IRIS2 End-to-End Functional Architect

Eutelsat; Issy-les-Moulineaux; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid work options

Diversity & Inclusion

Job summary

Eutelsat is seeking an experienced End-to-End Functional Architect to define and coordinate the functional architecture of complex satellite communication systems and services.

You will translate service needs and use cases into coherent architectures, allocate functions across space, ground, and network domains, and collaborate with internal teams, suppliers, and partners to maintain architectural consistency throughout the lifecycle.

Qualifications

• 5–10 years of relevant experience in end-to-end functional architecture.
• Master’s degree or PhD in telecommunications, electrical engineering, computer science, or related field.
• Experience decomposing and allocating functions across multiple system elements or engineering domains.
• Strong understanding of telecommunications system architecture and functions interactions.
• Excellent written and verbal communication skills in English.
• Experience with satellite communication systems, non-terrestrial networks or LEO/MEO/GEO satellite constellations.

Responsibilities

• Define and maintain the end-to-end functional architecture for assigned services, capabilities and operational use cases.
• Develop end-to-end functional chains describing how services are orchestrated, established, delivered, maintained, monitored and terminated across the system.
• Identify the system functions required to support each service and define their relationships, dependencies, states and interactions.
• Allocate functions across the relevant user, service, 5G, network, space, ground and operations domains.
• Define the functional boundaries between system elements and ensure responsibilities are clearly allocated without gaps or duplication.
• Define end-to-end functional behaviour for nominal operation, degraded modes, failure conditions and recovery scenarios.
• Define the information exchanged between functions and establish interface requirements.
• Coordinate architecture and maintain the baseline for assigned scope.
• Resolve cross-domain architecture issues spanning subsystems, suppliers and teams.
• Assess changes for consistency with end-to-end functional architecture.
• Lead or contribute to architecture trade studies and governance reviews.
• Provide guidance on interpretation of the functional architecture to engineers and partners.
• Ensure traceability between services, use cases, functions, requirements and interfaces.
• Work with verification teams to define end-to-end verification scenarios.

Skills

End-to-end architecture

Satellite communications

5G architecture

Stakeholder collaboration

Technical leadership

Education

Master's/PhD in telecoms / EE / CS

Job description

Be part of a new era in communications, transforming connectivity with Eutelsat – the world’s first GEO-LEO integrated global satellite operator.

As a leader in satellite communications, we provide global connectivity solutions - connecting businesses, communities, and governments around the world. We can connect you at on land, at sea and in the air. We also deliver broadcast television channels and packages, transmitting vital news reports around the world.

With Eutelsat You’ll Get To:

• Pioneer the future of Space Technology
• Bring connectivity to remote frontiers
• Collaborate with customer-centric experts
• Embrace cultural diversity in our global team

In a dynamic industry where passion drives our teams to make a difference to become the most trusted partner for global satellite connectivity, you will elevate your skills in a stretching, rewarding, and meaningful environment. At Eutelsat, we’re united by inclusion and diversity, striving for gender balance and social responsibility, on Earth and in Space.

Why Eutelsat ?

• Commitment to Diversity & Inclusion: With colleagues from over 75 countries, we embrace our global DNA and are committed to creating an inclusive workplace. We are proud that one-third of our executive team and 60% of our board are represented by women.
• Ways of Working That Drive Us: As "One Team," we work collaboratively towards shared goals, with customer-centricity, respect, and inclusivity as our guiding principles.
• Sustainability at Our Core: At Eutelsat, sustainability is more than just a word; it’s woven into our strategy. We’re dedicated to balancing social, environmental, and economic growth — both on Earth and in space.
• Work-Life Balance: We offer flexible schedules and hybrid work options to help you balance your personal and professional life. At Eutelsat, we are committed to supporting your well-being and ensuring you have the flexibility you need to succeed both at work and at home.

Role Overview

Eutelsat is seeking an experienced End-to-End Functional Architect to define and coordinate functional architecture of complex satellite communication systems and services.

The role is responsible for translating service needs, operational use cases, system requirements into coherent end-to-end functional architectures. This includes defining functional chains, identifying functions required to deliver each service, allocating those functions across the relevant system domains and establishing the interactions and information flows between them.

The role requires close coordination with internal engineering teams, suppliers, partners and programme stakeholders to resolve cross-domain functional issues and maintain architectural consistency throughout the system lifecycle.

