Tan Jian Xin Portfolio

Nice to meet you

About Me

A little story about where I came from, and why I code.

Family name

Tan

Dedication

"Daddycation"

Given name

Jian Xin

Hello! I'm Jian Xin, a 23-year-old undergraduate from Singapore Institute of Technology–University of Glasgow Computing Science.

I was born in a small town called Bukit Mertajam, Penang, Malaysia. I transferred schools twice because of my family situation, and then when I was 12, my family moved to Singapore and eventually got the citizenship. Most of my family are in Singapore, while my brother, who has a sucessful career as a teacher, remained in Malaysia.

During secondary school, I bought my first and very own gaming console, the Playstation 4, using my hard-earned part-time salary. After that, I played games with it, and I was fascinated by the technologies used in games, particularly the programming part. I was amazed by how typing in a keyboard can make so many masterpieces. This sparked my interest in programming.

I chose chemical engineering for my diploma course, and long story short, I made a wrong choice. After interning and working in a chemical plant for some time, I realised that I did not enjoy the work, and I wanted to pursue something that I was more passionate about, computing. I chose to take a gap year and worked on my programming skills, I taught myself a few programming languages, concepts, and eventually got accepted by SIT-UoG for a degree in Computing Science.

My dream now is to become an independent and knowledgeable software engineer. I am very grateful for the opportunity to study Computing Science, and I will work hard for it!

Where I've been

My Experiences

From research labs to logistics — building skills along the way.

Finance Decision Intelligence Intern

Accountant-General's Department • Sep 2026 - Apr 2026

Collaborated with the finance team to develop a Python-based web application using Streamlit and Flask to streamline financial analysis workflows.
Implemented a user-friendly interface for data visualization and interactive exploration of financial KPIs.
Built a robust backend API to handle data processing and integration with external financial systems.
Optimized performance and security measures to ensure smooth operation and data integrity, achieving a 95% satisfaction rate from the users.

Student Research Assistant

SIT • Sep 2024 - Aug 2025

Collaborating with research faculty to model vessel movements at sea using FlexSim simulation software.
Designing, testing, and refining simulation models to study maritime traffic patterns and vessel interactions.
Analyzing simulation results to identify bottlenecks and optimization opportunities in sea transportation systems.
Collecting, processing, and integrating data on maritime operations and environmental conditions.
Participating in regular project meetings and brainstorming sessions with the research team to ensure smooth progress.

Finance/Logistics Specialist

Singapore Armed Forces • Aug 2021 - Aug 2023

Developed and implemented supply chain strategies, and achieved 95% success rate in delivering ad-hoc items/services requested by the unit.
Addressing and resolving any issues or disruptions in the supply chain, such as delays, shortages, or damaged goods, achieving 90% unit and supplier satisfaction rate.
Control, oversee and disseminate tasks to subordinates when there are multiple ad-hoc tasks available; served as the middleman between officers and NSFs.

Built with curiosity

My Projects

Drag, tap the arrows, or just watch them rotate — here’s what I’ve been building.

Industry · Full-stack

Digital Document Printing System

Built for Hong Leong Assurance with a team of ten over eight months — an end-to-end digital document printing system delivered with a full SDLC, system design, and an Agile framework.

Industry collaboration with Hong Leong Assurance
Team of 10 across an 8-month delivery cycle
Full SDLC, system designs, and Agile practices in place

SDLC · Agile · System Design · Team Project

Github Repo

IoT · Hardware

IOTForestCam

Autonomous forest camera mesh on ESP32-S3 for SIT CSC2016. Leaves, relays, and a gateway harvest images over a LoRa + WiFi hybrid network.

LoRa AODV mesh + Bully election control plane
CoAP Block2 transfer & FreeRTOS dual-core firmware
Deep-sleep power management on LILYGO T3-S3

ESP32-S3 · LoRa · CoAP · PlatformIO · Python

Github Repo

Full-stack · Database

Pikapi

A Pokémon team-builder and battle app from our group database project — filter Pokémon, assemble squads, and fight AI teams under cost constraints.

Advanced filters for building and editing teams
AI battles with cost limits, profiles, and battle logs
SQL + NoSQL persistence (MongoDB) with Redis sessions

Python · Flask · MongoDB · Redis · SQL

Github Repo

Mobile · Commerce

POSGO

A React Native point-of-sale app for small businesses — menus, carts, and order history in one place.

Built with React Native and Expo
Add, edit, and remove menu items on the fly
Multi-cart workflow for concurrent customers

React Native · Expo · JavaScript

Github Repo

Web · Personal

Web Portfolio

You’re looking at it. Half résumé, half playground — the top is professional, the bottom is whatever I feel like sharing.

Hand-crafted HTML, CSS & JavaScript
Scroll transitions, carousels, and little easter eggs
Personality-first design (Waku Waku!)

HTML · CSS · Tailwind · Flickity

Web · Algorithms

Flight Route Planner

Find an optimal path between airports on a live map — pick origin and destination, then optimize for distance or price with a connection limit.

Searchable airport origin & destination pickers
Route optimization by distance or price
Max-connections control with map visualization

JavaScript · Maps · Graph routing

Github Repo

Web · Maps

GeoPointer

A GeoGuessr-style game for the Google Photorealistic 3D Maps Challenge — explore the world, then drop your pin.

React app with Google Maps Platform APIs
Photorealistic 3D maps, Places, Street View & Routes
Built for the Google Maps Challenge

React · Google Maps · JavaScript

Github Repo Live Site

Pokédex loading…

Skills & Tools

Languages, frameworks, and tools I reach for when building things.

Python

JavaScript

Java

C#

Kotlin

Rust

R

C

Assembly

React Native

NumPy

HTML

CSS

SQL

MariaDB

MongoDB

Git

Docker

Kubernetes

Envoy

Kafka

RabbitMQ

Linux

Pandas

PyTorch

NodeJS

TypeScript

MS Word

MS Excel

MS PowerPoint

FlexSim

Waiting for more skills… like a Pokédex

I can talk

Spoken Languages

From English and Mandarin to dialects at the dinner table.

English

Native/Bilingual

Chinese

Native/Bilingual

Malay

Intermediate

Japanese

Intermediate

Hakka

Advanced

Cantonese

Advanced

Hokkien

Advanced

Teochew

Intermediate

Off the clock

My Hobbies

Games, code, anime, hoops, gym — the usual chaotic mix.

Gaming

Yeah, like every other boy, I like to play games — FPS (Valorant), RPG (Final Fantasy), Soulslike (Elden Ring), MOBA (League of Legends). Up top is Final Fantasy XV, the first story I ever finished.

Coding

My love for coding started with games — after FFXV on my PS4, I wanted to join Square Enix someday. Creating impactful things by typing on a keyboard still gives me a huge sense of satisfaction.

Anime

In case the top page wasn’t clear enough, yes — I watch a lot of anime.

Basketball

I played for my school team and used to ball with friends a few times a week. Now my back needs a good crack, so I rarely play unless someone asks. So… you wanna play? :)