Group Cost Controller

Responsibilities

• Build the industrial P&L and the costing framework.
• Create the industrial P&L, define the standard cost calculation methodology, and set up the performance tracking processes that go with it.
• Monitor and challenge production and inventory performance.
• Track production costs, inventory levels and variances, identify deviations early, and work with operations to close them.
• Run the industrial management cycles.
• Initiate and own monthly closings, business reviews, forecasts and budgets for the industrial scope.
• Contribute to the Odoo implementation.
• Work with Production and Supply Chain to ensure inventory is tracked reliably in the system and that the outputs the business needs come out of it.
• Drive cost visibility and optimization beyond the plant.
• Follow R&D and project costs, and lead cost optimization initiatives across other operating costs.

About Us

Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to allied forces.

Our work is guided by clear values: building technologies with real-world impact, pursuing excellence in everything we do, setting ambitious goals, and taking on the hardest technical challenges. We operate in a demanding environment where rigor, ownership, and execution are expected.

About the Role

As

Group Cost Controller at Harmattan AI, you will take ownership of the Group’s Industrial, R&D & other operational costing, working closely with the FP&A Manager to structure, develop, and continuously improve Industrial P&L, Cost performance monitoring, and decision-support capabilities across multiple entities.

The role combines hands-on analytical execution with higher-level structuring responsibilities, including Industrial P&L creation & development, Industrial & R&D cost planning, budgeting, forecasting, and KPI definition.

Educational Background

Finance, Business Administration, Engineering, or a related field (Master’s preferred)

Industrial Controlling Expertise

5–8 years in cost or industrial controlling within a manufacturing environment or a complex production environment

Modelling & Tools

Expert-level Excel and strong financial modelling skills, plus hands-on experience with an ERP . Comfortable with BOMs, standard costs and variance analysis.

Builder's Mindset & Adaptability

Has built a controlling framework from a blank page rather than inherited one. Autonomous, structured, and at ease in a fast-moving environment where the answer does not exist yet.

Business Partnering & Communication

• A true business partner — curious about operations, comfortable on the shop floor, able to challenge production, engineering and procurement constructively. Fluent in French and English.
• We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.