Employment Opportunities

CTA is a global endeavour to build the world’s largest and most sensitive high-energy gamma-ray observatory, which is expected to cost in the region of €300 million for equipment and an additional 1,500 person-years of effort. Imminent site preparations and construction of CTA’s first telescopes have prompted a significant recruiting effort.


The project office is responsible for the functions of general project management, technical coordination and system integration for the CTA construction project. While most positions will be located in Bologna, some will be located on the CTA sites in Chile and La Palma.


In addition to CTAO gGmbH/Project Office employment opportunities, this page features some of the available CTA-related positions with CTA’s Consortium institutes.


All applications and enquires should be sent to


CTAO gGmbH is an equal opportunity employer.


Privacy policy on the personal data processing of candidates

CTAO gGmbH / Project Office Positions

The Cherenkov Telescope Array (CTA) is an international project to build the next generation ground-based observatory for gamma-ray astronomy at very-high energies with up to 118 telescopes located in the Northern and Southern Hemispheres. Astroparticle physicists from about 200 research institutions from 32 countries conceived CTA and are designing and prototyping hardware and software contributions to CTA.


The Cherenkov Telescope Array Observatory (CTAO) organization with its headquarters in Bologna (Italy) and its Computing Department in Zeuthen (Germany) is responsible for the construction and operation of the two CTA observatory sites, one in the Northern Hemisphere on La Palma (Canary Islands, Spain) and one in the Southern Hemisphere in the Atacama Desert (Chile), as well as the Science Data Management Centre in Zeuthen (Germany). CTA will be the world’s largest and most sensitive instrument for high-energy gamma-ray astronomy with the detailed design and preparation well underway. It will be built with a significant amount of in-kind contributions from participating institutions.


For its Project Office Computing Department, the CTAO is seeking a


Senior Software Engineer / Deputy Team Coordinator – Array Control and Data Acquisition


As part of the CTAO Computing Team, the holder of the position will participate in coordinating the work package Array Control and Data Acquisition (ACADA) system. ACADA is one of the major CTA software systems – details can be found at the CTA Computing pages at


The successful candidate will support the ACADA Coordinator in all technical aspects required for the implementation, testing, integration, and deployment of the ACADA system. Working with the team of ACADA sub-system contributors, the ACADA Assembly, Integration and Verification (AIV) team, industry and other Computing department experts, the successful candidate will play a key role in the construction of the Array Control and Data Acquisition software for one of the largest scientific installations ever built. He/she will collaborate with personnel from the Systems Engineering and Project Management teams of the CTAO Project Office in Bologna, the array sites in Chile and La Palma as well as from contributing institutions.


Main tasks and responsibilities:


  • Participate in the definition of the technical solution of the ACADA system, including the evaluation of technologies and architectural solutions.
  • Specify and manage the external and internal interfaces between the ACADA software components and produce and maintain the associated documentation.
  • Coordinate the AIV activities in ACADA, which involves coordinating the system tests, integration, and quality assurance.
  • Produce Technical Documentation for the ACADA system, which includes, among other: Use Cases, Test Cases, Specifications, Software Quality and Maintenance procedures.
  • Manage the internal change control of the ACADA elements during the system construction.
  • Support and guide the software development of the ACADA team members.
  • Act as ACADA Deputy Coordinator with further specific tasks as assigned by the ACADA Coordinator.


Reports to:


CTAO ACADA Coordinator.


Qualification and Experience:


  • Completed scientific higher education in computer science, computer engineering, information technology, physics, mathematics, or equivalent knowledge.
  • At least five years of increasingly technical work experience or a combination of education and relevant experience. Experience with control systems is an advantage.
  • Expert in aspects of the software lifecycle: management, requirements, architecture, design, code, test, integration, deployment, and maintenance.
  • Deep understanding of information technology approaches, applications (which may include scientific applications), tools, and methodologies, as well as a broad background in a variety of technology platforms.
  • Good command of at least one of the following programming languages: C++, Java, and Python.
  • Good command of object-oriented designs principle and design patterns.
  • Familiarity with UML and/or SysML.
  • Experience with SCADA systems, in particular, used in scientific installations such as TANGO, EPICS, ACS, WinCC OA, OPC UA, etc. will be considered a plus.
  • Familiarity with formal software requirements engineering and architecture specification practices will be considered a plus.
  • Experience with the coordination of geographically distributed team members.
  • Experience with observatory construction and/or operation is considered an advantage.


Key Competences:


  • Ability to work effectively as a team player in an international, multi-cultural, distributed and complex project environment.
  • Ability to understand and communicate complex technical and scientific information.
  • The ability to build strong and effective links inside the organization and with staff of contributing partners.
  • Excellent writing and organizational skills with an eye for detail, precision, and consistency.
  • Excellent communication skills and a command of English are essential.


Remuneration and Contract:


CTAO offers an attractive remuneration package including a competitive salary.

