Gustavo Honorato
Campinas
Summary
Accomplished Senior Software Engineer with 7+ years in backend and distributed systems. Expertise in Golang and Python, complemented by experience in cloud platforms, payment systems, and workflow orchestration. Proven skills in modernizing legacy systems and designing maintainable architectures for mission-critical services.
Overview
3
3
Languages
7
7
years of professional experience
Work History
Senior Software Engineer
Mercado Livre
01.2026 - Current
- Contributed to the Files initiative, a mission-critical payment platform responsible for consolidating and processing financial files exchanged with card networks as part of Mercado Livre's payment ecosystem.
- Worked on the migration of a legacy payment processing system to a Clean Architecture-based solution, maintaining backward compatibility and ensuring zero disruption to critical financial operations.
- Developed backend services primarily in Golang, building reliable batch-processing pipelines for secure SFTP file transfers, ingestion, validation, processing, and delivery.
- Implemented workflow orchestration with AWS Step Functions to coordinate multi-stage processing, with built-in retries, failure handling, and improved observability.
- Worked on systems where data integrity, traceability, operational resilience, and reliable payment reconciliation were critical requirements.
- Helped reduce coupling between processing stages by establishing clearer boundaries between business logic, infrastructure, and external integrations.
- Participated in on-call rotations, production incidents, war rooms, root-cause analysis, mitigation, and post-mortem reviews.
- Applied engineering practices including Clean Architecture, automated testing, TDD, CI/CD, observability, and distributed-system design.
Software Engineer - Mid Level
Mercado Livre
12.2022 - 01.2026
- Designed and developed a proactive file-arrival prediction platform to identify potential delays in expected payment and reconciliation files before they impacted downstream operations.
- Calculated statistical metrics such as average, median, and P90 arrival times, comparing incoming files against dynamically generated expectations to enhance prediction accuracy.
- Implemented automated monitoring process to evaluate file arrivals continuously, identifying anomalous delays while accounting for normal variability, reducing false positives.
- Shifted detection from a reactive process-identifying problems only after downstream impact-to a proactive approach, providing earlier visibility into potential file-delivery issues.
- Built historical baselines based on previous file-arrival patterns, using a sliding window of recent occurrences to adapt expected behavior as delivery patterns changed over time.
- Analyzed file-delivery behavior using historical data from relational databases and BigQuery, supporting proactive operational monitoring for timely issue resolution.
Software Engineer - Mid Level
Stone / Pagar.me
07.2022 - 12.2022
- Developed backend services using Python, FastAPI, Node.js, and NestJS to support scalable application architecture.
- Implemented automated unit, integration, and end-to-end testing with pytest and TDD practices.
- Built and operated workloads on GCP with Cloud Run, Cloud Functions, Pub/Sub, and Cloud Storage to enhance deployment efficiency.
- Collaborated with PostgreSQL and Firestore through trunk-based development and CI/CD pipelines to streamline database management.
Software Engineer - Mid Level
Enforce
02.2022 - 07.2022
- Developed backend services and integrations with Python, Flask, and FastAPI to support application functionality.
- Utilized AWS EventBridge, Azure DevOps, and Angular 8 to automate integration and unit testing processes.
Software Engineer - Entry Level
Enforce
Campinas
01.2021 - 02.2022
- Developed backend services and RESTful APIs using Python, Flask, and Swagger to support application functionality.
- Managed AWS services including Lambda, CloudFormation, CloudFront, EKS, SQS, SNS, and EventBridge to ensure system scalability and reliability.
IT Intern
Enforce
Campinas
03.2019 - 12.2020
- Developed backend services using Python, Flask, Java, and Spring, with RESTful APIs and AWS services.
- Worked with Kubernetes, Azure DevOps, and Angular 8 across the software development lifecycle.
Education
Tecnólogo -
FATEC
Campinas12-2022
Técnico -
SENAI São Paulo
Campinas12-2018
Skills
- Golang, Python, Java and Node
- FastAPI framework
- Distributed systems design
- AWS services
- GCP services
- MySQL and PostgreSQL databases
- BigQuery analytics platform
- GitHub Actions and Jenkins CI/CD
- System testing methodologies
- Grafana and datadog dashboard creation
- Application performance monitoring (APM)
- REST APIs development
- Secure file transfer protocols
Languages
- Portuguese
- English
Languages
Portuguese
Native
Native
English
Advanced (C1)
C1
Spanish
Upper Intermediate (B2)
B2
Timeline
Senior Software Engineer
Mercado Livre
01.2026 - Current
Software Engineer - Mid Level
Mercado Livre
12.2022 - 01.2026
Software Engineer - Mid Level
Stone / Pagar.me
07.2022 - 12.2022
Software Engineer - Mid Level
Enforce
02.2022 - 07.2022
Software Engineer - Entry Level
Enforce
01.2021 - 02.2022
IT Intern
Enforce
03.2019 - 12.2020
Tecnólogo -
FATEC
Técnico -
SENAI São Paulo