Celes Chai Jia Xuan - Computer Science and Engineering

EDUCATION

National University of Singapore Singapore

Bachelor of Computing in Computer Science Jul 2023 – May 2027

GPA: 4.55/5.00 | Member of NUS College (Honours)
Relevant Coursework: Data Structures and Algorithms, Operating Systems, Parallel Programming, Object-Oriented Programming, Software Development Lifecycle, Media Computing and Signal Processing, Linear Algebra, Calculus, Artificial Intelligence and Machine Learning

Programming Languages:Python, Java, C++, JavaScript, TypeScript, Go
Web & Mobile Development:React.js, Next.js, Express.js, RESTful APIs, Expo (iOS/Android), HTML, (Tailwind) CSS
Database & Cloud:SQL, MongoDB, PostgreSQL, DynamoDB, AWS (EC2, Lambda), Azure Speech Service, Docker
Hardware & Embedded:Microcontrollers, Firmware Development, PCB Design, Logic Analyzers, Waveform Generators, Circuit Diagnostics
Other:LaTeX, Matplotlib, Spring Security, Docker Compose, WinSCP, Task Scheduler, Git/GitHub, Integration Testing, PowerShell, VBA, Spring

VisibleBits May 2025 – Nov 2025

Demonstrated prototype at The 31st Annual International Conference on Mobile Computing and Networking 2025 to industry professionals and renowned researchers
Represented NUS as the only undergraduate author at MobiCom 2025
Developed new visible light communication (VLC) system completed with Li-Fi transmitter, receiver, driver, and transmission protocol
Received great feedback from Dr. Victor Bahl and all chairs of MobiCom on research methodology and potential
Customised augmented reality application that circumvents lack of API support for Meta Quest 3 by leveraging the serial port
Implemented custom high power LED driver involving SMT soldering and PCB design

Video demonstration coming soon

Student Researcher -- System Design, Augmented Reality, Embedded Systems, Networking, VLC Jan 2025 – Nov 2025

WEISER Lab, National University of Singapore (Supervisor: Dr. Ambuj Varshney) Singapore

Developed the VisibleBits system mentioned in the Projects section
Prototyped hardware for device drivers and hardware component interfacing
Troubleshooted hardware issues using logic analyzers and waveform generators for signal analysis

Founding Engineer Jun 2025 – Present

SakuraSpeak Singapore

Developed a language learning platform that provides personalized language learning experiences through conversations, serving 900 subscribers and generating more than USD10k monthly revenue
Introduced a dynamic search algorithm for language learners to search in multiple languages, receive both dictionary and cultural content, to learn Japanese organically
Designed familiarity scoring and recommendation algorithm, improving user engagement and retention through a spaced repetition system (SRS)
Implemented backend pipelines for LLM integration, enabling automated user-level assessment, contextual understanding, and intelligent estimation of unavailable data
Established technical standards, documentation, and processes to streamline future team onboarding and ensure operational consistency
Led product development and technical architecture decisions, implementing scalable systems using DynamoDB, Express.js, and AWS Lambda

Introduction to AI and Machine Learning Teaching Assistant Aug 2025 – Nov 2025

NUS CS2109S Singapore

Delivered weekly tutorials on AI/ML concepts, guiding students through coding exercises, algorithms, and applied problem-solving
Graded assignments, analyzed common errors, and provided targeted feedback to improve student understanding of technical concepts
Incorporated survey feedback and performance metrics to iterate on instructional material for improved clarity and engagement
Developed and maintained AI/ML problem sets, collaborating with lead instructors to improve content clarity and align assignments with course learning outcomes

Cyber Transformation Intern May 2024 – Aug 2024

KPMG Singapore

Conducted extraction and delivery of logs for Singapore's Government on Commercial Cloud migration project
Demonstrated strong problem-solving skills by proposing and implementing PowerShell, Task Scheduler and VBA scripts to automate server maintenance, data extraction, and file management tasks
Optimized processes through automation initiatives, completing log migration project originally requiring team of 4 alone within same timeframe
Documented technical procedures and created comprehensive user guides for client support team handover

Vice President, Junior College Executive Committee Apr 2021 – May 2022

Singapore Ministry of Education Singapore

Led team of 11 members, collaborating with MOE officers and managing project deliverables during pandemic
Adapted escape room event to virtual format using Gather Town, expanded capacity and publicity reached 2000+ Instagram accounts
Spearheaded VLog bank initiative preserving project impact, accumulating over 1900 views
Facilitated sprint planning for virtual events

SigMobile Travel Grant – Awarded S$1,000 to support travel expenses for attending the MobiCom 2025 Conference in Hong Kong.
ASEAN Undergraduate Merit Scholarship – Covers full subsidised undergraduate tuition fees plus S$5,800 annual living allowance, S$3,000 annual accommodation allowance, and a one-time S$1,750 computer grant.
REx Research Grant – Awarded up to S$2,500 to support research expenses by NUS Office of the Deputy President and Provost.
ASEAN Scholarship for Pre-University – Covers annual allowance with hostel accommodation, settling-in allowance, return travel for Malaysians, school and GCE A-Level exam fees, plus subsidised medical and accident insurance.

English (Native/Bilingual), Chinese (Native/Bilingual), Malay (Fluent)