Senior full-stack engineer · Toronto

Abdullah Ansari builds software end to end, from blockchain nodes to app stores.

Six years of Node.js and TypeScript services, React web apps and React Native mobile apps, shipped test-first for fintech, crypto and proptech teams.

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Now: Head of Blockchain Acquisition at Vezgo/Wealthica
6 yrs
Full-stack engineering, backend to mobile
12+
Products shipped end to end, web and mobile
40+
Third-party APIs and data sources integrated
3
Countries worked in: Canada, the UAE and Pakistan

Where I've worked

Six years across fintech, proptech and product studios, in Toronto, Abu Dhabi and Karachi.

Mar 2024 – PresentToronto · Remote

Vezgo/Wealthica

Head of Blockchain Acquisition · Senior Software Engineer before that

  • Own the blockchain integration roadmap: connectors for 35+ exchanges, chains and wallets in Node.js and TypeScript, from Coinbase, Kraken, Binance, Bybit, OKX and Gemini to Solana, TRON, Hedera, Hyperliquid, Sui and Toncoin.
  • Maintain the unified EVM connector that serves every EVM chain from one codebase, and re-architected connectors to read straight from blockchain nodes so the data meets tax-reporting standards.
  • Integrate Canadian banks and brokerages into Wealthica's account aggregation, handling login flows, MFA and frequent site changes.
  • Built an AI-integrated reconciliation and data-quality system that checks assets reconcile exactly, and flags the ones that don't, and why.
  • Designed the client-support automation workflow, saving hundreds of manual hours a month.
  • Lead the Vezgo JavaScript SDK: full TypeScript typings, React and Next.js examples, and a build about ten times faster and twenty-five times smaller.
Nov 2023 – Dec 2024Abu Dhabi · Hybrid

Oxinus Holdings

Software Engineer V

  • Led Verinvo, a digital invoicing platform that secures and verifies invoices on a blockchain ledger with encrypted audit trails, from architecture through release.
  • Built core features of Moodstream, a royalty-free music service that runs scheduled, mood-based playlists across venue zones.
  • Architected the billing feature of Posom, a React Native point-of-sale app for iOS and Android.
  • Built the shared design system and component library used across every Oxinus product.
ox.one
Aug 2022 – Oct 2023Abu Dhabi · On-site

DAT Engineering Consultancy

Senior Software Engineer

  • Designed and built Yallah Property end to end: the Next.js site, the React Native apps, NestJS and PostgreSQL APIs, and a secure WebSocket chat.
  • Introduced a Jest and Cypress suite that cut regression testing time in half.
  • SEO work and a smaller initial render took the portal to 1,200+ unique visitors a day after launch.
  • Built DAT Portal, the internal system that connects finance, HR, management and staff.
admin.datconsultancy.com
Mar 2022 – Aug 2022Remote

Upwork

Full Stack Developer, freelance

  • Freelance full-stack projects for several clients, web and mobile, delivered end to end.
  • Largest engagement: the Twin Brain psychological assessment platform for HealthCity, a London mental health social enterprise, in Next.js, Firebase and AWS.
healthcity.org.uk
Dec 2020 – Aug 2022Karachi · On-site

Magical Digits

Software Engineer

  • Led a team of developers and testers converting 700+ classic ASP websites to React and ASP.NET for one of the largest vacation-rental networks in the US.
  • Rebuilt the company site in Next.js, Redux, MUI and Firebase, contributing to a 200%+ traffic increase in one quarter.
  • Built and shipped Opticofy, a management product for optical shops, since licensed by 20+ shops across Pakistan.
opticofy.com101escapes.com, one of the 700+
2017 – 2021 · Karachi
B.E. Computer Systems Engineering, NED University of Engineering & Technology. WES-assessed as equivalent to a Canadian bachelor's degree.

Open source

Two packages, a fix upstream in react-native-web, and one hardware experiment.

Author
2023 – present

rn-story

Instagram-style stories for React Native and Expo. Images, video through expo-video, progress bars and tap gestures. TypeScript-first, zero dependencies.

npmGitHubRead the article
16
GitHub stars
1,489
Downloads, 30 days
v3.0.1
Latest release
Contributor
2026

react-native-web

React Native for the browser, the layer Expo's web target runs on. I fixed an Image bug where a load handler re-created by a parent render aborted and restarted the in-flight request, looping whenever the handler set state, and added regression tests.

Pull requestGitHubnpm
22,137
GitHub stars
23,293,206
Downloads, 30 days
#2851
Merged PR
Contributor
2024 – 2025

vezgo-sdk-js

The official JavaScript SDK for the Vezgo API, MIT-licensed and maintained by Wealthica. I added the TypeScript support and the Next.js example, and shipped type fixes and a dependency security fix along the way.

npmGitHub
36
GitHub stars
7,371
Downloads, 30 days
v2.0.7
Latest release
Author
2020

BandPassFilter

A finite impulse response bandpass filter written in Verilog HDL and simulated in MATLAB, with a write-up on digital filter fundamentals and the design walkthrough.

GitHubRead the article
14
GitHub stars
9
Forks
Verilog
Language

Tools I reach for

The current stack, grouped the way I use it.

Languages
TypeScript, JavaScript, SQL, Python, C#
Backend
Node.js, NestJS, Express, Fastify, WebSockets, RabbitMQ, Redis, REST APIs, Web3 with ethers.js
Scraping
Playwright, headless Chrome, Camoufox, Cheerio, rotating proxies, MFA and login automation
Frontend, mobile
React, Next.js, Redux, React Native, Tailwind CSS, Sass
Data
PostgreSQL, MongoDB, Prisma, Firebase, MS SQL Server
Cloud, DevOps
AWS, Docker, Git, CI/CD, Grafana, SigNoz
Testing
Jest, Vitest, Cypress, Playwright, Chai, Detox

Let's talk

For roles, collaborations, or a copy of my resume.

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