To strengthen its CTAO-North array team in La Palma, Spain, the CTAO is seeking an On-Site IT and Software Technician to work on the maintenance of the telescope network software environment and monitoring software of the Large-Sized Telescopes (LSTs), in particular during the first two years, and then to work on the maintenance and operation of the Observatory’s on-site IT network and maintain its software. The On-Site IT Technician and Software Maintainer will collaborate closely with CTAO In-Kind Contribution (IKC) partner the LST Collaboration, as well as the Central Organisation Computing Groups.
Support the maintenance of the network and software environment of the telescope control and monitoring software of the LSTs.
On-site optimisation of the monitoring software of the LSTs.
Help in creating software tools for telescope operation and maintenance.
Contribute to keeping the IT documentation (manuals, checklists, etc) updated.
Contribute to the definition of the processes and procedures for the future technical operation and maintenance of the Observatory’s IT systems.
As the Medium-Sized Telescopes (MSTs) and other auxiliary instrumentation are added to the Observatory in the future, participate in their integration into existing IT infrastructure and network and support the issuance of relevant operations and maintenance documentation.
Assist the IKC partners in questions of onsite network and remote access.
Use the maintenance software of CTAO to document and track technical problems and their solution.
After provisional acceptance of the CTAO telescopes, plan and perform the maintenance of the IT systems.
Participate in the transition of the data centre from LST-1 to the CTAO Operations building.




Participate in integration and commissioning of the IT infrastructure in the CTAO-North operations building.
Perform maintenance of the operations building data centre and related network infrastructure.
As a minimum, IT related degree for a technical college (Ciclo Formativo de Grado Superior (CFGS) or another relevant field, or equivalent experience.
More than two years of experience in the maintenance and operation of networks, IT infrastructure, remote connections and data centres. Experience at astronomical telescopes and instrumentation as well as on monitoring software is an advantage.
Familiarity with Unix and Linux server administration, common computing software, and operating systems.
Solid knowledge of python and scripting languages.
Solid networking foundation: switching, routing, VLANs, firewalls; Familiarity with databases and their manipulations (MySQL, MariaDB, PostgreSQL, MongoDB) is an advantage.
Valid driver’s license, and the ability to drive manual transmission, AWD vehicles on mountain roads.
Flexibility to work outside regular working hours, during the weekends and holidays, as required.
Excellent communication skills in English, both oral and written. Command of the Spanish language is an advantage.
The role involves work in data centre and telescope environments, including lifting and handling rack-mounted equipment.
and in the CTAO office at sea level on the island of La Palma, located in the Canary Islands, Spain. Contract: Open-term, full-time, NCBA Convenio Colectivo del sector de empresas de ingeniería y oficinas de estudios técnicos. Applications are accepted and evaluated without distinction on any grounds of gender, race, colour, ethnic or social origin, genetic features, language, religion or belief, political or any other opinion, membership of a national minority, gender identity, property, birth, disability, age or sexual orientation.
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📌 On-Site IT and Software Technician (Breña Baja)
🏢 CTAO ERIC
📍 Breña Baja