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Pierre-Yves LejeunePL

Pierre-Yves Lejeune

AWS DevOps Engineer

€560/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Pierre-Yves

Looking for an AWS and Terraform DevOps?
You are in the right place.

I am a DevOps engineer with over 7 years of experience, specializing in AWS and Terraform.

I have worked in various sectors and collaborated with companies such as Docapost, Orange, Pierre & Vacances, BNP, Tekyn...

I can assist you with:
- Designing and implementing infrastructure as code solutions using Terraform
- Setting up automation processes for Linux and Windows
- Developing Python or Bash scripts to optimize AWS operations
- Containerizing legacy solutions for the cloud to scale
- Supporting your teams in adopting DevOps methodologies
- Automating deployment pipelines for fast and reliable software delivery
- Conducting security audits of your existing cloud architectures
- Implementing evolutions and maintenance for your CI/CD chain
- Migrating to cloud environments

I also have knowledge of: PHP, Git, Symfony, Agile methodologies, good development practices...

Do you have a project?
Contact me, I respond very quickly.

__
AWS DevOps, Cloud DevOps, Python DevOps, Amazon Web Services DevOps, DevOps Engineer, SRE DevOps, AWS Kubernetes DevOps, Cloud DevOps Engineer, AWS Architect, AWS Lambda, AWS DevOps, AWS Cloud, AWS Terraform.
DevOps Expert, DevOps Engineer, DevOps Consultant, Senior DevOps, DevOps Integration Engineer, DevOps Integrator, Amazon Elastic Compute Cloud, Azure DevOps, Application Deployment, Infrastructure as Code (IaC), Terraform, Linux System Administration, Docker Products, DevOps, Elasticsearch, Jenkins, Amazon Web Services, Continuous Delivery, Kubernetes, Ansible, and Continuous Integration
  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • TEKYN
    AWS DevOps Engineer
    December 2021 - Today (4 years and 6 months)
    TEKYN is an innovative SaaS company in the textile industry, developing a cloud platform for on-demand customization and production automation.

    The company has about 50 employees, including around 15 developers, a product team of 4, as well as marketing, sales, and management profiles.

    As a Cloud AWS DevOps, I was responsible for optimizing, securing, and maintaining the cloud infrastructure to ensure performance, reliability, and team support.

    My responsibilities and impacts:

    - Reduction of AWS Cloud costs:
    rightsizing, Reserved Instances, Savings Plans, automated S3 lifecycle policies.

    - Infrastructure as Code (IaC) with Terraform:
    modular components for VPC, EC2, ECS Fargate, RDS/Aurora, Route 53, CloudFront, Lambda.

    - CI/CD & Docker:
    design of GitLab CI/CD pipelines, Docker containers, continuous deployment, automation of tests and builds.

    - Cloud security & monitoring:
    IAM, KMS encryption, WAF, CloudTrail/GuardDuty audits, Datadog integration (APM, alerts, dashboards) for observability.

    - SaaS / Cloud Services Migration (Symfony 5 / PHP 8) to ECS Fargate:
    refactoring of the platform for scalability, reliability, and performance.

    - Technical documentation & Processes:
    AWS architecture guides, operational procedures, simplified team onboarding.

    Technologies: AWS (EC2, ECS Fargate, RDS/Aurora, S3, Route 53, CloudFront, Lambda, WAF, KMS), Terraform (IaC), GitLab CI/CD, Docker, Datadog, Symfony 5, PHP 8, Linux, macOS


    ---
    DevOps Expert, DevOps Engineer, DevOps Consultant, Senior DevOps, DevOps Integration Engineer, DevOps Integrator, Amazon Elastic Compute Cloud, Application Deployment, Infrastructure as Code (IaC), Terraform, Linux System Administration, Docker Products, DevOps, Elasticsearch, Jenkins, Amazon Web Services, Continuous Delivery, Kubernetes, Ansible, and Continuous Integration
    devops aws Terraform Cloud AWS Lambda AWS EC2 AWS Fargate
  • Vertical-Mail - Isoskele, Groupe La Poste
    DevOps Engineer
    November 2019 - November 2021 (2 years)
    Vertical-Mail is a subsidiary of the La Poste group, combining data expertise, creativity, and technology to offer innovative and responsible marketing solutions to advertisers.

