Scientific Software Engineer – Time Metrology


The BIPM seeks to recruit a Software Engineer with knowledge in scientific algorithms, software development, and data analysis to support the generation and publication of the timing products within the Time Department.

  • Scientific Software Engineer
  • Starting date envisaged on 1st May 2024
  • Full-time 5 year fixed-term contract (with possibility of tenure)
  • Position based at the BIPM headquarters, Sèvres, (Paris suburb – France)
  • Applications to be sent by 29 February 2024 (23h59 Paris time)


The Time Department computes and disseminates the international reference time scale Coordinated Universal Time (UTC) and provides traceability to the SI to local realizations of UTC maintained in national institutes. For this work, the Time Department collaborates with about 80 Time laboratories worldwide, develops algorithms and specific software for the analysis of atomic clock and time transfer data, and has a laboratory equipped for the characterization of GNSS time transfer equipment.

Principal duties and responsibilities

Under the supervision of the Time Department Director, the postholder will:

  • Take part in the routine data processing for the generation, validation, and dissemination of UTC and rapid UTC and associated services of the Department, according to an agreed weekly and monthly schedule.
  • Proactively support the maintenance, progress, and improvement of the software used for the calculation of UTC and rapid UTC, including its validation, documentation, and version control.
  • Participate in the development of algorithms, software, and data analysis for the best use in UTC of different types of atomic clocks, primary frequency standards, and different time transfer based on GNSS, other satellite systems, or optical fibre network, with the aim of improving the stability and accuracy of UTC.
  • Contribute to the maintenance and improvement of the information on the BIPM ftp server, website, and databases.
  • Initiate exchanges with and respond to national laboratories including support for their data contribution to UTC and rapid UTC. Maintain mailing lists, exchange email, and distribute documents as required.

Required qualifications


  • Master’s degree/Engineer diploma or equivalent qualification in technical fields related to science, engineering, or mathematics (diploma obtained at least at the time of the starting date).

Work experience

  • Work experience particularly in data analysis related to metrology and geodesy; the application of mathematical methods, and scientific software development will be considered as an asset

Skills and competencies

  • Technical skills in computing algorithms and software languages as Fortran, Perl, Unix shell script, MySQL, Python, and Matlab.
  • Good oral and written communication skills in English and in French.
  • Sense of commitment, rigor, precision, transparency, and a proactive approach on attaining objectives.
  • Ability to carefully validate results and analyse input/output data with great attention to detail.
  • Flexibility, reliability, autonomy, honesty, willingness to work as part of a team, and collaborative ability.
  • Ability to work in a multicultural environment and to maintain effective working relationships inside and outside the organization.

Terms of Employment & Benefits

  • Full-time 5-year fixed-term appointment, with possibility of tenure.
  • Initial probationary period of 6 months, renewable once.
  • Competitive gross annual salary starting at 45 995€, depending on qualifications and experience, plus allowances subject to eligibility, including for an expatriate.
  • Exemption from income tax in France (but considered for the calculation of the effective rate depending on the situation of the person).
  • Minimum of 30 days paid holiday per year.
  • Contributory pension scheme and private health insurance which can be extended to dependants.

More information on the Benefits & General Conditions of Employment at the BIPM


The BIPM encourages applications from qualified candidates regardless of gender.

A full curriculum vitae (CV) and a covering letter (in French or in English) should be sent by 29 February 2024 (23h59 Paris time).


Applications should include the names of two referees who can comment on the applicant's suitability for the post (who will only be contacted with the prior permission of the candidate). Incomplete applications may not be considered.

Only shortlisted candidates will be contacted. They may be invited to take part in a distance written test and/or in a remote interview as part of the selection process. Thereafter, successful candidates will be invited to a face-to-face interview. The selection process may be modified.

The BIPM retains the discretion not to make any appointment to this vacancy, to make an appointment at a different grade, to make an appointment with a modified job description, or to offer a contract term for a shorter duration than the one indicated in this vacancy announcement.

A roster of suitable candidates may be established for this post as a result of this selection process.


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