Hi, I am

Kaushik R
Bangera.

Senior Backend Engineer / Founding Engineer at Jumbo

Download Resume
~600K req / min
~30 Cr+ in-game txn / day
~₹5 Cr peak payment / day
~200 GB Postgres managed
~2 TB ClickHouse managed
Kaushik R Bangera
4.5+ YoE

About me

I build the quiet kind of high-scale backends.

Systems that move ~600K req/min, settle ₹5 Cr of payment throughput at peak, and shepherd tens of crores in in-game transactions without losing a paisa to float drift.

Four years of designing and scaling real-time systems on AWS. I care about correctness under load, clean service boundaries, and the kind of observability that turns a three-a.m. page into a five-minute fix.

I'm strongest where systems design, performance, and execution leadership meet — atomicity and idempotency in payments, tail-latency hunting with Locust and Percona, Kinesis + Glue + Athena pipelines, WebSocket fleets, and Redis-backed event aggregation.

Skills

My toolkit, by category.

Languages

TypeScript · JavaScript · Go · Python · SQL

Backend

Node.js · gRPC · REST · WebSockets · Microservices · Event-driven · ETL · System design

Databases

PostgreSQL (RDS / Aurora) · MySQL (Aurora) · ClickHouse · MongoDB · Redis

AWS Cloud

Lambda · EC2 · EKS · S3 · API Gateway · Kinesis · Firehose · Step Functions · Glue · Athena · SQS · Cognito · CloudWatch · Personalize

DevOps & Tools

Docker · Kubernetes · Terraform · NGINX · Airflow · CI/CD · Datadog · Percona · Tailscale · Git

Blogs

Notes from the build.

MySQL · Indexing

How a 2 GB buffer pool made MySQL full-text 100× faster

Full-text vs B-tree on a 93M-row table. Same query, same data — and the difference between 21 seconds and 0.6 seconds came down to one config knob.

8 min read

Kubernetes · Multiplayer

Scaling multiplayer game servers with Agones on Kubernetes

Long-lived player sessions don't autoscale like an HTTP service. A walkthrough of the architecture I built around Agones, Open Match and a custom Game Server Manager to allocate rooms, re-use warm pods, and scale by room count.

9 min read

AWS · Data Pipeline

A resilient AWS ingestion pipeline with Glue ETL

Validate, route, transform, catalog, query. A walk through an event-driven pipeline that pushed cost down ~66% and made Athena queries sub-second on a Parquet lake.

7 min read

Work

Where I've shipped at scale.

Jumbo · Founding Engineer

Building the gaming platform from zero to ~600K req/min.

joinjumbo.com · New Delhi · Aug 2024 — Present

  • Scaled the gaming platform to ~600,000 req/min, reliably handling ₹5 Cr peak payment throughput and 30 Cr+ in-game transaction volume.
  • Rewrote the core transaction service in Go + gRPC, dropping latency to single-digit ms; engineered financial correctness via atomicity, idempotency, running balances, and integer currency normalization to eliminate float drift.
  • Owned end-to-end system architecture for the in-house fantasy platform — service boundaries, schema, API contracts.
  • Cut backend load by ~50% by moving low-change / high-read APIs behind a CDN with correct cache-control and invalidation.
  • Built an async recharge + KYC orchestration layer with a vendor-agnostic Adapter Pattern, reducing third-party cost by ~70%.
  • Delivered real-time infra: Redis + ClickHouse event aggregation and a scalable WebSocket platform (API Gateway + Redis) for connection state, channel broadcasts, and WS-based API calls.
  • Built centralized logging + trace correlation on Node.js async_hooks, reducing MTTR and surfacing perf bottlenecks across services.
  • Modernized AWS infra with AWS Organizations, CI/CD pipelines, IAM Identity Center RBAC, and Tailscale-secured internal access.
  • Primary escalation owner for production incidents — debugging, resolution, release execution, unblocking the team.
  • Built an Aviator game from scratch and scaled it to ~1,000 CCU; improved velocity using AI-assisted tooling and MCP database workflows.
Juego Studios · Software Engineer

AWS pipelines, multiplayer infra & Web3 wallet flows.

juegostudio.com · Mangalore · Aug 2021 — Jan 2024

  • Built a resilient AWS ingestion platform using Kinesis, cutting projected infra cost by ~66% while improving throughput.
  • Delivered analytics pipelines using Glue ETL + Glue Catalog + Athena, cutting query latency from ~7s → 1–2s.
  • Improved DB scalability via Aurora MySQL tuning, SQL transactions, indexing, and Redis caching — sustained ~1,000 CCU and 1,000 RPS.
  • Provisioned cloud infra with Terraform for reproducible deployments.
  • Deployed multiplayer game servers on Kubernetes, integrating Agones as a PoC for dedicated server scaling.
  • Implemented M2M auth architecture and JWT access/refresh token flows.
  • Integrated wallet auth flows with Metamask and Keplr for Web3 gaming.
  • Mentored engineers; collaborated across gameplay, frontend, CMS, and game-design teams.

§ Internal innovation

  • Built a Lambda RAM picker that benchmarks functions across memory configurations to find the most cost-efficient allocation.
  • Replaced NAT Gateway with a repurposed EC2 NAT instance, cutting egress cost.
  • R&D on Amazon Personalize for in-app recommendation use cases.
  • Designed a room handler with a bucket system to organize server-side game loops at scale.
  • Established a caching strategy for master tables to cut read pressure on the primary DB.
  • Implemented database synchronization tooling to keep table structure consistent across environments.

Education

B.E. Computer Science Engineering

Srinivas Institute of Technology, Mangalore · 2021

Contact me

Have a hard backend problem? Let's talk.

Scale, correctness, or a system quietly bleeding cost — I'd love to hear about it.

Email

kaushikrb909@gmail.com

GitHub

github.com/NeuronEnix

LinkedIn

linkedin.com/in/kaushik-r-bangera