carlos@cesaints: ~/career.log — zsh

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Command: career

Career

Roles and transitions since 2022: development, architecture, technical leadership and the move into security.

Timeline

  1. (HEAD)

    Founder and engineer

    Own product (study platform) (organization name withheld)

    Study platform with a sales site, a student app and an operations panel in one monorepo. I designed the architecture, set the business invariants and trade-offs, and built and ran the product with automated tests and quality gates before every release.

    • Payments with signed, idempotent webhooks and access revocation in the same transaction.
    • Security review of the system's own business logic, with flaws reproduced and fixed.
    • CI with 8 jobs, enforced CSP and mandatory 2FA on the admin panel.

    TypeScript · Next.js · PostgreSQL · Prisma · Turborepo · Vitest · Playwright

  2. (HEAD)

    Product and technology director (CPTO)

    Business group (two service companies) (organization name withheld)

    I ran technology for two companies in the group, most of the time as the only technical person. I built multilingual corporate sites, an in-house CRM and an internal onboarding platform.

    • Owner of the roadmap, architecture, scalability and security and compliance (LGPD); I built the group's platform end to end.
    • Own site and CRM on edge infrastructure, replacing a SaaS, with cookieless privacy.
    • Multi-company onboarding platform with database isolation proven by tests.
    • A technical hiring method with challenges, a live defense and a human decision, designed but not yet used.

    Astro · Next.js · Cloudflare Workers · Supabase · PostgreSQL · TypeScript

  3. (HEAD)

    Software engineer and DBA (freelance)

    National professional association (organization name withheld)

    The only engineer of a legacy PHP system in production that holds sensitive personal data. I lead its incremental modernization to Vue.js while administering the database: a reproducible environment, versioned migrations, CSRF protection and deploys with backup, verification and rollback.

    • Schema design and complex SQL with stored procedures.
    • Indexing and execution-plan tuning.
    • Backups and safe data migration from legacy to modern.
    • CSRF protection and gated deploys.

    PHP · Vue.js · MySQL · Docker · GitHub Actions

  4. Scrum Master

    Software house (federal government systems) (organization name withheld)

    I led cross-functional squads on government systems and coordinated production database releases.

    Scrum · SQL Server · Power BI

  5. .NET developer

    Software house (federal government systems) (organization name withheld)

    Built mission-critical systems for federal agencies.

    C# · ASP.NET · Angular · SQL Server · Entity Framework · Dapper

  6. Intern, then full-stack developer

    Software house (federal government systems) (organization name withheld)

    Financial and sustainability projects in .NET with React and Angular front ends.

    C# · .NET · React · Angular · SQL Server

  7. Trainee

    Trainee program (organization name withheld)

    First system migration work (PHP and Laravel to Java, Spring Boot and Angular), plus support and networking.

    PHP · Java · Spring Boot · Angular

Education and awards

  1. Postgraduate (lato sensu) in Process and Project Management

    GRAN

    Postgraduate lato sensu.

  2. Postgraduate (lato sensu) in Innovation, AI and Robotic Care

    GRAN

    Postgraduate lato sensu.

  3. 2nd place, representing UDF

    PMI-DF Hackathon

    Second place as a team.

    issuer: UDF · verify (2nd place, representing UDF, PMI-DF Hackathon)

  4. Systems Analysis and Development (associate degree)

    UDF University Center

    Technology degree.

Certifications

  • Scrum Fundamentals Certified · SCRUMstudy
  • Registered Scrum Basics · Scrum Inc.
  • Six Sigma Yellow Belt