Toh Yu Heng
Portrait of Toh Yu Heng

Hello, I'm Toh Yu Heng

Incoming Computer Science & AI @ NUS

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暗香浮动

梅 Plum, winterA faint fragrance, drifting, Lin Bu

疏影横斜

梅 Plum, winterSparse shadows, slanting, Lin Bu

About

I am drawn to unfamiliar ground, to problems that matter to real people, and to building solutions that hold up once others rely on them. I lead a C4I detachment in the Singapore Armed Forces on live operations such as the National Day Parade, and in 2027 I begin Computer Science at NUS, with a focus on artificial intelligence.

My company kept attendance, leave and duty rosters in spreadsheets until I pitched a replacement to command, won approval and led the rollout as sole developer. The Military Integrated Management System now handles all three. In Apollo, my arrangement compiler, a language model drafts the musical lines and a gate rejects anything it cannot vouch for. I would rather a system refuse an output than pass on a confident mistake.

The Work Simulation Program took me into a market and a language outside my own, growing Coca-Cola's healthy portfolio in Indonesia. I fact-checked the brief's own figures, coded local forum discussion and staged the spend behind decision gates, starting with a test against holdout cities. I reported a base case that did not flatter the plan.

At Raffles Institution, I chaired Raffles Interact, later serving as its Service In-charge, and led a patrol in the 01 Raffles Scout Group. In my unit, I train peers and junior platoons to run our equipment. I look for problems, in technology, business or finance, that I have not yet learned to solve.

Now

Building
ApolloA notation-first arrangement compiler, in active development.
Leading
A C4I detachmentPlanning radio links for live national operations.
Next
NUS Computer ScienceWith a focus on artificial intelligence, from August 2027.

Projects

Three selected projects.

空谷幽兰

兰 Orchid, springA hidden orchid in an empty valley

Notation-first arrangement compiler

Apollo

An LLM drafts the lines; a deterministic engine writes every transposed part; a gate refuses anything it cannot vouch for.

To lay out and check a 21-part concert-band chart
under 8 seconds
Passing tests
3,433
Rebuilds, enforced in CI
Byte-identical
Lighthouse score, landing page
1.00
  • Python
  • LLMs
  • Astro
  • three.js / WebGPU
Live window, an interactive replica of apollo.hernie.me

TalentGeist and the National Youth Council

Work Simulation Program

Growing Coca-Cola's healthy portfolio in Indonesia, through a slide deck, market analysis and hand-built HTML ad mock-ups.

Sources cited in the market report
87
Five-year plan, with three decision gates
US$10M
Forum comments coded
477
Hand-built pages of bilingual ad mock-ups
7
  • Market analysis
  • Slide deck
  • HTML ad mock-ups
Scenario
Base
New Zero buyers
0.95M
Servings per buyer a year
21
Net-new, not switched
55%
Cumulative net-new contribution, 2027 to 2031, in Rp billion, against the US$10M budget0100200300US$10M budget, Rp180bn20272028202920302031Rp bn

Powerade 3.5M servings, Frestea and Pulpy 2.0M bottles (Base)

Contribution a year, at scale
Rp37.2bn
Multiple of the yearly spend, at scale
1.0×
Multiple of the US$10M, –
0.8×
Sugar removed from drinks sold, a year
about 380 t

The deck's scenario model, playable. Contribution is 30% of shelf price; runs at 25% and at 60% of a year at scale; US$1 = Rp18,000. Powerade and tea or juice follow the chosen scenario. All inputs are my own assumptions.

Work Simulation Program by TalentGeist and the National Youth Council Singapore. A simulated brief, not affiliated with The Coca-Cola Company.

Serverless PWA, LLM agent and Telegram bot

Military Integrated Management System

The unit administration platform my company uses, with an LLM agent that answers plain-English questions and strips 14 PII fields.

