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Leonardo O LopesLL
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Leonardo O Lopes

@leonardoolopes

I build high-performance ERPs, CRMs and SaaS platforms with Laravel, TypeScript, React and Node.js.

Brazil
Message

At Grupo GPS, I build high-throughput REST APIs for React and Next.js applications, delivering sub-50ms average response times and reducing MySQL query execution time by up to 60% on tables with more than 10 million rows.

I launched a vehicle and equipment inspection module that replaced a manual process across more than 3,000 assets, integrated vehicle-tracking and WhatsApp Business APIs, and automated data synchronization with Laravel Queues and Jobs.

As Co-Founder and Head of Tech at Division Development, I lead technical decisions and deliver custom software from scoping through production. For Division Flow, I built a multi-tenant contract-management SaaS with Bun, Elysia and Drizzle ORM, plus an AI RAG system using Gemini and Claude with tenant-level data isolation.

I've also built management systems, CRM and ERP products, modernized legacy PHP applications, mentored junior developers, and set up Docker and GitHub Actions deployments that reduced releases to under five minutes.

Experience

Work history, roles, and key accomplishments

GG
Current

Full Stack Developer (Mid-Level)

Grupo GPS

Jun 2025 - Present (1 year 3 months)

Delivered sub-50ms average response times on high-throughput REST API layers and reduced query execution time by up to 60% through MySQL indexing and schema restructuring on tables with 10M+ rows. Launched an inspection module for vehicles and equipment, integrated third-party tracking APIs, and architected a hierarchical user permission system with Laravel Policies and Gates.

Education

Degrees, certifications, and relevant coursework

Universidade Leonardo da Vinci (Uniasselvi) logoUU

Universidade Leonardo da Vinci (Uniasselvi)

Bachelor of Engineering, Software Engineering

2023 -

Bachelor in Software Engineering from Universidade Leonardo da Vinci (Uniasselvi), expected to graduate in December 2026.

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