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Komsan Nipharat

00 / Identity

Komsan Nipharat

Software Developer

I build logistics, payment, and telecom systems — NestJS and Go services, Angular back offices, and Flutter apps that run in production.

TypeScriptGoDartJavaScriptPythonNestJSNode.jsMongoDB
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FIG.0Request path

  1. API

    Node.js · NestJS · REST

    MongoDB

  2. Queue

    NSQ topics, outside the HTTP request

  3. Workers

    Go · retry · schedule · drain

  4. Operator network

    Telecom adapters

    SMS · USSD · IVR

  5. Payment / MVAS

    Completes in production

FIG.01 / Signals

10K+ installs

Driver app

Tago driver app on Google Play, as lead mobile developer.

~3,400 commits

Logistics platform

24 repositories and 12 products at GRAM, Oct 2023 – Sep 2026.

−55%

Image size

Smaller API Docker image after moving PDF rendering to Gotenberg.

QR + carrier billing

Payments

Bank QR payment service at GRAM; carrier billing for three Thai operators at AddTech.

SMS · USSD · IVR

Telecom path

Operator integrations, not mocked channels.

16 of 24 repos

Ownership

Sole or near-sole author (≥90% of commits) at GRAM.

FIG.02 / Work

All projects

Selected systems: problem, role, and what changed

FIG.1Logistics

Logistics

Core backend contributor (#2 of the API) and co-lead of the Angular back office

Tago Express TMS platform

Transport and container-yard management: gate-in/out, surveys, EIR, yard plans, orders, driver assignment, invoicing, and receipts. One platform serves several white-label tenants.

NestJS API over PostgreSQL and MongoDB, with Redis, S3, and Socket.io. Angular back office white-labeled per tenant through build presets and a feature-flag registry. API tenants live on git branches; menus are database-driven.

API image 2.6 GB → 1.17 GB (−55%). Back-office image 79 MB → 29 MB. Four Angular major upgrades, 17 → 22.

NestJSAngularPostgreSQLMongoDBRedisGeminiGotenbergDocker
FIG.2Mobile

02

Mobile

Tago driver app

Flutter app truck drivers use to take jobs, check in at gates, scan containers, and get paid.

Flutter + GetX client on the TMS API. WebSocket job notifications with polling fallback, OneSignal push, multi-environment config, and Fastlane store releases.

FlutterDartGetXWebSocket
FIG.3Mobile

03

Mobile

TruckKrub and ล่าค่าเที่ยว

Trucking marketplace apps where shippers post jobs and drivers find work, then talk and close directly.

Flutter + Riverpod apps in a Melos monorepo sharing code between two branded apps. NestJS (Fastify) API with BullMQ and GenAI. Angular 20 + PrimeNG + ag-grid admin.

FlutterRiverpodMelosFastlane
FIG.4AI

04

AI

AI Sweeper — email to booking

Reads freight emails and their Excel/PDF attachments, and turns them into structured bookings and containers with an LLM.

NestJS 11 + BullMQ API runs extraction 'runs' through OpenRouter and grades them for accuracy, with A/B prompt arms. Angular 22 review grid for operators to correct and export.

AngularNestJSBullMQOpenRouter
FIG.5Logistics

05

Logistics

TMS Light

Lightweight transport billing product: work order → invoice → receipt, plus aging and revenue reports.

pnpm + Turborepo monorepo. Angular 22 (zoneless, signals) back office, NestJS 11 + Mongoose API, a shared-types package as the contract, Playwright E2E, GitLab CI to Huawei SWR.

AngularNestJSMongoDBTurborepo
FIG.6Workers

06

Workers

EDI Go service (COPARN / CODECO)

Go microservice that receives and sends shipping-line EDI messages over FTP and email.

Go (Cobra, Viper, sqlx) on PostgreSQL. RabbitMQ consumers and publishers, scheduled senders, Jaeger/OpenTelemetry tracing, FTP and Gmail OAuth transports.

GoRabbitMQPostgreSQLJaeger

FIG.03 / Side & open source

Things I build for myself, and fixes I send upstream to tools I use at work

Side projects

01

Solo builder

Khuen Jor — photos to the venue TV

Guests pay and send a photo; it plays on the venue's TV in queue order. Moderation, paid boost, reactions, and a leaderboard.

Next.jsTypeScriptSSEPostgreSQL

02

Solo builder

Rental Agent Hub

LINE-first workspace that turns rental listing posts into matched leads for co-agents.

Next.jsMongoDBLINE LIFFS3

03

Author

Small public tools

Tools I built for myself and published: Jira tree viewer, MIDI flashcards, ISO 6346 container numbers, and a project opener CLI.

Next.jsSvelteWeb MIDINode.js

Merged upstream · 7 PRs

All PRs on GitHub

Stars as of Nov 2026

FIG.04 / Experience

Roles, then what changed because of the work

  1. A & P Innovate Service Co., Ltd.

    Software Developer · Outsourced · Bangkok, Thailand

    Oct 2026 — Present

    • Building a manufacturing and warehouse ERP for a frozen-food producer (sales, production, warehouse, and loading bay) in TypeScript, React, Node.js, and PostgreSQL; delivered auth hardening, warehouse flows, and master data across 50+ merged pull requests.
    • Set up an AI-assisted delivery pipeline: agents draft code and tests, and every change goes through my review and CI before merge. Restored the failing CI pipeline.
    TypeScriptReactNode.jsPostgreSQLRedis

  2. GRAM Software Solution Co., Ltd.

    Full Stack Developer · Bangkok, Thailand

    Sep 2023 — Sep 2026

    • Lead developer of the Tago driver app (10K+ Play Store installs) and sole developer of TruckKrub and ล่าค่าเที่ยว (La Kha Thiao), both live on iOS and Android.
    • Cut the API Docker image from 2.6 GB to 1.17 GB by moving PDF rendering from Puppeteer to Gotenberg.
    • Upgraded the Angular back office from v17 to v22 and built its multi-tenant white-label system.
    • Sole developer of the bank QR payment service that connects yard and transport billing to two Thai bank QR payment rails.
    • Documented servers, deploy playbooks, and a domain primer so the platform can be operated and handed over without tribal knowledge.
    • About 3,400 commits across 24 repositories and 12 products; sole or near-sole author of 16 of the 24 repositories.
    NestJSGoAngularFlutterMongoDBPostgreSQLRabbitMQDocker

  3. AddTech Hub Public Company Limited

    Software Developer · Bangkok, Thailand

    Apr 2020 — Sep 2023

    • Main author of the New MVAS scheduler in Go + NSQ (597 of 657 commits), which sends subscription content and charges across three Thai mobile operators.
    • Main author of the campaign platform's NestJS service (348 of 423 commits): services, redeem codes, USSD callbacks, partner callbacks, and Kibana reporting.
    • Built the carrier-billing portal and partner dashboard in Angular, including fixes from a penetration test.
    • Fixed production deadlocks, retries, and slow MongoDB queries by moving blocklist and subscription checks to aggregations.
    GoNSQNestJSMongoDBElasticsearchAngularAWS

  4. National Electronics and Computer Technology Center (NECTEC)

    Research Assistant · Internship · Pathum Thani, Thailand

    2017 — 2020

    • Z-Size Ladies: face tracking and warping for BMI visualization (Flask, dlib 68-point landmarks, OpenCV), later rewritten in Flask + React.
    • AutoKnee: knee X-ray tool that crops AP/LP views, finds femur and tibia contours, and runs a U-Net (TensorFlow/Keras, React + Konva).
    PythonFlaskOpenCVdlibTensorFlowReactthree.js

FIG.05 / Skills

Languages

  • TypeScript
  • Go
  • Dart
  • JavaScript
  • Python

Backend

  • NestJS
  • Node.js

Frontend

  • Angular
  • Flutter
  • Next.js
  • React
  • Svelte
  • Vite
  • three.js

Data

  • MongoDB
  • PostgreSQL
  • Redis
  • Elasticsearch

Infrastructure

  • Docker
  • AWS
  • GitLab CI

Queues

  • NSQ
  • RabbitMQ
  • BullMQ

AI

  • LLM integration
  • TensorFlow
  • OpenCV

Tooling

  • Fastlane
  • Playwright

FIG.06 / About

Production engineering over demo architecture. I care about the path a request takes: API, queue, datastore, and what happens when any of those fail. Most of the work is unglamorous — schema, workers, integrations, release pipelines, and making the next person able to operate the system.

Location
Pak Kret, Nonthaburi, Thailand
Availability
Open to engineering conversations

FIG.07 / Contact

Relevant CV, then a conversation

Pick a targeted profile, download a print CV, or write directly

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Backend EngineerPlatform EngineerFull Stack EngineerSoftware Engineer