Portfolio · 2026

Dacharat
Pankong.

Senior backend engineer at LINE MAN Wongnai. I build food delivery systems at scale — pricing, ordering, and the paths millions of orders run through every day.

RoleSenior Backend Engineer
CompanyLINE MAN Wongnai
Based inBangkok, Thailand
StackGo · MongoDB · Kafka · Redis · gRPC
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01 · About

Backend engineer, builder, occasional tinkerer.

Portrait of Dacharat Pankong

I'm Dacharat Pankong — friends call me Jack. I'm a software engineer based in Bangkok, focused on building backend systems that scale.

I started out studying computer engineering at Kasetsart University and found myself drawn to the messy, satisfying work of turning ideas into shipped products. My path began with internships across three very different worlds — an eyewear e-commerce startup, a deep learning research lab in Germany, and the Growth squad at Wongnai.

Today I'm a Senior Backend Engineer at LINE MAN Wongnai, working on the food delivery platform. I care most about writing code that's clear enough to delete, systems that fail loudly, and products that respect the people using them.

What I work with
Languages
GoTypeScriptPythonJava
Backend
gRPCRESTGraphQLMicroservicesDistributed systems
Data
MongoDBRedisMySQLPostgreSQL
Messaging
KafkaRabbitMQ
Tooling
DockerKubernetesGitGitHubGitLab
02 · Work

Where I've been shipping things.

From a Growth-squad intern to a Senior Backend Engineer on Thailand's largest food delivery platform.

2022 — Present

Senior Software Engineer, Backend

Building the backend powering LINE MAN's food delivery platform — pricing, ordering, and the systems millions of orders run through every day. Promoted to Senior in 2022.

  • Introduced a dedicated Price Engine to LINE MAN services with the team, replacing scattered pricing logic with a single source of truth.
  • Delivered the คนละครึ่ง (Half-Half) government co-payment integration on the user side of the LINE MAN app.
  • Led an order-creation latency effort, bringing p99 from >5s down to <500ms on one of the platform's hottest paths.10×
GoMongoDBKafkaRabbitMQRedisgRPC
2019 — 2022

Software Engineer, Backend

Wongnai Media

Joined Wongnai full-time out of my internship on the Growth squad. Stayed on through the LINE MAN Wongnai merger and moved to the food delivery org.

JavaSpringPythonTypeScriptgRPCGraphQLMySQL
Earlier · Internships
2019Backend Intern, Growth squadWongnai MediaJava · Spring · gRPC · GraphQL
2019Deep Learning Research InternOffenburg University, GermanyPython · TensorFlow · Keras · Django
2018Full-stack InternGlazziqRuby on Rails · React · PostgreSQL
03 · Projects

Things I've built along the way.

A handful of projects from school, internships, and weekends — kept here because each one taught me something I still use today.

Weekly Workout Planner cover
Featured · 2026

Plan your week, track muscle volume, stay consistent.

A side project born out of my own gym habit — a tool to plan weekly training splits and actually see where the volume lands. Exercises are added per day, sets and reps feed a live muscle-volume chart with front/back body visualisation that highlights under- and over-worked groups against a 10–20 sets/muscle/week target. Supports sharing, CSV export, and dark mode.

Next.jsReactTypeScriptTailwind CSS
Side project
View on GitHub
2019

Otopaholic

A full-stack e-commerce platform for Thailand's OTOP (One Tambon One Product) program. I worked across the stack — React on the front, Node/Express and MongoDB on the back — and learned more about making real product decisions than I did about code.

ReactNode.jsExpressMongoDB
2019

Face Emotion Result

A computer vision pipeline that detects faces in real time, classifies emotional state, and streams results to a Postgres-backed dashboard. Built on top of an existing university research project — I extended the model serving layer and wrote the web app that visualises aggregate emotion data as time-series graphs.

PythonDjangoTensorFlowKerasOpenCVPostgreSQL
2018

IP Subnet Calculator

A web tool for calculating IP subnets, network masks, and host ranges. Small in scope, but the first time I felt the satisfaction of shipping something other people actually used.

ReactFirebase
2018

Math Master Game

A desktop math game built in Java + JavaFX with MySQL for score tracking. My first real encounter with OOP beyond classroom exercises — inheritance, polymorphism, and a lot of refactoring.

JavaJavaFXMySQL
2018

Took-took 4.0

A group project that pushed me to work with hardware sensors and real-time data for the first time.

JavaScriptHTMLCSSIoT
04 · Contact

Got something interesting to build together?

Open to chats about backend, distributed systems, and food.dacharat.p@ku.th