
Assystem
About the Company
Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition. We see ourselves as an activist in the development of nuclear energy, convinced that it is an essential part of the fight against climate change.
7,500 switchers, spread in 12 countries in Europe, Asia, Africa and the Middle East are working every day to make the energy switch by accelerating the development of nuclear and renewable energies, power grids, clean hydrogen projects and low-carbon transport.
We design and supervise major projects through our engineering activities and accelerate our customers' digital transformation. We also develop new solutions to build faster and improve the performance of complex infrastructures.
55 years of experience have made Assystem a key partner of the world's largest industrial groups: CEA, EDF, ENEC, Enedis, Engie, Framatome, ITER, K.A. CARE, Naval Group, NICDC, Orano, RATP, Rolls Royce, Royal Commission, Sellafield, SGP, SNCF...
Assystem is ranked in the Top 3 companies in the nuclear energy sector.
Listed Jobs


- Company Name
- Assystem
- Job Title
- Resource Manager
- