5G Core & FRMCS Architect - FRMCS Migration Lead

Atos; Warszawa; Hybrid; PLN 180,000 - 240,000; Full time

Job summary

Atos is seeking an experienced Telecommunications Architect to support a strategic railway programme in Poland. The role focuses on 5G Core implementation and the migration from GSM-R to FRMCS, with a hybrid work model across multiple Polish cities.

You will design integration concepts for Core 5G and MCX, analyse requirements, and prepare technical specifications and tender documents for bid processes. Strong English and Polish communication skills are required.

Qualifications

• 3+ years in Core Network and/or MCX.
• 2+ years creating technical and analytical documentation.
• Hands-on experience gathering and analysing requirements.
• Experience developing tender documentation / OPZ.

Responsibilities

• Design implementation and integration concepts for Core 5G and MCX (with IWF)
• Analyse requirements and define architecture for FRMCS systems
• Prepare technical specifications and tender documentation (OPZ) for 5G, MCX, and GSM-R/FDS integration
• Evaluate available 5G market solutions and platforms
• Develop a migration strategy from GSM-R to FRMCS
• Lead technical consultations with manufacturers and solution vendors
• Support market consultation processes and target technology selection

Skills

Core Network

MCX

Requirements analysis

Tender documents

Stakeholder coordination

Job description

Atos is seeking an experienced Telecommunications Architect to support a strategic railway programme in Poland. The role focuses on 5G Core implementation and the migration from GSM-R to FRMCS, with a hybrid work model across multiple Polish cities.

You will design integration concepts for Core 5G and MCX, analyse requirements, and prepare technical specifications and tender documents for bid processes. Strong English and Polish communication skills are required.