Luis – Node.js, AWS, Typescript

Several personal projects spanning game development and civil society software development

• 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:

• Healthcare Company: Worked across full project stack: legacy backend using .net, c# and mysql, newer backend using microservices with nodejs, redis and rabbitmq and postgress, front end with react and mobile with react native, cloud services with Azure cloud.
• A system managing medical studies and analytics: created mvp from ground up as a front end developer. Helped create a pretty intense file upload feature for large files using chunking and presigned urls to S3.
• A sports booking platform: Generation of booking system and cancellation workflows, integration with backend and mobile app.
• A real estate platform: Creating new features on demand, bug fixing and improved testing.
• A fintech budgeting platform: LLM integration, budget generation, multi-step form management, creation of graphql mutations and queries.
• A cybersecurity platform, working on their legacy platform to update their tooling and improved code health.

• 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. Luis migrated from WordPress to their own platform, initially using Meteor and Blaze for the frontend, then switching to React. After migrating from their CRM, they integrated with external tools such as CRM, Cloud Services (AWS), Email Managers (Mailchimp), and Stripe for payments, and deployed using DigitalOcean and MeteorGalaxy.

• 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.