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Group Cost Controller

Harmattan AI· Operations
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ParisFull-timePosted 4w ago

About the role

Group Cost Controller at Harmattan AI responsible for the Group’s Industrial, R&D and other operational costing, overseeing Industrial P&L, cost performance monitoring, budgeting, forecasting, and KPI definition across multiple entities. Combines hands-on analytics with higher-level structuring, and supports ERP implementation and cost optimization initiatives.

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.

Qualifications

  • 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.

Skills

Required:Excel modellingERP systemsCosting / Industrial controlling
Last updated Oct 7, 2026. Interested? Apply on the company site.
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Building the Future of Autonomous Warfare.

Building the Future of Autonomous Warfare.

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