Guilherme Giusti
São Paulo, Sao Paulo
Summary
Knowledgeable Devops Engineer with solid background in maintaining and enhancing system reliability. Demonstrated success in implementing automated solutions to streamline processes and improve system performance. Proven ability to troubleshoot complex issues and optimize infrastructure through proactive monitoring and collaboration.
Overview
10
10
years of professional experience
Work History
Site Reliability Engineer
Seagull Scientific
12.2024 - Current
- Standardised structured logging, metrics, and distributed tracing across 60 + Java microservices by releasing an internal OpenTelemetry library adopted by all 8 product squads, cutting onboarding effort by ~30 %.
- Rolled out Jaeger, Grafana Tempo, and 40 + Prometheus/Grafana dashboards, reducing mean time to root cause (MTTR) from 1.8 h to 55 min in hybrid EKS/GKE clusters.
- Established Service Level Indicators/Service Level Objectives (SLIs/SLOs) and led monthly blameless post-incident reviews, driving a 25 % decrease in P1 incidents within six months as part of a continual-improvement program for reliability and performance.
Lead DevOps / DevOps Architect
Seidor Brasil
08.2022 - 12.2024
- Delivered ~80 % of Orbit project infrastructure with Terraform & GitHub Actions, giving the team repeatable, 100 % IaC deployments
- Automated horizontal scaling with KEDA and hardened the platform with Vault, AWS WAF, GuardDuty and Falco, closing critical security gaps
- Built chat-ops bots and real-time Grafana dashboards that cut troubleshooting time and boosted team productivity
DevOps Software Architect
CWS Platform
06.2020 - 08.2022
- Engineered a high-throughput marketplace on AWS EKS with AmazonMQ, Kinesis and autoscaling to survive Black-Friday-level traffic spikes
- Implemented blue-green CI/CD pipelines that enabled zero-downtime releases and rapid rollbacks
- Deployed Istio service-mesh with mTLS and tuned CDN/SEO settings, boosting page-load speed 30 % and cutting infra-related incidents ~40 %
Solutions Architect
Baymetrics Tecnologia (Assaí Atacadista)
10.2018 - 04.2020
- Migrated legacy stack from Docker Swarm to Kubernetes (kops), increasing system reliability by40 %
- Created Jenkins + Terraform CI/CD that trimmed average deployment time by45 % and pushed monitoring coverage to 95 %
- Mentored multiple squads on modern DevOps and software design, raising overall engineering maturity
Team Leader / Senior Java Developer
Tegra (GPA Group)
06.2015 - 08.2018
- Modernised ERP with Spring Boot + Kotlin backend and Angular front-end, slashing average response times 50 %
- Introduced Jenkins CI/CD and Docker Swarm, cutting production errors 40 % and achieving 99.9 % uptime
- Rolled out Keycloak SSO and micro-frontend architecture, strengthening security and enabling modular delivery
Education
Post-graduate Program - Software Architecture & DevOps
FullCycle Academy
Brazil06.2025
B.Sc. - Computer Science
Faculdade Sumaré
Brazil01.2013
Skills
- Languages & Frameworks: Java (Spring Boot, Quarkus), Kotlin, Golang, Python
- Observability: Prometheus, Grafana, Jaeger, OpenTelemetry
- Containers & Cloud: Kubernetes, Docker, Cloud infrastructure management, Network troubleshooting
- Automation & CI/CD: Terraform, GitHub Actions, Infrastructure automation, Linux system administration
- Security & Auth: Keycloak, Vault, OAuth2/JWT, AWS Secrets Manager
- Architecture Practices: Microservices, Event-driven design, Clean/Hexagonal, FinOps
Languages
English
Upper intermediate (B2)
Timeline
Site Reliability Engineer
Seagull Scientific
12.2024 - Current
Lead DevOps / DevOps Architect
Seidor Brasil
08.2022 - 12.2024
DevOps Software Architect
CWS Platform
06.2020 - 08.2022
Solutions Architect
Baymetrics Tecnologia (Assaí Atacadista)
10.2018 - 04.2020
Team Leader / Senior Java Developer
Tegra (GPA Group)
06.2015 - 08.2018
Post-graduate Program - Software Architecture & DevOps
FullCycle Academy
B.Sc. - Computer Science
Faculdade Sumaré
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