Gouda, The Netherlands

31 years old

Dutch

Married, Father, Motorcycling, photography, watching netflix and playing guitar

Open, passionate and eager-to-learn fullstack C# / .NET developer who wants to continue growing in his craft. Structured team player who loves to work in a smoothly running scrum team. Someone who delivers software on time and on budget. A valuable addition to any team, someone who thinks along and adapts easily.

• Developing and implementing complex features and architecture
• Quickly finds his way in both a legacy monolith and in state-of-the-art technology. The challenge does not always have to be top-notch state of the art
• Affinity with software security, e.g. accomplished multiple MFA implementations
• Planned and executed major migrations
• Set up build environments and automated the rollout of services and programs

As a developer, I enjoy working in an informal environment. A place where we can have a laugh and then build a product or solution as a team. An environment where feedback is always welcome and appreciated and where we can learn from each other.

I enjoy participating in pragmatic discussions about software architecture as well as the implementation. When the team and I feel confident and convinced, we decide and start building the solution together.

• Environment where complexity is made simple
• Working in Azure / Azure DevOps
• Environment with a security mindset

InsingerGilissen (Amsterdam)

2023-present

.NET software developer

C#, .Net, Dapper, SiteCore, Jetbrains Tooling, Azure, Docker

"InsingerGilissen a Quintet Private Bank is a private bank and depository bank that provides financial services, such as banking and investing. The bank's clients are private individuals, associations, institutions, foundations, small and large companies and independent asset managers."

Within InsingerGilissen Leon works in the back-end team. This team is responsible for maintaining, expanding, and improving the mijn.insingergilissen.nl application. This application is publicly accessible to customers so that they can manage their banking affairs.

Activities:

• Maintenance and development of the mijn.insingergilissen back-end application
• Simplifying the landscape through:
  • Merging data sources
  • Creating microservices for separation of concerns

Technolution (Gouda)

2022-2023

.NET software developer

C#, .Net, Entity Framework, Angular ,JavaScript, Jetbrains Tooling, Azure, Docker

"Technolution works on innovative products, systems and technologies for a broad spectrum of clients, mostly government agencies."

Within Technolution Leon works in the WaterInfo team. This team is responsible for maintaining, expanding, and improving the WaterInfo application. This application is publicly accessible to find all kinds of information about the water in the Netherlands. Think of, water quality, water level, etc.

Activities:

• Designing technical solutions and developing them in C# and Typescript/ Angular
• Writing automated tests within the build pipelines (Unit test in C#, component testing in Docker containers)
• Improve performance by changing business logic and implementing caching.
• Maintaining the WaterInfo web applications as DevOps team

Ministry of Defence, Defence Materiel Organisation (Soesterberg Air Base)

2020-2022

.NET software developer & Identity & Access Management Specialist (IAM)

C#, .Net (Core), Angular, JavaScript, SailPoint IdentityIQ, Java, Beanshell AND TSQL

“The Defence Materiel Organisation (DMO) ensures that military personnel have modern, robust and safe materiel to work with. The DMO is involved in the procurement, maintenance and sale of materiel.”

When the Ministry of Defence IAM team started working with the DevOps concept Leon joined the team. In this team, he had the task of guiding it into a smoothly running agile DevOps team. Every step that teamwork grew had a result. The current software architecture was getting an upgrade and efficiency was doubled.

Activities:

• Data translations between multiple systems.
• Realizing user solutions for:
  • Changing identity information.
  • Request and approve system for user rights.
• Process improvement:
  • Improve audit log.
  • Set up build automation.
  • Setting up deployment solutions.

Valk Solutions (Montfoort)

2019-2020

.NET software developer

C#, .Net (Core), Rider, Azure, Resharper, .NET 4.0 and TSQL

“Valk Solutions is a retail automation specialist. We know the retail processes through and through and develop innovative solutions. We do this with professional knowledge, passion and dedication. Our goal is to make customers very satisfied and to build long-term partnerships. With smart automation and excellent service, we contribute to higher returns and new opportunities for retailers.”

Leon supported the team by doing maintenance and development tasks for the ASPOS product. The ASP Point of Sale (ASPOS) is an omnichannel retail platform that is used by various retailers throughout The Netherlands. Leon worked in the legacy monolith, he updated stored procedures, but also worked on a state-of-the-art API.

Activities:

• Maintenance and development of the ASPOS application
• Small greenfield new construction projects including developing a new API

Traxion (Waardenburg)

2017-2019

.NET software developer & Identity & Access Management

C#, .Net, ASP, PowerShell, JavaScript, WIX toolset, Omada identity suite and Microsoft Identity Manager

“Traxion is an independent information security specialist. With our strategic, tactical and operational consultancy and services we work together with our clients towards robust flexible security and/or Identity Management.”

Leon was responsible at Traxion for developing identity & access management solutions for other customers. In this team, he had the task of coming up with suitable solutions and realizing them in the customer’s landscape. He started at the same moment that the development team was formed. One of his tasks was to help set up a smoothly running development process.

Activities:

• Data translations between multiple systems.
• Developing multi-factor authentication solutions.
• Realizing user solutions for changing identity information.
• Process improvement:
  • Set up build automation.
  • Setting up deployment solutions.
  • Developing (internal) tooling.