Experience

Liquid 12 / NN (Freelance)

Role: Senior AWS DevOps Specialist / Developer
Period: April 2023 – Present

  • Established an AWS InnerSource model for Terraform and AWS CDK building blocks, including validation and deployment pipelines in Azure Devops and AWS .
  • Created concept contribution guidelines.
  • Conducted AWS Service Reviews and threat modeling.
  • Wrote and reviewed Terraform/CDK building blocks (plus unit tests, examples)
  • Organize Scrum rituals and backlog – supporting PO’s.
  • Testing anti-patterns and unit testing.
  • Created workshops.
  • Investigate AWS DNS data exfiltration risks.

Technologies: AWS (EC2, RDS, ECS, Lambda), Python, Docker, Terraform, CDK (TypeScript), Azure DevOps Pipelines, AWS Code Pipeline,  Checkov, Trivy, Terrascan, Sonar Cube etc.

Conclusion Enablement

Role: Senior AWS Cloud Developer
Period: September 2022 – March 2023

  • Built and refined an AWS Landing Zone in Terraform.
  • Performed AWS best-practice reviews; held alignment cadence calls with AWS.

Technologies: AWS Tagging, EC2, Billing, ECS, Lambda, Python, Docker, WAR, Control Tower, Transit Gateway, Terraform, GitHub Actions.

Conclusion CAI / Enablement

Role: Senior AWS Cloud Developer
Period: December 2020 – March 2023

  • Developed AWS ECS & Fargate solutions, network solutions Akamai, Transit Gateway and Lambda, and performed Well-Architected Reviews.
  • Python Lambda development and refactoring
  • provided mentorship and training.
  • Co-founded an internal AWS Guild, facilitating workshops and study groups.

Technologies: AWS Tagging, EC2, RDS, Billing, ECS, Lambda, Python, Docker, WAR, Control Tower, Transit Gateway, Azure DevOps.

Conclusion CAI (via Rubicon)

Role: AWS Cloud Consultant
Period: March 2020 – November 2020

  • Joined an enablement team serving Royal FloraHolland; took over responsibilities from two AWS specialists.
  • Focused on ECS & Fargate solutions, Akamai integrations, and Well-Architected Reviews.

Technologies: AWS (EC2, RDS, ECS, Lambda), Python, Docker, Terraform.

Rubicon

Role: AWS Cloud Consultant
Period: October 2019 – November 2020

  • Assisted in establishing Rubicon’s AWS practice; created Landing Zone concepts and presented to prospects.
  • Acted as Cloud Engineer within Conclusion CAI’s enablement team.

Technologies: AWS Tagging, EC2, RDS, Billing.

Conclusion Flora (via Conclusion)

Role: AWS Cloud Consultant
Period: March 2019 – September 2019

Cost Optimization Task-Force

  • Investigated AWS tagging strategy and proposed improvements for better cost reporting.
  • Identified right-sizing options to reduce monthly spending.

Application Migration

  • Migrated a traditional on-prem app to AWS using CloudFormation, integrating fully with Azure DevOps CI/CD.

Technologies: AWS (EC2, RDS, CloudFormation), Lambda, SSM, Azure DevOps.

Negometrix (via Conclusion)

Role: AWS Cloud Consultant
Period: October 2018 – December 2018

  • Built a new Landing Zone, production accounts, and VPN connectivity to on-prem DCs and offices.
  • Deployed base security and network configurations.

Technologies: AWS (EC2, RDS, CloudFormation, S3), VPN, Lambda.

NS (via Conclusion)

Role: AWS Cloud Consultant
Period: 2017 – 2018

  • Set up AWS Landing Zone using CloudFormation & Python for a multi-cloud strategy (AWS/Azure).
  • Aligned cloud security solutions with NS’s existing frameworks, achieving AD integration.

Technologies: AWS, Python, CloudFormation.

Older Work Experience (Condensed)

  • Conclusion CFIT (June 2016 – Sept 2019): Founding AWS Squad member; helped build the AWS Landing Zone, attained AWS Advanced Partnership status and Well-Architected Lead credential.
  • Stone-IT (Jan 2011 – July 2014): Open Source Specialist, bridging development and operations, supporting Linux-based high-availability hosting.
  • Virtual Sciences (2007 – 2010): System Administrator / Team Lead, migrated hosting environments to XS4ALL datacenters for clients like Martinair and ANP.
  • Liquid12.nl (2004 – 2021): Owner of a niche web design business, primarily serving clients in the music industry (Steve Vai, Zappa Family Trust, etc.).
  • TietoEnator (formerly TeleDynamics) (2000 – 2006): System Administrator, focusing on office IT, servers, and call center automation solutions.
  • Freelance Hot-Air Balloon Pilot (1997 – 2006): Commercial pilot license (CPL (FB)) + RT License.