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Allyson DavidAD
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Allyson David

@allysondavid1999

Full-Stack Software Engineer building SaaS at Brex, VTEX and CI&T; created hospital software with AI diagnosis support and RAG.

Brazil
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At Brex, I shipped React and TypeScript features for the travel and expense system, giving employees one place to request, book and track company travel and spend. I also automated approval and policy checks with Python workflows.

At VTEX, I built catalog, search, checkout and account experiences, along with custom apps and integrations for commerce services. At CI&T, I built a CRM application and secure e-commerce integrations between storefront and back-office systems.

As a freelancer, I delivered a hospital management platform with AI diagnosis support and AI search over hospital records. I also enabled real-time doctor collaboration through surgical video conferencing and video super-resolution.

I built a resort management application and an EdTech e-library with real-time chat, and enabled multiple organizations to share a SaaS platform with independent access, billing and integrations. My work spans full-stack product development across SaaS, e-commerce, fintech and healthcare.

Experience

Work history, roles, and key accomplishments

FS

Senior Software Engineer

Freelance / Self-Employed

Dec 2024 - Nov 2026 (1 year 11 months)

Delivered a hospital management platform with AI diagnosis support and RAG over hospital records, a resort management platform, and an EdTech e-library with real-time chat. Built multi-tenant SaaS with RBAC, billing, and integrations.

Education

Degrees, certifications, and relevant coursework

Federal University of Maranhão (UFMA) logoFU

Federal University of Maranhão (UFMA)

Master of Science, Computer Science

2016 - 2019

Master of Science in Computer Science from the Federal University of Maranhão, completed from May 2016 to December 2019.

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