Harinder Singh

I’m a Senior Backend Engineer and Tech Lead with 7+ years of experience designing, building, and scaling fault-tolerant, high-throughput distributed systems on AWS. I’ve led technical roadmaps and delivered event-driven microservices that handle up to 800K daily transactions under a strict 99.97% uptime SLA.

At Indi IT Solutions, I directed backend architecture and AWS infrastructure for three high-traffic SaaS applications, scaling to 500K–800K daily transactions while maintaining 99.97% availability. I cut P99 application latency by 65% by optimizing database query execution plans, tightening connection pooling limits, and adding Redis caching layers.

I specialize in removing synchronous bottlenecks and improving resilience through architecture changes. I decoupled monolithic components into a resilient, Kafka-based event-driven architecture, and I focus heavily on observability and proactive operational controls.

I also bring FinOps discipline to engineering outcomes, reducing annual AWS cloud infrastructure expenditures by 35% via FinOps reviews, AWS CDK automated setups, and right-sizing with Savings Plans and Spot instances. I champion strict code and architecture review standards, mentor engineers, and partner with leadership on long-term product and infrastructure strategy.