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Gustavo PossebonSenior Software Engineer
GFT Technologies / SulAmerica Seguros

Enterprise communications at national scale

Supporting a customer communications management platform used by a nationwide insurance operation with more than seven million customers.

Challenge

What needed to be solved

The platform needed dependable batch workflows, provider integrations, and service boundaries that could scale without turning every release into a coordination problem.

  • National-scale communication volume and enterprise reliability expectations.
  • Large CSV ingestion and scheduled processing workloads.
  • Multiple external providers with different integration concerns.
Contributions

What I owned

The emphasis here is on the parts of the work that demonstrate engineering judgment, system thinking, and execution under constraints.

  • Built and maintained services inside a distributed architecture with 20+ microservices.
  • Implemented Spring Batch processing for high-volume scheduled jobs.
  • Integrated provider workflows spanning Valid, Quadient, and Sensedia.
  • Worked directly with GCP infrastructure including Pub/Sub, Cloud Storage, Cloud Scheduler, and GKE.
Outcomes

What changed

The strongest evidence in these projects comes from reliability, speed, throughput, and the amount of operational drag removed from teams.

  • Improved operational confidence in a large-scale communication platform.
  • Created clearer isolation between services and external dependencies.
  • Supported enterprise-grade throughput with cloud-native processing patterns.
Takeaway

What this says about how I work

At this scale, the engineering win is often making complex delivery feel routine: stable jobs, observable integrations, and service boundaries that hold up under pressure.