Open to opportunities

Dennis User

@densteph

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Senior Full Stack, Blockchain, and AI engineer delivering scalable web3 and AI-driven products.

Canada

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What I'm looking for

I'm looking for a role where I can build full-stack and web3 products with AI integration, collaborate with a forward-thinking team, and ship scalable, secure systems.

I'm a senior Full Stack, Blockchain & AI engineer with eight years of experience building scalable web and decentralized applications using React, Next.js, Node.js, PHP/Laravel, Python, Solidity and modern web3 toolchains.

I've led front-end and full-stack initiatives, integrated real-time systems and payment flows, designed and deployed upgradable smart contracts, bridges, and account-abstraction experiences, and integrated AI tooling such as Gradio and language/ML stacks.

I'm creative, calm, detail-oriented, enjoy mentoring and collaboration, and am actively seeking opportunities to contribute immediately to a forward-thinking team focused on web3, AI, and full-stack product development.

Experience

Work history, roles, and key accomplishments

Current

Full Stack & AI Engineer

Current

Musical AI

Mar 2024 - Present (1 year 7 months)

Developed UI from BeMusic template, integrated a Python Gradio AI audio generation app with a Laravel backend, added multiple user types and authorization, and optimized AWS Amplify components for performance.

React Laravel Python Gradio AWS Amplify Authorization UI Components

FrontEnd-heavy Full Stack Developer

Real Time Feedback

Dec 2022 - Mar 2024 (1 year 3 months)

Built admin interfaces with React/Next.js and Laravel, implemented real-time chat with Web Sockets, Pusher and queues, integrated Twilio and Stripe, and migrated the system (including socket.io) to AWS EC2 using Docker.

Next.js React Laravel Docker Redis Twilio Stripe AWS EC2 Datadog

Senior Next.js & Web3 Developer

EcoToken

Jan 2022 - May 2023 (1 year 4 months)

Led core customer and admin UX using Next.js and the T3 stack, built modular UI kits and APIs, integrated Wagmi for blockchain interactions, deployed NFTs via Hardhat and Pinata IPFS, and implemented account abstraction linking wallets to emails.

Next.js TypeScript tRPC Prisma Wagmi Solidity Hardhat Pinata IPFS MongoDB

Senior Blockchain Engineer

FunToken

Mar 2021 - Apr 2022 (1 year 1 month)

Designed and deployed upgradable OpenZeppelin ERC20 contracts for XFUN, implemented GSN meta-transactions, built token bridges with gas fee logic, and developed bridge UI and relay infrastructure on Google Cloud.

Solidity Smart Contracts Google Cloud ERC20 Hardhat Relay

Smart Contract Developer

Talaqqi

Dec 2020 - Sep 2021 (9 months)

Generated NFT metadata and assets, uploaded content to Pinata IPFS, achieved 100 ETH trading on OpenSea and 400 ETH sales revenue, and conducted smart contract testing and audits using Foundry, Slither, Truffle and Hardhat.

Solidity Pinata IPFS Python Foundry Slither Hardhat Truffle Smart Contract Auditing

Frontend & Web3 Developer

Danapay

Mar 2018 - Jul 2021 (3 years 4 months)

Developed complex admin and customer frontends with React/Redux, built EVM-compatible tokens and DEX-like exchange smart contracts, integrated GSN-based wallet and bridge functionality, and improved testing and CI processes.

React Redux Solidity Web3.js Hardhat Jest CI CD Token Exchange

Full Stack Developer Intern

The Studio Bridge

Jun 2015 - Jan 2018 (2 years 7 months)

Collaborated on responsive frontends using React, Tailwind and TypeScript, developed Node.js/Express backends for booking and real estate projects, integrated payment gateways and real-time Socket.io features, and used ArcGIS/PostGIS for geospatial displays.

React TypeScript Node Express Tailwind Socket.IO ArcGIS PostGIS REST APIs

Education

Degrees, certifications, and relevant coursework

Far Eastern University

Bachelor of Computer Engineering, Computer Engineering

2012 - 2015

Completed a Bachelor of Computer Engineering focusing on core computer engineering principles and practical software development from April 2012 to March 2015.