$ cat ~/about.md

About

Hey, I'm Siddhant

I'm an Engineer at YouTrip, a multi-currency fintech company based in Singapore. I work primarily with Flutter and Dart, but I'll pick up whatever the problem needs — Swift, TypeScript, Python, SvelteKit, Chrome extensions, LLM pipelines. If it solves the problem, I'll learn it.

What I'm building at YouTrip

I own three packages as CODEOWNER: Remittance, Card, and In-App Exchange. I co-led the Mobile Chapter in 2025 and work across 4 repositories.

Some things I've shipped:

YouTrip Family was the most complex. It's a parent-managed child wallet — parents create accounts for their kids via MyInfo KYC, set spending controls, fund wallets, and get real-time alerts. Kids get a physical card and optional app access. I built the token exchange mechanism, child home screen, parent's dependents view, card activation, controls, nudges, and scam/blocked flows. Shipped the nudge implementation from scratch in a single sprint. 13 PRs from Dec 2025 through Apr 2026.

FX Rate Automation is the one I'm most proud of. Two tools built from scratch: a Chrome extension that pulls competitor rates from Visa and Mastercard APIs (22 currency pairs, 44 rates in 20 seconds, straight into Google Sheets), and an AI-powered mobile automation framework using GPT-4o-mini that captures real-time rates from Instarem and Wise across Singapore, Australia, and Thailand. 12+ currencies, 960 daily data points, 100% accuracy, zero infrastructure cost. Runs on GitHub Actions — models, apps, and cron schedules are all configurable without code changes.

Apple Wallet for YouBiz pushed me the furthest outside my comfort zone. End-to-end native iOS implementation in a codebase I'd never touched, with a team I'd never worked with. Swift, PassKit, biometric authentication, the full provisioning flow from iOS Wallet through the backend. I documented the architecture from first principles so anyone after me could pick it up.

API Inspector is small but high-leverage. An on-device HTTP debugging tool that triggers on shake. QA and the rest of the team use it daily.

Outside YouTrip

I worked at Fiserv on PoS machines (ISO-8583), CBDC (Central Bank Digital Currency) initiatives. And I freelance and contributing to FormVerse, a 3D artifact creation platform for the animation and gaming industry, first in India.

What people say

"A level of proactiveness and ownership I have never seen from a dev in my 8 years in the industry. One of our most reliable FE engineers." — Sebastian, Design Lead

"He actively and successfully participated in the exceptionally challenging YT Family feature development, consistently proving he can be trusted to deliver." — Jan, Senior Mobile Engineer

What I care about

I think about systems a lot. Not just code systems, but how information flows, how tools should work, how to make the right thing the easy thing. That's why this website exists. Everything here is a markdown file. LLMs can read it, Git tracks it, I own it. No vendor lock-in, no databases to manage.

Right now I'm focused on:

  1. Cross-package architecture— understanding and shaping decisions end-to-end
  2. Scaling AI tooling beyond FX crawling into test generation, PR review assistance, and debugging
  3. Code reviews that help people grow — architectural feedback, not just correctness checks
  4. Getting into system design discussions earlier, not just implementing the outcomes

Outside work

I ride motorcycles (I have RE Meteor 350, and plan for HD Sportster S). I travel when I can, recently visited SG, MY and TH in Royal Carribean Cruises (Ovation of the Seas; Star Class xD), planning Europe and Iceland for 2027. I cycle and I'm moving toward 100km.

I'm going deep into generative AI workflows for dev-xp.

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