Jonathan Koh
Software Engineer (Data) @ Singapore Press Holdings
From software engineering to data engineering — now building the backend systems, pipelines, and workflows that deliver clean, reliable, and usable data at scale.
About
I’m Jonathan, a software engineer specialising in data engineering. Here’s a quick look at -
Professional Experience
NOV 2023 - PRESENT
Software Engineer (Data) · Singapore Press Holdings
Build and maintain real-time data pipelines and AWS ETL workflows, developed a self-service audience segmentation platform replacing GA and Permutive saving six-figure costs and enabling non-technical users to create targeted campaigns. Also contributed to Zaobao’s Web2 transition with a modern frontend/backend.
SEPT 2021 - OCT 2023
Frontend Web Developer · New Creation Church (NCC)
Developed and debugged 30+ SPAs in Webflow using HTML, CSS, and JavaScript over 2 years, while streamlining development by consulting on design feasibility and building reusable, scalable UI components.
MAR 2021 - SEPT 2021
System Analyst · Grab Financial Group (Contract)
Boosted loan recovery rates from 87% to 93% through strategic collection initiatives, recovering an extra SGD$0.33M in 2 months and improving platform efficiency for users.
AUG 2020 - DEC 2020
Data Engineer · Alibaba Group (Contract)
Improved NLP model accuracy by 8% by collecting and preprocessing datasets via web crawling and regex, supporting a successful contract bid.
Featured Projects
coming soon...
Data Warehouse: Structuring Raw Data for Analysis
Designed and implemented a data warehouse to centralize and prepare data for downstream analytics. Built ETL/ELT pipelines for data ingestion, cleaning, integration, and modeling. Optimized the architecture for scalable analytics and business reporting.