Key Responsibilities

• Define and maintain the end-to-end functional architecture for assigned services, capabilities and operational use cases.
• Develop end-to-end functional chains describing how services are orchestrated, established, delivered, maintained, monitored and terminated across the system.
• Identify the system functions required to support each service and define their relationships, dependencies, states and interactions.
• Allocate functions across the relevant user, service, 5G, network, space, ground and operations domains.
• Define the functional boundaries between system elements and ensure that responsibilities are clearly allocated without gaps, ambiguity or unnecessary duplication.
• Define end-to-end functional behaviour for nominal operation, degraded modes, failure conditions, recovery scenarios and operational interventions.
• Define the information exchanged between functions and establish the functional needs to be reflected in internal and external interface requirements.
• Architecture coordination and consistency
• Maintain the agreed functional architecture baseline for the assigned scope.
• Coordinate the resolution of functional architecture issues spanning multiple subsystems, engineering disciplines, suppliers, partners or organisational boundaries.
• Assess proposed architecture changes, design solutions and supplier submissions for consistency with the agreed end-to-end functional architecture.
• Identify architectural assumptions, constraints, dependencies and unresolved issues, and ensure that they are visible to the relevant stakeholders.
• Lead or contribute to architecture trade studies, system architecture reviews, design reviews and technical governance forums.
• Provide technical guidance to domain architects, engineering teams, suppliers and partners on the interpretation and application of the functional architecture.
• Architecture coordination and consistency
• Ensure consistency between service definitions, operational use cases, functional architecture, system requirements and subsystem responsibilities.
• Support the decomposition and allocation of service-level and system-level requirements into verifiable functional requirements.
• Work with interface owners to ensure that interface requirements support the relevant functional chains, information exchanges and allocated behaviours.
• Maintain traceability between services, use cases, functions, requirements, interfaces and verification objectives.
• Work with integration, verification and validation teams to define end-to-end verification scenarios and ensure that the intended system and service behaviour can be demonstrated.
• Assess functional impacts arising from changes to requirements, interfaces, domain architectures or supplier solutions.

Required Experience

• 5–10 years of relevant professional experience in end-to-end functional architecture, system architecture or systems engineering for complex telecommunications or other distributed systems.
• A master’s degree or PhD in telecommunications, electrical engineering, computer science, or a related discipline.
• Experience identifying, decomposing and allocating functions across multiple system elements or engineering domains.
• Strong understanding of telecommunications system architecture and the interactions between user, radio access, core network, transport, service and operations functions.
• Experience maintaining consistency and traceability between services, use cases, functional architecture, requirements, interfaces and verification objectives.
• Experience assessing domain-level architecture or design solutions against end-to-end system needs and architectural constraints.
• Experience resolving technical issues that span multiple engineering disciplines, system domains or supplier responsibilities.
• Experience working within architecture reviews, design reviews or technical governance processes.
• Ability to distinguish architectural requirements and constraints from implementation choices and supplier-specific solutions.
• Ability to produce clear, structured and technically rigorous architecture documentation.
• A degree in telecommunications, electrical engineering, computer science, systems engineering or a related discipline, or equivalent relevant professional experience.
• Strong written and verbal communication skills in English.
• Experience with satellite communication systems, non-terrestrial networks or LEO, MEO or GEO satellite constellations.
• Experience with 5G System architecture, including interactions between user equipment, NG-RAN, the 5G Core, transport networks and service platforms.
• Experience defining functional architectures spanning space, ground, user, network, service and operations domains.
• Understanding of IP networking, routing, packet transport and protocol-based system interactions.
• Experience supporting the definition and justification of end-to-end service architectures.
• Experience working on large-scale, multi-supplier telecommunications or system-of-systems programmes.
• Experience supporting system integration, end-to-end verification, validation or operational-readiness activities.
• Experience maintaining architecture baselines, traceability and architectural decision rationale.
• Experience contributing to architecture trade studies and formal system or design reviews.

Candidate Profile

You combine strong technical depth with an end-to-end architectural perspective. You can translate service, operational and system needs into a coherent functional architecture while maintaining a clear distinction between architectural intent and detailed implementation.

You are comfortable working at system level and examining behaviour down to the relevant functional interfaces and protocol interactions. You can understand the implications of domain-level design choices while working collaboratively with the responsible domain architects and engineering teams.

You can lead cross-domain technical discussions, constructively challenge proposed solutions and reconcile competing requirements, constraints and supplier positions. You communicate architectural decisions clearly and are able to build alignment across internal teams, customers, partners and suppliers.

The role provides broad technical influence across the service, 5G, network, space, ground and operations domains. Its central objective is to ensure that individually designed system elements operate together as a coherent end-to-end service.

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