Hello, I'm

Keiffer Tan

Software Developer

GIS / AutoCAD Technician

Building modern web applications and spatial data solutions. Bridging the gap between code and cartography.

About Me

I'm a software developer and GIS/AutoCAD technician with experience building full-stack web applications and spatial analysis workflows. I work across the stack with React, Next.js, and TypeScript on the development side, and ArcGIS, QGIS, and AutoCAD on the mapping and design side.

I enjoy projects that sit at the intersection of technology and place — turning geographic data into meaningful, interactive tools that help people understand and navigate the world around them.

Skills

Software Development

Full-stack development with modern JavaScript frameworks, type-safe APIs, and relational databases.

React

Next.js

TypeScript

JavaScript

Node.js

Python

PostgreSQL

REST APIs

Git

HTML / CSS

GIS / AutoCAD

Spatial data management, cartographic production, and technical drafting across desktop and web GIS platforms.

ArcGIS

QGIS

AutoCAD

ArcGIS Pro

ESRI Suite

Spatial Analysis

Remote Sensing

CAD Drafting

Geodatabases

Map Layout

Projects

A selection of work across software and geospatial development.

bsddConverter

A desktop application that allows users to convert a filled out data dictionary spreadsheet into a JSON file format.

Python

Code

Personal Bakery Website

One of the first ever projects I did in my academic career. Building an imaginary business, which is a future goal of mine to open up my own bakery! :)

JavaScript

HTML

CSS

Code Live

WSDOT Spatial Join Dashboard

A web application with a React frontend. The purpose of the dashboard is to provide a user-friendly interface for comparing the spatial join data of roadway elements and assets.

React

Node.js

SQL Server

MongoDB

Get in Touch

Open to new opportunities and collaborations. Feel free to reach out through any of the platforms below.

GitHub