Vincent Wesley

About

About Me

Software Engineer specializing in modern web platforms, data architecture, and applied AI. I focus on turning complex operational data into clean, maintainable web systems and actionable dashboards. Always searching for the simplest, most reliable solution to real-world problems.

Role

Software Engineer

Bachelor of Science (Information Systems)

Singapore Management University · Awarded 3 June 2025

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What I Do

What I Do

• Software EngineeringBuilding reliable, maintainable systems

  Focusing on clean full-stack architecture, API integration, and performant web applications using TypeScript, React, and modern backend frameworks.

• Data and AnalyticsTurning data into decisions

  Designing data pipelines, dashboards, and analytical models using Python, Pandas, and SQL to extract actionable operational insights.

• AI EngineeringApplying AI to real problems

  Integrating LLMs, vector search, and intelligent workflows into production applications to solve concrete user problems.

Project Showcase

MetaLens VGC

metalensvgc.pages.dev

A cross-filtering metagame dashboard for Pokémon Champions VGC 2026, built from real tournament and ladder data.

• Every number is aggregated in the browser from real tournament team sheets and ladder data.
• Fully cross-filtering, with filter state shareable via the URL.
• Data refreshed weekly by a GitHub Actions workflow with failure alerting.

Live siteView liveView project

Projects

Projects

All projects

Code Snippets

Featured Code Snippets

• Wilson Score Interval for Win-Rate Confidence

  JavaScript

  MetaLens VGC (public/js/lib/stats.js). Win-rate bounds that stay honest on small samples (a 3-0 record reads as 44-100%, not 100%), plus meta diversity as the effective number of species: exp of the Shannon entropy of usage counts.

  // Wilson score interval for a binomial proportion k/n, as [lo, hi] fractions.
  export function wilson(k, n, z = 1.96) {
    if (n === 0) return [0, 0];
    const phat = k / n;
    const z2 = z * z;
    const denom = 1 + z2 / n;

  View full snippet

  Wilson Score Interval for Win-Rate Confidence

  Close

  MetaLens VGC (public/js/lib/stats.js). Win-rate bounds that stay honest on small samples (a 3-0 record reads as 44-100%, not 100%), plus meta diversity as the effective number of species: exp of the Shannon entropy of usage counts.

  // Wilson score interval for a binomial proportion k/n, as [lo, hi] fractions.
  export function wilson(k, n, z = 1.96) {
    if (n === 0) return [0, 0];
    const phat = k / n;
    const z2 = z * z;
    const denom = 1 + z2 / n;
    const center = phat + z2 / (2 * n);
    const adj = z * Math.sqrt((phat * (1 - phat)) / n + z2 / (4 * n * n));
    return [(center - adj) / denom, (center + adj) / denom];
  }
  
  // exp(Shannon entropy) of usage counts, normalized to proportions.
  export function effectiveSpecies(counts) {
    const total = counts.reduce((a, b) => a + b, 0);
    if (total <= 0) return 0;
    let h = 0;
    for (const c of counts) {
      if (c <= 0) continue;
      const p = c / total;
      h -= p * Math.log(p);
    }
    return Math.exp(h);
  }

• One Slot Test for Cross-Filter Chips

  JavaScript

  MetaLens VGC (public/js/lib/aggregate.js). Positive Pokémon chips are ANDed into a single per-Pokémon test, so "Rillaboom + Life Orb" keeps teams with a Rillaboom holding Life Orb; negative chips drop any team with a match.

  /** The slot test built from the positive Pokémon chips, or null if there are none. */
  function slotTest(chips, dex, { keys = true } = {}) {
    const pos = chips.filter((c) => !c.neg);
    const keySet = keys ? new Set(pos.filter((c) => KEY_KINDS.has(c.kind)).flatMap(chipKeys)) : new Set();
    const attrs = pos.filter((c) => ATTR_KINDS.has(c.kind));
    if (!keySet.size && !attrs.length) return null;

  View full snippet

  One Slot Test for Cross-Filter Chips

  Close

  MetaLens VGC (public/js/lib/aggregate.js). Positive Pokémon chips are ANDed into a single per-Pokémon test, so "Rillaboom + Life Orb" keeps teams with a Rillaboom holding Life Orb; negative chips drop any team with a match.