The contract is an open term contract subject to successful completion of the probation period.


Duty Station:


CTAO Science Data Management Center in Zeuthen (Germany) with visits to the CTAO Headquarters in Bologna (Italy), contributor and array sites.




Applications with full CV and a cover letter in English should be sent to, indicating position reference “Senior Software Engineer / Deputy Team Coordinator – ACADA” and the names of three referees with contact details. By submitting applications candidates:

  1. Acknowledge CTAO might contact referees at any stage of the process without prior notice.
  2. Authorize the processing of their Personal Data as stated in CTAO Privacy policy on the personal data processing of candidate

CTA is an equal opportunity employer. For more information, please visit, or contact the CTAO ACADA Coordinator Dr. Igor Oya, or the CTA Project Manager Dr. Wolfgang Wild,


Closing date: March 1st 2021

CTA Consortium Positions

Job no: 496172
Work type: Staff
Location: Newark
Categories: Research & Laboratory, Full Time

Applications are invited for a postdoctoral researcher position within the gamma-ray astrophysics group in the Department of Physics and Astronomy and the Bartol Research Institute at the University of Delaware. The appointment is for at least two years with extensions possible, subject to performance and availability of funds.


The Delaware gamma-ray group is a member of the VERITAS and CTA projects, and has played a leading role in the technical and scientific development of these facilities. The candidate will have the opportunity to work with data and Monte Carlo simulations from both projects. They may also contribute to the development of the novel prototype Schwarzchild-Couder telescope. Scientific interests of the group are broad, and include the study of high energy emission from Galactic sources such as gamma-ray binary systems, supernova remnants and pulsar wind nebulae, and the search for rapid transients associated with fast radio bursts.


A Ph.D. in physics or astronomy is required, and the successful applicant is expected to have significant experience with the science and tools of astroparticle physics / multimessenger astronomy.


Interested applicants should submit:

• a curriculum vitae

• A brief (1-2 page) description of research experience

• a list of publications

• three references

Position is open until filled.

Applications close: Open until filled


Apply here:

Postdoctoral position in High-Energy Astrophysics

CEA Paris-Saclay, IRFU, Astrophysics department


Start of candidate selection: March 1st, 2021


CTA is the next generation ground based gamma ray observatory. With tens of telescopes on sites in both hemispheres, it will allow probing the high-energy sky with an unprecedented sensitivity and angular resolution, in the energy domain from a few tens of GeV to a few hundreds of TeV. The CTA group at the Astrophysics department of IRFU invites applications for a post-doctoral research position in high-energy astrophysics in the context of the start of the construction of the telescope arrays and the first real data analysis.

The objective is to contribute to the improvement and go toward finalisation of the CTA data pipeline software, aiming at producing sky images from the telescope array data. A prototype version has been made available and has now to be adapted to the construction phase of the observatory, and later its full exploitation. A particular effort is required to tune the existing implemented algorithms to real data in particular for what concern the data volume reduction (image cleaning) and the determination of energy and particle discrimination using supervised artificial intelligence. The development will be made in the context of the early science phase of CTA, giving the opportunity to cover science subjects to be discussed with the candidate.

The candidates should hold a PhD in subatomic physics, astroparticle or astrophysics with a strong motivation in software and algorithm developments as well as formal code release and documentation, the understanding of experimental data and physics analysis. The software will be written in Python and experience in object-oriented programming is appreciated.

The position is available from mid- 2021 for a period of up to 3 years. The position will remain open until filled. The candidate selection will start on March 1st.

The applicant should send the following documents in a digitized format to Thierry Stolarczyk, head of the group (

–          A letter of motivation;

–          A curriculum vitae, a list of relevant publications;

–          The names of at least two references and at least two letters of recommendation.


IRFU is the largest fundamental research institute of CEA, in the heart of the Paris-Saclay University, 40 km south of Paris. It covers major science fields in particle and nuclear physics and astrophysics, with a strong participation in instrumentation. The astrophysics department of IRFU is a joint CEA Paris-Saclay, CNRS, Paris- University laboratory. It comprises 200 scientists, engineers, and technicians and covers astrophysics from planetology and stellar formation to high-energy astrophysics, galaxy dynamics and cosmology. The CTA group consists of about ten scientists involved in high-energy astrophysics through various projects or observatories (HESS, Fermi, Integral, SVOM, XMM-Newton, Antares), with expertise in galactic science and GRB. The CTA data pipeline development is currently coordinated in the group.

More information:

–          Irfu:

–          Irfu Astrophysics department:

–          The Cherenkov Telescope Array, CTA :


Th. Stolarczyk

Department of Astrophysics – CTA Science Leader


+33 1 69087812 – thierry.stolarczyk@cea.fr

CEA Saclay – Irfu/DAp, UMR AIM – Orme des merisiers, Bât. 709 – 91191 Gif-sur-Yvette Cedex, France