Billing & Operational Control Officer (Junior)

moOngy; Lisboa; On-site; EUR 23,000 - 32,000; Full time

Job summary

MoOngy is seeking a motivated Junior Billing & Operational Control Officer to join our finance/operations team. The role emphasizes data accuracy, cross-functional collaboration, and a start in a numbers-driven environment.

Hybrid work with 2 days in the office, and six months of full-time office-based work to start. Responsibilities include validating and consolidating monthly billing data, monitoring consultant time tracking, data accuracy, PO management, and assisting with onboarding and

Job description

Founded in 2005, MoOngy is an international group specialized in Engineering and IT, operating across Europe and North Africa.

With a presence in 14 countries, more than 40 entities, and 9,500 talents, we continue to grow every day thanks to one simple thing: people who are genuinely passionate about technology and innovation.

The Role: Billing & Operational Control Officer (Junior)

Work Model: Hybrid (2x per week at the office), but the first six months are office-based full-time

Languages: English (Mandatory) | French and Spanish (Nice to have)

Eligibility: Currently living in Portugal and legally authorized to work there

We’re looking for a motivated and detail-oriented Junior Billing & Operational Control Officer to join our team. If you’re starting your career in finance or operations and enjoy working with numbers, data accuracy, and cross-functional collaboration, this could be the perfect opportunity for you.

What you'll do:

• Support the validation and consolidation of monthly billing data
• Monitor consultant allocation and time tracking records
• Help identify and correct data inconsistencies
• Assist in the management of purchase orders and contract documentation
• Support invoice preparation and issuance processes
• Assist with client onboarding activities, including compliance and documentation checks
• Collaborate with finance, operations, and commercial teams on daily activities
• Contribute to process improvement initiatives and reporting activities

What we're looking for:

• Experience in billing, finance, administration, operations, or a related area (internships included)
• Strong attention to detail and organizational skills
• Analytical mindset and willingness to learn
• Good knowledge of Excel (mandatory)
• Experience with ERP systems or Power BI is a plus
• Basic understanding of invoicing or financial processes is an advantage
• English mandatory | French or Spanish is a plus
• Degree in Economics, Management, Finance, Accounting, or a similar field

Moongy:

• Innovation & Impact:Play a central role in driving the future through creative solutions
• Continuous learning: Trainings, certifications, and structured career growth.
• Team spirit: An international community where collaboration means something.
• Diversity & inclusion: At MoOngy, everyone belongs — no fine print.

Diversity & Inclusion

At MoOngy Group, we are committed to equality and diversity. We foster a safe, inclusive, and respectful environment where everyone has equal opportunities.

We do not discriminate based on age, origin, gender, sexual orientation, disability, or any criterion unrelated to skills and merit.