Mission freelance Technical Infrastructure & Network Architect

Notre client dans le secteur Aérospatial et défense recherche un/une Technical Infrastructure & Network Architect H/F

Description de la mission :

Context

The role supports transformation, modernization and operational initiatives across multiple projects and sites, including industrial/OT environments. The Technical Infrastructure & Network Architect works closely with Enterprise, Solution, Application, Data, Cloud and Security Architects, as well as Infrastructure, Network, DevOps and project teams. Network and infrastructure architecture are part of the overall solution architecture, not isolated technical domains.

Mission

Provide technical architecture leadership across infrastructure, network, cloud and hybrid environments. Define coherent, secure, resilient and operable technical architectures, and support delivery from design through implementation and transition to operations. Contribute to cross-domain architecture decisions and challenge proposed solutions where required.

Key responsibilities

• Translate business, application and solution requirements into technical architecture requirements covering hosting, connectivity, performance, availability, security, resilience, backup/recovery, monitoring and supportability.

• Define target and reference architectures, reusable standards and technical patterns across sites.

• Produce HLDs and architecture documentation, and review LLDs and detailed technical designs.

• Analyse impacts, dependencies, risks, architecture gaps, single points of failure and operational constraints.

• Challenge solutions proposed by projects, suppliers and engineering teams, and assess alternatives.

• Document key architecture decisions through Architecture Decision Records (ADRs).

• Assess deviations from architecture and technical standards and support governance and approval processes.

• Define Build-to-Run requirements and support production readiness, operational handover and knowledge transfer.

Technical environment

• Architecture practices: ArchiMate, TOGAF or equivalent methodology, architecture principles and standards, Architecture Decision Records, target-state architecture, impact and dependency analysis, architecture governance

• Infrastructure and network: LAN/WAN, routing, switching, VLANs, subnets, network segmentation, firewalls, DMZs, security zoning, Wi-Fi, site/datacenter connectivity, compute, virtualization, Windows, Linux, storage, backup and recovery, high availability, disaster recovery, hybrid infrastructure

• Cloud and hybrid: AWS architecture and networking, VPC, subnets, route tables, Internet/NAT Gateway, Transit Gateway, VPC Peering, PrivateLink, Security Groups, Network ACLs, Route 53, AWS Direct Connect, AWS Landing Zone

• APIs and integration: REST APIs, OpenAPI, OAuth2, OIDC, JWT, mTLS, API Gateway, reverse proxy, API security, rate limiting, webhooks, event-driven architecture, Kafka, messaging, AMQP, SFTP, HTTPS

• Industrial/OT: IT/OT segregation, industrial DMZs, factory and edge connectivity, industrial Wi-Fi, secure remote access

Expected deliverables

• Target and reference architectures

• HLDs and architecture diagrams

• Architecture Decision Records

• Technical requirements and design reviews

• Architecture risk and dependency assessments

• Standards exception records

• Architecture inputs to production readiness and operational handover

Profile

Experience

• 10+ years of experience in infrastructure/network architecture or senior infrastructure engineering, with demonstrated architecture responsibility in complex environments.

• Experience with industrial or critical environments is a strong advantage.

Technical skills

• Strong expertise across infrastructure and network architecture.

• Proven ability to define target architectures, produce HLDs and challenge detailed technical designs.

• Good understanding of ArchiMate, TOGAF or equivalent architecture methodologies.

• Working knowledge of AWS/hybrid cloud architecture and cloud networking.

• Working understanding of APIs and modern integration patterns.

• Ability to identify cross-domain impacts and dependencies across infrastructure, network, cloud, applications and security.

Soft skills

• Strong collaboration skills with architects, engineering teams, projects and suppliers.

• Pragmatic technical judgement, balancing security, resilience, operability, cost and delivery constraints.

• Ability to produce clear, concise and actionable HLDs, architecture diagrams, technical requirements and decision records.

Languages

• French: fluent/professional

• English: professional working proficiency

Compétences / Qualités indispensables :

Infrastructure and network architecture, Target architectures, HLDs and technical design reviews, AWS and hybrid cloud networking, Architecture practices (ArchiMate, TOGAF, ADRs), Cross-domain architecture and security analysis, French and English professional proficiency

Compétences / Qualités qui seraient un + :

Informations concernant le télétravail :

Oui — 1 jour/semaine