Open to opportunities

David Siqueira

@davidsiqueira

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I build full-stack web and mobile products with Flutter, NestJS, DevOps, and scalable data systems.

Brazil

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What I'm looking for

I'm looking to build modern web and mobile products end to end, improving architecture, performance, automation, deployment, and long-term maintenance.

I've built and maintained full-stack products at Fagundez Tecnologia - HOTMILK, from Flutter and NestJS modules to Moodle integrations, Keycloak SSO, custom PHP plugins, and production infrastructure. I migrated CI/CD from GitLab CI to GitHub Actions, consolidated VPS infrastructure, and orchestrated frontend, backend, Moodle, and Keycloak deployments with Docker and Nginx.

I also build offline-first Flutter applications, REST APIs, role-based access systems, real-time React features, and PostgreSQL/MySQL data models. My work spans the full lifecycle, from architecture and implementation to deployment, monitoring, maintenance, and developer tooling.

Experience

Work history, roles, and key accomplishments

Current

Fullstack Developer

Current

Fagundez Tecnologia - HOTMILK

Jan 2026 - Present (7 months)

Responsible for infrastructure consolidation, CI/CD migration, LMS integration with SSO authentication, and custom plugin development. Migrated CI/CD pipeline from GitLab CI to GitHub Actions and consolidated infrastructure from two VPS instances to one.

CI CD Gitlab CI GitHub Actions Docker Linux Nginx Moodle Keycloak SSO Flutter PHP Cloudflare R2 BASH

Education

Degrees, certifications, and relevant coursework

Pontifícia Universidade Católica do Paraná

Master's Degree, Software Engineering

2024 - 2025

Pursued a Master's degree in Software Engineering, focusing on micro-frontends, accessibility, code smells, anti-patterns, refactoring, and static analysis.

Pontifícia Universidade Católica do Paraná

Bachelor's Degree, Information Systems

2020 - 2023

Earned a Bachelor's degree in Information Systems, covering data structures, data modeling, object-oriented programming, functional programming, software architecture, and software analysis.