Abhishek User

I’m a high-impact Software Development Engineer and sole backend developer with 1.5+ years of experience building and scaling production systems. I’ve independently architected and maintained backend infrastructure for a consumer e-commerce platform serving 1 Lakh+ monthly users and 10,000+ daily active users.

I thrive on performance and reliability improvements—achieving a 110x improvement in API response time (11 seconds to 100 milliseconds) through query optimization, N+1 elimination, caching, and database indexing. I also delivered strategic features that directly contributed to 5x revenue growth within one year.

I build revenue-driving systems such as coin-based rewards, a referral engine, notification scheduling, and intelligent courier integrations. I’ve designed RESTful APIs and optimized PostgreSQL to support real-time commerce workflows with strong production stability, including 99.9% uptime across critical services.

Security and operational excellence matter to me: I successfully mitigated a DDoS attack with zero data loss using security hardening, rate limiting, and IP filtering. I also automate daily executive reporting and built internal admin tools, reducing manual operational overhead by 40%.