Personnel served
60+
API handlers, with 4-role access control
130+
Telegram bot commands
30+
Scheduled jobs
15+
  • Next.js
  • TypeScript
  • PostgreSQL
  • Redis
  • LLMs
Interactive demo with synthetic data

虚心有节

竹 Bamboo, summerHollow at heart, firm at the joints, humility with principle

Experience

  1. Detachment Commander, 10 C4I Battalion, and Infocomm Specialist, Signals Formation

    Army Command Systems Group, Singapore Armed Forces

    –

    • Led a C4I detachment of a High-Readiness Core unit on live operations for the National Day Parade, National Day Rally and Shangri-La Dialogue.
    • Planned HF/VHF radio links and frequencies, sited antennas, and configured network and IoT equipment.
    • Accountable for the company's communications equipment; trained peers and junior platoons.
    • Pitched a digital administration platform to company command, won approval, and led the rollout as sole developer.

Skills

Languages

  • Python
  • TypeScript
  • SQL
  • C/C++
  • JavaScript
  • HTML/CSS

AI and LLMs

  • LLM tool calling
  • Agentic workflows
  • Claude Code
  • Codex
  • Cursor

Frameworks

  • Next.js
  • Remix
  • Nuxt
  • SvelteKit
  • Astro
  • React
  • Vue
  • Svelte
  • Preact
  • Vite

Data and infrastructure

  • Docker
  • Kubernetes
  • PostgreSQL
  • Redis
  • Git
  • GitHub Actions

Libraries

  • NumPy
  • Pandas
  • Matplotlib
  • Three.js
  • Zod
  • Motion

傲霜

菊 Chrysanthemum, autumnUnbowed by frost, character that outlasts the season

Education

  1. National University of Singapore

    Bachelor of Computing in Computer Science, with a focus on Artificial Intelligence

    –

  2. Raffles Institution

    The Raffles Programme (Integrated Programme)

    SG-GCE A-level: AABB/AA, 86.25/90 RP

    Leadership and CCAs

    Years 1–4
    • Chairperson, Raffles Interact
    • Patrol Leader, Venture EXCO and Test Coordinator, 01 Raffles Scout Group
    Years 5–6
    • Service In-charge, Raffles Interact
    • Ultimate Frisbee

    –

Honours and awards

Hover over or select an award to read about it.

  • Ministry of Education

    The EAGLES is given to students who demonstrate good conduct, strong leadership qualities, service to the community and school, excellence in non-academic activities, and 21st Century Competencies in a consistent and exemplary manner.

  • Raffles Institution

    The Raffles Community Service Award is conferred on a Rafflesian with an exemplary contribution to community work.

  • Ministry of Education

    The EAGLES is given to students who demonstrate good conduct, strong leadership qualities, service to the community and school, excellence in non-academic activities, and 21st Century Competencies in a consistent and exemplary manner.

  • The Singapore Scout Association

    The Chief Commissioner's Award is conferred on the most outstanding and distinctive scouts in recognition of their excellent performance, dedication and service. It represents the pinnacle of achievement for scouts in Singapore and the culmination of their journey as a scout.

  • Raffles Institution

    Awarded in recognition of an invaluable contribution to the school, and in particular to the 01 Raffles Scout Group.

  • Raffles Institution

    Awarded in recognition of an invaluable contribution to the school, and in particular to the Interact Club.

  • Raffles Institution

    The F.I.R.E Award is presented to students who consistently demonstrate outstanding character and exemplify the Rafflesian core values of Fortitude, Integrity, Respect and Enterprise.

  • Raffles Institution

    The ORA Community Service Award is conferred on a Rafflesian with an exemplary contribution to community work.

Certifications

–

  • McKinsey.org

    McKinsey.org Forward Program

    Issued

  • School of Infocomm Technology, Ngee Ann Polytechnic

    Analytics, ML and Cloud Insights

    Issued

  • Cisco

    CCNA: Introduction to Networks

    Issued

  • Cisco

    Ethical Hacker

    Issued

  • AI Singapore

    AI For Everyone (AI4E)

    Issued

Languages

English
Native
Chinese 中文
Native