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Amine HjiejAH

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Freelancer profile translated to English.
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About Amine

**Enterprise and Solutions Architect with 13 years of experience**, including significant experience in a leading consulting firm (PwC). I support organizations in structuring their Information Systems and modernizing their business and operational models through the transformation of their application, data, and infrastructure architectures.


I intervene when companies need to evolve their business capabilities, rationalize their IS, or launch new services, and when it's necessary to rethink all or part of the IS architecture. My role is to:
  • translate business challenges into coherent, sustainable, and value-creation-oriented target architectures;
  • facilitate workshops for validation and adjustment of architectural choices (typically in Design Authority);
  • then develop a realistic, budgeted, and prioritized roadmap.

My approach is systemic and business-oriented, with constant attention to security, resilience, and governance, in complex and potentially regulated environments. Technologies (cloud, data, AI) are used as levers for transformation, integrated into an overall vision and results-oriented.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km)

Experience

  • EUTELSAT S.A.
    Enterprise Architect - Carve-out Program (PwC Mission)
    TELECOMMUNICATIONS
    May 2025 - February 2026 (9 months)
    Paris, France
    Context
    Intervened as an OSS Enterprise Architect within the framework of an Eutelsat ground segment operations carve-out program, aiming to divest assets and create a new entity dedicated to satellite operations, with a strong requirement for Day 1 / Day 2 operational continuity.

    Role and Responsibilities
    Lead OSS Enterprise Architect for the carve-out program, responsible for the overall structuring of the OSS architecture and defining binding architectural decisions. Key contributor to the expression and formalization of Day 1 / Day 2 operational needs, with direct responsibility for the Monitoring & Control scope, identified as critical for operational Day 1.
    Interface between business teams, IT, partners, and program governance, presenting and defending choices in Design Authority.

    Work Performed
    – Construction of the OSS business architecture as a reference framework for the carve-out
    – Analysis of operational needs and Day 1 / Day 2 scenarios
    – Comparative study of architectural targets (SaaS / IaaS / on-prem / hybrid), integrating cost, security, resilience, and performance constraints, and outage scenarios
    – Recommendation and validation of a PaaS target aligned with Day 1 continuity objectives
    – Design of HLD / LLD architectures for the Monitoring & Control solution
    – Definition of network flows and OSS integration principles
    – Development of the execution-ready build, migration, and cutover plan
    – Management of build, test, migration, and cutover phases

    Results and Impact
    – Traceable OSS target architecture validated by Design Authority
    – Key decisions made ensuring operational Day 1 without service disruption
    – Design and execution plan delivered on time
    – Work reusable by the new entity in its growth trajectory
    – Sustainable strengthening of the partnership between program stakeholders
    Monitoring Observability OSS Enterprise Architecture Carve-out
  • Orange Business
    IT Consultant - Product Engineering Structuring (PwC Mission)
    TELECOMMUNICATIONS
    April 2024 - April 2025 (1 year)
    Paris, France
    Context
    Orange Business wished to structure and industrialize the design of new B2B offerings in an international and multi-product context, covering connectivity services (SD-WAN, IoT as a Service), digital services, and managed offerings with a strong technological component (Observability as a Service).

    Role
    Acted as Managing Consultant in IT Architecture and Product Management, within a PwC mission, to support the Head of Products in defining and implementing a shared and operational Product Engineering process.

    Key Contributions
    – Definition of an end-to-end Product Engineering process, covering: ideation, functional analysis, architecture, design, MVP, development, market launch
    – Alignment of the process with Orange Business's SAFe transformation
    – Design of functional analysis templates to improve the efficiency of Product & Marketing teams
    – Support for Product, Marketing, and Architecture teams in designing modular and composable products
    – Contribution to product modeling and detailed architecture work
    – Alignment of product practices with reusability and time-to-market reduction objectives

    Impact
    – Structured and adopted Product Engineering process
    – Improved consistency between product vision, IT architecture, and delivery
    – Accelerated launch of new offerings
    – Reduced friction between product and technical teams
    Product Development IoT Observability SD-WAN BPMN
  • Orange Business
    Enterprise Architect - DevSecOps & SRE (PwC Mission)
    TELECOMMUNICATIONS
    February 2024 - April 2024 (2 months)
    Paris, France
    Context
    As part of Orange Business's IT transformation, the client aimed to structure and harmonize its group-wide DevSecOps and SRE practices in an international, multi-team, and multi-vendor environment, including internal applications and critical SaaS solutions.

    Role
    Acted as an Enterprise Architect, within a PwC mission, to define a target DevSecOps & SRE architecture and operating model, aligned with business, security, and operational objectives.

    Key Contributions
    – Analysis of existing DevSecOps / Run practices across the entire application portfolio, including SaaS solutions (Salesforce, ServiceNow)
    – Definition of a target DevSecOps & SRE architecture, covering: build and deployment pipelines, integrated security (security by design), service observability, and reliability
    – Development of the target operating model, including roles, responsibilities, and team interactions
    – Definition of functional, non-functional, and technical requirements for publishers and vendors
    – Contribution to aligning tools, processes, and governance with the defined target

    Impact
    – Shared and understood DevSecOps & SRE target by IT teams
    – Clarification of responsibilities between build and run
    – Structuring basis for vendor alignment and operational practice transformation
    DevSecOps Architecture SRE Enterprise Architecture Target Operating Model Business Architecture

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Education

  • Engineering Degree
    CentraleSupélec
    2013
    Diplômé de CentraleSupélec, j’y ai suivi une spécialisation en Transformation Digitale, Systèmes d’Information et Télécommunications, avec un accent particulier sur les systèmes de radiocommunication et l’architecture d’infrastructures de grande échelle. La formation m’a également apporté de solides fondations en énergie, informatique et data science, me permettant de développer une compréhension systémique de la manière dont la technologie soutient l’innovation, la performance opérationnelle et les enjeux business.

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