Contrôleur Financier (H/F)

Are you a proactive financial professional who loves process optimization, system implementations and continuous improvement? Do you thrive in an international, high-tech scaling environment?

At Eternal Sun, we are professionalizing and scaling our financial landscape. As our new Financial Controller, you will lead the month-end closings and annual audit, serve as the lead Key User for our ERP implementation, mentor our finance team members, and act as the direct right hand to the CFO.

Eternal Sun distinguishes itself through customer-driven innovation, from the outside rather than the other way around, enabling us to deliver customized solutions and follow market innovations faster than others. Solar energy is growing rapidly worldwide and is now even expanding into space! To support our growth and transition away from heavy Excel dependencies, we are currently implementing a new ERP system. You will play a central role in driving this transformation and building a scalable financial foundation.

Your Key Responsibilities

• Month-End Closing & Consolidation: Lead and streamline the monthly and annual closing processes across all 10 international entities (NL, DE, US, CN, IN). Manage intercompany accounting, eliminations, and group consolidation.
• Annual Audit Lead: Oversee the preparation of annual financial statements and act as the main point of contact for external auditors.
• ERP Implementation (Key User): Take ownership as the lead Key User in our ERP implementation. You will help design efficient, future-proof workflows, eliminate manual Excel sheets, and guide the organization through the transition.
• Process Optimization & Continuous Improvement: Proactively analyze financial workflows, simplify routines, and build scalable procedures that match our organizational growth.
• Cash Flow & Working Capital: Monitor liquidity, manage cash flow forecasting, and optimize working capital management across entities.
• Team Guidance & Mentorship: Work closely with our 3 Finance team members on daily operational activities, offering guidance, coaching, and structural support.
• Strategic Partner to the CFO: Serve as the CFO's trusted sparring partner for ad-hoc financial analysis, budgeting, forecasting, and process design.

Who You Are

• Education: Bachelor's or Master's degree in Finance, Accounting, Business Economics, or a related field.
• Experience: 5+ years of relevant experience in financial control, audit, or accounting within an international setting.
• System & Process Mindset: Strong affinity for financial systems and process design. Experience with ERP systems (and ideally active involvement in an ERP implementation) is a major advantage.
• Coaching Skills: Highly collaborative with the ability to mentor and guide colleagues in their daily work.
• Languages: Fluent in English is mandatory. German language skills are a strong plus; Dutch is not required.
• Personal Traits: Proactive, pragmatic, structured, and driven by continuous improvement.

What We Offer

• A high-impact role in a fast-growing, sustainable technology scale-up with global impact
• Direct influence on the company & financial structure as the CFO's right hand
• A key position driving our ERP implementation and process optimization
• An international working environment with colleagues from more than 16 different nationalities
• A competitive salary in line with market conditions
• 8% vacation pay
• Travel allowance of 0.23 cents per kilometer or reimbursement of your public transport costs
• If we make a profit, you will receive an annual bonus
• A good pension plan for your retirement, with two additional modules (disability and survivor benefits)
• 25 vacation days with the option to purchase additional days
• A communal lunch in our canteen at a set table
• After a fixed-term contract, the intention to permanent