.Net Developer

Project overview

This request is not intended for freelancers!

Assignment Description

The assignment concerns the redevelopment of Internet Consultation within the Kubernetes platform and consists of several parts which are detailed below under A, B, and C.

A: Rebuild website of Internet Consultation

B: Realization of new functionalities;

C: Ensuring the management and further development of the LEGIS applications and the management of application PACTA3;

D: Participation in periodic KOOP knowledge sessions for software development or another relevant knowledge domain.

The .Net developer will make a proactive contribution to testing, drafting, and thinking about KOOP-wide development guidelines. This will be done under the direction of a KOOP Software Architect.

Background Assignment

On behalf of several ministries, KOOP is responsible for the management and further development of a number of applications referred to as 'Legis applications'. These include the following applications:

Chain Information System Legislation in Progress (KIWI)

Internet Consultation

Implementation Relationships

Legislation Calendar

For the Internet Consultation application, a rebuild will take place within the Standard Platform container platform. There is a need for an experienced .net developer who independently delivers concrete results, agreed per sprint, in close collaboration with the other members of the team. Under KOOP's direction, the entire team is ultimately responsible for the (further) development, management, and maintenance of the mentioned LEGIS applications during their various life phases.

In addition, the developer will be deployed within the team responsible for the management and further development of PACTA-3. On behalf of the Ministry of Foreign Affairs, a treaty tracking system has been developed. This system is called PACTA-3 and is the successor to the current PACTA-2. This system allows for:

The emphasis here is on correctly translating functional wishes and requirements into software code. Keywords for software development within KOOP are: robust, maintainable, well-performing, and secure. Furthermore, code within KOOP is developed under architecture. Existing code is adapted/refactored without endangering the operational functioning of the applications.

KOOP wants to implement improvements to elevate both the quality of the software and the quality of the development process to a higher level. KOOP wants to fulfill a number of prerequisites for this using an Agile development methodology. Therefore, good collaboration within a multidisciplinary Scrum team and experience working in an Agile/Scrum environment are desired.

The .net developer will perform all disciplines within the team that are relevant to the SCRUM team: development, testing, documentation, but sometimes also management.

Based on knowledge and experience, and from experiences within the project, an active contribution is expected to the drafting and modification of organization-wide development guidelines.

• tracking data about treaties and their status within the treaty process;
• supporting the treaty process, taking into account (new) legal obligations and guidelines;
• BZ fulfilling its international law obligations as a depository;
• efficiently implementing the four-eyes principle for publishing new or changed data in the BZ Treaty Database;
• generating standard and ad hoc reports as management information and for answering incoming questions;

Requirements

Only submit Dutch-language CVs with a maximum of 5 pages.

Experience in developing and managing complex .NET applications

Candidate possesses at least a completed relevant HBO (higher professional education) degree.

Candidate possesses their own laptop with security, encrypted hard drive (encryption), antivirus software, and a stable internet connection for the work to be performed.

Candidate has knowledge of/experience with the use of various tools such as:

Knowledge of container software such as Kubernetes

Candidate possesses senior-level work experience in developing C#/.Net custom online applications in Microsoft Visual Studio (5 years)

Candidate has work experience in a changing environment where there is no crystallized development process and where own insight is expected (3 years), and where work is performed according to Agile/Scrum DevOps and SAFe frameworks.

Wishes

Experience with the use of various tools such as: Azure Devops, WCF, MVC.Net, Git, Javascript/Jquery, XML, XSLT, Entity Framework, SQL Server (and SQL), HTML, CSS, SOLID, Windows Services, TDD, IIS.

Experience with Dependency Injection;

You have experience with the use of various techniques and tooling that we use within KOOP, such as:

Candidate has affinity with the legislative and regulatory domain, particularly the process of official Publications.

Competencies

Strong communication skills (verbal and written)

Strong analytical skills

Energetic, proactive, and flexible

Perseverance

Solution-oriented thinking

Stress resistant

Structured with an eye for detail

Additional Information

When you, as a supplier, offer a professional to us and they are placed, we will need information from you as a contracting party, including regarding the Chain Liability Act (Wet keten- en inlenersaansprakelijkheid).

The 'WKA' aims to prevent abuse in the remittance of payroll taxes at all links in the chain; from supplier to client.

We cover these risks for our clients by means of a blocked account, the G-account. This is an account to which a portion of the invoice amount is deposited and from which you can pay payroll taxes and VAT to the Tax Authorities.

The percentage to be remitted depends on whether you have an SNA certification (NEN-4400-1 or NEN-4400-2) and whether your company is established in the Netherlands or abroad.

You can apply for the G-account from the Tax Authorities.

If you cannot obtain a G-account (and you can provide proof of this from the Tax Authorities), you also have the option to provide an accountant's statement (assurance report regarding personnel lending) every quarter. In this, a certified accountant (AA or RA) will issue a statement about the correctness, completeness, and timeliness of the remittances.

Please note that the costs for this statement are at your own expense.

• Net Core
• Azure DevOps (TFS)
• WCF
• MVC
• Angular
• Git
• Javascript/Jquery
• XML
• XSLT
• Entity Framework
• SQL Server (and SQL)
• HTML
• CSS
• SOLID
• Windows Services
• OpenShift
• Ingress
• Jenkins
• Gitlab
• Docker
• Kubernetes
• CICD / Helm charts
• RabbitMQ
• Redis
• REST services
• .Net 6 or higher.

Project details

• Start: 2026-11-01T23:00:00
• Location: Den Haag Zuid-Holland, NL
• Languages: Dutch