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Research Software Engineer position the Gravitational-Wave Science Center (GWSC) of the University of Geneva

The Department of Astronomy and the Gravitational-Wave Science Center (GWSC) at the University of Geneva is looking for a Research Software Engineer. This position is funded through a Swiss National Science Foundation (SNSF) FLARE program on critical elements of the low latency computing infrastructure for the International Gravitational Wave detector Network (IGWN). Currently used by the Virgo, LIGO and KAGRA collaborations, the IGWN low latency computing infrastructure is crucial for detecting gravitational wave events with the minimal latency possible, enabling multi-messenger science.

We offer a full-time contract of one year initially, renewable for one additional year upon satisfactory performance. The salary will be in accordance with the candidate’s qualifications, following the regulations of the canton of Geneva for public employees (maximum salary class: 17; see here). The expected starting date of the position is September 1st, 2025. As a Research Software Engineer on the team, you will apply your experience in software engineering to existing scientific analysis pipelines, including AI/ML techniques, with the goal of defining deployment strategies to optimise performance using an end-to-end testbed. Based at the Department of Astronomy of the University of Geneva, this position has a high level of interaction with an international and multicultural scientific community. Working together with experts in this field will give you opportunities to further advance your skills. In this role, you will:

  • Investigate and optimise integration strategies for gravitational-wave analysis pipelines to the end-to-end testbed
  • Develop and deploy key components of the end-to-end testbed
  • Contribute to the development of unit tests and CI/CD pipelines for all software
  • Work collaboratively in a team-based research environment

Position Requirements Education:

  • HES Bachelor degree or equivalent qualification
  • MSc in Computer Sciences, in astronomy, physics an advantage

Professional Experience:

  • Demonstrated experience in writing high quality software, preferably python, using modern best practices with tools like git, CI/CD, containers, etc.
  • Clear and concise written and interpersonal communication skills
  • The ability to understand and solve complex problems as part of a team

The Institute The Department of Astronomy of the University of Geneva offers a modern and vibrant scientific environment with renowned researchers in the domains of stellar physics, exoplanets, galactic and extragalactic astrophysics, observational cosmology, and high-energy astrophysics. It is actively involved in most of the major missions of the European Space Agency and several instrumentation projects at the European Southern Observatory. The Gravitational-Wave Science Center (GWSC) is a newly founded, inter-departmental research center at the University of Geneva. Its goal is to consolidate the gravitational-wave-related activities of the Astronomy department, and the departments of theoretical physics and particle physics, and promote interdisciplinary research in the domain of gravitational-wave science. Application Applications shall contain:

  • A cover letter;
  • A detailed curriculum vitae with links to software repositories and/or technical reports and/or a list of your most relevant scientific publications;
  • The contact information of 2 referees who can later be contacted directly by the search committee
  • Work certificates / letters of recommendation
  • A copy of the candidate’s most advanced degree

Applications should be submitted exclusively on-line by clicking on the following link by July 31 2025 (23:59 Geneva time). APPLICATIONS SENT BY EMAIL SHALL NOT BE ACCEPTED.

The review of applications will start right away.

LIGO Laboratory Job Opening: Senior Vacuum Engineer at LHO (CEBEX)

Caltech’s Laser Interferometer Gravitational-wave Observatory (LIGO) seeks a highly motivated and skilled Senior Vacuum Engineer to join its Cosmic Explorer Beamtube Experiment (CEBEX) team at the Richland, Washington observatory site. LIGO Laboratory is a major National Science Foundation facility dedicated to observing the newly discovered gravitational-wave universe. Jointly operated by the California Institute of Technology and the Massachusetts Institute of Technology, LIGO operates the world’s leading gravitational observatories near Richland, WA and Baton Rouge, LA, as well as campus R&D centers in Pasadena, CA and Cambridge, MA.

To learn more about LIGO Laboratory, please visit LIGO.caltech.edu. The Laboratory’s mission supports the young science of gravitational-wave physics and astronomy and includes observatory operations, analysis and dissemination of astrophysical observations, detector science and technology R&D, gravitational-wave astrophysics, and education and public outreach.

