ERA/SNE/2025/001: Permanent call for expression of interest for the mandate of Seconded National Experts (SNEs) in the MARS Unit - European Union Agency for Railways (Valenciennes)

About this position

The summary below is published by European Union Agency for Railways on the official vacancy notice. Our own analysis — salary realism, comparable openings, career trajectory, language profile — follows further down the page.

Are you eligible?

Check these requirements from the notice before investing time in an application:

• Eligibility: Nationals of EU Member States or countries associated with the EU railway system

Position overview

This is the official EU Careers listing for ERA/SNE/2025/001: Permanent call for expression of interest for the mandate of Seconded National Experts (SNEs) in the MARS Unit at ERA based in Valenciennes (Seconded National Expert).

* THE AGENCY

* * [Vision, Mission, Values & Tasks](https://www.era.europa.eu/agency-you/agency/vision-mission-values-tasks) * [Executive Director](https://www.era.europa.eu/agency-you/agency/executive-director_en) * [Organisation](https://www.era.europa.eu/agency-you/agency/organisation_en)

* * [Management Board Members](https://www.era.europa.eu/agency/management-executive-boards/era-management-board-members) * [Management Board Decisions](https://www.era.europa.eu/agency-you/management-board/management-board-decisions_en) * [Executive Board Members](https://www.era.europa.eu/agency/management-executive-boards/era-executive-board-members)

* * [European Commission](https://www.era.europa.eu/agency-you/stakeholders/european-commission_en) * [National Safety Authorities (NSAs)](https://www.era.europa.eu/agency-you/stakeholders/networks/national-safety-authorities_en) * [National Investigation Bodies (NIBs)](https://www.era.europa.eu/agency/stakeholder-relations/national-investigation-bodies/nib-network-european-network-rail-accidents-national-investigation-bodies_en) * [Network of Representative Bodies (NRBs)](https://www.era.europa.eu/agency-you/stakeholders/networks/network-representative-bodies_en) * [Cooperation with NB-Rail](https://www.era.europa.eu/stakeholders/networks/cooperation-nb-rail_en) * [Outside EU](https://www.era.europa.eu/agency-you/stakeholders/outside-eu)

* * [Working at ERA](https://www.era.europa.eu/agency-you/recruitment/working-at-era) * [Vacancies / Calls for applications](https://www.era.europa.eu/agency-you/recruitment/vacancies) * [Application Procedure](https://www.era.europa.eu/agency-you/recruitment/application-procedure) * [Selection Procedure](https://www.era.europa.eu/agency-you/recruitment/selection-procedure) * [Appeal & Complaint Procedures](https://www.era.europa.eu/agency-you/recruitment/appeal-and-complaint-procedures)

* * [Annual Lists of Contractors](https://www.era.europa.eu/agency/procurement/annual-lists-contractors)

* [Board of Appeal](https://www.era.europa.eu/agency-you/board-appeal_en) * [Chargeable Services](https://www.era.europa.eu/agency-you/procurement/chargeable-services_en) * [Vision for the Target Rail System](https://www.era.europa.eu/agency-you/vision-target-rail-system_en) * [Privacy Notices](https://www.era.europa.eu/agency/privacy-notices)

* DOMAINS

* * [Applications for Single Safety Certificates (SSCs)](https://www.era.europa.eu/domains/applicants/applications-single-safety-certificates_en) * [Applications for Vehicle (type) Authorisations (VAs)](https://www.era.europa.eu/domains/applicants/applications-vehicle-type-authorisations_en) * [Applications for ERTMS Trackside Approval (TAs)](https://www.era.europa.eu/domains/applicants/applications-ertms-trackside-approval_en) * [Fixed Installation National Authorisation Guidance](https://www.era.europa.eu/domains/applicants/fixed-installation-national-authorisation-guidance_en) * [Fees & Charges 2026](https://www.era.europa.eu/domains/applicants/2026-fees-and-charges-payable-agency-and-their-conditions-payment) * [One-Stop Shop (OSS)](https://oss.era.europa.eu/logon.jsp)

* * [ERA Knowledge Graph](https://www.era.europa.eu/domains/registers/era-knowlege-graph_en) * [ERADIS](https://www.era.europa.eu/domains/registers/eradis_en) * [ERAIL](https://www.era.europa.eu/domains/registers/erail_en) * [ERATV](https://www.era.europa.eu/domains/registers/eratv_en) * [ERSAD](https://www.era.europa.eu/domains/registers/ersad_en) * [SRD](https://www.era.europa.eu/domains/registers/srd_en) * [RDD](https://www.era.europa.eu/domains/registers/rdd_en) * [VKM](https://www.era.europa.eu/domains/registers/vkm_en) * [RINF](https://www.era.europa.eu/domains/registers/rinf_en) * [ECVVR](https://www.era.europa.eu/domains/registers/ecvvr_en) * [EVR](https://www.era.europa.eu/domains/registers/evr_en) * [CCM](https://www.era.europa.eu/domains/registers/ccm_en) * [OCR](https://www.era.europa.eu/domains/registers/ocr_en) * [SAIT](https://www.era.europa.eu/content/what-safety-alerts-it-tool-sait)

