Employment Opportunities

The Cherenkov Telescope Array Observatory (CTAO) will be the world’s largest and most sensitive ground-based gamma-ray observatory. With two telescope array sites in both hemispheres, one on La Palma (Spain) and one in Paranal (Chile), it will cover the full night sky, detecting high-energy radiation from the Universe with unprecedented accuracy and sensitivity. Continental Europe will host its headquarters in Bologna (Italy) and the Science Data Management Centre (SDMC) in Zeuthen (Germany).


The Observatory is funded through a combination of in-kind-contributions and directly funded efforts, with more than 10 countries actively participating as shareholders, and more than 150 institutions from 25 countries taking part in the project. The CTAO was promoted to a “Landmark” on the European Forum on Research Infrastructure (ESFRI) Roadmap 2018, and was ranked as the main priority among the new ground-based infrastructures in the ASTRONET Roadmap 2022-2035.


The CTAO gGmbH is an equal opportunity employer. Applications are accepted without distinction on any grounds of gender identity, sexual orientation, age, race, ethnic or social origin, genetic features, disability, language, philosophical, religion or political conviction or membership of a national minority.


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In addition to the CTAO gGmbH employment opportunities, this page features CTAO Secondment and other partner positions.

CTAO gGmbH Positions

The CTAO is now entering the construction phase of the project heralding increased levels of support, infrastructure development, telescope assembly integration and test with associated organizational growth. We are looking for a strong Project Manager (M/F/D) to lead the team to success as part of the CTAO executive management.



  • Organize, direct and control the activities necessary to build and commission the CTAO and to prepare operation of the Observatory so that the project technical, cost and schedule objectives are met.
  • Lead the CTAO Project Office and delegate tasks and responsibilities to the Task and Element Managers as necessary.
  • Develop and update the Project Plan, including budget and Cost Book, Risk Register, integrated schedule and technical goals, annually or as required.
  • Manage the technical progress, cost and schedule of the project using formal management techniques working with Task Managers and In-Kind Contributors.
  • Prepare progress reports for the CTAO Director and Council as required.
  • Manage In-Kind Contribution and Hosting Agreements, that define the contractual obligations of contributors and hosting sites respectfully.
  • Chair the CTAO Configuration Control and Risk Management Boards.



  • University degree in engineering, physics, astronomy or equivalent.
  • Extensive project management experience at a senior level in an international organisation, public body, or multinational company, with a record of successful project management outcomes.
  • Experience managing multi-disciplinary and multi-cultural teams of scientists, engineers, and administrators developing scientific research infrastructures.
  • Experience with consortia/in-kind contribution funding models is highly desirable.
  • Experience with formal cost and schedule control techniques, such as Earned Value Management and Monte Carlo analysis, is highly desirable.
  • Experience with large international construction projects involving high-tech as well as civil construction at remote sites is highly desirable.
  • Flexibility to adapt quickly and resourcefully to shifting priorities and requirements and be able to implement a tailored management approach to accommodate cost constraints.
  • Excellent negotiation and influencing skills to accommodate stakeholder interests and facilitate collaboration with contributors.
  • Excellent communication and writing skills in English. Knowledge of Spanish will be a significant advantage.



CTAO Director General



Bologna, Italy. Travel to CTAO sites, locations of in-kind contributor teams in Europe and occasionally to Asia, the Americas and Australia is required.



CTAO offers an attractive remuneration package including a competitive salary and benefits package. The contract is a 5-year contract with the chance of renewal.

Currently, Italy is offering attractive tax benefits for researches and workers moving their residence as part of the overall goal to make the country an international leader in science.



Send your CV and cover letter in English to, indicating the position “Project Manager” and the names of two referees with contact details.

For more information on the advertised position please contact the Director General, Stuart McMuldroch:




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CTAO Secondment Positions

No secondment positions available at the moment.

CTAC Positions

DESY, with more than 3000 employees at its two locations in Hamburg and Zeuthen (Germany), is one of the world’s leading research centres. The DESY site in Zeuthen hosts one of the CTAO’s locations, the Science Data Management Center (SDMC), and is a large contributor to the CTAO as responsible for the design, construction and deployment of the Medium-Sized Telescope (MST) structures. To contribute to the commissioning and testing phase of the MST, DESY is looking for a postdoctoral researcher.


The role will focus on:

– Analysis of gamma-ray telescope data

– Support the commissioning and performance verification of the first MSTs on both observatory sites

– Design, test and implement MST control and configuration software

– Support the software development for the CTAO



– PhD in physics or astronomy or equivalent qualifications

– Experience in hardware or instrument development and testing

– Experience with the operation of telescopes or detectors and development of software for readout, control, or monitoring

– Interest in software design, development and management

– Knowledge of 00 programming (C++ or Java) and scripting languages (ideally python) Experience in astroparticle-physics and data analysis Fluent in English


Deadline to apply: 20.09.2023

For further information please contact Markus Garczarczyk +49-33762-7-7266 ( or David Berge at +49-33762-7-7291 (

Application and more information available on DESY’s website. 

