Toronto, Canada · Software Engineer

I build the desktop Citi's traders run on. For fun: everything else.

Yatish Gautam — VP at Citi, building Citi Desktop, the platform the trading floor runs on. After hours: products people actually use.

See the work → LinkedIn GitHub

Open to interesting conversations

0+ years shipping software
0 platforms per side project: web, cloud, mobile, desktop
0% mobile user growth as a solo mobile eng
0% uptime on AWS microservices I built (the 0.01% haunts me)

01 Selected work

In production · real supermarkets · AI ingestion

Umshai — retail software that reads your invoices

Retail ops for real supermarkets. Snap a photo of a supplier invoice — Claude vision extracts the line items, fuzzy-matches the catalog, and queues the uncertain for review. Photos, PDFs, POS exports: one pipeline, on AWS, with repeat layouts cached so they cost zero tokens.

  • Claude vision
  • React + Vite
  • Express + Prisma
  • Postgres
  • React Native
  • AWS
umshai — ingest
›
⟳ reading with Claude vision…
⟳ extracting line items → {sku, qty, landed cost}
⟳ fuzzy-matching against catalog…
✓ 34 items matched · 2 sent to review
# a real store ran this today

Not demos — shipped products with real users, each one web + cloud + mobile + desktop.

01Live · iPhone + Mac + Web

Ember — getember.space ↗

A planner for ADHD brains — "It's 11 a.m. and you've done none of it. Good. Start from here." Local-first, offline, one domain model across desktop, web, and iOS.

  • Electron
  • SwiftUI
  • Node + Postgres
  • Local-first sync
  • AI coach
02From first principles

Transformers, by hand

Attention, KV caches, embeddings — built from scratch in PyTorch on Apple Silicon. The API is the easy part.

  • PyTorch
  • MPS
  • nn.Module
03Full-stack

HeartSync

Cross-cloud notifications — AWS SNS meets GCP Pub/Sub at 99.9% delivery, deployed on Cloud Run.

  • Node.js
  • React
  • AWS + GCP

02 The story so far

2025 — now

Citi VP · Applications Development

Promoted AVP → VP in under 18 months. CitiDirect first — Angular micro-frontends for treasury & liquidity — now Citi Desktop, the Electron container platform the trading floor runs on.

2024 — 2025

B-Line Technologies Fullstack Developer

Startup pace: features design-to-deploy in Python and React, deploys 50% faster, downtime down 18% — and 150% mobile growth as the sole mobile engineer.

2021

Tata CliQ Software Developer 2

Mobile CI/CD and server-side optimization at India-scale e-commerce — 25% less server load.

2018 — 2021

Revv Software Developer

Dynamic pricing, three payment gateways (+8% success), Lambda services at 99.99% uptime, and a Swift app that made $80k+.

03 under the hood

🧠ai engineering

Claude vision in production · RAG · evals · PyTorch from scratch

🟦typescript

daily driver

🐍python

ingestion + ML

🍎swift

SwiftUI · WidgetKit

🖥️electron

Citi Desktop · Ember

🅰️angular

v19 · MFEs

⚛️react

+ React Native

☁️aws

Certified AI Practitioner

🐘postgres

+ Prisma

🐳docker

K8s · CI/CD

🚀shipping since 2018

7+ years · 3 countries

Next chapter

Let's build something
worth shipping.

Toronto · open to interesting problems in AI, fintech, and everything cross-platform.

Connect on LinkedIn → github.com/yatishGautam