Internships at CTBTO

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The CTBTO offers a variety of exciting internship opportunities for students and recent graduates who are interested in our mission of achieving a world free of nuclear tests.

Are you passionate about stopping the spread and use of nuclear weapons?

Join the Next Generation of Talent

CTBTO’s internship programme provides university students and young graduates across a wide range of academic backgrounds with the opportunity to gain practical work experience in line with their studies or interests and within a multi-cultural and international environment.

This programme is open to individuals who are enrolled in either undergraduate or graduate programmes, or equivalent institutions. The duration of the internship is normally not less than three months and not more than one year.

CTBTO’s interns contribute to the work of our technical divisions responsible for the International Monitoring System, International Data Centre, and On-Site Inspection. Interns acquire experience in the areas of data analysis, engineering as well as operational and technical inspection support services. Internships are also available in legal affairs, external relations, public information, and human resources.

All internships take place at CTBTO Headquarters in Vienna, Austria where you will be immersed in a multicultural, diverse, inclusive, and international environment.

Details and Requirements

You must fulfill the following minimum requirements and eligibility criteria to be considered for a CTBTO internship:

· At least 18 years of age and no more than 35 years of age before the start date of the internship.

· Have excellent academic performance.

· Have completed at least two years of full-time study at a university or equivalent institution that will lead to the award of a recognized degree. Individuals may apply up to two years after the completion of a bachelors, masters, or doctorate degree. Applications submitted after that time will not be considered.

· Have excellent written and oral communication in English; Knowledge of other official CTBTO languages is desirable.

· Have no immediate relatives (e.g., mother, father, sister, brother) working with CTBTO.

Some internships may require additional professional experience or specific skills.

Application Process

All eligible candidates must submit a completed online application. Available internship opportunities can be found on the CTBTO career portal. Build a compelling job profile through the CTBTO e-Recruitment system as the first step to a great opportunity with CTBTO.

Internship FAQs

An intern’s work schedule shall be agreed in advance of the internship with their supervisor. Most of our internships are full-time, however some interns may work part-time based on an agreement with the supervisor and always in accordance with the normal working hours of the CTBTO.

Interns at CTBTO are granted two and a half days of leave per month starting from the first month of the internship.

The duration of an internship is normally not less than three months and not more than one year.

All applications are carefully reviewed for the respective vacancies. Due to the volume of applications received, only shortlisted candidates will be contacted for further consideration. Candidates can check their individual application status by logging in to the CTBTO e-Recruitment system and by clicking on MY PROFILE >> MY APPLICATIONS. The CTBTO career page provides the status of each of application and the status of the recruitment process.

Successful applicants who are non-Austrian citizens are responsible for obtaining any necessary documents and visas that may be required for entering Austria before starting their internship.

Interns are required to participate in the Commission’s Group Medical Insurance scheme at their own cost, unless they provide proof of alternative equivalent medical insurance coverage.

For successful candidates who are offered an internship and who do not receive any other financial support from an institution, university or other source, a stipend of EUR 500 may be provided, subject to funds availability.

The stipend does not constitute a salary, but is rather an allowance to help to cover basic subsistence costs during the internship period.

An additional maximum of EUR 500 may be provided for accommodation upon submission of the appropriate proof of a rental agreement with a non-family third party.

Candidates will be asked during the application process whether they anticipate receiving financial support and how much. If an intern receives financial support from an institution, university or other source, they must provide all relevant documentation prior to commencing an internship with CTBTO.

Upon award of an internship, the intern shall be responsible for arranging their travel covering all travel costs to Vienna, Austria and living expenses during the internship period.

There should be no expectation of employment at the end of an internship. Following the completion of the internship, an intern may be eligible to apply for vacant positions as external candidates, subject to CTBTO Regulations and Rules, including those governing required break in service of at least six months from the end of the internship to the beginning of any new employment with the Commission. A CTBTO internship is a valuable and well-regarded professional experience and may serve as the foundation for one’s professional career.

You can work for other UN Organizations following the end of your contract with the CTBTO.

CTBTO internship vacancies are announced on the website or advertised through our social media accounts throughout the year. Applications are accepted on a rolling basis and are reviewed at various points throughout the year depending on needs within the PTS. Contact us if you have any further questions regarding CTBTO internships and check out the graphic on the right to learn more about the application process. 


Get Involved

Are you interested in getting involved and promoting the Comprehensive Nuclear-Test-Ban Treaty (CTBT)? Learn more about the CTBTO Youth Group (CYG) and join us today in our efforts to end nuclear testing.

If you are a young scientist or technical expert, check out the CTBT Young Professionals Network (YPN), a community of young scientists and technical professionals working on monitoring and verification of the Comprehensive Nuclear-Test-Ban Treaty (CTBT).   

Learn more about applying for jobs at CTBTO