SBAS System Performance Engineer for ASECNA EGNOS project (in Toulouse)

Job Req ID:  15106
Closing Date:  27 September 2022
Establishment:  ESTEC, Noordwijk, Netherlands
Directorate:  Directorate of Navigation
Publication:  Internal & External
Vacancy Type:  Fixed-Term
Date Posted:  30 August 2022

Vacancy in the Directorate of Navigation.


ESA is an equal opportunity employer, committed to achieving diversity within the workforce and creating an inclusive working environment. We therefore welcome applications from all qualified candidates irrespective of gender, sexual orientation, ethnicity, beliefs, age, disability or other characteristics. Applications from women are encouraged.


This is a non-renewable post for a limited duration of four years and is classified A2-A4 on the Coordinated Organisations’ salary scale.



ESTEC, Noordwijk, Netherlands
With a resident assignment to Toulouse (France)


SBAS System Performance Engineer for the ASECNA EGNOS project in the System Engineering Section, EGNOS and SBAS Division, Strategy and Programme Department, Directorate of Navigation.


As SBAS System Performance Engineer for the ASECNA EGNOS project, you will be deployed in the System Engineering Section and will report functionally to the ASECNA EGNOS Project Lead. You will be primarily responsible for the SBAS performance management related industrial work packages for the ASECNA EGNOS project and will contribute to all development phases (notably phases C and D). This is an activity performed by ESA to provide support to a third-party international agency, ASECNA, in line with an international agreement signed by ASECNA and ESA in 2022.



  • supporting the ASECNA-SBAS procurement process and following up the performance related aspects of industrial activities, including:
  • ensuring the consistency of EGNOS system performance requirements specification (integrity, continuity, accuracy, availability), compliance and qualification across the division, especially with the Mission, PA/Safety/Security and Development team;
  • specifying performance related system requirements;
  • assessing requirement flow-down traceability, design description and justification;
  • conducting performance commitment definition and verification for both fault-free and faulty system budgets;
  • assessing the industrial requirement validation and verification approach definition and justification for both fault-free and faulty budgets (integrity, continuity and LPV200 Accuracy Tail, including critical assessment of the associated test definition (e.g. methodology, configuration, pass/fail criteria, etc.), implementation and results;
  • managing the system fault-free and faulty performance budgets in combination with underlying system modelling capabilities to assess the required statistical evidence;
  • defining, analysing and validating the system technical external interfaces related to performance qualification (e.g. raw data synthetic scenarios, real data, SIS threat events definition);
  • assessing the resulting statements of compliance and deviations of system and mission level requirements documents (SRD and MRD) and applicable technical standards;


•  performing SBAS system performance analysis and end-to-end simulations and trade-off scenarios to support the validation and follow-up of industrial performance packages;
•  supporting the various EGNOS and ASECNA-SBAS major reviews (e.g. CDR and QR) and project change control boards (Technical CCB, Project CCB, etc.);
•  supporting the Division’s GNSS Augmentation System Performance and Algorithm Laboratory (GASPAL) to foster internal technical capabilities with regard to: 


  • GNSS signal processing and augmentation algorithm techniques 
  • SW simulation modelling
  • Multi-mission standards cross-acceptance
  • Definition of new software platform and tools for supporting the future needs of the Division;


•  supporting the management and follow-up of the Division’s R&D projects, including EGNOS evolutions (EGNOS NEXT), NAVISP and Horizon Europe;
•  preparing reports for internal and external entities such as ESA management, EUSPA, the EC, the SBAS Interoperability Working Group, ANSP Working Group;
•  contributing to dissemination of the results of activities performed and knowledge transfer across and outside the Agency.

Technical competencies

Knowledge on large scale complex ground and space system architecture including performance, design, interfaces and protocols
Knowledge of the main tools usable for GNSS performance engineering
Systems engineering of software systems

Behavioural competencies

Result Orientation
Operational Efficiency
Fostering Cooperation
Relationship Management
Continuous Improvement
Forward Thinking


A master’s degree in telecommunications or electronic engineering is required for this post.

Additional requirements

  • A solid background in satellite navigation systems, notably in navigation ground systems architecture is required, together with several years’ working experience in those fields.
  • Experience in the procurement of industrial activities, in safety critical software and real-time software development and verification is a distinct advantage.
  • Experience in mission and system requirements analysis, system design and performance engineering, and in procurement preparation and implementation (preparation of technical requirements and Statements of Work, negotiation with industry, technical follow-up of implementation, and acceptance and qualification reviews, etc.) is required.
  • You should have good interpersonal and communication skills.  You should be able to work autonomously, effectively and cooperatively in a diverse, international team environment and to define and implement solutions in line with team and individual objectives and project deadlines.
  • You should also have good analytical, organisational and reporting skills, a proactive attitude to solving problems and an interest in innovative technologies.
  • You are willing to travel and thrive in a demanding international environment.
  • You must be eligible for security clearance from your national security administration

Other information

For behavioural competencies expected from ESA staff in general, please refer to the ESA Competency Framework.

 For further information please visit: Professionals, What we offer and FAQ   

The working languages of the Agency are English and French. A good knowledge of one of these is required. Knowledge of another Member State language would be an asset.     

The Agency may require applicants to undergo selection tests.


At the Agency we value diversity and we welcome people with disabilities. Whenever possible, we seek to accommodate individuals with disabilities by providing the necessary support at the workplace. The Human Resources Department can also provide assistance during the recruitment process. If you would like to discuss this further please contact us at


Please note that applications are only considered from nationals of one of the following States: Austria, Belgium, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Luxembourg, the Netherlands, Norway, Poland, Portugal, Romania, Spain, Sweden, Switzerland, the United Kingdom and Canada, Latvia, Lithuania and Slovenia.


According to the ESA Convention, the recruitment of staff must take into account an adequate distribution of posts among nationals of the ESA Member States*. When short-listing for an interview, priority will first be given to internal candidates and secondly to external candidates from under-represented or balanced Member States*.  (


In accordance with the European Space Agency’s security procedures and as part of the selection process, successful candidates will be required to undergo basic screening before appointment conducted by an external background screening service. 


Recruitment will normally be at the first grade in the band (A2); however, if the candidate selected has little or no experience, the position may be filled at A1 level.

*Member States, Associate Members or Cooperating States. ​