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Zelcos Laboratory

Software Engineer Intern

  • Mar 2024 - Aug 2024
  • Penang, Malaysia

An internship focused on making an existing enterprise MRP system faster and more reliable. I learned that performance work is mostly careful measurement — finding the real bottleneck before touching a line of code.

2x

Workload capacity

12+

Production APIs

99.95%

Uptime

01

What I did

  • Profile and optimize database operations in an enterprise MRP system
  • Automate background tasks to handle higher load
  • Build and document production-grade APIs
02

Key wins

  1. Optimized MRP system to handle 2x higher workload by streamlining database operations and automating background tasks

  2. Built 12+ production-grade APIs sustaining 99.95% uptime

03

Work & life

Measure, then optimize

Doubling throughput sounded like a rewrite at first — it turned out to be a handful of well-chosen indexes and moving slow work off the request path. A good lesson in not guessing.

04

Gallery

Photo coming soon
MRP system internals

Stack & tools

PythonREST APIsSQLBackground jobs