Luis – Node.js, AWS, Typescript

Several personal projects spanning game development and civil society.

• Rebuilt and expanded a game-jam project in Unity/C#, adding new mechanics, levels, and art with a focus on performance optimization.
• Prototyped two independent projects to compare systems architecture approaches, including one exploring networked multiplayer and one 2D exploration game.
• Created two prototypes for future games.
• Designed the system to track civil projects in Cali.
• Continued hands-on study across the React ecosystem alongside development work.

Six client engagements as a part of the development studio:

• A system managing medical studies and analytics;
• A sports booking platform;
• A real estate platform;
• A fintech budgeting platform;
• A cybersecurity platform.

• Delivered React and TypeScript products across six client engagements spanning fintech, healthcare, real estate, sports, and cybersecurity.
• Owned end-to-end delivery for a health records system managing medical studies and analytics.
• Designed and built a complex React and AWS file uploader handling large batch sizes and large individual files.
• Built AI-powered features for a fintech budgeting platform that generated budget calculations and modeled business scenarios.
• Designed prompts translating company accounting data, metrics, and targets into tailored recommendations.
• Worked full-stack across web, mobile, and backend systems using React, React Native, Node, Docker, and legacy .NET/C#.
• Modernized in-house tooling with React and shipped features and fixes to a customer-facing React Native app.
• Delivered backend features across Docker microservices and a legacy .NET system.
• Modernized a legacy React codebase by migrating class-based components to function components and hooks.
• Delivered new features and modernized existing ones for a real estate platform.
• Rebuilt core product features for a sports booking platform, including booking, user profiles, and class listings.
• Contributed to the companion React Native application.
• Led code review and established a structured review process for junior developers.
• Mentored a trainee through trainings, challenges, and feedback.
• Integrated AI tooling into the team workflow.

A global online educational platform for data scientists.

• Took complete ownership of the platform, including feature development, planning, deployment, source control, and stakeholder communication.
• Built the company's in-house course platform in Meteor/Blaze, migrating the full course catalog off WordPress and Udemy onto owned infrastructure.
• Built and launched the conference site from the ground up, supporting 15,000+ attendees.
• Created an API enabling webhook integration with two external providers.
• Led the full migration of the company's course platform from Meteor/Blaze to React.
• Designed and implemented a Stripe subscription payment system serving 10,000+ users monthly.
• Built a one-time checkout for individual course pages.
• Replaced the platform's video provider and built a custom video player to support the transition.
• Mentored a junior developer by defining tasks and guiding their learning process.