoSQL, gRPC, RESTful Api, Html/Css, Groovy, Bootstrap, React, React-Native
- GitLab, Intelli J, Sublime, Visual Studio code, Cursor, ChatGPT
- Aerospike, Jenkins, Kubernetes, Redis, Kafka, MongoDB, Firebase
Coding Achievements
- Guardian Badge(Top 5% ) holder on Leetcode - rajyadav007
- Max Ratings – Codechef: 2104 (5 ★ , Yellow), Codeforces: 1862 ( Expert),Leetcode: 2255 (Guardian )
Timeline
Software Engineer 2
Amazon
06.2026 - Current
Software Engineer 2
Media.net
01.2025 - 05.2026
Software Development Engineer 1
Media.net
07.2022 - 12.2024
Bachelor of Information Technology - Information Technology
National Institute of Technology