Sirawit Moonrinta

Sirawit Moonrinta

Tech Lead at Lotus's

Hi! My name is Sek. I want to improve everything around me.

I'm Sek — a software engineer turned tech lead based in Bangkok. I've been building software professionally since 2017, working across IoT platforms, fintech data tools, automotive enterprise systems, and large-scale e-commerce.

At Lotus's I lead engineering teams building backend services and platform infrastructure. My day-to-day is a mix of architecture decisions, code review, mentoring, and getting my hands dirty with Golang and TypeScript.

What I do as a Tech Lead

My role is less about writing all the code and more about making the team effective: picking the right abstractions, catching design issues before they calcify, and making sure engineers can move fast without creating landmines for future-selves.

I care deeply about developer experience — clear APIs, predictable deployments, observability that actually helps when things go wrong at 2am.

Skills

Languages & Runtimes

TypeScriptGolangJavaScriptNode.js

Frameworks

NestJSFiberVueJSReactExpressTailwind CSS

Data & Messaging

PostgreSQLMongoDBRedisKafka

Cloud & Infrastructure

AWS (Lambda, EC2, EKS, RDS)Tencent CloudDockerKubernetesArgoCDJenkins

Observability

GrafanaKibana
Thai(Native)
English(Elementary)
More about me →

Experience

View full →

Lotus's

Tech LeadMay 2026Present
Senior Software DeveloperSep 2022May 2026

Led engineering teams building e-commerce and internal platform products.

Fujitsu

Senior Software EngineerSep 2020Aug 2022

Consultant for Toyota Thailand. Node.js, React, heavy AWS, performance and security work.

NEVERSITUP

Senior Software EngineerApr 2020Aug 2020

Consultant for Toyota Thailand. Node.js microservices on AWS.

Recent Writing

View all →
THFeb 6, 2019 · 2 min read

JavaScript สมัยใหม่ (Modern JavaScript) ในปี 2019 ตอนที่ 1: บรรยาย

modern-javascriptjavascriptes6reviewจาวาสคลิป
THJan 11, 2019 · 4 min read

ทำความรู้จัก Firebase และผลิตภัณฑ์ต่าง ๆ ในช่วงต้นปี 2019 กัน

summary2019productfirebaseabout