Billing Operations Specialist

EQS Group AG; Barcelona; On-site; EUR 32,000 - 42,000; Full time

Benefits offered by this job

Hybrid working model

Work from abroad within the EU

24 days paid vacation

Meal vouchers

Private health insurance

Mental health counselling

Job summary

EQS Group AG in Barcelona seeks a Billing Operations Specialist to join our Billing team. You will own the assigned customer portfolio and manage end-to-end billing activities, from invoice creation to AR monitoring and payment follow-up.

We value accuracy, ownership, and proactive problem-solving as you drive cash collection and improve processes. Ideal candidates have billing/AR experience, strong Excel skills, and comfort with vendor/customer portals in a hybrid Barcelona setting.

Qualifications

• Experience in billing, Accounts Receivable, collections, finance operations or a comparable role.
• Strong ownership mindset and the ability to follow tasks through to completion.
• High accuracy and attention to detail, especially with financial data and reporting.
• Ability to organize workload, manage priorities and meet deadlines independently.
• Confident and professional communication with customers and internal stakeholders.
• Solution-oriented mindset and willingness to investigate issues before escalating them.
• Good Excel skills and confidence with finance systems.
• Ideally experience with ERP systems and customer/vendor portals.

Responsibilities

• Manage an assigned customer portfolio across billing and collections activities.
• Prepare and issue accurate invoices based on approved billing data.
• Verify customer information, purchase orders and supporting documentation for first-time-right billing.
• Submit invoices through customer/vendor portals and monitor their status.
• Monitor Accounts Receivable aging and identify overdue invoices requiring action.
• Proactively follow up with customers on outstanding payments and expected payment dates.
• Collaborate with Accounting, Customer Success and other internal stakeholders to resolve issues.
• Identify opportunities to reduce rework and improve processes.

Skills

Billing

Accounts Receivable

Collections

Finance operations

Attention to detail

Ownership mindset

Excel skills

Tools

ERP systems

Vendor portals

Customer portals

Job description

JOIN OUR TEAM

We are looking for a Billing Operations Specialist to join our Billing team.

In this role, you will ensure accurate and timely billing activities while taking ownership of an assigned customer portfolio. You will work across the full operational billing cycle – from invoice creation and vendor portal submission to Accounts Receivable monitoring and payment follow-up.

We are looking for someone who combines attention to detail with a strong sense of ownership: someone who not only completes tasks but follows them through, understands their impact on cash collection, and proactively resolves issues.

This is an opportunity to develop your expertise in finance operations, take on increasing responsibility, and contribute to a more efficient, digital and future-oriented Billing function.

OUR CULTURE DRIVES OUR BENEFITS

• You're important. We foster a trusting environment and lifelong learning to support your individual development. Set personal development goals, receive support and regular feedback – wegive you the tools to succeed.
• Living our values. Our values connect us. They shape how we work and collaborate across teams and cultures, creating belonging, trust, and an environment where everyone can thrive.
• Great atmosphere. We cultivate a dynamic culture where shared goals bring us together. From unforgettable company events to volunteering initiatives, we inspire and empower each other to make a positive impact.
• Work-life balance is a must.Work in a modern office, in the heart of Barcelona. In addition, we offer flexibility through our hybrid-working model, conveniently arrange your working hours, and the ability to work from abroad within the EU. We provide you with 24 days of paid vacation – because we also value your free time.
• Special Perks Just for You.We offer you other exciting benefits such as meal vouchers for your healthy breaks as well as corporate shopping benefits.
• Health is a priority.We offer private health insurance, and you can also benefit from our corporate mental health counselling!

YOUR IMPACT

We believe that professional growth comes from taking ownership, continuously learning and making a meaningful contribution.

As part of our Billing team, you will have the opportunity to:

• Develop your expertise across invoicing, vendor portals, Accounts Receivable and collections.
• Grow from managing assigned billing activities to owning a customer portfolio end-to-end.
• Progressively take responsibility for more complex accounts, problem-solving and stakeholder management.
• Strengthen your analytical and reporting skills.
• Contribute to process improvements, automation and more efficient ways of working.
• Develop your AI competence and explore responsible applications of AI in daily operations.
• Learn from colleagues, share knowledge and grow in a collaborative environment.

We value development not only through the volume of work handled, but through increasing accuracy, ownership, problem-solving capability, collaboration and business impact.

As a Billing Operations Specialist, you will play an important role in ensuring accurate billing, supporting timely cash collection and delivering a positive customer experience.Your key responsibilities will include:

• Manage an assigned customer portfolio across billing and collections activities.
• Prepare and issue accurate invoices based on approved billing data.
• Verify customer information, purchase orders and supporting documentation to ensure first-time-right billing quality.
• Submit invoices through customer/vendor portals and monitor their status until acceptance.
• Maintain vendor portal access, documentation and submission requirements.
• Investigate and resolve standard invoice or portal rejections.
• Monitor Accounts Receivable (AR) aging and identify overdue invoices requiring action.
• Proactively follow up with customers on outstanding payments and expected payment dates.
• Maintain accurate records of collection activities, payment commitments and open actions.
• Escalate payment delays, disputes and recurring issues when necessary.
• Prepare accurate and reliable billing and collection reports.
• Collaborate with Accounting, Customer Success and other internal stakeholders to resolve issues.
• Identify opportunities to reduce rework, improve processes and increase operational efficiency.

Your work will directly contribute to billing accuracy, customer satisfaction and healthy cash flow.

THIS IS YOU

You bring:

• Experience in billing, Accounts Receivable, collections, finance operations or a comparable role.
• A strong ownership mindset and the ability to follow tasks through to completion.
• High accuracy and attention to detail, especially when working with financial data and reporting.
• The ability to organize your workload, manage competing priorities and meet deadlines independently.
• Confident and professional communication skills when interacting with customers and internal stakeholders.
• A solution-oriented mindset and the willingness to investigate issues before escalating them.
• Good Excel skills and confidence working with finance and business systems.
• Ideally, experience with ERP systems and customer/vendor portals.
• A collaborative attitude and willingness to support colleagues and share knowledge.
• Curiosity and openness to learning new tools, improving processes and adopting AI-supported ways of working responsibly.