The Nuclear Energy Agency - IT Systems Architect
Main Responsibilities
Architecture & Design
Define and maintain the target-state architecture for a hybrid Microsoft ecosystem spanning on premises datacenters and Azure.
Oversee and define solution designs for identity, access, storage, and compute.
Develop reference architectures and standards for Windows Server, Microsoft 365, and Azure services and produce high quality architecture artefacts (design diagrams, runbooks).
Hybrid Infrastructure (On Prem & Cloud)
Deploy and optimize Hyper V–based virtualization; manage clusters, host configuration, VM templates, and performance.
Administer VMware virtual machines and optimize Microsoft licensing.
Plan and execute server lifecycle management (capacity planning, patching, image baselines).
Manage Azure subscriptions, resource groups, policy, RBAC, and tagging.
Define and apply backup and recovery procedures.
Microsoft 365 & Identity
Provide end-to-end administration and operational oversight of Microsoft 365 (Exchange Online, SharePoint Online, OneDrive, Teams, Intune/Endpoint Management, Purview).
Manage Entra ID, conditional access, identity protection, MFA, SSO, privileged identity management (PIM).
Establish device compliance and configuration policies (Intune/Autopilot), application protection, and update rings.
IT Operations & Support
Provide Tier 2 support for incidents and problems; guide root cause analysis and permanent fixes.
Mentor and enable the IT Support team with runbooks, knowledge articles, and training to improve first call resolution.
Participate in calls for tender, and change advisory processes.
Maintain comprehensive architecture documentation, inventories, topology maps, and SOPs.
Establish governance for resource naming, tagging, cost allocation, backup, and data retention.
Other
Carry out other related duties assigned by the NEA IT Systems Manager.
Qualifications
Ideal Candidate Profile
Academic and Professional Background
A university degree in computer science, information systems, or equivalent work experience.
3 - 5 years of progressive experience in infrastructure engineering with a focus on Microsoft technologies.
Required Qualifications
At least 5 years of experience with Windows Server (2019/2022/2025), Active Directory/Entra ID, Group Policy, DNS/DHCP, ADFS, AD Certificate Services, file/print services.
At least 3 years of experience administering Microsoft 365 in a hybrid environment.
Preferred Qualifications (Nice to Have)
Hyper-V experience: Storage Spaces Direct (S2D) cluster.
Experience with Microsoft Azure
Exposure to VMware vSphere/ESXi
Experience with Linux systems
Proficiency with PowerShell scripting and automation
Familiarity with Infrastructure as Code (Bicep/ARM/Terraform)
Tools & Technical Skills
Backup: Microsoft 365 Backup, Azure Backup, Veeam Backup & Replication.
ITSM platform: Freshservice, ServiceNow, Jira, Remedy or other
Certifications: Microsoft 365 Certified: Enterprise Administrator Expert; Microsoft Certified: Windows Server Hybrid Administrator Associate, ITIL v4 Foundation.
Additional Information
Core Competencies
OECD staff are expected to demonstrate behaviours aligned to six core competencies which will be assessed as part of this hiring process: Vision and Strategy (Level 1); Enabling People (Level 1); Ethics and Integrity (Level 2); Collaboration and Horizontality (Level 2); Achieve Results (Level 2); Innovate and Embrace Change (Level 2).
To learn more about the definitions for each competency for levels 1-3, please refer to OECD Core Competencies.
Languages
Fluency in one of the two OECD official languages (English and French) and knowledge of the other, with a commitment to reach a good working level.
Closing Date
This vacancy should be filled as soon as possible, and applications should reach us no later 6 April 2026 at 23:59 (Paris time).
Contract Duration
36-month fixed-term appointment.
Please note that our Rules and Regulations stipulate that the mandatory retirement age is 67.
What the OECD offers
- Monthly salary starts at 6 838.10 EUR, plus allowances based on eligibility, exempt of French income tax.
- Click here to consult the Staff Regulations applicable to officials of the OECD. Please note that from 1 July 2025, all Official appointments will be made under the OECD’s new contractual modalities.
- Click here to learn more about what we offer and why the OECD is a great place to work.
- Click here to browse our People Management Guidebook and learn more about all aspects relating to people at the OECD, our workplace environment and many other policies supporting staff in their daily life.
- Please note that the appointment may be made at one grade lower in the specified job family, based on the qualifications and professional experience of the selected applicant.
- This vacancy may be used to create a pool of candidates for comparable positions, both for open-ended and fixed-term functions.
Selection Process
For retained candidates, the selection process may include a video-recorded interview, job-based assessment and panel interviews.
The OECD is an equal opportunity employer and welcomes the applications of all qualified candidates who are nationals of NEA or OECD member countries, irrespective of their racial or ethnic origin, opinions or beliefs, gender, sexual orientation, health or disabilities.
The OECD promotes an optimal use of resources in order to improve its efficiency and effectiveness. Staff members are encouraged to actively contribute to this goal.