Resume

Santiago Molina

Engineering Leader & Full-Stack Architect

Engineering leader and full-stack architect with 12+ years building resilient products, modernizing frontend systems, and helping teams deliver with confidence.

[email protected]

linkedin.com/in/santi020k

github.com/santi020k

Medellín, Colombia · Remote worldwide

2-page resume Full CV

Two-page resume for applications · Full CV with complete work history

Experience

Smith Commerce — Senior Front End Developer

May 2025 – Present

Rebuilt Marcone's storefront into a faster, more accessible headless experience while giving teams room to ship independently.

Key Impact

Lighthouse score improved from 35 to 98
Time to Interactive dropped by 75%
100% accessibility score on the rebuilt storefront

Next.jsReact.jsTypeScriptTurborepoTailwind CSSRadix UILucide ReactStorybook

X Games — Senior Full Stack Engineer

Jan 2025 – Jul 2025

Built and scaled the official X Games digital platform — a high-traffic sports media site serving millions of fans — with real-time live streaming, geo-based access control, and a programmatic ad infrastructure powered by Google Ad Manager.

Key Impact

56+ pull requests merged across two codebases
Real-time geo-based live stream access across global audiences
Full Google Ad Manager programmatic infrastructure shipped from scratch

Next.jsReact.jsJavaScriptSCSSSanity CMSSanity StudioPortable TextFirebase

Void.GG — Technical Lead

Feb 2023 – May 2025

Led architecture and delivery for a fast-moving esports platform across web, mobile, and backend systems, improving performance, release speed, and team velocity.

Key Impact

35% better system performance
60% faster deployments
95%+ sprint velocity

React.jsNext.jsTypeScriptReact NativeNestJSNode.jsExpress.jsSoftware Architecture

Optic Power — Senior Full Stack Engineer

Jul 2021 – Feb 2023

Shipped across gaming, SaaS, and martech products in parallel, improving API performance by 40% while supporting launches for Team Liquid, NurtureBoss, and Stardust.gg.

Key Impact

40% better API performance
Multiple client launches in parallel
Shipped product work for Team Liquid, NurtureBoss, and Stardust.gg

React.jsNext.jsTypeScriptNode.jsReduxRedux ToolkitRedux SagasMongoDB

Earlier Experience

PADS — Technical Lead

Jan 2020 – Jul 2021

Led the web, back-office, and mobile experience for a luxury real estate platform, growing monthly active users by 50% and improving broker workflows.

Datagran — Front-End Lead

Dec 2018 – Jan 2020

Led the front-end modernization of an AI martech platform, cutting bugs by 30% while moving the product from jQuery to a scalable React and TypeScript architecture.

Justbit.site — CTO & Co-Founder

Apr 2017 – Dec 2018

Co-founded a boutique software studio that shipped 10+ client launches in its first year and helped selected clients grow organic traffic by up to 70%.

Nebular Technologies — Full Stack Developer

Jan 2014 – Apr 2017

Shipped client web, Android, and commerce products across Rails, AngularJS, Java, and WordPress, building the release discipline and full-stack range I still rely on today as a senior engineer.

Community

ReactJS Colombia — Co-Organizer

Jan 2017 – Present

Co-organize one of Medellin's most active React communities, sustaining free meetups and workshops that drew 100+ participants at peak sessions.

Key Impact

Dozens of events since 2017
100+ participants at peak sessions
Community talks, workshops, and mentorship across experience levels

React.jsJavaScriptTypeScriptReact NativeCommunity BuildingPublic SpeakingWorkshopsMentorship

Skills & Expertise

Languages

Spanish (native), English (C1).

Front-End

React.js, Next.js, React Native, Astro, TypeScript, Tailwind CSS, Redux, TanStack Query, Radix UI.

Back-End

Node.js, Express.js, NestJS, REST, GraphQL, PostgreSQL, MongoDB, PHP, Ruby on Rails.

DevOps & Architecture

AWS, Docker, CI/CD, GitHub Actions, System Design, Microservices, Turborepo.