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Senior Messaging Technical Architect - Freelance (M/F)

Collective.workParisEURESpublished 09/16/2026
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Machine translation — original language: French.Show original

CONTEXT

We are looking for a Senior Messaging Technical Architect for a long-term mission in Île-de-France. The position is part of an international environment with a significant messaging infrastructure, comprising more than 100,000 addresses.

MISSIONS

  • Design messaging technical architectures and produce HLD/LLD documents
  • Evolve and maintain in operational conditions an infrastructure of more than 100,000 addresses
  • Manage SMTP routing and messaging flow security
  • Manage complex incidents, changes, and level 3 support with international teams
  • Optimize infrastructure administration and monitoring
  • Automate operations using PowerShell scripts
  • Write installation and operation procedures as well as test plans
  • Participate in the integration of new international entities into a centralized infrastructure

INDISPENSABLE SKILLS

  • Confirmed expertise in Cisco ESA / IronPort
  • Excellent mastery of the SMTP protocol and message routing
  • Mastery of DMARC, DKIM, SPF, and S/MIME mechanisms
  • Knowledge of sandboxing, IIS, and PowerShell
  • Solid experience of at least 10 to 12 years in messaging technical architecture
  • Ability to intervene on level 3 incidents in an international environment

WORKING CONDITIONS

  • Location: Île-de-France
  • Remote work: 1 day per week
  • Start date: ASAP
  • Long-term mission
  • Sought level: Senior technical architect / Expert
  • Professional English mandatory

TECHNOLOGICAL SPECIALTIES

  • Architecture
  • Cisco
  • Cybersécurité
  • PowerShell (using PowerShell scripts)

#Recrutement #ArchitecteMessagerie #CiscoIronPort #CiscoESA #SMTP #PowerShell #Cybersécurité #InfrastructureIT

  1. Minimum 8 to 10 years of experience in messaging technical architecture
  2. Confirmed expertise in Cisco ESA / IronPort
  3. Excellent mastery of the SMTP protocol and message routing
  4. Mastery of DMARC, DKIM, SPF, and S/MIME mechanisms
  5. Knowledge of sandboxing, IIS, and PowerShell
  6. Ability to intervene on level 3 incidents in an international environment
  7. Professional English mandatory