Profile

Building Transformative Software, From Startups to large Enterprises & Government Tech.

A full-stack engineer with deep experience across startups, content agencies, corporations, and government. Three times founder, VC-backed entrepreneur, and builder of systems that scale.

Mostly betweenMarbella, New York and Miami
Available forSelect Projects
Gonzalo Franco
About

My engineering journey began in 2014 when I needed to automate business ops for an agency I built with a friend in NYC. This experience revealed the transformative power of infra, coding, automation, and backend systems—sparking a curiosity that continues to drive me today.

The beauty of engineering lies in creating solutions that, while often invisible, can touch the lives of millions. Whether I’m collaborating with other engineers in a fast-moving Scrum environment or driving an entire siloed project on my own, my work spans everything from crafting high-performing Next.js front ends to designing scalable APIs, architecting full platforms, and optimizing infrastructure.

Beyond code, I'm equally passionate about design and user experience, investing significant time into perfecting both the technical architecture and the human interface of every product I build.

“The beauty of engineering lies in creating solutions that, while often invisible, can touch the lives of millions.”

Career

Professional Experience

A decade of building products across startups, agencies, corporations, and government—from founding companies to engineering at scale.

Dec 2024 - Presentfull-time

Front-End Engineer

Massachusetts State Government (via LCM Inc.)

Building and maintaining the official MA State Government portal serving millions of users, implementing government-grade infrastructure as part of an awesome 9-member dev team.

Participating in all Scrum ceremonies (daily standups, sprint planning, refinement, reviews, and retrospectives) to ensure effective team collaboration and project delivery.

Writing robust code and conducting thorough code reviews to ensure highest quality standards.

Integrating various vendor APIs and ensuring seamless data flow across government systems.

Implementing comprehensive testing strategies using Jest, Playwright, and E2E/Regression testing.

Collaborating with design team using Figma to implement pixel-perfect UI components.

Next.js 15NestJSJestPlaywrightStorybookTypeScriptPrismaTailwindDockerAWSFigmaE2E TestingRegression Testing
Jun 2025 - Jul 2025fractional

Front-End Engineer

BusesForSale.com

Migrated the largest buses marketplace in the world ($250K MRR) from legacy PHP to Next.js/NestJS architecture as a fractional engineer.

Dramatically improved performance and developer velocity through modern stack implementation.

Implemented Algolia-powered intelligent search with advanced filtering for optimal vehicle discovery.

Built sophisticated recommendation system to enhance user experience and increase conversion rates.

Integrated OpenAI API for automated vehicle descriptions and intelligent categorization.

Optimized database queries and implemented Redis caching for high-traffic marketplace operations.

Collaborated with design team using Figma to support an ever-changing interface.

Next.jsNestJSTypeScriptReactTailwindAlgoliaPostgreSQLRedisFigmaOpenAI
Aug 2024 - Dec 2024full-time

Full-Stack Engineer

Momntum.ai

Built and deployed AI-powered chatbots automating salon bookings via WhatsApp and Instagram

Developed full-stack features using Rails, Stimulus, Docker, and Mailhog

Integrated ChatGPT and third-party APIs for messaging, scheduling, and client management

Delivered end-to-end automation workflows within an agile, Linear-managed environment

Focused on system reliability, performance, and seamless user experience across platforms

Ruby on RailsStimulusDockerMailhogChatGPT APIWhatsApp APIInstagram APILinear
Feb 2020 - June 2024full-time

Founding Engineer

OpenBroker

Designed and delivered a GraphQL-based API with AI-powered property matching that powers 50+ real-estate websites.

Built intelligent front-end with Next.js, React, Tailwind and custom component library deployed on Heroku, Vercel & DigitalOcean.

Integrated OpenAI for automated property descriptions and market analysis, improving listing quality and engagement.

Implemented machine learning algorithms for personalized property recommendations based on user behavior.

Raised capital at €3.2M valuation led by Sherry Ventures.

Architected GraphQL & RESTful APIs enabling database-less property listing portals for strategic B2B integrations.

Led distributed Agile team through MVP to production, managing high-traffic marketplace with auto-scaling deployments.

Onboarded 300+ clients with zero-downtime deployment strategies and comprehensive API documentation.

Next.jsReactTailwindOpenAIOpenAI VisionGraphQLRuby on RailsStimulus JSPostgreSQLPostGISSidekiqAlgolia AIAWSMachine Learning
Jan 2018 - Jan 2020full-time

Co-Founder, Full-Stack Engineer

CleanHero

Headless proptech solution automating home-rental operations, scheduling cleaners on auto-pilot.

Managed product development for both iOS and web applications, ensuring seamless user experience and functionality.

Recruited, hired, and trained freelance full-stack engineers, fostering a skilled and efficient development team.

Achieved a successful exit demonstrating significant business impact & product scalability.

ReactSwiftXcodeRailsHerokuPostgreSQLSidekiqAirtable
2015 - 2019full-time

CEO, Co-Founder

Supercharge Productions Inc.

Built Supercharge Productions Ltd. and grew it from working in Brooklyn coffee shops to establishing a reputable advertising firm on 5th Avenue, managing million-dollar budgets.

Led the agency in brokering content collaborations between influencers and brands, overseeing product development, marketing, client strategy, and P&L.

Defined product and go-to-market strategies for clients, fostering innovative and complex client products/services to meet B2C and B2B demands.

Identified new business opportunities for clients, driving growth and diversification.

Hired and cultivated a team of 19 full-time employees, spanning roles from marketing managers to engineers.

Managed high-profile clients including Estée Lauder, Asos, Teva, Sephora, Amazon, FourSquare, Daniel Wellington, Furla, JetBlue, and others.

Influencer Management in 2015 was a completely different and much more elevated and profitable landscape than what it is today. Instagram Stories didn't exist. DMs didn't exist. TikTok and Wizz didn't exist. Influencers didn't have millions of followers. Brands didn't have millions of followers. We had to build everything from scratch.

Achieved over $3 million USD in revenue throughout the company's lifespan before exiting in 2019.

Media BuyingPaid MediaOverseas ProductionBrand PartnershipsDealroom managementContent CreationProduction of Turn-key Experiences

View my complete work history and credentials.

Download Résumé
Work

Side Projects

Personal projects and experiments exploring Web3, AI, and innovative product concepts.

Crypto Roulette (2024)
Featured Project

Crypto Roulette (2024)

Developed a decentralized & anonymous roulette application, enabling seamless Ethereum-based betting transactions through MetaMask integration. Built a secure backend using Express.js to manage user accounts, betting logic, and balance tracking.

MongoDBExpress.jsNext.jsWeb3.jsReduxAlchemy
View Project
Sublet NY (2023)

Sublet NY (2023)

Built sublet platform for New Yorkers traveling for a minimum of one month using Next.js, TypeScript, Tailwind, and Ruby on Rails.

Next.js · TypeScript · React · Tailwind
The Lorenz System (Butterfly Effect)

The Lorenz System (Butterfly Effect)

The Butterfly Effect is a concept in chaos theory that describes how small changes in initial conditions can lead to vastly different outcomes in complex systems.

Ruby · Gnuplot
WordPress Plugin

WordPress Plugin

A WordPress plugin that allows major themes (like Elementor) to pull houses from the OpenBroker MLS API and create No-code Real Estate Websites.

PHP · GraphQL · WordPress

Explore more projects and contributions on GitHub.

View GitHub Profile