    My responsibilities and impacts:

    - Setup and management of the Docker development environment (creation of standardized images, support for developers).

    - Design and maintenance of the CI/CD pipeline under Jenkins (writing Jenkinsfile, automation of builds, tests, and deployments in pre-production and production).

    - Deployment automation with Capistrano (configuration of deployment tasks, management of migrations and permissions).

    - Development of Shell scripts for Gitflow reintegration (checkout, merge, automatic conflict resolution) and refactoring of old scripts.

    - POC of Symfony 5 + ReactJS (Webpack configuration, setup of a modern front-end).

    - POC of HashiCorp Vault for centralizing and securing secrets (management of API keys, database access).

    - Integration of APIs and Webhooks (GitHub, Jenkins, Jira) to anticipate PR conflicts, automatically move Jira tickets upon merges, and notify the team in real-time.

    - Debugging and feature evolution on a Symfony 4 application (creation of controllers, services, optimization of Doctrine queries).

    Key results:

    - 40% reduction in deployment time thanks to pipeline automation.
    - 70% decrease in manual conflicts during Gitflow merges.
    - Improved stability of development and production environments.

    Technologies:
    Docker · Jenkins · CI/CD · Jenkinsfile · Capistrano · Gitflow · Shell scripting · Symfony 4/5 · ReactJS · HashiCorp Vault · GitHub API · Webhooks · Jira · DevOps · Linux · Git.


    ---
    DevOps Expert, DevOps Engineer, Senior DevOps, DevOps Integration Engineer, Linux System Administration, Docker Products, DevOps, Jenkins, Continuous Delivery, Continuous Integration
    Docker Gitlab CI/CD Continuous Integration Linux Bash
  • AAMCOS
    DevOps Engineer
    May 2019 - December 2020 (1 year and 7 months)
    The GECS project aims to train healthcare facility employees through a digital platform.

    I started the project alongside the founder before 3 to 4 developers joined the venture.

    I held a hybrid role of DevOps and technical lead, responsible for infrastructure, deployment, application maintenance, and management of functional and technical evolutions.

    My responsibilities:

    - System administration & deployment: Linux server monitoring, maintenance, application deployments, environment management via GitLab CI/CD.

    - Technical project management: cost and time estimation, functional batch planning, execution monitoring.

    - Back & front-end development: adding back-office features for team management, integration of 4 batches of front-end and back-end evolutions.

    - Framework migration: complete porting of the application from Zend Framework to Symfony 2, progressive upgrade to Symfony 4.

    - Documentation & continuous improvement: participation in technical documentation, recommendations on code structuring and software quality.

    Stack & tools: Linux, GitLab, Docker, PHP 7, Symfony 2.8 & 4, JavaScript, Zend Framework.


    ---
    DevOps Expert, DevOps Engineer, DevOps Consultant, Senior DevOps, DevOps Integration Engineer, DevOps Integrator, Amazon Elastic Compute Cloud, Azure DevOps, Application Deployment, Infrastructure as Code (IaC), Terraform, Linux System Administration, Docker Products, DevOps, Elasticsearch, Jenkins, Amazon Web Services, Continuous Delivery, Kubernetes, Ansible, and Continuous Integration
    Linux Gitlab CI/CD Bash Symfony

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Education

  • Terraform Expert
    QA
    2025
    Formation à Terraform Cloud Associate
  • AWS Expert
    Udemy
    2022
    Formation à AWS Cloud Architect - Conception d'architectures sécurisées - Conception d'architectures résilientes - Conception d'architectures hautes performances - Conception d'architectures à coûts optimisés

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