John – JavaScript, Smart contracts, Solidity

Telehealth mobile platform that connects patients with licensed medical professionals, offering virtual consultations, real-time communication, and care coordination through a secure iOS and Android app.

• Architecting a cross-platform telehealth app for iOS and Android with real-time VoIP, geolocation, and push notifications;​
• Implementing in-app payments and a multi-pharmacy fulfillment marketplace;​
• Designing a multi-sided platform connecting patients, doctors, and pharmacies.

Web3 trading automation platform that lets crypto traders define rule-based and AI-driven strategies around price, on-chain signals, and risk, then execute them automatically from a connected smart wallet.

• Led product and engineering teams through requirements, technical specs, implementation, and CI/CD standardization for multi-environment deployments; • Designed and built NFT-collateralized lending protocol using ERC-4626 tokenized vaults with borrowing mechanics, collateral management, and liquidation logic; • Implemented account abstraction (EIP-4337, EIP-7702) for session keys and gas sponsorship; • Built a cross-chain swap tool with gas sponsorship via the Relay protocol, then shipped as an MCP server giving AI agents cross-chain transfer capabilities.

A decentralized algorithmic stablecoin protocol that keeps its currency pegged to the US dollar using delta-neutral positions on perpetual futures DEXs, remaining fully backed while minimizing exposure to market volatility; at its peak, the token reached a fully diluted valuation of around $15M.

• Ported algorithmic stablecoin backed by delta-neutral positions from Solana to EVM; • Wrote and deployed smart contracts to Ethereum, Optimism, and Arbitrum, completing multiple audits; • Integrated Curve Finance, Perpetual Protocol, Rage Trade, and LayerZero into the protocol architecture; • Managed multisig treasury wallet, deploying $15M+ stablecoin across yield-earning DeFi protocols.

A Toronto-based mobile product studio delivering native mobile and TV applications for leading North American sports and media brands, helping them launch high-traffic streaming, live scores, and fan engagement experiences across multiple platforms.

• Led cross-functional teams of 10+ across iOS, Android, and backend to deliver enterprise-grade mobile experiences for notable media clients in North America;
• Shipped native iOS and tvOS applications with complex authentication, entitlements, and high-traffic media streaming workflows;
• Authored end-to-end technical architecture specifications that served as the primary implementation blueprint for the engineering team;​
• Established code review practices, introduced coding standards, and mentored engineers across experience levels to raise overall code quality.

This was a high-traffic iOS application for a global dating platform with over 50 million users, focused on delivering a fast, reliable, and engaging mobile experience.

• Lead iOS engineer for a mobile dating platform serving 50M+ users, owning critical features and reliability of the app;​
• Refactored and extended a 50k+ line Swift and legacy Objective-C codebase using modern architectural patterns to improve maintainability and scalability;​
• Collaborated with backend teams to define clear API contracts, improving client–server integration and reducing production issues;​
• Led regular code reviews, introduced coding standards, and mentored iOS engineers to raise overall code quality across the team.