Headline

Senior Backend Engineer | Building Systems at Scale (4M+ txns/day) | Java/Spring Boot

About

Senior Backend Engineer with 7+ years architecting and scaling distributed systems in fintech, gaming. Currently building high-throughput and highly consistent digital metalsI(gold/silver) platforms processing 4M+ daily transactions at scale. 🎯 What I Do I architect multi-tenant platforms that balance scale, reliability, and developer velocity. At Changejar Technologies, I lead technical initiatives that directly impact millions of users. 💡 Technical Expertise Languages: Java, Python, C++ Backend: Spring Boot, Microservices Architecture, Event-Driven Systems Distributed Systems: Apache Kafka, Multi-tenancy, API Gateway Design Databases: PostgreSQL, MongoDB, Redis, Cassandra Cloud: AWS (Lambda, EC2, RDS), Docker, Kubernetes Specialization: High-throughput systems, Payment infrastructure, System design 🌟 What Drives Me I'm passionate about building systems that are not just technically sound but also empower teams to move faster. Whether it's designing a framework that cuts development time in half or architecting a platform that scales seamlessly, I focus on multiplying impact. Email: ivaneshubham@gmail.com

Location

Greater Bengaluru Area

AI stack

claude code

claude

hugging face

mcp

obsidian

ollama

Work experience

SDE-3 at Jar, Jan 2023 - Present · 3 yrs 8 mos, Bengaluru, Karnataka, India, Leading backend engineering and architecture for digital payment and precious metals trading platforms serving 500K+ active users. Key Achievements: • Architected multi-tenant digital precious metals platform (gold & silver) handling 4M+ daily transactions at 1000 RPS with 99.99% success rate. • Led team of 4 engineers to deliver production UPI payment application processing 200K+ transactions/day with 99.99% uptime. • Launched silver trading feature scaled to 400K+ transactions/day within five months. • Built SDK UI/Headless integration modes enabling faster partner onboarding across 3 live partners and 6+ active integrations. • Designed reusable data access frameworks for Redis, MongoDB, and PostgreSQL, reducing new service development time by 60%. • Architected API Gateway handling 5000+ RPS with distributed rate limiting and sub-second latency. Reduced service onboarding time from 1 day to 2-3 hours through standardization. • Established technical onboarding program and mentored interns on advanced Java concepts (concurrency, JVM internals, design patterns)

Backend Engineer R1 at 99 Group, Jan 2022 - Dec 2022 · 1 yr, Singapore, Built ML-powered automation and integration systems for Southeast Asia's leading property platform. Key Achievements: • Engineered ML-powered listing automation system processing 200+ listings/day, reducing posting time by 40% for text and 50% for video listings. Implemented graph algorithm-based optimization with Azure Computer Vision, achieving 95%+ automation accuracy. • Built multi-platform publishing system enabling one-click distribution across 5+ real estate platforms, reducing manual posting effort by 50%. Designed async job processing with retry mechanisms for reliable cross-platform synchronization.

Software Development Engineer 2 at Games24x7, Apr 2021 - Dec 2021 · 9 mos, Bangalore Urban, Karnataka, India, Designed scalable tournament infrastructure and personalization systems for India's leading online gaming platform. Key Achievements: • Built distributed tournament scheduler using Quartz Scheduler for managing 10K+ concurrent tournaments. • Designed granular configuration system with dynamic rule engine, ensuring zero scheduling conflicts across multiple game servers. • Integrated ML recommendation model into cash deposit workflow, driving 25% increase in deposit conversion rate through data-driven personalization.

Software Development Engineer 1 at Games24x7, Oct 2019 - Apr 2021 · 1 yr 7 mos, Greater Bengaluru Area, Developed user engagement features and optimized infrastructure for high-traffic gaming platform. Key Achievements: • Developed user cohort-based contest ranking system, reducing user drop-off by 30% and increasing contest participation. • Migrated data cleanup service from EC2 to AWS Lambda, reducing infrastructure costs by 90% while maintaining throughput. • Optimized database query performance by 90% implementing keyset pagination, reducing P99 query latency from 2000ms to 200ms.

Back-end Developer Intern at Travel'd Globe, May 2017 - Jul 2017 · 3 mos, Greater Delhi Area

Education

Bachelor of Engineering - BE, Computer Science, Shri G S Institute of Technology & Science

High School, Physics, Chemistry and Mathematics, Narmada Valley International School, Hoshangabad

Public links

github: https://github.com/neutrino-01

codeforces: https://codeforces.com/profile/ivane_shubham

leetcode: https://leetcode.com/daemon_thread