About Atos GroupAtos Group is a global leader in digital transformation with c. 56,000 employees and annual revenue of c. €7.2 billion (at the go-forward perimeter), operating in 54 countries under two brands - Atos for services and Eviden for products and systems. European number one in cybersecurity and a leader in cloud, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is the brand under which Atos SE (Societas Europaea) operates. Atos SE listed on Euronext Paris.The purpose of Atos Group is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.Telecommunications Architect – 5G / FRMCSAbout The RoleWe are looking for an experienced Telecommunications Architect to support a strategic programme for a major railway client. The project focuses on 5G Core implementation and the transformation from GSM-R to FRMCS — a mission-critical initiative shaping the future of railway communications.Location Warsaw, Poznań, Wrocław, or GdańskWork model Hybrid – alternating schedule (1 week on-site at client premises / 1 week remote)Cooperation model B2B contractWhat You'll Be DoingDesign implementation and integration concepts for Core 5G and MCX (with IWF)Analyse requirements and define architecture for future FRMCS systemsPrepare technical specifications and tender documentation (OPZ) for 5G, MCX, and GSM-R/FDS integrationEvaluate available 5G market solutions and platformsDevelop a migration strategy from GSM-R to FRMCSLead technical consultations with manufacturers and solution vendorsSupport market consultation processes and target technology selectionWhat We're Looking For3+ years in Core Network and/or MCX2+ years creating technical and analytical documentationHands-on experience in gathering and analysing business and technical requirementsExperience developing tender documentation / Terms of Reference (OPZ)Technical KnowledgeStrong knowledge of 5G Core architecture and solutionsPractical knowledge of MCX systems and IWFFamiliarity with 5G solution architecture and configurationUnderstanding of LTE and 5G network fundamentalsKnowledge of 5G market products and platformsKnowledge of current GSM-R and FRMCS specificationsAbility to design integration between Core 5G, MCX, GSM-R, and FRMCS environmentsLanguagesPolish – C2 / native (required)English – minimum B1 (documentation reading and vendor collaboration)Nice to HaveKnowledge of currently operating GSM-R and FDS system architectureExperience in operator / telecommunications projectsBackground in designing complex, mission-critical telecommunications systemsExperience collaborating with telecommunications solution manufacturersHere at Atos, diversity and inclusion are embedded in our DNA. Read more about our commitment to a fair work environment for all.Atos is a recognized leader in its industry across Environment, Social and Governance (ESG) criteria. Find out more on our CSR commitment.Choose your future. Choose Atos.

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Telecommunications Architect - 5G / FRMCS