Hi, I'm

Punya Tumli

Senior Full-Stack Software Engineer

Building enterprise applications, business workflows, and system integrations — from requirements and solution design through frontend, backend, and production support.

punya.t@eddydevsolution.com
083-214-0973
617/330 อัศสการ คอนโดน สวนหลวง สวนหลวง กทม 10250

About Me

Full-stack engineer with experience across enterprise web systems: React/C#/.NET application development, REST API design, PostgreSQL/SQL database work, and production troubleshooting. Comfortable owning a problem from requirement gathering through solution design, implementation, and post-release support.

Core stack

.NET

PHP / Laravel

Rust

Elixir

JavaScript

TypeScript

Download Resume

What I Do

Full-Stack Development

Enterprise web applications end to end — React/Svelte on the frontend, C#/.NET/Elixir on the backend, with REST APIs and WebSocket connecting the two.

System Integration

Connecting CRM, ERP, and legacy systems — API traffic optimization, data-compatibility fixes, and features like user management and pallet calculation built into an existing platform.

Production Support

Troubleshooting escalated issues from support teams and keeping systems stable after release, not just at launch.

End-to-End Communication

Coordinating the full chain from client to delivery — talking directly with clients, PMs, BAs, and SAs to turn requirements into something the dev team can build, and mentoring junior developers through code review along the way.

Skills

Technical Skills

Core

C# / .NET starstarstarstarstar
PHP / Laravel starstarstarstarstar
Rust / Elixir starstarstarstarstar
JavaScript / TypeScript starstarstarstarstar

Frontend

Svelte / SvelteKit starstarstarstarstar
React starstarstarstarstar
MUI starstarstarstarstar
HTML / CSS starstarstarstarstar

Data

PostgreSQL starstarstarstarstar
SQL Server starstarstarstarstar
MySQL / MariaDB starstarstarstarstar
OCR (Optical Character Recognition) starstarstarstarstar

Delivery

REST APIs starstarstarstarstar
WebSocket starstarstarstarstar
RHEL 10 starstarstarstarstar
Debian 9 starstarstarstarstar
Docker / Compose starstarstarstarstar
Git / GitLab CI/CD starstarstarstarstar

AI-Assisted Development

Cursor starstarstarstarstar
Claude Code starstarstarstarstar
GitHub Copilot starstarstarstarstar

Professional Skills

Team Work starstarstarstarstar
Communication starstarstarstarstar
Creativity starstarstarstarstar
Project Management starstarstarstarstar

Experience

Siamrajathanee Public Company Limited (Outsourced)

2025-12 – Present

Senior Developer (Contract, SO Outsourcing)

Building a large-scale Consent Management system for a Thai bank client, currently in the implementation phase ahead of go-live.
Designing for a target production traffic scale of roughly 2 million records per month.

SCG Packaging

2024-12-01 – 2025-11-30

Full-Stack Developer (Contract via GetLinks)

Built user management APIs and a pallet calculation feature within the existing CRM.
Provided escalated technical support and troubleshooting for cases from the Support Team.

Metro Systems Corporation Public Company Limited

2018 – 2024

Full-Stack Developer → Senior Developer

Started in support and digital-operations work before moving into full-stack development.
Built enterprise web applications with React on the frontend and C#/.NET on the backend.
Designed and implemented REST APIs, worked with SQL/PostgreSQL, and handled production troubleshooting.
Mentored junior developers through code reviews, and worked directly with clients and cross-functional teams to gather requirements.

Chang International Circuit, Buriram

2017 – 2018

Web Master

Managed and developed the official website, including a news system built on Yii2.
Handled domain configuration and web hosting for the site.

Education

Lampang Rajabhat University

2010 – 2017

B.Sc. Software Engineering

Get in Touch

The fastest way to reach me is email — it opens your own mail client, so nothing here depends on a server that could silently fail.

punya.t@eddydevsolution.com