The Nuclear Energy Agency - IT Systems Architect
OECD
1 day ago
Full-time
On-site
Paris Île-de-France Region France
Company Description
The Organisation for Economic Co-operation and Development (OECD) is an international organisation comprised of 38 member countries, that works to build better policies for better lives. Our mission is to promote policies that will improve the economic and social well-being of people around the world. Together with governments, policy makers and citizens, we work on establishing evidence-based international standards, and finding solutions to a range of social, economic and environmental challenges. From improving economic performance and creating jobs to fostering strong education and fighting international tax evasion, we provide a unique forum and knowledge hub for data and analysis, exchange of experiences, best-practice sharing, and advice on public policies and international standard-setting.
The Nuclear Energy Agency (NEA) is an intergovernmental agency which operates under the framework of the Organisation for Economic Cooperation and Development (OECD). It facilitates co-operation among countries with advanced nuclear technology infrastructures to seek excellence in nuclear safety, technology, science, related environmental and economic matters and law. The mission of the NEA is to assist its 34 member countries in maintaining and further developing, through international cooperation, the scientific, technological and legal bases required for a safe, environmentally sound and economical use of nuclear energy for peaceful purposes. It strives to provide authoritative assessments and to forge common understandings on key issues as input to government decisions on nuclear technology policies.
The NEA is seeking an experienced IT Systems Architect to design, implement, and govern a secure, resilient, and cost effective hybrid infrastructure centered on Microsoft technologies, and including Linux systems. This role manages the lifecycle of Windows Servers, Microsoft 365, and Microsoft Azure services across a mixed environment of on premises virtualized workloads and cloud platforms. Reporting to the IT Systems Manager, this position will be involved in core IT Operations and Support, ensuring high availability, performance, and adherence to security and compliance rules.
Job Description
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.
The Organisation for Economic Co-operation and Development (OECD) is an international organisation comprised of 38 member countries, that works to build better policies for better lives. Our mission is to promote policies that will improve the economic and social well-being of people around the world. Together with governments, policy makers and citizens, we work on establishing evidence-based international standards, and finding solutions to a range of social, economic and environmental challenges. From improving economic performance and creating jobs to fostering strong education and fighting international tax evasion, we provide a unique forum and knowledge hub for data and analysis, exchange of experiences, best-practice sharing, and advice on public policies and international standard-setting.
The Nuclear Energy Agency (NEA) is an intergovernmental agency which operates under the framework of the Organisation for Economic Cooperation and Development (OECD). It facilitates co-operation among countries with advanced nuclear technology infrastructures to seek excellence in nuclear safety, technology, science, related environmental and economic matters and law. The mission of the NEA is to assist its 34 member countries in maintaining and further developing, through international cooperation, the scientific, technological and legal bases required for a safe, environmentally sound and economical use of nuclear energy for peaceful purposes. It strives to provide authoritative assessments and to forge common understandings on key issues as input to government decisions on nuclear technology policies.
The NEA is seeking an experienced IT Systems Architect to design, implement, and govern a secure, resilient, and cost effective hybrid infrastructure centered on Microsoft technologies, and including Linux systems. This role manages the lifecycle of Windows Servers, Microsoft 365, and Microsoft Azure services across a mixed environment of on premises virtualized workloads and cloud platforms. Reporting to the IT Systems Manager, this position will be involved in core IT Operations and Support, ensuring high availability, performance, and adherence to security and compliance rules.
Job Description
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.