Billing Specialist - Fixed term contract

Published on 24/07/2026

JAO logo

JAO


Working time
Type of contract
Educational level

About our company


“We partner with Europe to empower and enhance a sustainable energy market”.


Located in Luxembourg, we are a service company that hosts Europe's single leading trading platform(e-CAT) for cross-border transmission capacity. On behalf of TSOs, we auction the available long and short-term transmission capacity rights on all internal EU borders.


On the 1st of October 2018, JAO became the Single Allocation Platform (SAP) for all European Transmission System Operators (TSOs) that operate in accordance with EU legislation, since it is able to implement and fulfill all regulatory obligations and requirements. We provide accounting (clearing and settlement), contracting, reporting and project support services.


About the job

We are looking for a Billing Specialist to join our team on a fixed-term contract of up to 15 months to cover a maternity and parental leave. In this role, you will be at the heart of our billing, clearing, and settlement operations, ensuring the accurate and timely execution of key financial processes. You will work in a dynamic and collaborative environment, contribute to process improvements, and help deliver high-quality services to our customers and stakeholders.


Key activities in the position:

  1. Handle the various billing and settlement mechanisms:

    1. Recharging of Central Contracting activities

    2. Explicit and implicit auctions, including relevant corrections

    3. Balancing projects

    4. Interest rates and exchange rates recharges

    5. Service fees

  2. Define and manage billing requirements for clearing and settlement services

  3. Management of Accounts Receivable, cash collection and reminders to customers

  4. Draft and keep billing procedures up to date

  5. Assist with audit requests related to billing and settlement processes

  6. Handle requests via email and ticketing tool, related to billing and settlement activities

  7. Perform testing on invoicing systems (SAP and/or others) related to changes and developments for billing mechanisms

  8. Perform investigations and corrections following questions from customers

  9. Master data management

  10. Deliver invoices via digital and traditional mail services

  11. Perform any other supporting tasks, as requested


We are looking for someone with the following skills set:

  1. Degree Education Level in areas of Business Administration or Accounting/Finance/Economics (3 years after A-Level)

  2. Fluent in English with excellent written and spoken skills

  3. At least 3 years’ experience in similar role

  4. Knowledge of ERPs, SAP FI/CO would be considered an asset

  5. Proficient in MS Office more particularly in Excel

  6. Able to deliver work of a consistent level of accuracy with attention to detail

  7. Excellent analytical skills and IT orientation

  8. Customer orientation and keen on problem solving

  9. Good interpersonal skills

  10. Open-minded and proactive

  11. Dynamic, flexible and reliable

  12. Excellent communication and organisational skills


Additional Requirement

According to the Luxembourg law of July 23rd 2016 (as amended), the successful applicant will be required to provide a Criminal Record before signing the employment contract. 


We offer

  • Yearly salary paid on 13 months basis

  • 31 days holidays per year

  • Up to 40% of home office for Luxemburgish residents, 25% maximum for non-residents

  • 150 Euros per month towards transportation (Bus/Train) or full reimbursement of parking tickets outside the office

  • 50 Euros per month towards sport

  • 18 Luncheon vouchers per month

  • DKV complementary health insurance for you and your close family members

  • Pension plan, including Life and Disability Benefits

  • 1,000 Euros towards training per year


In an industry that poses unique challenges and operates under stringent regulations, we are committed to creating an environment where our employees can build a solid foundation of knowledge and expertise, while growing and thriving in a positive, professional atmosphere. Join us for new professional adventures!


Apply online

Billing Specialist - Fixed term contract

 
 
 
 

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