DESY, with more than 3000 employees at its two locations in Hamburg and Zeuthen (Germany), is one of the world’s leading research centres. The DESY site in Zeuthen hosts one of the CTAO’s locations, the Science Data Management Center (SDMC), and is a large contributor to the CTAO as responsible for the design, construction and deployment of the Medium-Sized Telescope (MST) structures. For the construction phase, DESY is providing a central PLM-based platform for technical documentation and engineering collaboration, and is looking for a Systems Engineer. The Systems Engineer will be a member of the PLM team at DESY Hamburg and travel frequently to the gamma astronomy groups at DESY Zeuthen.


The role will focus on:

– Transfer the current folder-based document repository and its established procedures to PLM

– Agree and implement change management process

– Implement the full technical documentation of one of the CTA telescopes in PLM as a reference

– Document procedures and perform user training

– Participate in our central PLM user support team



– Completed higher education in systems engineering or a technical/scientific field

– Profound experience in one of the areas of systems- , requirements-, mechanical- or electrical engineering or digitization of engineering processes

– Experience in the planning and development of complex interdisciplinary systems or facilities, ideally in creating functional descriptions and system models

– Experience in the use of PLM systems, in particular Siemens Teamcenter, is an advantage

– Well-organized and independent yet team-oriented working style

– Good communication skills, and good command of written and spoken English


Deadline to apply: Open

For further information please contact Lars Hagge at +49 40 8998-2473 (

Application and more information available on DESY’s website. 

The DPNC (Département de Physique Nucléaire and Corpusculaire) is a worldwide-recognized center for fundamental research in physics, including Particle Physics, Astroparticle Physics and Cosmology, and provides an international, dynamic, and competitive environment for training of young researchers. The Multi-messenger Astronomy group at the University of Geneva (UniGE/DPNC) invites applications for a Postdoctoral Research Associate position for fundamental work for the construction of the Cherenkov Telescope Array Observatory (CTAO). The successful candidate will be offered an initial 1-year contract, renewable. The salary will depend on the experience of the candidate from postdoc to senior postdoc (Maître Assistant) level.


Job description:

The UniGE/DPNC group leads the Calibration Pipeline subsystem of the CTAO Data Processing and Preservation System (DPPS) and contributes to the development of the Data Quality Pipeline. The DPPS is a software system responsible for the reconstruction, processing, quality monitoring, and preservation of data products of the CTAO. The selected candidate will work on the development and implementation of the data quality monitoring tools, and related software infrastructure and on its application to the data analysis of the Large-Sized Telescopes (LST) of the CTAO. The candidate will be integrated in the LST and CTAO International Collaborations.



– Experience with Data Quality Monitoring in the domain of (astro)particle physics
– Strong knowledge of Python
– Familiarity with version control systems (Git/GitLab)
– Ph.D. in Physics/Astronomy/Computer Science or related discipline


Preferred date of start: Nov. 2023 – Jan. 2024

Interested applicants should send a motivation letter, a Curriculum Vitae, at least one reference letter or the contact details of at least a reference person by electronic mail to: Prof. T. Montaruli (, Dr. M. Dalchenko ( and Dr. M. Heller (

More information: PDF

Adjunct Professor David Williams in the Santa Cruz Institute for Particle Physics (SCIPP) at the University of California, Santa Cruz (UCSC) invites applications for the position Postdoctoral Scholar in Very High-Energy Gamma-Ray Astrophysics. The successful candidate will be expected to take a lead role in the development of optics alignment systems for the medium-sized gamma-ray telescopes of the Cherenkov Telescope Array Observatory (CTAO). They will also have the opportunity to participate in science studies using data from the VERITAS gamma-ray telescopes and CTAO.


UCSC is a founding member of the U.S. group participating in a worldwide effort to develop CTAO, the next generation arrays of imaging atmospheric Cherenkov telescopes to study very high-energy gamma-ray sources. The postdoctoral scholar will join a new effort by the SCIPP group, in collaboration with both U.S. and international partners, to develop optics alignment systems for the two designs of medium-sized gamma-ray telescopes that are being developed for CTAO, covering the core energy region of 100 GeV – 10 TeV. The scholar will be expected to lead laboratory work, assisted by students, to optimize the alignment system design and verify its performance. The scholar will also be expected to interface with potential vendors who will fabricate components and ultimately assist with installation on the telescopes. The SCIPP group is also working on simulating aspects of the telescope performance and array performance for CTAO and on-going studies with the prototype Schwarzschild-Couder Telescope at the Whipple Observatory, adjacent to VERITAS.


Members of the SCIPP group are active in the VERITAS Collaboration, particularly in the study of extragalactic (active galaxies and gamma-ray bursts) and multi-messenger (e.g. gravitational wave events) sources. The postdoctoral scholar will be expected to contribute to these activities or similar studies with early CTAO data. Applicants with expertise or a strong interest in instrumentation for optics or detecting high-energy particles and/or astrophysics of gamma-ray sources are encouraged to apply.


Qualifications (required at time of application)
– Ph.D. (or equivalent foreign degree) in experimental astrophysics, physics, astronomy, or a related field. Ph.D. must be in hand at the time of initial
appointment (rather than at the time of application).



Next review date: Monday, Oct 2, 2023 at 11:59pm (Pacific Time)
Apply by this date to ensure full consideration by the committee.


Final date: Sunday, Jun 30, 2024 at 11:59pm (Pacific Time)
Applications will continue to be accepted until this date, but those received after the review date will only be considered if the position has not yet been filled.


More information and Application: