Tham Saleerueng — Software Engineer

Hello, my name is

Tham Saleerueng

And I'm

Computer Engineer turning ideas into production-grade mobile & web applications — fleet, healthcare and delivery systems used by real businesses.

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About me

I'm Tham, a

I hold a B.Eng. in Computer Engineering (RMUTT) and a Master's in Data Engineering (KMUTNB). At Freewill FX I build production fleet systems — real-time GPS tracking, multi-camera video and driver-KPI platforms — spanning Flutter apps across Android, iOS and Android Box, Go services on MySQL and MongoDB, and even C firmware for RISC-V biometric devices. On the side I craft healthcare apps for physicians and nursing teams. I enjoy turning messy, real-world requirements into reliable, friendly software.

5+Years building

11+Shipped apps

2Companies

5Domains

Download CV

Education

Master's · 2022

Data Engineering

King Mongkut's University of Technology North Bangkok (KMUTNB)

Master's study in data engineering — data pipelines, storage and processing for analytics-driven systems.

Bachelor's · 2020

Computer Engineering

Rajamangala University of Technology Thanyaburi (RMUTT)

Foundations in software, hardware and systems — where my interest in building real applications began.

What I Do

Application Design

Designing mobile UI/UX that meets real user needs and stays friendly, clean and fast across iOS and Android.

System Analysis

Analyzing systems before building — mapping requirements into solutions that actually work and scale efficiently.

App Development

Building Flutter apps backed by Go & Node.js APIs, working closely with design and product teams.

Backend Development

Designing Go REST APIs backed by MySQL & MongoDB — auth, event correlation and notification services, containerised with Docker and deployed to Kubernetes.

Experience

Career Timeline

2025 – Present

Freelance · Healthcare

Mobile Developer · Remote

Physician apps for Chulabhorn Hospital, Siriraj Salaya and Thammasat University Hospital — patient records, lab trends, e-prescriptions and medical-imaging review.
Nursing Progress — bed management, nurse notes, duty rosters and PDF printing across mobile, web and desktop (Firestore + MongoDB).
Nurse Duty Calendar — two-dimensional roster grid, shift-off requests, approval flow and real-time schedule sync.

Jun 2023 – Present

Freewill FX Co., Ltd.

Software Engineer · Bangkok

Built TERMINUS, the fleet-monitoring app — real-time GPS tracking with map clustering, route replay and a four-mode video system (live RTMP, DVR playback, SD-card download, multi-camera monitor).
Driver KPI app + Go backend — KPI scoring, web-aligned trip cutting, BLE breathalyzer sync and an event appeal/declaration flow.
Event Dashboard API in Go — event queries and notification topics, containerised with Docker and deployed to DigitalOcean Kubernetes.
CTAD-100 biometric time & attendance — Android app (Java, face + fingerprint) and RISC-V firmware (C) syncing over REST and WebSocket.
Core Flutter work across Android, iOS and Android Box, shipped to the stores.

May 2022 – Mar 2023

Vansales Application Co., Ltd.

Fullstack Developer · Nonthaburi

SiPH Easy — physician app for Siriraj Piyamaharajkarun Hospital: patient lists (IPD / OPD / Plan OR), lab results, medications, vital-sign charts, X-ray viewer and phone orders (with Atos).
Vansales app & web — unit-sales management and route planning on iOS and Android.

Dec 2021 – Mar 2022

Freelance

Frontend Developer · Pathum Thani

Node.js web application for a medical device management system.

Jun 2021 – Oct 2021

Bluewind Solution Co., Ltd.

Frontend Developer (Internship) · Pathum Thani

Web application development and ERP system design.

My Tech Stack

Programming Language

Framework & Library

Database

DevOps & Infra

AI / ML

Tools

Projects

Selected products I've designed and built — most are live in production today.

TERMINUS Fleet Management

Fleet-manager app for real-time vehicle tracking on Google Maps with marker clustering and route replay. Offline-cached push notifications (Isar) and a four-mode video system — live RTMP stream, DVR playback, SD-card download and multi-camera monitor. PIN + biometric lock; GPS certified by the Department of Land Transport.

FlutterGetXDioIsarWebSocketGoogle MapsFirebase

Freewill FX · iOS / Android / Android Box

True Delivery Tracker

Delivery tracking for True Business — view live courier positions and the status of each shipping worksheet across the delivery operation.

FlutterRealtime GPSREST API

Freewill FX · iOS / Android

SiPH Easy — Physician App

Clinical companion for physicians at Siriraj Piyamaharajkarun Hospital — patient lists across IPD, OPD, Plan Admit and Plan OR, with lab results, medication profiles, vital-sign charts, an X-ray image viewer, phone orders and critical-lab confirmations. Secured by AD login, SMS OTP, PIN and biometrics. Delivered with Atos.

FlutterHealthcareBiometricsNotifications

Vansales App · iOS / Android

Vansales Application

Unit sales management system. Vansales helps field teams with route planning and on-the-road order capture, available on both iOS and Android.

FlutterFullstackRoute Planning

Vansales App · iOS / Android

Driver KPI App

Driver performance & compliance app — daily KPI scores, trip history, policy-violation events, a BLE breathalyzer (alcohol) sync and an in-app appeal/declaration flow. Backed by a Go service correlating GPS, events and stops; auth via Firebase OTP + PIN + JWT.

FlutterGoGetXMySQLMongoDBBLE

Freewill FX · Mobile + Backend

Event Dashboard API

Go REST API (Gorilla Mux) that queries and correlates vehicle events — powering notification topics and video-event matching across the fleet platform. MySQL master data + MongoDB events, shipped via Docker to DigitalOcean Kubernetes.

GoMySQLMongoDBDockerKubernetes

Freewill FX · Backend

Hospital Physician Apps

Freelance clinical apps for doctors at Chulabhorn Hospital, Siriraj Salaya and Thammasat University Hospital — ward rounds, patient records, lab trends, e-prescriptions, vital-sign monitoring and medical-imaging review, with real-time critical alerts.

FlutterHealthcareREST APINotifications

Freelance · iOS / Android

Nursing Progress

Hospital app for nurses — bed management, nurse notes with edit-conflict handling, patient admission, duty rosters, ward feedback and PDF printing of notes and focus lists. Multi-platform Flutter (mobile, web, desktop) on Firebase Firestore, Realtime Database and MongoDB.

FlutterGetXFirestoreMongoDBPDF

Freelance · Android / iOS / Web / Desktop

Nurse Duty Calendar

Nurse duty-scheduling app — a two-dimensional roster grid with frozen headers, shift-off requests, an admin approval flow and real-time schedule sync. Built with Flutter, GetX and Firestore, redesigned around a clean medical UI.

FlutterGetXFirestoreRealtime Sync

Freelance · Android / iOS

CTAD-100 Attendance

Android biometric time-&-attendance app — face recognition (HLK-AI-10 + ML Kit + TensorFlow Lite) and fingerprint (Suprema), with UVC camera, serial I/O and cloud sync over REST and WebSocket. Written in Java on SQLite.

AndroidJavaML KitTensorFlow LiteCameraXWebSocket

Freewill FX · Android Device

CTAD-100 Firmware (CTFR)

Embedded firmware in C for the CTAD-100 device on RISC-V 64-bit (SG2002/CV181X). Drives face and fingerprint sensors over serial protocols, persists to SQLite and syncs with the cloud through REST and WebSocket commands.

CRISC-VEmbeddedSQLiteWebSocket

Freewill FX · Firmware