Vasilis Markopoulos

DevOps Engineer

Thessaloniki, Central Macedonia, Greece3 yrs 3 mos experience

Key Highlights

Reduced infrastructure costs by 60% through automation.
Improved deployment time by 70% with CI/CD practices.
Increased site reliability and performance significantly.

Stackforce AI infers this person is a DevOps Engineer specializing in SaaS and Cloud Infrastructure.

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Skills

Core Skills

Cloud InfrastructureInfrastructure As Code (iac)Ci/cd AutomationBackend Development

Other Skills

Amazon CloudWatchJenkinsTerraformGitHub ActionsAnsibleNginxAWSPerformance TestingDockerKubernetesCloudWatchPrometheusAWS LambdaServerless FrameworkAPI Gateway

About

I am a software Cloud developer with background in mathematics and applied informatics. A big code lover, extreme fast learner, team worker and ambitious. I am currently working as a DevOps Consultant and i am part of a Company DevOps team.

Experience

3 yrs 3 mos

Total Experience

1 yr 8 mos

Average Tenure

Current Experience

Catena media

Senior DevOps Engineer

Mar 2022 – Present · 4 yrs 3 mos · Thessaloniki, Central Macedonia, Greece

Led AWS migrations of high-traffic WordPress sites from multiple cloud providers to a scalable, high-availability AWS infrastructure. Designed and implemented Infrastructure as Code (IaC) using Terraform & Terraform Cloud to manage VPC networking, subnets, ALB, EC2 Auto Scaling Groups, EFS, S3, and RDS (Aurora PostgreSQL & MySQL).
Key Responsibilities:
Cloud Migrations: Seamlessly moved WordPress sites to AWS, ensuring minimal downtime and performance optimization.
Infrastructure Automation: Built modular Terraform configurations for full-stack AWS infrastructure, optimizing networking and security.
CI/CD & Configuration Management:
Automated WordPress deployments using GitHub Actions and Ansible (AWX) for managing playbooks.
Developed Site Manager Database, enabling automated migrations and configuration management.
Security & Secrets Management:
Managed credentials and configurations using AWS Secrets Manager.
Followed best practices for Nginx, PHP, and WordPress security hardening.
Monitoring & Performance:
Integrated Sumo Logic, Datadog, and AWS CloudWatch for logging, alerting, and system observability.
Used K6 for performance testing to ensure scalability under high load.
Custom Platform Engineering:
Developed Golden Rules & Internal Developer Platform (IDP) using Humanitec, improving developer efficiency.
Containerization & Microservices:
Deployed and managed ECS with Fargate for running various applications.
AMI Management:
Built and maintained custom Amazon Machine Images (AMIs) with Packer for optimized server provisioning.
Achievements:
Reduced infrastructure costs by 60% through automation and optimized resource allocation.
Improved deployment time by 70% with GitHub Actions and Ansible automation.
Increased site reliability and performance, ensuring high uptime and faster page load speeds.

Amazon CloudWatchJenkinsTerraformGitHub ActionsAnsibleNginx+4

Betadvanced

DevOps Engineer

Sep 2021 – Mar 2022 · 6 mos · Thessaloniki, Central Macedonia, Greece · Hybrid

Worked as a DevOps Engineer, managing cloud infrastructure, automation, and CI/CD pipelines to support a high-traffic Betting & Gaming application. Collaborated with PHP development teams to optimize deployment, improve security, and enhance system reliability.
Key Responsibilities:
Cloud Infrastructure: Managed AWS services (EC2, S3, Lambda, RDS, VPC, IAM) using Terraform for Infrastructure as Code (IaC).
CI/CD Automation: Built and maintained Jenkins and GitHub Actions pipelines for seamless deployments.
Containerization: Deployed applications using Docker and Kubernetes, ensuring scalability and efficiency.
Security & Compliance: Implemented IAM policies, security scanning, and compliance measures for a secure environment.
Monitoring & Performance: Set up CloudWatch, Prometheus, and ELK stack for proactive monitoring and troubleshooting.
Agile & Scrum: Actively participated in sprint planning, retrospectives, and story point estimation, ensuring smooth collaboration.
Achievements:
Reduced deployment time by 60% through CI/CD automation.
Increased uptime to 99.9% by implementing proactive monitoring and failover mechanisms.
Optimized cloud costs by 30% with Terraform automation and resource scaling.
Improved DevOps processes, enhancing efficiency for developers and operations teams.

TerraformJenkinsAWSDockerKubernetesCloudWatch+3

Deloitte

Consultant

Nov 2018 – Sep 2021 · 2 yrs 10 mos · Greece · Hybrid

Developed and maintained backend solutions using Node.js with a focus on serverless architecture. Built and deployed AWS Lambda functions, integrating them with API Gateway to create scalable and efficient APIs. Managed infrastructure provisioning with Terraform, ensuring automation and consistency across AWS resources.
Designed and optimized cloud-based workflows using AWS Step Functions, implementing event-driven architecture with Amazon SQS and Amazon SNS for asynchronous processing. Enhanced security and access management through Identity and Access Management (IAM) policies, ensuring secure API endpoints and resource access.
Implemented CI/CD pipelines to automate deployment and testing processes, leveraging GitOps principles for version-controlled infrastructure and code deployment. Worked extensively with Cloud Infrastructure to maintain high availability, scalability, and performance of applications.
Collaborated with cross-functional teams to improve system reliability, security, and performance, troubleshooting and optimizing backend services. Followed Scrum methodologies for agile development, contributing to the efficient delivery of backend features and improvements.

AWS LambdaServerless FrameworkTerraformAPI GatewayIAMCloud Infrastructure+1