- Experience -

Site Reliability Engineer @ Topicus.Healthcare
November 2018 - Present

I'm currently working on an internal infrastructure platform that produces repeatable infrastructure deployments using infrastructure as code. Our main mission is to enable our development teams to assume operational responsibility of their own products without having to have extensive experience in infrastructure engineering. To achieve this, we've built a platform of infrastructure-as-code modules that teams can customize and deploy in their environment using an automated pipeline. Each of these modules are self-contained logical resources (Kubernetes clusters, databases, message queues, etc.) and include all of the configuration necessary to be secure, redundant and scalable by design. Besides my primary role, I'm also working to get an internal red-teaming effort off the ground within our organisation.

Technologies:

I've been able to dive deeply into the AWS ecosystem working with almost all "primary" AWS services: EC2, VPC, CloudFormation, EKS, Lambda, S3, RDS, IAM, CloudTrail, CloudWatch and many more. Our platform is written primarily in Python, uses Git for version control and is deployed using Jenkins. Infrastructure-as-code is written either in CloudFormation or Terraform. Applications are run as containers on Kubernetes, and we're also working with Cloudflare to protect our infrastructure.

A talk by my team lead about this platform.

© Topicus

- Education -

Computer Security (MSc) @ University of Twente
September 2015 - September 2018

The 4TU Cyber Security programme teaches a wide range of (computer) security topics. It includes technical topics including encryption, algorithms and application-, systems- and network security as well as "social" topics such as ethics, incident response and social engineering.

I've had the opportunity to do a graduation internship at Nedap Security Management. During this internship I worked on a visualisation tool that aids translation of authorisations from proprietary access control models to the Role-Based Access Control standard using algorithms.

For me, this programme was prefaced with a pre-master Computer Science. My average grade for this programme was an 8.0.

More information about the 4TU Cyber Security programme. Get my master's thesis.

© W. Maaskant

Creative Technology (BSc) @ University of Twente
September 2011 - September 2015

Creative Technology is a relatively young multi-disciplinary technology bachelor. The curriculum teaches students in a number of disciplines including computer science, electrical engineering, industrial design, mathematics. Besides purely technical skills, students are also taught to apply this multi-domain knowledge to project planning and inter-disciplinary communication. This combination of technical and professional skills trains students to be technically adept, communicative and self-reliant.

During my bachelors I took a full year off to take part in the full-time board of my study association.

My average grade for this programme was a 7.8.

More information about the Creative Technology programme.

- Testimonials & Certifications -

AWS Certified Solutions Architect – Associate

2019 Digital Certificate

Jonathan is a communicative, enthusiastic engineer who would make a great addition to an engineering team. During his master thesis project at Nedap Security Management he has shown to be a disciplined worker with a strong focus on making things work. His hands-on engineering mentality combined with his strong communication and presentation skills make Jonathan a valuable team member.

Jonathan completed his assignments on time and never failed to add a creative touch when appropriate. I would highly recommend him for an engineering position and would not hesitate to put him in a customer facing role.

2018 Albert Dercksen - R&D Manager @ Nedap Security Manager

Jonathan heeft bij NDIX laten zien en ons laten ervaren dat er meer mogelijk is dan op het eerste gezicht wordt gedacht, door met nieuwe inzichten en ideeën te komen die in de praktijk goed bruikbaar zijn. Daarbij heeft hij laten zien dat hij in staat is de kennis en creativiteit van diverse personen en partijen te combineren.

2015 Jeroen van de Lagemaat - Director @ Nederland-Duitsland Internet Exchange

Jonathan helped me as a student assistant in a course on "data driven applications". I experienced Jonathan as very reliable, showing great self-initiative. He was well able to explain the basic principles of data base theory and web services. Overall, I was very satisfied with his work.

2014 Robin Aly - Assistant Prof. @ University of Twente

Jonathan has a huge drive to help people as fast and as good as he can, and he has professionalized the IT of [study association Proto] to a large degree. I'd recommend him straight away when some IT related job becomes available!

2014 Emile Nijssen - Co-founder and Creative Director @ Athom B.V.