E2E Architect - MVNO CNaaS

About the role

Orange Business is looking for an experienced End‑to‑End (E2E) Architect to lead the design and delivery of its MVNO CNaaS program. You will be responsible for creating robust, secure and scalable solutions that enable Mobile Network Operators (MNOs) and Mobile Virtual Network Operators (MVNOs) to offer data, voice, SMS and roaming services to retail, enterprise and wholesale customers.

Key responsibilities

• Design high‑level (HLD) and low‑level (LLD) technical solutions covering mobile core, 4G/5G radio, IP/IPX, Telco Cloud, firewalls and HSM.
• Develop proof‑of‑concepts (PoCs) in lab and pre‑production environments and demonstrate end‑to‑end integration.
• Define and execute comprehensive E2E test scenarios, analysing logs, traces and alarms to validate performance, security and resiliency.
• Prepare detailed hand‑over documentation and support delivery teams during customer project rollout.
• Organise technical workshops, demonstrations and stakeholder presentations to ensure alignment and gather feedback.

Required profile

• Proven experience designing and implementing end‑to‑end telecom architectures.
• Strong knowledge of mobile core networks, 4G/5G, VoLTE/VoNR, SMS and roaming services.
• Familiarity with regulatory and security requirements, SLAs and network availability targets.

Required skills

• Mobile Core Network
• 4G / 5G
• VoLTE / VoNR
• SMS & Roaming
• IP / IPX
• Telco Cloud
• Firewalls
• Hardware Security Module (HSM)
• High‑Level Design (HLD)
• Low‑Level Design (LLD)
• Proof of Concept (PoC) execution
• E2E testing and validation