Company
Technical Skills
Cloud & Infrastructure
Security & Compliance
DevOps & CI/CD
Programming & Scripting
Monitoring & Observability
Languages
Interests
Gaming, Technology, Nature, Metal, Reading, Festivals
Summary
Senior Site Reliability Engineer with 10+ years of experience building secure, scalable cloud infrastructure for multiple companies, including fintech and cybersecurity firms. Expert in Kubernetes container orchestration, Infrastructure as Code using Terraform and the AWS cloud platform (with experience in other cloud providers).
Proven track record of leading technical teams, significantly reducing infrastructure costs, and successfully migrating complex systems to modern cloud-native architectures. Specialized in security-first approaches with extensive experience in penetration testing and secure development.
Proficient in multiple programming languages, especially Python and Golang. Comfortable working with both internal and open source software projects of any size, with skills demonstrated by recent contributions to open source projects on Github.[1]
Work Experience
At ASML, I work as a Senior Platform Engineer maintaining an AKS Kubernetes platform for internal services, and the Azure cloud infrastructure that is used by the development teams. The main focus is on bringing the platform back up to modern standards and practices.
Key contributions:
- Maintain and improve the AKS Kubernetes platform.
- Migrate platform services to a new managed Kubernetes platform.
- Advocate better lifecycle management of the platform.
- Maintain and improve the CI/CD pipelines.
At Kadaster (Dutch Land Registry and Mapping Agency), I worked for the project DSO-LV (Digitaal Stelsel Omgevingswet - Landelijke Voorziening) as a DevOps and Platform Engineer. For this project, I managed the Kubernetes platform, the Azure cloud infrastructure and I helped the development teams in the use of this platform and automation of daily tasks.
Key contributions:
- Migrate existing CI/CD pipelines from Jenkins to Tekton CI/CD.
- Reduced monthly infrastructure costs by 75%.
- Improve Gitops platform management.
- Improve the security posture of the Kubernetes platform.
- Design and implement OAuth on internal applications using Azure Entra ID, Keycloak.
At S-RM, a British Cybersecurity company, I helped the development teams take full advantage of cloud infrastructure and infrastructure as code, as well as modern DevOps practices.
Key contributions:
- Setup and manage a multi-account AWS environment using Terraform.
- Implement Github Actions automation and deployment from scratch.
- Maintain ECS container environment.
- Design and develop a generic serverless APIs solution on AWS (Golang).
- Operational advice on ISO27001 compliance.
As the technical product owner of the SRE team at Yolt, a fintech scaleup (owned by ING Bank N.V.), I was responsible for setting up the team roadmap and discussing priorities with management. On a daily basis I managed roadblocks and priorities for the team. These activities did not take a full time position, which meant I could still spend most of my time on engineering.
Key contributions:
- Managing infrastructure expectations for development teams.
- Significantly reduced monthly infrastructure costs.
- Maintain and improve the Kubernetes environment.
- Implement financial security requirements.
As a Site Reliability Engineer at Yolt, a fintech scaleup (owned by ING Bank N.V.), I was responsible for the AWS cloud infrastructure at Yolt. Using Terraform and Kubernetes (Kustomize) our team automates the whole infrastructure As Code. This task included setting up appropriate monitoring and developing software to automate toil.
Key contributions:
- Migrating self-managed kubernetes clusters (EC2) to EKS.
- Maintaining the cloud infrastructure and platform for DevOps teams.
- Develop internal automationtools using Go.
- Improving the patch management process.
- Manage RDS PostgreSQL and other databases
As the Product Lead Software Development of the Northwave DevOps Team, I was in charge of determining the roadmap for Software Development as a whole within Northwave. This included both hands-on work as well as designing the processes for software development. With this I helped guarantee the quality and security of Northwaves software.
As a part time role, I also assisted the Northwave CERT with Incident Response.
Key contributions:
- Improving the Software Development Life Cycle (SDLC).
- Setting up a Software Maturity model.
As the team lead of the Northwave Lab, I was responsible for leading the development of new tooling to assist the business with its services.
As a part time role, I also assisted the Northwave CERT with Incident Response.
Key contributions:
- Develop web applications using Python.
- Deploy and maintain linux servers using Ansible.
- Acquiring subsidies (WBSO).
As a security specialist at Northwave, I was responsible for penetration testing, secure development and code reviews. During this period, I worked on various projects both for Northwave directly and on detachment at client organizations including Rabobank (2016-2017) and Dienst Uitvoering Onderwijs (DUO) (2015-2016).
Key contributions:
- Conducted penetration testing and secure code reviews for financial institutions and government organizations.
- Developed and improved internal penetration testing tools and reporting systems.
- Performed security assessments of both in-house developed and third-party software.
- Provided incident response and digital forensics support.