Billing Administrator

About the role

Sulzer is looking for a Billing Administrator to join its team in Madrid (Rivas). The role turns business activities into revenue through timely invoicing, contract administration and customer documentation management, and supports month-end and year-end closing. It suits a detail-oriented professional in a dynamic, international environment.

Key responsibilities

• Process customer invoices accurately and on time.
• Manage administrative activities related to rental contracts.
• Prepare and maintain customer documentation required for invoicing.
• Handle journal entries and support routine accounting activities.
• Collaborate with Sales Force and internal stakeholders on customer administration.
• Support month-end and year-end invoicing closing and coordinate billing processes.
• Ensure compliance with invoicing procedures and controls, and maintain accurate records.

Required profile

• High school diploma in Administration or a related field.
• At least 2 years of experience in invoicing, billing, accounting administration or administrative support.
• Familiarity with invoicing systems and data entry; strong attention to detail, organisation and time management.
• Ability to work independently and communicate well with others.
• Preferred: medium-level English, experience with contract administration or rental business, and knowledge of accounting support and financial documentation.

Required skills

• Proficiency in Microsoft Office, especially Excel.
• Invoicing systems and data entry.

What we offer

• Permanent contract with competitive salary and a variable pay system linked to personal and financial goals.
• Meal vouchers and a flexible benefits plan (health insurance, transportation, childcare).
• Professional development opportunities within a global company.