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Date: 3 Sep 2023

Location: Saint-Ouen, FR

Company: Alstom

We create smart innovations to meet the mobility challenges of today and tomorrow. We design and manufacture a complete range of transportation systems, from high-speed trains to electric buses and driverless trains, as well as infrastructure, signalling and digital mobility solutions. Joining us means joining a truly global community of more than 75 000 people dedicated to solving real-world mobility challenges and achieving international projects with sustainable local impact. 

Job purpose:

Reporting to the Network Build Manager, you will be in charge to review and design Network and Network Security architectures and services in the context of new business, transformation and merge & acquisitions for the following scope:

  • Connectivity: LAN, SDWAN, Wi-Fi, DDI
  • Network Security: Firewall, IDS/IPS, Zscaler, VPN, ZTNA


Your job:

Key Responsibilities & Accountabilities:

  • Cross domains:

- Gather, collect and formalize business requirements from different representatives (business partners, clients, partners, projects, business solutions …)

Convert business requirements into technical specifications with formalized use cases 

Write and review High and Low-Level Design documents ensuring interoperability, scalability and security compliance

- Define and write Acceptance Testing plan

- Contribute to and validate project scoping

- Ensure handover to projects teams and validate project progress gates

- Evaluate new technology solutions for an integration to the roadmap, in collaboration with Business Partners, Projects, Operations and architects members

- Support operations teams with regard to : P1 incidents acting as expert / Non- Standard Service Requests fulfillment / Capacity and availability Planning / Service Catalog / Change Management

- Develop, change and improve processes

- Manage risks and opportunities

- Delegate activities and manage contractors

- Act as architect go to person for internal and external stakeholders like partners


  • New Business:

- Review and validate proposed architectures

- Define or update existing patterns to accelerate project delivery


  • Transformation: 

Analyze technology and market trends

- Own and share a technology vision

- Define and drive the transformation roadmap

- Define b-case and ensure value realization

- Compare options, share pros and cons and arbitrate

- Support some critical or strategic transformation projects


  • M&A:

- Understand M&A milestones and expectations

- Develop an M&A strategy and architecture to answer business needs

- Ensure Day 1 readiness

- Post Go Live support


Main challenges of the role:

  • Act as accountable for all Services while service is managed by third party and controlled by operations
  • Find the right tradeoff between make or buy and deliver or delegate/control
  • Manage changing priorities
  • Help the operation team to manage the Network services issues in order to ensure business continuity



To be considered for this role, candidate need to demonstrate the following skills experience and attributes:    

  • Graduated with an engineering degree, in Information Technology, you have more than 7 years of experience in Network and Network Security services, and more the 3 years as an architect
  • You have worked for global companies either as a service provider or as a customer, ideally both roles
  • You have very good technical skills on different topics and are curious
  • You demonstrate good communication, efficiency and ability to execute. You are result oriented and show intellectual curiosity and creativity. Leadership is key.
  • Fluent in English, you are eager to work with autonomy in an international environment and to face the challenges of the new Alstom
  • Be familiar with the following domains:



- DDI (DNS, DHCP, IP Plan)


- IDS/IPS : McAfee

- Remote access : VPN, ZTNA

- Cloud Network (ZSCALER, AZURE)

An agile, inclusive and responsible culture is the foundation of our company where diverse people are offered excellent opportunities to grow, learn and advance in their careers.  We are committed to encouraging our employees to reach their full potential, while valuing and respecting them as individuals.

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