Atlas HRMS
Technical Lead · NUS Fintech Society
Jan 2024 – Jan 2025
Led the engineering of the society's Human Resource Management System, with a Vite frontend and a Django backend.
- Vite
- Django
- Python
- JavaScript
NUS Mathematics · graduating May 2027
Xinming Lu 吕心铭
Software & Firmware Engineer
I build software from the microcontroller up to the browser — firmware in C++, backends in Python and Ruby, and interfaces in React.
Singapore
- daily active users on the product I shipped to at NodeFlair
- 20k+daily active users on the product I shipped to at NodeFlair
- lines of code edited in the NodeFlair codebase
- 60k+lines of code edited in the NodeFlair codebase
- Bluetooth devices feeding each gateway I wrote firmware for
- 12Bluetooth devices feeding each gateway I wrote firmware for
- developers in the software group I headed
- 50developers in the software group I headed
About
Engineer first, mathematician by training
I'm a Mathematics undergraduate at the National University of Singapore, graduating in May 2027, with industry experience across web products and embedded IoT systems. I'm comfortable in Python, JavaScript, C++, Java and Ruby, and happy to pick up whatever stack a project calls for. I solve programming puzzles for fun.
I grew up in Singapore speaking Mandarin at home, so I'm fluent in both English and Mandarin. I also picked up working Spanish during a year living in Santiago, Chile.
Experience
Where I've worked
Software / Firmware Engineer · Manglar Labs
Aug 2025 – Jul 2026
Santiago, Chile · NUS Overseas Colleges (NOC) programme
- Built a theft-recovery tracker on Quectel EG91 and LC67-L modules, with C++ firmware that estimates distance over Bluetooth to detect when the device leaves its zone and then reports over the cellular network.
- Wrote firmware for a Bluetooth gateway that collects advertisement data from 12 devices and uploads it to the central backend platform.
- Built the IoT monitoring platform used across the company's projects with Grafana and MQTT, letting clients watch points of interest in the field and control devices.
- Developed a JavaScript interface for the Bluetooth gateway so field operators can monitor and control devices on site.
- Built an automatic irrigation system: an ESP32 reads a soil-moisture sensor and switches the water pump on when moisture falls below a threshold.
- C++
- ESP32
- Bluetooth
- Quectel EG91
- MQTT
- Grafana
- JavaScript
Software Engineer · NodeFlair
Feb 2023 – Oct 2023
Singapore
- Worked on a ReactJS and Ruby on Rails web application with over 20,000 daily active users.
- Built a three-page onboarding form, integrated with the backend, that new users complete after signing up.
- Worked on a résumé editor with rich-text formatting and PDF parsing, including asynchronous components that keep users engaged while their upload is parsed.
- Fixed bugs across the codebase, including a web scraper — more than 60,000 lines of code edited.
- React
- Ruby on Rails
- PDF parsing
- Web scraping
National Service · Singapore Army
Apr 2021 – Feb 2023
Singapore
- Automated form filling with VBA to cut operational overhead, and wrote a Python Telegram bot that tracks training records to improve safety.
- Python
- Telegram Bot API
- VBA
Portfolio
Projects & leadership
RHApp
Head · Raffles Hall Developers
May 2024 – Apr 2025
Headed the hall's 50-member software group and its facilities-booking app. Ran weekly full-stack training for new members, managed the Dockerized backend on DigitalOcean and set up CI/CD for the frontend on Vercel.
- React
- Flask
- Docker
- DigitalOcean
- Vercel
RZone 2.0
Head · Raffles Hall ComMotion (IT)
May 2024 – Apr 2025
Led the 16-member technical support team and the core team behind the hall's CCA records application. Administered the iMacs and NAS serving 700 residents, and opened the NAS beyond the NUS intranet with up to 25× faster connections.
- PHP
- NAS
- Networking
- System administration
Athena
Developer · Singapore Army
2021 – 2023
A Telegram bot that tracks training records, built to improve training safety.
- Python
- Telegram Bot API
Education
National University of Singapore
Bachelor of Science (Honours) in Mathematics
Aug 2023 – May 2027 (expected)
- Second Upper Class Honours standing.
- Undergraduate research project on applying Monte Carlo methods in finance.
- NUS Overseas Colleges programme, Santiago, Chile (2025 – 2026): a year-long engineering internship alongside entrepreneurship coursework.
Relevant coursework
Computing
- CS2030Programming Methodology II
- CS2040CData Structures and Algorithms
- HS1502Conceptual Introduction to Machine Learning
Mathematics
- MA1100TBasic Discrete Mathematics
- MA2001Linear Algebra I
- MA2101Linear Algebra II
- MA2002Calculus
- MA2104Multivariable Calculus
- MA2108Mathematical Analysis I
- MA3252Linear and Network Optimisation
Probability, Statistics & Finance
- MA2116Probability
- ST1131Introduction to Statistics and Statistical Computing
- QF1100Introduction to Quantitative Finance
Skills
What I work with
Languages
- Python
- JavaScript
- C++
- Java
- Ruby
- PHP
Web
- React
- Ruby on Rails
- Django
- Flask
- Vite
- Gatsby
Embedded & IoT
- ESP32
- Bluetooth
- Cellular (Quectel)
- MQTT
- Grafana
Infrastructure
- Docker
- DigitalOcean
- Vercel
- CI/CD
- NAS administration