The Clean Aviation Joint Undertaking (CAJU) is looking for one trainee to support the Communications team
Period: From 1 March 2026 to 31 August 2026
Applications may be submitted up to 31st of January 2026 at 23:59 CET (Central European Time / Brussels time)
1. Who we are
The Clean Aviation Joint Undertaking (CAJU) is the European Union's flagship research and innovation programme driving the transformation of aviation towards a sustainable, climate-neutral future. By combining the expertise and resources of both public and private sectors, CAJU develops cutting-edge technologies that will enable a major leap in aircraft performance by the 2030s, supporting the EU's goal of climate neutrality by 2050.
At the heart of a diverse European ecosystem—including the aeronautical industry, pioneering SMEs, research institutions, and academia—CAJU serves as a hub for bold ideas and breakthrough innovations. More information on:
2. Overall purpose of the traineeship
The JU operates a traineeship program. The program gives trainees an understanding of the JU and its role within the activities of the European Union, enables them to acquire practical knowledge of the JU and obtain professional experience in the course of their work.
The trainee will have an opportunity to:
• Work in a multicultural and multilingual environment.
• Put into practice knowledge acquired during their studies, particularly in their specific areas of competence.
• Experience the professional life and its constraints, duties and opportunities.
• Acquire practical experience and knowledge of the day-to-day work of an EU organisation.
The placement is for a maximum period of 6 months.
The trainee will have an adviser within the CA JU Communications team. The adviser will guide and closely follow the trainee during the traineeship, acting as a mentor.
3. Functions and responsibilities of the trainee
According to the needs at the time of the traineeship, the trainees will be involved in the tasks listed below:
• Draft content for social media and other communication material (e.g., web- articles, publications, e-newsletters, web content)
• Contribute to the graphic design of CA JU communication material and coordinate the graphic production with external suppliers;
• Provide support in organising events, air shows and exhibitions;
• Provide support in running campaigns;
• Update content on CA JU websites; and for the CA JU Intranet
• Contribute to the CA JU stakeholders and media relations;
4. Requirements
To be eligible, candidates must meet the following requirements:
• Be national of one of the Member States of the European Union;
• Possess a University degree by the closing date for applications. Candidates invited to the interviews must provide copies of the diplomas or other relevant certificates;
• Degree in Communication, Journalism, Arts, Public Relations, Marketing or related subjects;
• A very good command of oral and written English and of one or more other official Union languages;
• Ability to manage priorities, to work under pressure and to meet tight deadlines;
• Proficiency in MS Office in particular, Word processing, Excel spreadsheets, Outlook, PowerPoint;
• Knowledge of graphic design applications, such as Canva
• Excellent writing skills and proven experience in the field of Communications;
• Attention to details and ability to multi-task;
• Good interpersonal and communication skills, team player.
Applications will not be accepted from candidates who:
• have already benefited or benefit from any kind of in-service training (formal or informal, paid or unpaid) within a European institution or body, or
• who have had or have any kind of employment within a European institution or body, including anyone who is or has been an assistant to a Member of the European Parliament, an intra-muros consultant or researcher, a temporary staff member, a contract staff member, an auxiliary staff member or an interim staff member of any EU institution, body, delegation or representative office.
5. Grant
The JU pays a monthly grant of 1,538.16 € net per month.
Any trainee who terminates his/her traineeship earlier will be required to reimburse that part of the living allowance which he/she may have received, relating to the period after the termination date.
If a trainee wishes to terminate his/her traineeship earlier than the date specified in the contract, a written request must be submitted by the trainee to the Clean Aviation Joint Undertaking, Human Resources Unit for approval. This request, stating the relevant reasons, must be submitted at least three weeks in advance of the new termination date foreseen, via his/her adviser and the training co-ordinator. Trainees may only terminate their contract on the 1st and 16th of the month.
6. Future Employment
Admission to a traineeship does not confer on trainees the status of officials or that of other servants of the European Institutions, nor does it entail any right or priority with regard to an appointment in the services of the Clean Aviation Joint Undertaking.
7. Holidays
Trainees should keep the same hours of work (40 hours per week) and have the same official public holidays, if they fall during their traineeship, as Clean Aviation Joint Undertaking employees.
Trainees are entitled to 2 days leave per month. This entitlement is acquired pro rata to the months worked counted from the first day of the month. Days of leave not taken are not paid in lieu.
Leave requests should respect the needs of the Unit. They must first be approved by the adviser and then checked and approved by the person responsible for holidays within the Clean Aviation Joint Undertaking. When trainees are absent without justification or without notifying their adviser and Human Resources Unit, the days of absence are automatically deducted from the trainee's leave entitlement.
8. Absence in case of sickness
In case of sickness, trainees must notify their advisers and HR immediately, and if absent for longer than two days, must produce a medical certificate, indicating the probable length of absence, which must be forwarded to the Human Resources Unit. A trainee who is absent because of illness may be subject to medical checks in the interest of the service.
9. Confidentiality
Trainees must exercise the greatest discretion regarding facts and information that come to their knowledge during the course of their training. They must not, in any manner whatsoever, disclose to any un-authorized person any document or information not already made public.
They will continue to be bound by this obligation after the end of their training. The Clean Aviation JU reserves its legal right to terminate the traineeship and to pursue any person who does not respect this obligation.
Trainees must not have any professional connections with third parties which might be incompatible with their traineeship (i.e. must not work for lobbyists, press, etc.), and they are not permitted to exercise any other gainful employment during the period of the traineeship which may adversely affect the work assigned during the traineeship. If a conflict of interest should arise during their assignment, trainees should immediately report this to their adviser, in writing.
10. Sanctions and disciplinary measures
Trainees must exercise their duties and behave with integrity, courtesy and consideration. If the conduct of the trainee does not prove satisfactory, the adviser and the Human Resources Unit, may at any moment decide to terminate the traineeship.
11. Incapacity of Performance
Clean Aviation JU, following a justified request by the adviser and approved by the Human Resources Unit, reserves the right to terminate the traineeship if the level of the trainee's professional performance or knowledge of the working language is insufficient for the proper execution of his/her duties.
12. Insurance
Sickness Insurance: the Clean Aviation Joint Undertaking does not cover sickness insurance and trainees must take out such insurance prior to the start date of their traineeship in Clean Aviation Joint Undertaking. Proof of this insurance must be presented to the Human Resources Unit one week before the start of the traineeship period.
13. Travel Allowance
CAJU will reimburse a travel allowance to the selected trainee, to compensate the expenses incurred at the beginning and at the end of the traineeship from the place of residence, which is usually the address provided for correspondence
Against submission of travel proofs, full reimbursement of one trip (train ticket or airplane ticket) to take up duty and one trip at the end of the service.
The trainee must complete a minimum of 3 months of the training period to qualify for the travel allowance. Trainees whose place of recruitment is less than 50 km from the place of employment are not entitled to a travel allowance.
14. Fiscal Arrangements
Grants awarded to trainees are not subject to the special tax regulations applying to officials and other servants of the European Communities. Trainees are solely responsible for the payment of any taxes due on Commission grants by virtue of the laws in force in the State concerned. On demand of the trainee, the Human Resources Unit will provide a certificate for tax purposes at the end of the traineeship period. This certificate should state the amount of grant received and confirm that tax and social security payments have not been made.
15. Closing date
Applications must be submitted by 31st January 2026, 23:59 CET (Central European Time / Brussels time). The vacancy is published here
The closing date of this vacancy may be prolonged.
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