Who are we?
Mantu is an independent international consulting player, founded in 2007. Bringing together expert and complementary brands, Mantu stands out for the breadth of its spectrum, responding to all business transformation challenges.Its activities are divided into four practices:
Leadership & Advocacy, Technology, Digital Marketing & Experience, Total Talent Management.
A wide range of skills, all serving a single mission: connecting and powering companies with leading teams and technology to succeed faster and sustainably.
From its headquarters in Geneva, Switzerland, Mantu relies on a community of 12,000 talented people in more than 60 countries on 5 continents and has a turnover of 1billion euros.
Job description
You will join our Tax team in Luxembourg as a Junior Tax Officer Intern. You will support corporate tax, structuration projects, and process optimization, contributing to the efficiency and compliance of the group’s financial activities.
Your missions
Corporate Tax
- Assist in updating and adjusting transfer pricing documentation (Local file, Master file).
- Support the implementation of transfer pricing requirements (CBCR).
- Help with the follow-up on ongoing tax audits.
- Assist financial partners in completing annual tax returns.
- Support the creation and submission of tax documentation.
- Answer VAT-related queries and assist with foreign VAT recovery.
Structuration
- Assist in maintaining and updating the Group organizational chart and shareholding structures.
- Participate in intra-group tax analysis, including mergers and acquisitions.
- Support Management Package implementation and follow-up.
- Assist in due diligence tasks for the acquisition of external companies.
IT & Process Optimization
- Support the integration of the Tax department into the group’s ERP system.
Your profile
- Academic background: Master’s degree (ongoing or completed) in Tax Law, Finance, or a related field.
- Strong interest in corporate tax and structuration.
- Fluency in French and English (both written and spoken).
- Proficiency in Microsoft Office (Excel, Word, PowerPoint).
- Proactive mindset and strong analytical skills.
- Ability to work in a fast-paced international environment.
- Experience with AI generative tools is a plus.
What we offer
- An international community bringing together over 110 nationalities.
- A culture where trust is central: 70% of our leaders began their careers in entry-level positions.
- A robust training system through our internal Academy with 250+ available modules.
- A vibrant workplace with frequent internal events (afterworks, team buildings, etc.).
- Strong commitments to CSR through participation in our WeCare Together program.
“Mantu is proud to be an equal opportunity workplace. We are committed to promoting diversity within the workforce and creating an inclusive working environment. For this purpose, we welcome applications from all qualified candidates regardless of gender, sexual orientation, race, ethnicity, beliefs, age, marital status, disability, or other characteristics.”