A little fat Garfield sitting on the groundMarcus Filipus

CV

Marcus Filipe Quirino · Porto Alegre, Brazil

Full-stack software engineer specialized in mission-critical payment and billing systems. I build AI systems that help me ship better and faster.

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Experience

  1. Founder · Southlike Software

    2023 – Present

    Boutique AI automation agency for businesses. Agents, workflow automation and systems that connect AI to the real world. Not chatbots answering questions: systems that do the work on their own.

  2. Developer · ADP

    2026 – Present

    Promoted to own more of the billing platform. Same mission-critical systems, wider scope: I drive improvements across the pipelines and services I built, and carry more of the architecture and reliability decisions for the team.

    • Keep raising invoice-data accuracy and closing the remaining revenue-leakage gaps.
    • Build AI tooling and workflows that help the team ship better and faster.
  3. Associate Developer · ADP

    May 2024 – 2026

    Mission-critical payment and billing systems for a global marketplace. Event-driven architectures built to scale.

    • Led a billing data-refinement pipeline end to end over two quarters: requirements, data modeling, architecture and implementation. It fixed a revenue-leakage problem caused by unknown customer status across multiple sources of truth.
    • Result: 60% better invoice-data accuracy and over $1M in annual revenue recovered.
    • Built big-data export pipelines with Databricks feeding the transactional database, cutting query time from 11 s to 100 ms.
    • Refactored the backend with retry and failover, and monitored production through Splunk.
  4. Developer, internship · ADP

    Aug 2022 – May 2024

    Worked with a global team maintaining and modernizing a microservices ecosystem in Node.js.

    • Upgraded dependencies and refactored codebases to current standards.
    • Helped move infrastructure from VMs to Kubernetes, containerizing and testing the components of an entire business domain.

Education

Software Engineering, PUCRS. Studied software engineering in Porto Alegre.

Skills

  • TypeScript
  • Node.js
  • Next.js / React
  • Tailwind
  • AI SDK & agent workflows
  • Docker
  • AWS
  • Databricks
  • Event-driven architecture

Full history on LinkedIn.