LIGO now also leads the effort to expand humanity’s gravitational wave horizon with a next-generation observatory, Cosmic Explorer (CE). Slated for construction in the 2030’s, CE will be ten times the size and reach of LIGO, able to gather signals from the edge of the observable universe.

The selected applicant will join an elite team charged with conceiving, designing, building, and testing advanced technology for the CE vacuum systems, destined to be the largest ultrahigh vacuum systems ever built. We will exercise and develop this technology in a new, purpose-built UHV research facility, the Cosmic Explorer Beamtube Experiment (CEBEX) Laboratory, located at LIGO Hanford.

Current Washington and Louisiana LIGO installations occupy 4 km scale, 10 million-liter UHV systems operating at one trillionth of atmospheric pressure (10-9 millibar), making them the two largest contiguous UHV volumes ever constructed. To further expand sensitivity, a new observatory will be constructed: Cosmic Explorer (CE). This observatory will require beamtubes 10x longer, up to 40 km in length. This will multiply CE’s detectable source range by ten, increasing the accessible volume of space thousandfold. However, UHV structures of this size and volume have never been attempted.

As a key member of the Cosmic Explorer Beamtube Experiment (CEBEX) team, the selectee will contribute to the modeling, trade study, design, fabrication, installation, bakeout and characterization of engineering prototypes and technology demonstrators for CE beamtubes up to 40 km in length. Tests will include industrial fabrication and qualification of a planned 1.2-meter diameter, 120-meter-long demonstration tube, to be erected in the new purpose-built CEBEX laboratory at the LIGO Hanford Observatory (LHO). In parallel, the chosen candidate will take a lead role in forging results of these investigations into a conceptual reference design, construction plan, and parametric cost estimate for CE. These will form the core of our future CE Observatory construction proposal.

This is a Campus Critical position. An employee designated as campus critical is expected to be aware of the campus emergency management plan and to report to Campus as soon as possible in the event of an emergency to assist in campus wide response and recovery efforts.

Essential Job Duties

  • Collaborate with research scientists and engineers in modeling and investigation of UHV techniques, welding and fabrication technology, structural statics and dynamics, thermal processing, surface preparation, residual gas characterization, material surface analysis, and related disciplines.
  • Establish, track, and maintain team workplans, schedules and budgets to accomplish mission objectives.
  • Supervise and mentor junior engineering and technical staff.
  • Plan and oversee specification and procurement of instruments and equipment, including budget development, scheduling, technical requirement definition, competitive vendor selection, contract monitoring, and quality assurance.
  • Responsible for professional communication (written and verbal) internally within the organization and externally to parties outside the organization. This includes liaising and interacting with US and international collaborators, contributors, and industrial partners.
  • Liaising, collaborating, and exchanging information with LIGO Laboratory vacuum teams concerning best practices, organization standards and methods.
  • Serve as a contributing member or chair on Design, Technical, Installation and other internal Review panels as may be required.
  • Initiate and collaborate in writing and delivering research papers and technical presentations.
  • Develop, oversee, and evaluate UHV material preparation and test facilities, including cleaning plants, bake ovens, and outgassing test chambers used to prepare or characterize UHV components and instrumentation.
  • Travel as requested to other LIGO campus and observatory sites, major vendor facilities, and collaborating institutions, both domestic and international.
  • Undertake additional leadership or contributing responsibilities as needs of the program may require.
  • Other duties as assigned.

Basic Qualifications

  • BS degree in Mechanical, Aerospace, Chemical or Systems Engineering, Physics, Material Science, or a related scientific or engineering field.
  • 8 or more years of direct vacuum engineering or research work experience in relevant industrial or scientific applications.
  • Demonstrated proficiency in practical design, analysis, and performance characterization of high- or ultra-high vacuum systems, including structural and safety analysis, pressure measurement, pump and valve selection, surface preparation, bakeout, and seal technology.
  • Thorough knowledge and experience in selection and application of UHV-compatible materials, material processes (welding, surface preparation, etc.)
  • Demonstrated proficiency in application and interpretation of spectra from residual gas analyzers.
  • Experience in application of helium mass‐spectrometer leak detection (MSLD) apparatus.
  • Effective English‐language written and verbal communication skills and habits.
  • Proven ability to mentor junior engineering and technical staff.
  • Level-headed professionalism and excellent interpersonal and team skills.
  • An automobile driver’s license valid in the United States, or ability to obtain one once employment begins.
  • Ability to lift at least 20 pounds.

