Toufiqur R. Chowdhury

📫 Contact: Please see my ATS-Friendly CV (PDF) for full contact details.
🌍 Location: Antalya, Turkiye (UTC+3)
💻 LinkedIn: linkedin.com/in/toufiq
💻 GitHub: github.com/alien45
💻 Journal: alien45.github.io/journal

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Summary

Senior full-stack engineer with 8+ years of end-to-end ownership. Sole developer of the entire frontend and off-chain backend at Totem Live Accounting for 5 years, including a crowdloan DApp that raised $1M+ in a Polkadot parachain auction. Shipped production systems across telecom, fintech, Web3, and quant trading. Creator of @superutils, a TypeScript utility monorepo built on 5 years of battle-tested internals.

Education

BEng Software Engineering (First Class with Honours)

University of Greenwich, London, UK (2011–2014)

Final Year Project (Indoor Positioning via WiFi Fingerprinting): Designed and built a proof-of-concept Android app for WiFi fingerprinting and real-time indoor location tracking using signal strength, triangulation, and basic ML via SDKs.

• Contributed 25% of the total degree weight.
• Implemented custom indoor mapping, location estimation via Dijkstra’s algorithm.
• Focused on hands-on coding, not just theoretical reporting.

Project report PDF available here

Experience

@superutils - Open Source Developer and Maintainer (Remote)

Jul 2025 – Present

Tech: Typescript, React, RxJS, Vite, Vitest, Vitepress, TypeDoc, Lerna, NX, NPM, CI/CD

• Creator and maintainer of a published TypeScript utility monorepo with multiple packages, complete documentation, and full test coverage
• Built a typed fetch wrapper with automatic retries, timeouts, and cancellable debounced requests, plus ApiClient for isolated per-endpoint instances
• Designed an observable data store built on RxJS for reactive, type-safe state management across both Node and browser environments
• Established consistent API design, strict TypeScript typing, and automated documentation

This monorepo is the direct, public evolution of common-utils - an internal cross-stack library built and battle-tested at Totem Live Accounting over 5 years. Where common-utils solved immediate product needs, @superutils is its intentional rewrite for public consumption: clean APIs, complete documentation, full test coverage, and backwards compatibility as a first-class constraint from day one.

The deferred execution model across @superutils/promise and @superutils/fetch reflects a deliberate design philosophy: async complexity (cancellation, debouncing, timeout, retry) should be composable at the call site, not scattered across components. PromisE.deferred() is the primitive; fetch.get.deferred() is the practical application. Both packages are isomorphic and ship browser builds via CDN.

Links: Open Source | NPM | Docs

Nextion, US - Full Stack Developer (Remote)

Feb 2025 – July 2025

Tech: React, TypeScript, Zod, Vite, Tanstack Table, React Hook Form, Python, FastAPI, Postgres, Redis, Interactive Brokers/IB Gateway, RxJS

• Developed a trade approval, re-/execution, and monitoring UI with batch order queuing, powered by Redis-based quant engine and IB gateway
• Fast-tracked Python with AI to ship FastAPI backend using Docker & Postgres
• Enabled analytics by using backend metrics, execution states, and historical portfolio snapshots
• Wrote an interactive shell script to set up Postgres with reusable, idempotent schema and automated entry of audit logs using Postgres triggers

Totem Accounting, CH - Co-founder & Lead Developer (Remote)

Mar 2019 – Mar 2024

Tech: JavaScript, React, Node.js, CouchDB, Polkadot.js, Blockchain, Socket.io, Semantic UI React, Material UI, TweetNaCl.js, Stripe API, RxJS

Core Contributions:

• Sole developer of the entire frontend & off-chain Node.js backend
• In-app Blockchain wallet, partner & team management and timekeeping & financial statement viewer
• Marketplace with proposal submission & approval with automated payouts
• Streamlined user onboarding flow with signup, faucet, backup & diff-aware selective restore system and in-app notifications & chat
• Engineered a sequential & resumable on/off-chain transaction queue with history UI for debugging and transparency

• Co-designed and implemented BONSAI, an innovative dual on/off-chain proof system using hash anchoring and token-based verification.

  BONSAI: Blockchainization of NoSQL Storage Authorization & Identification. In other words, a decentralized 2 Factor Authentication mechanism with full control over exactly what is being done/stored.

• Launched the Crowdloan & Pledge DApp, raising $1+M in the Polkadot Parachain auction and $83.6K in the pledge round
• Secured & encrypted inter-microservice communication with TweetNaCl.js
• Authored cross-stack library common-utils with Reactive hooks, components, JSON storage & CouchDB helper and form + API data validation library
• Automated CI with GitLab webhooks and custom scripts for source-committed builds and improved release traceability
• Coded and deployed Totem Live Accounting homepage from design specs
• Architected semi-automated tooling for multilingual support for API & frontend

Community Contributions:

• Boosted user retention, social engagement & bug discovery through gamified rewards engine and responsive onboarding
• Launched and ran the Totem Ambassador Program
• Led multilingual Telegram and Twitter engagement, doubling community engagement and improving support across 6+ language groups
• Provided user support by in-app chat, socials and feature walk-throughs

Project hit OutOfFundsException, exited with 0.

