Jonathan – Node.js, Typescript, React

A cryptocurrency trading platform focused on options trading, enabling users to access and manage crypto derivatives in a digital exchange environment.

• Built the entire blockchain integration on Ethereum, Base, and Solana, including smart contracts, backend integrations, and React GUI integrations with wallet connection, gas estimation, chain switching, multi-signature transaction signing, deposits, and withdrawals;
• Took the exchange’s smart contracts and systems through external security audits and penetration tests;
• Worked across the exchange’s custody stack with Fireblocks MPC wallets and Copper for institutional clients;
• Wrote backend services that reconciled exchange records and blockchain RPC webhook events against real on-chain data;
• Worked with algorithmic trading firms and market makers on their integrations against the exchange APIs and wrote much of their trading bot code on their behalf;
• Led TypeScript development on the power.trade GUI supporting 100K+ order books and $50M peak daily volume;
• Worked directly with founders and clients on product, design, and software architecture decisions.

A financial trading platform used across the Asia-Pacific private banking division of a global financial institution to execute equity, bond, and fund transactions.

• Led a complete frontend revamp of the equity, bond, and ETO trading screens, including the design work;
• Served as lead frontend developer on the bank’s master blotter, aligning requirements across 20+ teams made up of hundreds of engineers;
• Built and maintained Spring-based Java and Kotlin REST APIs behind the trading screens;
• Worked in a highly collaborative TDD and pair programming environment, coached directly by Kent Beck and Dave Thomas.

A B2B mobility management platform that enables businesses to manage employee rides, allocate transportation credits, and oversee corporate travel expenses.

• Developed and maintained multiple web products for a large-scale digital mobility platform;
• Implemented and enhanced features for B2B solutions supporting corporate ride management and employee transportation credits;
• Improved existing functionality to support business workflows and provide a reliable user experience;
• Collaborated with cross-functional teams to deliver new features, resolve issues, and maintain application stability;
• Contributed to ongoing product improvements, bug fixes, and maintenance across multiple web applications.

A leading global provider of over-the-top (OTT) streaming solutions, delivering technology platforms and services for digital video content distribution over the internet.

• Led the architecture and development of connected TV applications and web-based video-on-demand (VOD) platforms, delivering solutions that reached millions of users;
• Established the web development team in the Singapore office, contributing to team-building initiatives, developer recruitment, and decisions shaping the local engineering culture.

A recruitment technology startup focused on developing digital solutions to streamline hiring workflows, improve candidate management, and help businesses manage their recruitment processes more efficiently.

• Defined the service offering and business model for a web-based recruitment platform;
• Designed and developed a full-featured job portal using the MEAN stack and Google Material Design, delivering the initial solution in under 30 days;
• Led the development and deployment of the platform’s web presence, supporting the company's business objectives and service delivery;
• Participated in the recruitment and selection of software developers for roles based in Singapore.

A digital media technology platform specializing in over-the-top (OTT) solutions, including connected TV applications and web-based video-on-demand (VOD) services, enabling content providers to deliver streaming experiences to millions of users across multiple devices.

• Coordinated development practices between teams in Australia and Hong Kong to ensure consistency and alignment across regions;
• Mentored and supported team members, sharing technical knowledge and promoting collaboration;
• Developed video-on-demand applications for connected TVs and set-top boxes, delivering streaming functionality across devices.