Preferred Qualifications

  • Master’s or Doctoral graduate degree in Mechanical, Aerospace, Chemical or Systems Engineering, Physics, Material Science, or a related scientific or engineering field.
  • Certificate, coursework, or other professional qualification in Project Management.
  • Demonstrated expertise in application of industrial automation to large-scale vacuum systems.
  • Hands-on experience in building, improving, and maintaining high- or ultra- high vacuum systems.
  • Experience related to fluid, cryogen, pressure, flow rate, and gas sensors and instrumentation.
  • Computer-aided design (CAD) experience and demonstrated proficiency (SolidWorks™ preferred).
  • Finite-element analysis (FEA) experience and demonstrated proficiency (e.g., Ansys™, COMSOL™ or equivalent).
  • Gas dynamical modeling expertise (e.g., using MOLFLOW™ or equivalent Monte Carlo codes).

Required Documents

  • Cover Letter summarizing your relevant experience to this role and also your interest in LIGO Lab.
  • Resume.

Please find here full details.

Senior Vacuum Engineer at LHO

Caltech’s Laser Interferometer Gravitational-wave Observatory (LIGO) seeks a highly motivated and skilled Senior Vacuum Engineer to join its Cosmic Explorer Beamtube Experiment (CEBEX) team at the Richland, Washington observatory site.

LIGO Laboratory is a major National Science Foundation facility dedicated to observing the newly discovered gravitational-wave universe. Jointly operated by the California Institute of Technology and the Massachusetts Institute of Technology, LIGO operates the world’s leading gravitational observatories near Richland, WA and Baton Rouge, LA, as well as campus R&D centers in Pasadena, CA and Cambridge, MA.

This position is a fulltime in-person role located at LIGO Hanford in Richland, WA.

To learn more about LIGO Laboratory, please visit LIGO.caltech.edu. The Laboratory’s mission supports the young science of gravitational-wave physics and astronomy and includes observatory operations, analysis and dissemination of astrophysical observations, detector science and technology R&D, gravitational-wave astrophysics, and education and public outreach.

LIGO now also leads the effort to expand humanity’s gravitational wave horizon with a next-generation observatory, Cosmic Explorer (CE). Slated for construction in the 2030’s, CE will be ten times the size and reach of LIGO, able to gather signals from the edge of the observable universe.

The selected applicant will join an elite team charged with conceiving, designing, building, and testing advanced technology for the CE vacuum systems, destined to be the largest ultrahigh vacuum systems ever built. We will exercise and develop this technology in a new, purpose-built UHV research facility, the Cosmic Explorer Beamtube Experiment (CEBEX) Laboratory, located at LIGO Hanford.

Current Washington and Louisiana LIGO installations occupy 4 km scale, 10 million-liter UHV systems operating at one trillionth of atmospheric pressure (10-9 millibar), making them the two largest contiguous UHV volumes ever constructed. To further expand sensitivity, a new observatory will be constructed: Cosmic Explorer (CE). This observatory will require beamtubes 10x longer, up to 40 km in length. This will multiply CE’s detectable source range by ten, increasing the accessible volume of space thousandfold. However, UHV structures of this size and volume have never been attempted.

As a key member of the Cosmic Explorer Beamtube Experiment (CEBEX) team, the selectee will contribute to the modeling, trade study, design, fabrication, installation, bakeout and characterization of engineering prototypes and technology demonstrators for CE beamtubes up to 40 km in length. Tests will include industrial fabrication and qualification of a planned 1.2-meter diameter, 120-meter-long demonstration tube, to be erected in the new purpose-built CEBEX laboratory at the LIGO Hanford Observatory (LHO). In parallel, the chosen candidate will take a lead role in forging results of these investigations into a conceptual reference design, construction plan, and parametric cost estimate for CE. These will form the core of our future CE Observatory construction proposal.

