Available for software engineering roles

Katakarn Supserm — Software Engineer

Software Engineer building practical products across backend, web, and mobile.

Backend · Web · Mobile 4+ Years Experience
Katakarn Supserm portrait
Software Engineer Katakarn Supserm

Bangkok, Thailand · Age 25

  • Backend, Web & Mobile
  • Business & Testing
  • Adaptable to New Tools & Technologies
  • Exploring AI Tools

Work Experience

Selected client projects spanning financial services, digital platforms, mobile applications, and event experiences.

Software Developer · Odd-e (Thailand) Co., Ltd. · May 2022 – Present

Oct 2025 – Present Backend Developer

Branch Banking Operations System

Client: TTB Bank

Contribute to modernizing a legacy loan system for branch employees using Java and Spring Boot. Develop and enhance APIs for loan information, balance calculations, payments, and transactions, while implementing business rules, validation, and automated API tests.

Java Spring Boot API Testing
Feb 2025 – Mar 2025 Full-stack Developer

OElection69 Results Web

Client: Dailynews

Developed an election results platform end to end, from ingesting, processing, and storing external election data to building Scala/Spring Boot APIs and React + TypeScript dashboards for results, candidates, constituencies, charts, and maps.

Scala Spring Boot React TypeScript
Aug 2022 – Feb 2025 Full-stack & Mobile Developer

Silpakorn University Smart Plus App

Client: Silpakorn University

Developed a student services platform spanning native iOS and Android apps for class schedules and university services, a React administration portal for managing student information, and a Flutter merchant app supporting coupons, benefits, and in-platform balances.

iOS Android React Flutter Go
Feb 2025 – Mar 2025 Mobile Developer

Mobile Application Design System

Client: Thai Life Insurance

Developed a shared React Native design system for multiple applications and teams, covering reusable components from buttons, inputs, forms, cards, and modals to navigation. Added theme support, accessibility, documentation, and automated tests while aligning implementation with Figma designs.

React Native TypeScript Design System Figma Automated Testing
May 2022 – Jul 2022 Full-stack Developer

SX Expo 2022 Event Platform

Client: ThaiBev

Developed the SX Expo 2022 event platform end to end, spanning a Go backend, React administration portal, and attendee web application. Supported registration, activity schedules, news, maps, booths, and point collection, with administration tools for managing each feature's data and content.

Go React Event Management Admin Portal

About Katakarn

Software Engineer experienced in building digital products across backend, web, and mobile applications. A fast learner who adapts quickly to new technologies and contributes across different parts of a system. Experienced in delivering platforms for banking, education, media, and events, while working collaboratively to turn business needs into practical, maintainable software.

Strengths

Fast learner who contributes across backend, web, and mobile applications, with a strong interest in exploring practical ways to improve development workflows using AI tools.

What I bring

  • Contribute across different parts of a system based on project needs.
  • Turn business requirements into practical product features.
  • Build maintainable APIs, user interfaces, and automated tests.
  • Collaborate effectively and adapt quickly to new domains and technology stacks.
  • Explore AI tools for research, planning, prototyping, and development while reviewing outputs before use.

Skills & Tools

Core stack across software development and infrastructure.

Languages & Frameworks

JavaScript
TypeScript
Java
Scala
Golang
Python
React
Angular
React Native
Flutter
iOS
Android

Backend & APIs

Spring Boot
OpenAPI / Swagger
Postman Tests

Infrastructure & Data

Kubernetes
Docker
Helm
GitLab CI
Argo CD
HAProxy
Istio
Kafka
Redis
Airflow
MinIO
PostgreSQL
MongoDB
Agile / Scrum
Oracle

AI Tools

ChatGPT
Claude
Gemini
Codex
OpenClaw
Gamma
Stitch
Figma Make
Cursor
Anti-Gravity

Let’s build practical software together

I’m open to Software Engineer opportunities across backend, web, and mobile development. Feel free to reach out about your team, product, or technical challenges.

Quick notes

  • Preferred role Software Engineer
  • Location Bangkok, Thailand
  • Work preference On-site, Hybrid, or Remote
  • Languages Thai — Native · English — Working proficiency