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Chetan User

@chetanuser2

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Backend Software Engineer focused on event-driven systems and high-throughput B2B APIs at production scale.

India

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What I'm looking for

I’m looking for a team where I can build distributed, event-driven backend services and high-throughput APIs on AWS. I want ownership of performance, reliability, and production debugging, while shipping real user-facing features.

I’m a backend engineer specializing in event-driven systems (Kafka, Flink) and high-throughput B2B APIs. At SalescodeAI, I engineered a promotional schemes engine for Coca-Cola Saudi Arabia and delivered a 20x latency improvement (2s → 100ms) by implementing LZ4 streaming decompression, while supporting 50K+ daily transactions with sub-200ms latency.

I build production-grade distributed systems with strong debugging habits—optimizing analytical SQL (MySQL) from 30s+ to sub-second on multi-million row datasets, and delivering reliable AWS-native deployments (ECS/Fargate, S3, CloudWatch). I also support data pipelines with upsert-based idempotent writes and secure CI/CD by eliminating hardcoded secrets; outside my work, I’m building microservices for AI resume analysis and mock interviews in a React + FastAPI + Spring Boot stack.

Experience

Work history, roles, and key accomplishments

Current

Backend Software Engineer

Current

SalescodeAI

Dec 2023 - Present (2 years 8 months)

Implemented LZ4 streaming decompression to drive a 20x API latency improvement (2s → 100ms) and built an enterprise promotional schemes engine processing 50K+ daily transactions. Delivered real-time Kafka/Flink pipelines (100K+ events/day), optimized production SQL from 30s+ to sub-second, and secured AWS ECS/Fargate deployments by removing hardcoded secrets via Jenkins Credentials Manager.

Java Spring Boot Kafka Apache Flink REST APIs LZ4 Streaming Decompression Promotions Engines Idempotent Upserts SQL Query Optimization MySQL Window Functions AWS ECS AWS Fargate Docker Jenkins CI CD Retry Logic Microservices Distributed Systems

Technical Support Engineer

Extramarks Education

Aug 2022 - Dec 2023 (1 year 4 months)

Debugged production authentication and data consistency issues in a global EdTech platform and partnered with engineering on root-cause analysis. Used Salesforce, Freshdesk, and Excel to analyze reliability metrics and reduce incident resolution time by 30%.

Debugging Root Cause Analysis Incident resolution Salesforce Freshdesk Excel