The Nuclear Energy Agency - Software Engineer, Paris

OECD - Organisation for Economic Co-operation and Development; Paris; On-site; EUR 58,000 - 62,000; Full time

Job summary

The Nuclear Energy Agency (NEA) is seeking a skilled Software Engineer to develop and deploy a modern database and software infrastructure for the Data Bank’s services, especially the CPS. You will work on secure, maintainable production-grade software for long-term use, deployment, and support, under the Head of the Data Bank.

Ideal candidates have strong Python, Django, FastAPI skills, CI/CD experience, and familiarity with containerisation and cloud platforms.

Qualifications

• University degree in mathematics, computer science, science, engineering or equivalent.
• Minimum of two years of software development experience.
• Proven CI/CD, version control and containerisation experience.
• Good communication skills across technical fields.
• Knowledge of nuclear engineering, physics or reactor simulation is a plus.

Responsibilities

• Modernise the CPS workflow and build secure software/database infra.
• Integrate new software into broader NEA IT infrastructure and enable logging/reports.
• Maintain Data Bank digital services and infrastructure with modern best practices.
• Assist with API-enabled frameworks for nuclear data management.

Skills

Python

Django

FastAPI

Education

University degree in CS/Math/Engineering

Tools

Docker

Kubernetes

Git

GitHub

Job description

The Nuclear Energy Agency - Software Engineer

• Full-time
• Directorate: NEA
• Grade: CF2

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 Data Bank operates as an international centre of reference for its member countries with respect to basic nuclear tools, such as computer codes and nuclear data, used for the analysis and prediction of phenomena in the nuclear field. It provides a direct service to its users by acquiring, developing, improving and validating these tools and making them available as requested.

We are looking for a skilled Software Engineer to develop and deploy a modern database and software infrastructure for the NEA Data Bank’s services, particularly its Computer Program Service (CPS) which is responsible for the secure and accountable acquisition, testing and distribution of nuclear simulation codes. The selected candidate will have strong DevOps, programming and data management skills and will work with Data Bank staff to develop robust, maintainable, production-quality software intended for long-term use, deployment, and support. S/he will work under the supervision of the Head of the Data Bank.

Main Responsibilities

Software Infrastructure Development

• Modernise the CPS Workflow: develop a secure, efficient software and database infrastructure to streamline code and benchmark distribution.
• Work with NEA colleagues to ensure the effective integration of new software into broader NEA IT infrastructure and facilitate logging and reporting of CPS distribution activities.
• Maintain and monitor relevant Data Bank digital services, interfaces and associated infrastructure, applying modern best practices in all areas of your work, including the re-implementation of functionality from legacy codebases to other programming languages while ensuring consistency of business logic and system behaviour.
• Assist senior staff with the implementation and maintenance of new API-enabled frameworks for the management of nuclear physics data, nuclear energy experimental data, and other data, as required.

Communication and Liaison

• Develop good working relationships and close contacts across the Agency and Data Bank to understand software and database needs across the business and act as a contact point for scientific software solutions.
• Work closely with Data Bank staff to understand user needs and advise on software and DevOps solutions.
• Report on and present the work of the NEA Data Bank in your area of work to internal and external audiences.

Other

• Carry out other related duties as assigned by the Head of the Data Bank.

Ideal Candidate Profile

Academic and Professional Background

• An university degree in mathematics, computer science, science, engineering or an equivalent qualification. An advanced degree would be an advantage but is not required.
• A minimum of two years of experience in the field of software development.
• Proven track record of the effective use of CI/CD pipelines, software version control, database administration and containerisation.
• Strong communication skills and a demonstrated capability to work across technical fields.
• Knowledge of nuclear engineering, physics, reactor simulation, nuclear data processing or modelling of nuclear systems would be an advantage.

Tools & Technical Skills

• Strong expertise with Python and Django, FastAPI and/or Django Rest Framework .
• Good knowledge of relational database management and SQL.
• Experience with Linux-based Operating Systems.
• Familiarity with cloud environments and containerisation (Docker/Kubernetes).
• Experience with version control systems and associated platforms (git, GitLab, GitHub).
• Knowledge of AI methodologies including LLMs and RAG pipelines would be an advantage.

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); Enable People (Level 1); Ethics and Integrity (Level 1); Collaboration and Horizontality (Level 1); Achieve Results (Level 2); Innovate and Embrace Change (Level 1).
• 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

• DEADLINE EXTENDED: This vacancy should be filled as soon as possible, and applications should reach us no later thanSunday 18October2026 at 11:59 PM(Paris time).

Contract Duration

24 month fixed-term appointment, with the possibility of renewal to a maximum of 36 months.

What the OECD offers

• Monthly salary starts at 5 279.34 EUR, plus allowances based on eligibility, exempt of French income tax.
• 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.