// Backend skill

Elysia.js

A Bun-first HTTP framework built for speed, with end-to-end type inference from route definition through to the client.

Used in roles

Developer

RUAMSUK PLATING LIMITED PARTNERSHIP

First Contact

Aug 2021 - May 2025 · 1 project

Developer

Freelance

Jan 2024 - Present · 1 project

Chief Technology Officer

RUAMSUK PLATING LIMITED PARTNERSHIP

Aug 2026 - Present · 1 project

Used in projects

012026

WhenWe

A privacy-first group scheduling app that shows couples, families and friend groups when everyone is free, without anyone sharing what is on their calendar.

+12

In Development

022023

RS TROPHY

A unified e-commerce and management platform for custom trophies, plaques, and medals — consolidating fragmented sibling brands into one high-performance system.

+20

Live

Written About

Should you delete a feature stuck in platform review? I deleted ~38k lines, restored it 4 days later

The code was done; launch waited on three platforms' review queues. I deleted 37,990 lines, then restored the feature four days later.

Aug 2026 · 9 min

Why BullMQ throws 'Custom Id cannot contain :' — and 1,034 green tests missed it

BullMQ refuses a custom job id with a colon. Four of my five id builders used one, and 1,034 green tests spied on queue.add and never noticed.

Aug 2026 · 8 min

Why does an LLM API call return an empty string? Reasoning tokens count against max_tokens

Every AI caption call 500'd in production: a reasoning model spent max_tokens thinking, finish_reason was 'length', and my client returned ''.

Aug 2026 · 8 min

Why our social publisher reported success for posts that never went out

Before it ever touched a platform, our social publisher could go green for posts sent private, wrong or not at all. What we fixed, and what it cost.

Aug 2026 · 8 min