  /** The slot test built from the positive Pokémon chips, or null if there are none. */
  function slotTest(chips, dex, { keys = true } = {}) {
    const pos = chips.filter((c) => !c.neg);
    const keySet = keys ? new Set(pos.filter((c) => KEY_KINDS.has(c.kind)).flatMap(chipKeys)) : new Set();
    const attrs = pos.filter((c) => ATTR_KINDS.has(c.kind));
    if (!keySet.size && !attrs.length) return null;
    return (mon) => (!keySet.size || keySet.has(mon.k)) && attrs.every((c) => monMatchesAttr(mon, c, dex));
  }
  
  export function filterTeams(teams, filters = {}, chips = [], dex) {
    const { tiers, place, from, to } = filters;
    const slot = slotTest(chips, dex);
    const hasAttr = chips.some((c) => !c.neg && ATTR_KINDS.has(c.kind));
    return teams.filter((team) => {
      if (tiers && tiers.length && !tiers.includes(team.tier)) return false;
      if (place === 'topcut' && !team.topCut) return false;
      if (place === 'top8' && !(team.placing != null && team.placing <= 8)) return false;
      if (place === 'winner' && team.placing !== 1) return false;
      if (from && team.date < from) return false;
      if (to && team.date > to) return false;
      for (const c of chips) {
        const has = ATTR_KINDS.has(c.kind) && !c.neg ? true : teamHasChip(team, c, dex);
        if (c.neg ? has : !has) return false;
      }
      return !hasAttr || team.mons.some(slot);
    });
  }

See all snippets

GitHub

GitHub Activity

Experience

Work Experience

1. Jan 2026 – Present

   Software Engineer

   Ong&Ong Pte Ltd

   • Architected and developed full-stack in-house software applications, interactive dashboards, and web widgets to optimize internal workflows for architectural and design teams
   • Integrated custom Generative AI solutions and workflow automation tools to streamline project documentation, data querying, and production processes
   • Managed the end-to-end software development lifecycle, gathering requirements from cross-functional teams to deliver secure, scalable internal digital solutions
   • Refactored existing codebases and optimized API performance to ensure high availability and seamless data management across company systems

2. May 2024 – Aug 2024

   Summer Intern

   Health Promotion Board

   • Leveraged tech to engage youth via hackathons and interactive modules
   • Curated digital content and optimized its delivery for youth health campaigns
   • UX testing and co-developed enhancements for health apps (H365)

3. Jun 2023 – Aug 2023

   Summer Intern

   PT Pancaseraya Permai · Indonesia

   • Developed backend components of an Employee Shift Management System using PHP Laravel and MySQL
   • Collaborated on frontend development of the system's mobile app using Flutter
   • Assisted IT operations including computer troubleshooting, server backup monitoring, and face scan directory maintenance

Full experience, education and certifications

Skills

Skills

Languages

Languages

Education

Education

1. Aug 2021 – Jul 2025

   Bachelor of Science (Information Systems), Major in Business Analytics

   Singapore Management University (SMU) · Singapore

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2. Jul 2018 – May 2021

   Darma Yudha Senior High School

   Science Program · Indonesia

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Achievements

Achievements

All achievements with details

Certifications

Certifications

View all certifications (24)

Exco

Exco

• 2023 – 2024

  Head

  SMU Chess Club

• 2023 – 2024

  Honorary General Secretary

  SMU Intellectual Sports

• 2018 – 2021

  Exco

  Math Club

All Exco roles with details

Interactive

Interactive

Small interactive widgets I built for fun. Each one loads only when you scroll to it.

See all interactive widgets

Blog

Latest Writing

• First Run and Bun win in ASEAN

  26 Oct 2026

  I won Run and Bun, the first win in ASEAN, and I'm the number 1 Nuzlocker in Singapore.

  Read post

Contact

Get in Touch

The quickest way to reach me is email.

Singapore time 10:57 SGT · Fri, 6 Nov 2026

[email protected]

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