// WORK

Things I've built and led

Selected case studies — platform migrations, distributed backends, data infra, and the occasional runtime-upgrade death march. Anonymized; numbers are from the résumé.

• // case 01

  EC2 → EKS migration at scale

  45 services · 250+ instances

  Multi-tenant SaaS platform · 2024 · Lead

  • Deploys 90→20 min
  • Infra cost −30%
  • Services 45

  • EKS
  • Terraform
  • Jenkins
  • SRE

  Read case study →
• // case 02

  Real-time analytics platform

  Debezium CDC → Kafka → StarRocks + Spark/Iceberg lakehouse

  Multi-tenant SaaS platform · 2024–present · Sole engineer

  • Lakehouse 10–15 TB
  • Dashboards ms-latency
  • Tiers bronze/silver/gold

  • Debezium
  • Kafka
  • StarRocks
  • Spark

  Read case study →
• // case 03

  GPS telemetry platform

  Mid-mile tracking for quick-commerce

  Logistics startup · 2020–2024 · Lead (5 eng — 3 backend, 2 frontend)

  • Vehicles 8–10k
  • Events/day 40–80M
  • Deploy freq 1/wk → 2–3/day

  • Node.js
  • MongoDB
  • Keycloak
  • Jenkins

  Read case study →
• // case 04

  Runtime upgrade program

  Java 8→17 across 35 services + Node 8→18 across 8 services

  Multi-tenant SaaS platform · 2024 · Lead (2 engineers on Java track, solo on Node track)

  • CVEs closed 100+
  • Services 43
  • Deps refresh full transitive

  • Java 17
  • Node.js 18
  • Maven
  • npm

  Read case study →
• // case 05

  Activity ingestion platform

  Kafka + Cassandra collector, Activity Streams 2.0 spec

  E-learning company · 2018–2020 · Sole engineer

  • Sources internal tools (VCS, quiz, LMS)
  • Spec Activity Streams 2.0
  • Pattern write-heavy multi-source

  • Kafka
  • Cassandra
  • Express.js
  • Lambda

  Read case study →