Andrei Popescu

Senior DevOps Engineer

Experienced DevOps Engineer with a strong focus on Automation, Linux, Kubernetes, Cloud Environments, CI/CD, Infrastructure as Code (IaC), Python, Security and an enthusiast for Open Source technologies.

Experience

ALLSTARSIT

Remote

Senior DevOps Engineer

Jun 2022 - Present

  • Architected and managed cross-platform infrastructure using Terraform, incorporating custom modules for AWS, GitHub and SingleStoreDB.
  • Integrated Terraform code stack with ControlMonkey.io, implementing a GitOps approach to infrastructure provisioning, which reduced manual intervention by 50%.
  • Developed and optimized CI/CD pipelines with Jenkins using Groovy shared libraries.
  • Improved security by detecting and preventing hard-coded secrets in Git repositories using Gitleaks with GitHub Actions and self-hosted runners.
  • Provisioned, configured and operated EKS clusters with auto-scaling capabilities using Karpenter and Keda.
  • Deployed and managed monitoring solutions with Prometheus, created custom alerts and built dashboards with Grafana.
  • Automated tasks using Python, both in AWS Lambda functions and standalone scripts.
  • Applied FinOps best practices optimizing costs, including conducting regular cost assessments, providing cost guidance to teams, setting cost alerts, optimizing application resources and engaging with AWS to reduce cloud costs.

    8x8 Inc

    Bucharest, RO

    Senior DevOps Engineer

    Jun 2021 - Jun 2022

    • Deployed and maintained multi-cloud Kubernetes clusters on both AWS and Oracle Cloud.
    • Developed a self-service Jenkins as a Service (JaaS) solution running in Kubernetes, allowing each team to own a Jenkins master configurable via code.
    • Achieved a 40% reduction in deployment time by implementing GitOps automation using ArgoCD for Kubernetes.
    • Defined and maintained infrastructure as code on AWS and Oracle Cloud using Terraform.
    • Improved CI processes by optimizing container images, resulting in a 30% build time reduction.

      Endava

      Bucharest, RO

      Senior DevOps Engineer

      2020 - Jun 2021

      • Orchestrated the deployment and management of middleware applications using Ansible.
      • Set up and operated Artifactory repository manager, achieving a 25% reduction in storage costs.
      • Created CI/CD pipelines with Jenkins, improving the software development and delivery process through automation.
      • Provisioned and configured AWS infrastructure with Terraform using custom modules.
      • Implemented ELK (Elasticsearch, Logstash and Kibana) to collect, store and analyze log data; employed Logstash to manipulate and transform logs.

        Orange Services

        Bucharest, RO

        Automation Linux Engineer

        2018 - 2020

        • Managed over 2,000 Linux servers, both virtual and bare metal, running RedHat and CentOS.
        • Automated server provisioning, configuration and patch management using tools like Foreman, Puppet, Ansible and Rundeck.
        • Administered essential infrastructure services such as DNS, SMTP, NTP, LDAP and web proxies.
        • Configured, managed, patched and upgraded Veritas VCS clusters for Oracle databases on bare metal servers.
        • Designed and implemented a High Availability Squid proxy solution by configuring redundant Squid servers with automated failover mechanisms improving uptime to 98%.
        • Created and maintained internal documentation for projects, including technical procedures, diagrams and other information.
        • Improved on-call burden by troubleshooting issues, tuning alerts and improving observability dashboards.

          IBM Romania

          Bucharest, RO

          Cloud Linux Engineer

          Feb 2017 - 2018

          • Administered Linux servers for the IBM Cloud environment, specifically RedHat and CentOS.
          • Developed automation scripts for conducting bulk upgrades across Linux servers.
          • Conducted security and compliance audits of Linux servers.
          • Monitored systems using Nagios to identify and resolve system anomalies and failures.
          • Performed penetration tests and resolved identified issues.
          • Resolved complex incidents requiring in-depth technical expertise.

            Huawei Technologies

            Bucharest, RO

            Infrastructure Engineer

            Dec 2014 - Feb 2017

            • Administered both bare-metal and virtualized Linux servers, covering a range of tasks from system configuration and OS updates, to patch management and backup processes.
            • Managed network firewall firmware updates and configuration, ensuring optimal uptime and security.
            • Automated routine tasks using Bash scripts to improve efficiency.
            • Configured storage devices, focusing on LUN provisioning and system upgrades.
            • Deployed, configured and managed LDAP servers.
            • Performed root cause analysis for critical incidents and documented findings to suggest preventive measures.

              Education

              Bachelor of Science in Electrical Engineering

              University of Craiova

              Bachelor of Science in Business Administration

              University of Craiova

              photo of me

              Skills

                • Programming
                • Python
                • Bash
                • Groovy
                • SQL
                  Cloud
                • AWS
                • Oracle Cloud
                  Misc
                • Linux
                • Generative AI
                • Kubernetes
                • Networking
                • Security
                • Monitoring
                • Observability
                • Storage
                • CI/CD
                • GitOps
                • FinOps
                  Tools
                • Git
                • ArgoCD
                • Terraform
                • Docker
                • Jenkins
                • GitHub Actions
                • Ansible
                • Helm
                • SingleStoreDB
                • ControlMonkey
                • Artifactory
                • Prometheus
                • Jira
                • Confluence

              Languages

              • Romanian
                Native
              • English
                C2
              • German
                B1

              Certifications

              • AWS Certified Solutions Architect – Professional
              • AWS Certified Solution Architect - Associate
              • Oracle Cloud Infrastructure Architect Associate
              • Oracle Cloud Infrastructure Cloud Operations Associate
              • Red Hat Certified System Administrator

              Interests

              • Music
              • Biking
              • Traveling
              • DJing
              • Snowboarding
              • Art