Available for select consulting

Kaushik R Bangera

Senior Backend Engineer · Distributed Systems · Real-Time · AWS

I build high-scale, real-time backends — the kind that quietly handle ~600K requests/min, ₹5 Cr peak payment throughput, and tens of crores in in-game transactions without losing a paisa to float drift. Founding engineer at Jumbo, ex-Juego Studios.

See what I've built Get in touch
~600K
req/min in production
₹5 Cr
peak payment throughput
~50%
backend load reduction via CDN
~66%
infra cost cut on ingestion

# about

Senior backend engineer with 4+ years of experience 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 3 a.m. page into a five-minute fix.

At Jumbo, I rewrote the core transaction service in Go + gRPC, owned the fantasy platform's architecture end-to-end, and acted as the primary escalation owner for production incidents. Earlier, at Juego Studios, I built AWS ingestion pipelines that cut projected infra cost by ~66% and ran multiplayer game servers on Kubernetes with Agones.

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

Languages

  • TypeScript
  • JavaScript
  • Go
  • Python
  • SQL

Backend

  • Node.js
  • gRPC
  • REST APIs
  • WebSockets
  • Microservices
  • Event-driven
  • ETL
  • System Design

Databases

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

AWS

  • 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
  • Percona
  • Tailscale
  • Git

# experience

Founding Engineer — Senior Backend Engineer

Jumbo · 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 milliseconds. Financial correctness via atomicity, idempotency, running balances, and integer-based currency normalization to eliminate float drift. Built reliable user-attribute fanout pipelines for analytics/event platforms using TDD and spec-driven development with AI-assisted validation.
  • 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 strategy.
  • Built an async recharge + KYC orchestration layer using a vendor-agnostic Adapter Pattern, reducing third-party cost by ~70% through caching and retries.
  • Delivered real-time infra: Redis + ClickHouse event aggregation/distribution, and a scalable WebSocket platform (API Gateway + Redis) for connection state, channel broadcasts, and WS-based API calls.
  • Built centralized logging + trace correlation (ClickHouse + Redis) on Node.js async_hooks, reducing MTTR and surfacing perf bottlenecks across services.
  • Improved tail latency and peak resilience via API + DB bottleneck analysis and load testing with Locust, Percona, and ClickHouse.
  • Modernized AWS infra and security with AWS Organizations, CI/CD pipelines, IAM Identity Center RBAC, and Tailscale-secured internal access with least-privilege ops.
  • Hardened account safety with OTP abuse prevention and multi-device concurrency conflict handling.
  • 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 with stable gameplay loops and production hardening.
  • Improved engineering velocity using AI-assisted tooling and MCP database workflows for faster debugging and architecture validation.

Software Engineer — Backend / Cloud

Juego Studios · Mangalore

Aug 2021 — Jan 2024
  • Built a resilient AWS ingestion platform using Kinesis, cutting projected infra cost by ~66% while improving throughput and reliability.
  • Delivered end-to-end 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 infrastructure with Terraform (IaC) for reproducible deployments.
  • Deployed multiplayer game servers on Kubernetes, integrating Agones as a PoC for dedicated server scaling.
  • Implemented secure auth including M2M architecture and JWT access/refresh token flows.
  • Built internal cost-optimization tooling — Lambda memory benchmarking and replacing NAT Gateway with EC2 NAT.
  • Integrated secure wallet auth flows with Metamask and Keplr for Web3 gaming features.
  • Mentored engineers and collaborated across gameplay, frontend, CMS, and game-design teams.

# education

B.E. Computer Science Engineering

Srinivas Institute of Technology, Mangalore · 2021

# contact

Have a hard backend problem — scale, correctness, or a system that's quietly bleeding cost? I'd love to hear about it.

email kaushikrb909@gmail.com phone +91 97311 76618 github github.com/NeuronEnix linkedin linkedin.com/in/kaushik-r-bangera