Sidiney is available for hire
Hire SidineySidiney Marciano Crescencio Junior
Verified Expert in Engineering
DevOps Engineer and Developer
Santa Maria da Feira, Portugal
Toptal member since December 4, 2024
Bio
Sidiney is a results-driven IT professional specializing in Cloud Native solutions. An expert in Kubernetes and Linux system administration, he is known for his proactive problem-solving approach and ability to streamline operations for maximal efficiency. Sidiney is proficient in AWS, Google Cloud Platform (GCP), Terraform, and infrastructure as code (IaC) for driving significant technical and operational enhancements.
Portfolio
Toptal
Argo CD, Kubernetes, Google Cloud Platform (GCP), Containers, Helm, Linux...
Objective Platform
Argo CD, Google Cloud Platform (GCP), Kubernetes, Linux, Ansible
NetApp
Linux, NetApp
Experience
- Linux - 10 years
- Kubernetes - 5 years
- Google Cloud Platform (GCP) - 5 years
- Containers - 5 years
- Kubernetes Security - 5 years
- Terraform - 5 years
- Helm - 3 years
- Argo CD - 3 years
Availability
Part-time
Preferred Environment
Linux, Kubernetes, Google Cloud Platform (GCP), Containers, Kubernetes Security, Terraform, Traefik, Argo CD, Prometheus
The most amazing...
...project I've worked on involved optimizing Kubernetes clusters, implementing cost-saving strategies, and enforcing security best practices using Kyverno.
Work Experience
Senior Infrastructure Engineer
2022 - 2024
Toptal
- Managed GKE clusters, ensuring 99.9% uptime, streamlining upgrades, and optimizing GCP infrastructure costs by 20% through resource scaling and optimization.
- Headed the migration of over 50 workloads from GCE instances to GKE clusters, achieving a seamless transition with less than 1% downtime.
- Implemented PodDisruptionBudget across multiple workloads to enhance workload availability during maintenance.
- Enforced Kubernetes best practices using Kyverno, creating and applying policies to ensure compliance, security, and efficient resource management across clusters.
- Enhanced and maintained Terraform modules, ensuring efficient infrastructure automation and scalability.
- Integrated Prometheus and Thanos for monitoring and improving observability across all Kubernetes clusters.
Technologies: Argo CD, Kubernetes, Google Cloud Platform (GCP), Containers, Helm, Linux, Traefik, Kyverno, Thanos, Prometheus
DevOps Engineer
2020 - 2022
Objective Platform
- Implemented IaC using Terraform, optimizing resource allocation and reducing cloud costs by 30% through automated scaling.
- Administered and optimized AWS and GCP environments, improving operational efficiency by 25% through automated monitoring and resource tuning.
- Introduced Kubernetes into the company and migrated over 15 workloads, reducing prototype development times by 40%.
- Developed and maintained CI/CD pipelines with integrated security checks, reducing deployment vulnerabilities.
Technologies: Argo CD, Google Cloud Platform (GCP), Kubernetes, Linux, Ansible
Technical Support Engineer
2019 - 2020
NetApp
- Delivered technical support for NetApp's OnCommand suite, resolving 95% of critical customer issues within SLAs and improving client satisfaction.
- Replicated customer environments using ESXi, reducing issue resolution time by 20% through precise troubleshooting complex problems.
- Authored and maintained knowledgebase articles, enhancing team efficiency and facilitating customer self-service.
- Guided L1 support teams, reducing escalation response times by 30% and increasing customer satisfaction by 15%.
Technologies: Linux, NetApp
Technical Support Engineer
2018 - 2019
ClusterVision
- Supported high-performance computing (HPC) clusters, maintaining 99.8% system availability while resolving complex technical challenges.
- Conducted Linux system administration, reducing troubleshooting time through automation and process improvements.
- Automated routine tasks with Bash scripts, improving team productivity and ensuring seamless report generation and backups.
- Administered MySQL databases and implemented Pacemaker/Corosync, improving data redundancy and minimizing service interruptions.
Technologies: Linux, Slurm Workload Manager, High-performance Computing (HPC), MySQL, Bash Script
Linux System Administrator
2013 - 2017
Redix
- Managed Linux servers and provided L3 support for critical environments, ensuring 99.9% uptime for hospital and enterprise systems.
- Developed and implemented Bash scripts, automating tasks and increasing operational efficiency by 30%.
- Headed AWS cost-reduction initiatives, optimizing resource allocation and reducing cloud expenses by 30%.
- Administered Docker containers and introduced containerization.
Technologies: Linux, Bash Script, Docker, Amazon Web Services (AWS)
Experience
Migration from GCE instances to Kubernetes
Spearheaded and performed the migration of over 50 workloads from GCE instances to GKE clusters, collaborating closely with development teams to ensure a smooth transition with less than 1% downtime. These migrations, carried out over time, leveraged Kubernetes' advanced features to optimize efficiency, scalability, and cost-effectiveness. Autoscaling was key to handling traffic spikes while minimizing resource waste.
Security was a top priority, and I implemented best practices such as network policies, pod security standards, and RBAC to safeguard workloads. For cost optimization, I focused on right-sizing workloads and utilizing Kubernetes' horizontal and vertical pod autoscalers to align resources with demand.
I introduced canary deployments to roll out changes incrementally, starting with small traffic percentages and increasing only after validation, reducing risk and enhancing release confidence. This project modernized the infrastructure and established a secure, scalable, and cost-efficient foundation for future growth through collaboration and careful planning.
Security was a top priority, and I implemented best practices such as network policies, pod security standards, and RBAC to safeguard workloads. For cost optimization, I focused on right-sizing workloads and utilizing Kubernetes' horizontal and vertical pod autoscalers to align resources with demand.
I introduced canary deployments to roll out changes incrementally, starting with small traffic percentages and increasing only after validation, reducing risk and enhancing release confidence. This project modernized the infrastructure and established a secure, scalable, and cost-efficient foundation for future growth through collaboration and careful planning.
Certifications
NOVEMBER 2022 - NOVEMBER 2024
Certified Kubernetes Security Specialist (CKS)
The Linux Foundation
MARCH 2021 - NOVEMBER 2023
HashiCorp Certified: Terraform Associate
HashiCorp
APRIL 2020 - APRIL 2023
Certified Kubernetes Administrator
The Linux Foundation
SEPTEMBER 2019 - DECEMBER 2022
AWS Solutions Architect Associate
Amazon Web Services
Skills
Libraries/APIs
Thanos
Tools
Terraform, Traefik, Helm, Ansible
Platforms
Linux, Kubernetes, Google Cloud Platform (GCP), Amazon EC2, Docker, Amazon Web Services (AWS)
Languages
Python, Bash Script
Paradigms
High-performance Computing (HPC)
Storage
NetApp, MySQL
Other
Containers, Kubernetes Security, Cloud Cost Management, Argo CD, Prometheus, Kyverno, GitHub Actions, Slurm Workload Manager
Collaboration That Works
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