Demo Of My Work: Totem.Live DApp | Crowdloan DApp | Polkadot Decoded

Podcasts: Totem Tech Talks | RelayChain | Parity & Friends

Open Source: Totem UI, Message Service, Common Utils and others

• Sole developer of the entire frontend & off-chain Node.js backend for 5 years
• Launched the Crowdloan & Pledge DApp, raising $1M+ in the Polkadot Parachain auction and $83.6K in the pledge round
• Engineered a sequential & resumable on/off-chain transaction queue with history UI for debugging and transparency
• Co-designed and implemented BONSAI, an innovative dual on/off-chain proof system using hash anchoring and token-based verification
• Authored cross-stack library common-utils with reactive hooks, components, CouchDB helpers, and form & API validation - direct predecessor of @superutils
• Streamlined user onboarding flow with signup, faucet, backup & diff-aware selective restore system and in-app notifications & chat
• Marketplace with proposal submission & approval with automated payouts
• Built core DApp modules including in-app blockchain wallet, partner & team management, timekeeping, and financial statement viewer
• Secured inter-microservice communication with TweetNaCl.js and automated CI via GitLab webhooks with source-committed builds
• Drove user retention and bug discovery using gamified rewards engine and responsive onboarding
• Demo: youtube.com/watch?v=29rViB0SFhA | Open Source: github.com/totem-tech

Omniscape, US - Tokenization Developer (Remote)

May 2021 – Jan 2022

Tech: JavaScript, React, NodeJS, Firebase Functions, Firestore, Serverless, NFT, Web3, Stripe API

• Built the tokenization engine for virtual real estate assets
• Integrated Stripe and Web3 payment flows
• Worked on the Virtual Real Estate Map application, a SPA frontend in React, Redux, Firestore and NodeJS backend deployed using Firebase Functions
• Discovered and fixed major security flaws left by ex-dev
• Engineered a NodeJS microservice using queueing and singleton patterns to automate Web3 payments, campaign rewards and tokenization/NFT

Open Source Work & Other Activities

2017 – 2019

• Halo Info Bot: Discord chatbot in Go for the Halo Platform blockchain and masternode/DEX data
• HaloDEX Chart Feed: Real-time TradingView charting data server in Go
• Cloud Connector: Tool for syncing data across AWS S3, GCP, and Azure
• Wrote a PhD research proposal (PDF) on security vulnerability detection in blockchain-based systems (unfunded)
• Ran a small home GPU crypto mining setup during early Ethereum era
• Authored a how-to guide and interactive bash script to setup Halo Platform masternode using VPS

PS: bot name was changed to ‘Crypto Price Checker’ after shutdown of Halo Platform. The bot is currently off-line.

The Summit Group, Melbourne, AU - Full Stack Developer

Apr 2016 – Apr 2017

• Enabled recurring direct debits and card payments via Ezidebit API on WHMCS
• Built and deployed a SPA admin dashboard for billing and invoicing using AngularJS and Docker
• Backend API & microservices using Go, MySQL & RabbitMQ
• Built automation tools in Go for parsing, formatting and storing telecom provider billing data
• Co-interviewed, helped onboard and mentored an intern

Web123 Pty Ltd, Melbourne, AU - Full Stack Developer

Jul 2015 – Mar 2016

• Worked with the tech lead on Foxley CMS, building backend APIs, unit tests (C#/.NET), and UI in AngularJS
• Turned designs into working responsive websites

Easyweb Digital, Melbourne, AU - Systems Developer

Sep – Dec 2014

• Backbone.js component development
• UI/UX components using Bootstrap and Underscore

Certifications

• Red Hat Certified Engineer - RHCE (2009) - 91.2% test score
• Apps for Good (2012) - MVP development, team leadership, and final presentation at Facebook London HQ. Sponsored by Facebook & others.
  • Met entrepreneurs including then Managing Director (Europe) of LinkedIn and others.
  • Attended programming bootcamp by Freeformers

Technical Skills

Languages: TypeScript, JavaScript, Python, Golang, C#, PHP
Frontend: React, Tanstack Table, React Hook Form, Redux, Semantic UI React, Material UI, Tailwind, HTML, CSS, Bootstrap, Stripe API, AngularJS
Backend: Node.js, FastAPI, Express.js, TweetNaCl.js, CouchDB, Redis, Postgres
Blockchain: Polkadot/Substrate, Web3.js, Polkadot.js, NFT, DApps
Tools: Vite, Docker, Firebase, Socket.io, RxJS, Git, GulpJS, RabbitMQ
Other: REST APIs, Webhooks, Microservices, MVP prototyping, Agile
Languages: English (Fluent) | Bangla (Native)

References

Available on request

Recommendations:

“Toufiqur was my Co-founder at Totem and we worked together for 5 years. I highly recommend him as a full stack developer, he goes above and beyond to deliver, and simply gets what the requirements are with very little to go on. You could not find a better team player, contractor and technical expert. He is honest, straight-forward and driven. In the right circumstances I would not hesitate to work with him again and again.”

- Chris D’Costa, Founder @ Totem Live Accounting

“I’ve had the pleasure of working with Toufiqur twice - first as his mentor over a decade ago when he was a student, and more recently as a colleague at Omniscape.

Even back then, Toufiqur stood out for his dedication and strong work ethic. Now, as a seasoned professional, he brings those same qualities along with years of valuable experience. He’s a fantastic team member - equally capable of leading, collaborating within a group, or taking initiative and working independently.

It’s been incredibly rewarding to see Toufiqur grow over the years. I can confidently and wholeheartedly recommend him for any role.”

- Satwant Signh Kenth, Co-Founder @ Omniscape

See employer recommendations on LinkedIn.

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