How an interim controller strengthened performance management in a complex industrial environment
18 March 2026When a key controller in a large multinational manufacturing organisation became unexpectedly unavailable, the company urgently needed an interim controller to secure its financial steering. With several large scale plants and logistics hubs across Europe, the organisation depends on reliable controlling to manage volatile input prices and complex production cycles. As monthly closings and a demanding budgeting process approached, TriFinance provided a consultant with the expertise needed to stabilise operations, ensure accurate reporting and reinforce performance management.
A sudden absence in the controlling team created an immediate need for temporary reinforcement. TriFinance deployed an experienced interim controller who ensured continuity, strengthened processes and supported performance management in a complex industrial environment.
Key results
- Stabilization of the controlling function during a critical absence
- Improved data reliability through systematic validation and closer collaboration across functions
- Increased clarity and structure in reporting and forecasting
- Strengthened business partnering at subsidiary and group level
- Improved performance management
Ensuring continuity through hands-on controlling support by an interim controller
The organisation needed someone who could step in without long onboarding time. As an interim controller, TriFinance consultant Mounir Aissat took over all core controlling responsibilities, from monthly closings to financial and operational reporting and recurring variance analysis. His prior experience in audit equipped him with a broad process perspective and the ability to embed himself quickly in complex organisations, which proved valuable in his role as interim controller.
Reflecting on the start of the mission, Mounir explains:
“I knew I had to become operational very quickly. My first priority was to stabilise the process. The team needed someone who could step in, absorb the complexity and deliver reliable outputs from day one.”
From the first month, he delivered consistent rolling forecasts, integrating actuals and updating projections with a clear and structured approach. Variances versus budget and forecast were analysed thoroughly, giving management the insights they needed to steer decisions.
Bringing structure, reliability and business insights
The client’s environment required more than technical skills. It demanded analytical depth, structure and the ability to connect operational drivers with financial results.
Mounir’s approach as a controlling consultant focused on three essential pillars.
1. Strengthening data quality
He reviewed and validated information from production, Sales and Operations Planning (S&OP), sales and accounting before starting any analysis. This significantly increased confidence in the reported figures.
2. Enhancing reporting clarity and timelines
He clarified responsibilities, reorganized timelines and refined the content of key reports so outputs were consistent, insightful and delivered on time.
3. Creating forward looking insights
He analyzed root causes, linked operational assumptions to EBITDA drivers and translated trends into forward looking insights that helped anticipate business impacts.
As Mounir explains: “I wanted to go beyond explaining the numbers. My goal was to help the teams understand what was driving performance and what they could influence. That is where controlling really creates value.”
A strong interim controller creates value by making complexity understandable.
A key role in preparing the annual budget
As the mission progressed, our interim controller became a key contributor to the preparation of the next annual budget. His structured way of working and rapid understanding of the industrial logic helped align inputs from sales, production, S&OP, HR, procurement and finance.
He challenged assumptions, ensured consistency across all budget components and delivered a complete handover for the employee returning to the role, safeguarding continuity and the improvements introduced.
Building trust through collaboration
Becoming a trusted partner in a large industrial organisation requires more than expertise. Through open communication and a pragmatic mindset, controlling consultant Mounir built strong relationships across the European subsidiary and at group level. He also excelled at explaining complex financial concepts to non finance profiles, helping them understand their impact on performance.
Looking back at the collaboration, TriFinance Business Manager Arthur Lombard highlights:
“The client needed someone who could take over the day-to-day tasks and bring clarity to a complex environment. Our interim controller Mounir managed to do both. His analytical mindset, communication skills and motivation made a noticeable difference from the start.”
With each reporting cycle, he strengthened his role as a reliable interlocutor, able to translate complex figures into understandable and actionable insights.
Clear insights in controlling result from connecting operational reality with financial performance.
The TriFinance difference
TriFinance played a key role in ensuring stability in controlling operations and processes during a critical period. Beyond taking over the operational workload, the consultant improved ways of working, strengthened controlling processes and enhanced data quality. His structured approach and ability to quickly embed himself in the organisation reinforced performance management in this demanding industrial environment.
Arthur summarises it well: “We were able to provide a solid solution for the client’s challenge in keeping controlling operations running by bringing in a consultant who fit both the technical expectations and the company’s culture. Mounir brought stability, clarity and a structured way of working that strengthened the client’s controlling activities during a critical period.”
Strengthen your controlling capacity when it matters most
If your organisation is facing temporary gaps or needs extra support in controlling, TriFinance can offer the interim controlling expertise required to maintain stability and keep your financial processes running smoothly.
Curious how we can support your team? Reach out to us to explore our solutions for temporary support in controlling.