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guilhermelopes's photo
Guilherme Lopes
From Brazil
$25/hr or $40,000/yr

Active over a week ago


Member since Feb 2026

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Senior Full-Stack Engineer

Full-Stack Engineer
Available for hire
Years of experience
10+ years
Experience level
Senior
Available for
Full-time, Part-time, Contract, Freelance

Full-stack developer with over 10 years of experience building web applications and SaaS platforms from scratch. I specialize in Laravel, Vue.js, and Go, and I'm passionate about automating processes and building practical solutions.

Employment History

Founder & CTO at Fretatech Current 2021 - Now
Built Brazil's only fully operational charter bus marketplace from scratch, now processing over $20M USD in cumulative bookings. Architecture & Backend: • Designed and developed the entire SaaS ecosystem from zero: booking engine, CRM, operations dashboard, and commercial modules — all built with Laravel 10+. • Built a robust REST API serving web and mobile clients, using API Resources, form requests, custom middleware, and rate limiting. • Implemented background processing with Laravel Queues and Jobs (Redis driver) for email notifications, PDF generation, and booking workflows. • Designed and optimized MySQL database schemas handling millions of records with proper indexing, eager loading, and query optimization. • Introduced GoLang microservices for high-concurrency tasks (real-time pricing, availability checks), reducing response times significantly. Frontend: • Developed the complete frontend using Vue.js with Composition API, Tailwind CSS, and component-driven architecture. • Built a dynamic multi-step booking flow, real-time search with filters, and admin dashboards with charts and data tables. Infrastructure: • Set up and manage the full Linux (Ubuntu) infrastructure on Linode: Nginx, PHP-FPM, MySQL, MongoDB, Redis, RabbitMQ, SSL, automated backups. • Implemented CI/CD pipelines, Git-based deployment workflows, and monitoring.
Full-stack Developer at Treasy 2020 - 2021
Joined during a critical transition period and worked directly with the founders to improve the core product. • Redesigned the entire product UI/UX based on user research and feedback, significantly improving usability and user retention. • Developed new features for the core financial planning product using Angular 2 and TypeScript. • Built custom WordPress plugins for the marketing team to support lead generation and SEO strategies.

Education

No education history.