* * [Control Command and Signalling TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/control-command-and-signalling-tsi_en) * [Energy TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/energy-tsi_en) * [Freight Wagons TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/rolling-stock-freight-wagons-tsi_en) * [Infrastructure TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/infrastructure-tsi_en) * [Locomotives and Passengers TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/rolling-stock-locomotives-and-passengers-tsi_en) * [Noise TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/noise-tsi_en) * [Operation and Traffic Management TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/operation-and-traffic-management-tsi_en) * [Persons with Disabilities and with Reduced Mobility TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/persons-disabilities-and-reduced-mobility-tsi_en) * [Safety in Railway Tunnels TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability/safety-railway-tunnels-tsi_en) * [Telematics Applications TSI](https://www.era.europa.eu/domains/technical-specifications-interoperability-tsis/telematics-applications-tsi)

* * [Radio Communication](https://www.era.europa.eu/domains/infrastructure/european-rail-traffic-management-system-ertms/radio-communication_en) * [Error Corrections of Current ETCS & GSM-R Baselines](https://www.era.europa.eu/domains/european-rail-traffic-management-system-ertms/error-corrections-current-etcs-gsm-r) * [Backwards & Forwards Compatibility of ETCS Baselines](https://www.era.europa.eu/domains/european-rail-traffic-management-system-ertms/backwards-forwards-compatibility-etcs) * [Change Control Management](https://www.era.europa.eu/content/change-control-management) * [ETCS Variables](https://www.era.europa.eu/domains/european-rail-traffic-management-system-ertms/etcs-variables) * [Generic ETCS Driver’s Handbook](https://www.era.europa.eu/domains/european-rail-traffic-management-system-ertms/generic-etcs-drivers-handbook) * [ERTMS national technical rules](https://www.era.europa.eu/content/ertms-national-technical-rules) * [Certification issues](https://www.era.europa.eu/content/certification-issues) * [Braking curves](https://www.era.europa.eu/domains/european-rail-traffic-management-system/braking-curves) * [ETCS & Radio System Compatibility (ESC/RSC)](https://www.era.europa.eu/domains/european-rail-traffic-management-system-ertms/etcs-radio-system-compatibility-escrsc)

* * [Safety Culture](https://www.era.europa.eu/domains/safety-management/safety-culture_en) * [Safety Leadership](https://www.era.europa.eu/domains/safety-management/safety-culture/safety-leadership) * [Human & Organisational Factors](https://www.era.europa.eu/domains/safety-management/human-and-organisational-factors-hof_en) * [Common Safety Methods (CSMs)](https://www.era.europa.eu/domains/safety-management/common-safety-methods_en) * [Safety Management System (SMS)](https://www.era.europa.eu/domains/safety-management/safety-management-system-sms_en) * [Group of Analysts](https://www.era.europa.eu/content/group-analysts-goa) * [Information Sharing System](https://www.era.europa.eu/domains/safety-management/information-sharing-system-iss)

* * [Common Safety Indicators (CSIs)](https://www.era.europa.eu/domains/accident-incident/common-safety-indicators-csis) * [Investigating SMS](https://www.era.europa.eu/domains/safety-management/safety-culture/investigating-sms) * [NIB Network](https://www.era.europa.eu/agency/stakeholder-relations/national-investigation-bodies/nib-network-european-network-rail-accidents-national-investigation-bodies_en) * [Rail Accident Investigation](https://www.era.europa.eu/domains/accident-incident/rail-accident-investigation_en)

* * [Risk Management Framework](https://www.era.europa.eu/domains/operation/transport-dangerous-goods/risk-management-framework_en)

* [Rail & Environment](https://www.era.europa.eu/domains/rail-environment) * [Cybersecurity in Railways](https://www.era.europa.eu/domains/cybersecurity-railways) * [ERA Academy](https://www.era.europa.eu/domains/era-academy) * [Route Compatibility Check (RCC)](https://www.era.europa.eu/domains/trains/route-compatibility-check-rcc_en) * [Certification of Entities in Charge of Maintenance](https://www.era.europa.eu/domains/trains/certification-entities-charge-maintenance_en) * [Train Drivers](https://www.era.europa.eu/domains/operation/train-drivers_en) * [Economic Analysis](https://www.era.europa.eu/domains/economic-analysis) * [Monitoring & Research](https://www.era.europa.eu/domains/monitoring-research) * [Conformity Assessment](https://www.era.europa.eu/domains/conformity-assessment_en) * [National Rules](https://www.era.europa.eu/activities/national-rules_en) * [Joint Network Secretariat (JNS)](https://www.era.europa.eu/domains/ac

Application timeline

This vacancy was first listed on 28 May 2026, 59 days ago.

No closing date is published in the source feed for this position. EU vacancies typically remain open for four to eight weeks; check the official vacancy notice for the cut-off date and time.

Last verified against the EU Careers feed on 24 July 2026 (2 days ago).

Where to learn more

For headcount, mission, and other open vacancies at ERA see the ERA institution page; for the cost of living, correction coefficient, and other postings in Valenciennes see our Valenciennes location page.

New to EU careers? Our beginner's guide walks through entry routes, EPSO competitions, and what to prepare. For application logistics see application tips and EPSO competitions.