Financial Controller, Spain

About Optibus:

Optibus is a unified software platform revolutionizing public transportation planning, scheduling, and operations in over 7,000 cities worldwide. Using AI, ML, and optimization algorithms, it empowers agencies to design more efficient, equitable, and sustainable transit networks, enhancing passenger access, reducing emissions, and improving driver conditions. With offices globally and a team of 350+ employees, Optibus fosters a collaborative culture centered on innovation, determination, and impact. As the first unicorn in public transportation technology, Optibus is driving the modernization of mass transit to make it the preferred choice for cities and passengers alike.

About the position (role & team):

Optibus is looking for a Financial Controller to join our Finance Team. As a Financial Controller you will manage key financial processes including AR, inventory, tax compliance, and month-end close. You will work closely with internal teams and external partners to ensure accurate reporting, strong financial controls, and compliance with local regulations, while supporting the company’s growth in a dynamic, global environment.

The candidate must be based in the San Sebastian (Spain) area.

Responsibilities:

• Revenue & Accounts Receivable Management - Manage the complete AR cycle from data preparation through collections. Execute monthly revenue recognition and invoicing processes, ensuring accuracy and compliance. Monitor AR aging balances and collaborate with internal teams to optimize collections.
• Inventory & Supply Chain Financial Controls - Maintain communication with supply chain to align inventory movements with financial records. Control inventory invoicing to match physical shipments and manage related NetSuite processes.
• Tax Compliance & Reporting - Partner with external tax advisors on Spanish tax compliance, including monthly VAT preparation and annual tax returns. Stay current on local tax legislation and manage tax-related issues as they arise.
• R&D Grant Management - Lead the identification, application, and management of R&D grant opportunities in collaboration with external consultants. Ensure compliance with grant requirements and optimize funding outcomes.
• Month-End Close & Financial Reporting - Lead the monthly financial close process and review bookkeeper work including bank reconciliations and AP entries. Perform monthly controls and analytical reviews over expenses and revenues.
• Cash Flow & Accounts Payable Management - Oversee AP payment processes with focus on cash flow optimization. Maintain supplier relationships to optimize payment terms.

• Degree in Accounting, Finance, or a related field; experience in accounting or audit firms is a strong advantage.
• Minimum 4 years’ experience in a finance controlling or accounting role.
• Fluency in English and Spanish (written and verbal).
• Experience with NetSuite is strongly preferred.
• Experience managing the inventory process from a finance perspective.
• Experience with Spanish tax regulations and processes.
• Knowledge of SII (Suministro Inmediato de Información) and Guipuzkoa TBAI systems.
• Advanced Microsoft Excel skills.
• Service-oriented with strong team communication and follow-through

Optibus is proud to be an equal opportunity employer. We hire talented individuals, regardless of gender, race, ethnicity, ancestry, age, disability, sexual orientation, gender identity or expression, cultural background, religious beliefs, or any other characteristic protected by federal, state, or local laws. It is our responsibility at Optibus to provide an inclusive and accessible interview experience for all. We will provide reasonable accommodations for all candidates in need of individualised support during the hiring process.