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Program Manager – Accounting system transformation (freelance)

Brussels, Belgium

A new accounting system only succeeds when the processes, data and people around it move together. For an organisation in Brussels, we’re looking for a Program Manager to guide a transformation spanning financial processes, an analytical accounting model, Salesforce integrations, data migration and reporting.The assignment starts as soon as possible and runs through hypercare following the planned go-live in the first quarter of 2028. The expected commitment averages two to three days per week, depending on the programme’s phase and needs. 

The implementation partner is on board, and preparations are underway. You’ll bring the workstreams together in one realistic roadmap, establish clear governance and keep scope, budget, resources and risks in view. Working closely with business and technology leads, you’ll own the overall programme while they retain responsibility for their domains.

Responsibilities

  • Align all workstreams, dependencies, milestones and resources in one integrated programme plan.
  • Organise governance, prepare Steering Committee and Portfolio Board decisions, and escalate issues on time.
  • Monitor programme scope, budget, risks and quality, including the impact of change requests.
  • Coordinate internal teams and suppliers around data migration, integrations, deliverables and acceptance criteria.
  • Coordinate E2E testing, UAT and go-live readiness, ensuring training, support, hypercare and handover are included in the plan.

Must have

  • Proven experience leading complex ERP, finance or accounting system implementations, including at least three successful go-lives.
  • Experience coordinating programmes that connect Finance, IT, data and business processes across internal teams and external implementation partners.
  • Strong programme management skills covering scope, integrated planning, dependencies, budget, resources, risks and quality.
  • Experience with data migration, integrations, testing, UAT, cut-over and go-live.
  • Sufficient technical understanding to challenge architecture, integration and data decisions, combined with business and finance affinity.

Nice to have

  • Knowledge of accounting and financial processes.
  • Familiarity with Salesforce/ERP integrations.
  • Understanding of analytical accounting models or multidimensional financial structures.
  • A track record in programmes involving multiple external implementation partners.

What's great in the job?


  • Guide a broad transformation spanning accounting, data, integrations, reporting and ways of working.

  • Join during project preparation, with the implementation partner already selected.

  • Lead the programme through go-live and hypercare, with go-live planned for the first quarter of 2028.

  • Bring internal teams and external partners together, while domain ownership stays with the relevant leads.

  • Contribute an average of two to three days per week, depending on the programme’s phase and needs.

What they offer 

Programme ownership

End-to-end responsibility for programme coordination, governance, planning, budget, risks and overall go-live readiness.

Assignment duration

Start as soon as possible and remain involved through hypercare following the planned go-live in the first quarter of 2028.

Time commitment

An average of two to three days per week, depending on the programme’s phase, intensity and needs.

Cross-functional collaboration

Work with Finance, Technology, Data, business stakeholders and external implementation partners.

Have you guided complex implementations through go-live and enjoy bringing teams together around a clear plan? Apply now. We’d be happy to hear about your experience and discuss this Program Manager assignment in Brussels with you.