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Hydro-Acoustic Officer (P-4)

Vienna (Austria)

  • Organization: CTBTO - Comprehensive Nuclear Test Ban Treaty
  • Location: Vienna (Austria)
  • Grade: P-4, International Professional - Internationally recruited position - Mid level
  • Occupational Groups:
    • Engineering
    • Information Technology and Computer Science
    • Meteorology, Geology and Geography
  • Closing Date:

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VA ID:  1143
Grade Level:  P-4
Division:  International Data Centre Division
Section:  Software Applications Section
Unit:  Scientific Methods Unit
Type of Appointment:  Fixed Term Appointment
Date of Issuance:  09/08/2021
Deadline for Applications:
Vacancy Reference: VA84-1143-2021
Reporting Date:  As soon as possible

Please note that all candidates should adhere to CTBTO Values of Integrity, Professionalism and Respect for Diversity.

Qualified female applicants and persons with disabilities are encouraged to apply.

 A roster of suitable candidates may be established for similar positions at the same level as a result of this selection process for a period of two (2) years.

Organizational Background

The Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization with its headquarters in Vienna is the international organization setting up the global verification system foreseen under the Comprehensive Nuclear-Test-Ban Treaty (CTBT), which is the treaty banning any nuclear-weapon-test explosion or any other nuclear explosion. The Treaty provides for a global verification regime, including a network of 337 stations worldwide, a communications system, an international data centre and on-site inspections to monitor compliance.

Organizational Setting

This position is located in the Scientific Methods Unit, Software Applications Section, International Data Centre (IDC) Division. 

Reporting Lines

Under the supervision of the Head, Scientific Methods Unit, to: 

Duties and Responsibilties

  1. Conduct projects to improve and evaluate the performance of seismo-acoustic and/or hydroacoustic data processing and data fusion algorithms and systems;
  2. Develop, optimize and calibrate signal detection, signal association, event location and event characterization algorithms;
  3. Perform research and lead development in areas including signal detection, phase association, signal propagation, receiver effects, event location and source mechanisms;
  4. Define requirements and supervise the development of new software;
  5. Plan, manage and evaluate work done by external contractors in the area of seismo-acoustic and/or hydroacoustic research and development;
  6. Perform other duties as assigned.


  • Advanced university degree (Master’s degree or equivalent) in seismo-acoustics and/or hydroacoustic, geophysics, seismology, acoustics or a related field.

Work Experience and Qualifications

  • At least seven (7) years relevant working experience with geophysical methods and data processing techniques; experience in the use of UNIX/LINUX operating systems and with large databases, in particular Oracle/SQL databases, knowledge of data analysis and display software; experience in quantitative research using computers and processing large volumes of data; knowledge of seismo-acoustic and/or hydroacoustic data processing is an advantage;
  • Knowledge of theoretical seismo-acoustic and/or hydroacoustic issues related to monitoring events in diverse environments;
  • Ability to improve the performance of widely dispersed seismo-acoustic and/or hydroacoustic monitoring stations for event detection, location and identification;
  • Knowledge of computational seismo-acoustics and/or hydroacoustic, linear and non-linear acoustics;
  • Knowledge of signal processing related to seismo-acoustics and/or hydroacoustic signal detection;
  • Ability to use knowledge of theory for the design, development and implementation of research to improve operational seismo-acoustic and/or hydroacoustic monitoring;
  • Knowledge of computer simulation modeling techniques to improve seismo-acoustic and/or hydroacoustic data analysis methods;


  • Excellent written and oral communication skills in English are essential;
  • Knowledge of other official CTBTO languages is desirable.


Professionalism - Shows pride in work and in achievements; demonstrates professional competence and mastery of subject matter; is conscientious and efficient in meeting commitments, observing deadlines and achieving results; is motivated by professional rather than personal concerns; shows persistence when faced with difficult problems or challenges; remains calm in stressful situations.
Communication- Speaks and writes clearly and effectively; listens to others, correctly interprets messages from others and responds appropriately; asks questions to clarify, and exhibits interest in having two-way communication; tailors language, tone, style and format to match the audience; demonstrates openness in sharing information and keeping people informed. 
Planning and organizing - Develops clear goals that are consistent with agreed strategies; identifies priority activities and assignments; allocates appropriate amount of time and resources for completing work; foresees risks and allows for contingencies when planning; monitors and adjusts plans and actions as necessary; uses time efficiently
Team work - Works collaboratively with colleagues to achieve organisational goals; solicits input by genuinely valuing others' ideas and expertise; is willing to learn from others; places team agenda before personal agenda; builds consensus for task purpose and direction with team members; supports and acts in accordance with final group decisions, even when such decisions may not entirely reflect own position; shares credit for team accomplishments and accepts joint responsibility for team shortcomings.
Accountability - Takes ownership of all responsibilities and honors commitments; delivers outputs for which one has responsibility within prescribed time, cost and quality standards; operates in compliance with organizational regulations and rules; supports subordinates, provides oversight and takes responsibility for delegated assignments; takes personal responsibility for his/her own shortcomings and those of the work unit, where applicable.
Creativity - Actively seeks to improve programmes or services; offers new and different options to solve problems or meet client needs; promotes and persuades others to consider new ideas; takes calculated risks on new and unusual ideas; thinks “outside the box”; takes an interest in new ideas and new ways of doing things; is not bound by current thinking or traditional approaches.
Client orientation – Considers all those to whom services are provided to be “clients” and seeks to see things from clients’ point of view; establishes and maintains productive relationships with clients by gaining their trust and respect.; identifies clients’ needs and matches them to appropriate solutions; monitors ongoing developments inside and outside the clients’ environment to keep informed and anticipate problems; keeps clients informed of progress and setbacks in projects; meets timeline for delivery of products or services to clients.
Commitment to continuous learning - Keeps abreast of new developments in own occupation/profession; actively seeks to develop oneself professionally and personally; contributes to the learning of colleagues and subordinates; shows willingness to learn from others; seeks feedback to learn and improve.
Technological Awareness - Keeps abreast of available technology; understands applicability and limitations of technology to the work of the office; actively seeks to apply technology to appropriate tasks, shows willingness to learn new technology.


CTBTO offers an attractive compensation and benefits package in accordance with the policies of the International Civil Service Commission. For more information on UN salaries, allowances and benefits, see link: The salary offered may be subject to deductions to the United Nations Joint Staff Pension Fund and Health Insurance Scheme.

Additional Information:

  • All applications must be submitted through the CTBTO e-Recruitment system before the deadline stated in the vacancy announcement.
  • Incomplete applications and submission of employment history in formats other than the CTBTO Employment Information Form will not be considered.
  • The CTBTO Preparatory Commission retains the discretion not to make any appointment to this vacancy; to make an appointment at a lower grade in particular if the candidate has less than the qualifications required; to make an appointment with a modified job description, or to offer a contract term for a shorter duration than indicated in the vacancy announcement.
  • Please note that the CTBTO will only consider academic credentials or degrees obtained from an educational institution recognized in the IAU/UNESCO list.
  • The CTBTO reserves the right to undertake correspondence only with shortlisted candidates.
  • Candidates under serious consideration for selection will be subject to a reference-checking process or be requested to provide performance assessments.
We do our best to provide you the most accurate info, but closing dates may be wrong on our site. Please check on the recruiting organization's page for the exact info. Candidates are responsible for complying with deadlines and are encouraged to submit applications well ahead.
Before applying, please make sure that you have read the requirements for the position and that you qualify.
Applications from non-qualifying applicants will most likely be discarded by the recruiting manager.

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