Senior Advisor Sovereign Collaboration Environment

Project overview

Assignment description

The candidate must assist the Tax Administration in preparing a business case for the future digital sovereign collaboration environment for the Benefits, Customs, and Tax Administration departments.

From a position of seniority and experience, the candidate must perform the following activities:

Ultimately, the candidate's contribution should lead to a business case that helps the senior management of the Benefits, Customs, and Tax Administration departments make the right choices for the future of the digital sovereign collaboration environment.

Background of the assignment

From within the IT organization of the Tax Administration, significant work has been done in recent years on a new workplace with M365. Due to geopolitical developments, it has been decided to stop the rollout of M365, with approximately 12.5% of users already migrated. Currently, options for an on-premise collaboration environment, possibly with open-source components, are being explored. To provide direction, confidence, and predictability to this process, it is important that a solid business case is developed.

• Conduct interviews with subject matter professionals and management;
• Translate interview outcomes into concrete components of the business case;
• Advise on the content and direction of the business case;
• Provide substantive advice on various scenarios;
• Translate market opportunities into the practical reality of the Benefits, Customs, and Tax Administration departments.

Requirements

Only Dutch-language CVs will be submitted, and candidates must speak Dutch perfectly.

Wishes

Competencies

Analyzing

Judgment

Administrative sensitivity

Persuasiveness

Results-oriented

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 purpose of the 'WKA' is 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 through 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 Administration.

The percentage to be deposited depends on whether you have a SNA certification (NEN-4400-1 or NEN-4400-2) or not, and whether your company is established in the Netherlands or abroad.

You can request the G-account from the Tax Administration.

If you cannot obtain a G-account (and you can provide proof of this from the Tax Administration), you also have the option to submit 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.

• Candidate possesses at least 10 years of experience with workplace transformations
• Candidate possesses at least 10 years of experience in preparing business cases within complex government organizations (5000+ employees),
• Candidate possesses at least 15 years of experience with strategic advice to director-level stakeholders in the IT domain.
• Knowledge of open-source initiatives such as NextCloud or similar
• Knowledge of the Microsoft suite

Project details

• Start: 2026-10-21T22:00:00
• Location: Apeldoorn Gelderland, NL
• Languages: Dutch