Hi, my name is

Sethukumar J.

I build high-performance backend systems.

I'm a passionate Software Engineer based in Bangalore, specializing in scalable, cloud-native architectures, and microservices. I optimize workflows, reduce latency, and occasionally mentor aspiring developers to build the next generation of software.

Get In Touch GitHub

01. About Me

Over the past 3+ years, I have deeply immersed myself in backend development, currently working at Geospot Media Pvt Ltd. My core focus lies in Golang, where I architect high-performance backend applications and optimize complex data pipelines.

Beyond building software, I am dedicated to sharing knowledge. I serve as a Part-Time Mentor at Brototype, where I guide students in the software domain, helping them bridge the gap between academic concepts and production-ready engineering.

02. Experience

Software Engineer @ Geospot Media Pvt Ltd

Present | Bangalore

  • Re-architected the RTB bidder infrastructure, transitioning from SQL to a hybrid in-memory caching system (Golang & Aerospike).
  • Successfully reduced internal processing latency by over 50%, achieving a highly optimized 2ms response time for bid requests with 1 million QPS
  • Engineered high-throughput, real-time reporting pipelines capable of processing over a billion records per ingestion cycle.

Software Engineer @ SellerApp

2023 - 2024

  • Developed real-time data ingestion pipelines using Firestore, Cloud Functions, and BigQuery.
  • Automated critical workflows utilizing Google Cloud Workflows and Cloud Scheduler.
  • Built ETL processes syncing Firestore, BigQuery, and MongoDB.
  • Implemented Amazon SP API throttling & token caching using Redis, and successfully onboarded apps to the ONDC Network.

Software Engineer @ Packapeer Academy

2022 - 2023

  • Built robust microservices using Clean Architecture principles in Golang.
  • Integrated RabbitMQ for seamless message queuing between distributed services.
  • Deployed apps on AWS with Nginx-based load balancing and created API documentation via Swagger.

Part-time Mentor @ Brototype

Software Domain

  • Mentoring students in advanced software engineering practices, system design, and backend development.

03. Tech Stack

Languages

Golang, Python, Java, Shell, SQL

Backend Expertise

Domain Driven, Event Driven archietecture, ETL, Data Analytics, Ml/AI

Cloud & DevOps

GCP, AWS, Kubernetes, Docker, CI/CD

Databases & Queues

Mysql,PostgreSQL MongoDB, BigQuery,Clickhouse, Redis,Aerospike, RabbitMQ, Kafka

04. Featured Work & Writing

Milliseconds Matter: Optimizing Bidder Latency

An in-depth article on how we moved from standard SQL databases to a Go-based hybrid in-memory architecture (with Aerospike), cutting processing latency down to a blistering 2ms at high QPS.

System Design Golang Aerospike openRTB

Events Radar API

A comprehensive API for managing the structure and promotion of organizations and college events. Features secure JWT authentication and Razorpay integration.

Go Gin PostgreSQL Docker AWS

FixItNow Platform

A robust backend system architected for on-demand service and issue resolution. Designed using strict Clean Architecture principles to ensure high maintainability, decoupled business logic, and scalable performance.

Golang Microservices Clean Architecture gRPC

Go-WebRTC Streaming

A low-latency real-time communication implementation building a signaling server in Golang. It effectively manages peer-to-peer connections for media streaming and data channel transfers using WebSockets and WebRTC protocols.

Golang WebRTC WebSocket Real-Time

05. What's Next?

Get In Touch

Whether you have a question about backend optimization, want to discuss software mentorship, or simply want to say hi, my inbox is always open!

Say Hello