This is a Campus Critical position. An employee designated as campus critical is expected to be aware of the campus emergency management plan and to report to Campus as soon as possible in the event of an emergency to assist in campus wide response and recovery efforts.

Essential Job Duties

  • Collaborate with research scientists and engineers in modeling and investigation of UHV techniques, welding and fabrication technology, structural statics and dynamics, thermal processing, surface preparation, residual gas characterization, material surface analysis, and related disciplines.
  • Establish, track, and maintain team workplans, schedules and budgets to accomplish mission objectives.
  • Supervise and mentor junior engineering and technical staff.
  • Plan and oversee specification and procurement of instruments and equipment, including budget development, scheduling, technical requirement definition, competitive vendor selection, contract monitoring, and quality assurance.
  • Responsible for professional communication (written and verbal) internally within the organization and externally to parties outside the organization. This includes liaising and interacting with US and international collaborators, contributors, and industrial partners.
  • Liaising, collaborating, and exchanging information with LIGO Laboratory vacuum teams concerning best practices, organization standards and methods.
  • Serve as a contributing member or chair on Design, Technical, Installation and other internal Review panels as may be required.
  • Initiate and collaborate in writing and delivering research papers and technical presentations.
  • Develop, oversee, and evaluate UHV material preparation and test facilities, including cleaning plants, bake ovens, and outgassing test chambers used to prepare or characterize UHV components and instrumentation.
  • Travel as requested to other LIGO campus and observatory sites, major vendor facilities, and collaborating institutions, both domestic and international.
  • Undertake additional leadership or contributing responsibilities as needs of the program may require.

Basic Qualifications

  • BS degree in Mechanical, Aerospace, Chemical or Systems Engineering, Physics, Material Science, or a related scientific or engineering field.
  • 8 or more years of direct vacuum engineering or research work experience in relevant industrial or scientific applications.
  • Demonstrated proficiency in practical design, analysis, and performance characterization of high- or ultra-high vacuum systems, including structural and safety analysis, pressure measurement, pump and valve selection, surface preparation, bakeout, and seal technology.
  • Thorough knowledge and experience in selection and application of UHV-compatible materials, material processes (welding, surface preparation, etc.)
  • Demonstrated proficiency in application and interpretation of spectra from residual gas analyzers.
  • Experience in application of helium mass‐spectrometer leak detection (MSLD) apparatus.
  • Effective English‐language written and verbal communication skills and habits.
  • Proven ability to mentor junior engineering and technical staff.
  • Level-headed professionalism and excellent interpersonal and team skills.
  • An automobile driver’s license valid in the United States.
  • Ability to lift at least 20 pounds.

Preferred Qualifications

  • Master’s or Doctoral graduate degree in Mechanical, Aerospace, Chemical or Systems Engineering, Physics, Material Science, or a related scientific or engineering field.
  • Certificate, coursework, or other professional qualification in Project Management.
  • Demonstrated expertise in application of industrial automation to large-scale vacuum systems.
  • Hands-on experience in building, improving, and maintaining high- or ultra- high vacuum systems.
  • Experience related to fluid, cryogen, pressure, flow rate, and gas sensors and instrumentation.
  • Computer-aided design (CAD) experience and demonstrated proficiency (SolidWorks™ preferred).
  • Finite-element analysis (FEA) experience and demonstrated proficiency (e.g., Ansys™, COMSOL™ or equivalent).
  • Gas dynamical modeling expertise (e.g., using MOLFLOW™ or equivalent Monte Carlo codes).

Required Documents

  • Cover Letter summarizing your relevant experience to this role and also your interest in LIGO Lab.
  • Resume.

Pease find here full details.

Three ET positions at RWTH Aachen

The successful candidates will be employed under a regular employment contract. The positions are to be filled at the earliest possible date and offered for a fixed term of two years. If the Einstein Telescope in the NL-B-D border region is approved, RWTH will attempt to continue the contract. The fixed-term employment is possible as it constitutes one of the fixed-term options of the Wissenschaftszeitvertragsgesetz (German Act on Fixed-term Scientific Contracts). This is a full-time position. The salary is based on the German public service salary scale (TV-L). The position corresponds to a pay grade of EG 13 TV-L. Application time: 18.07.2024

Please find here full details: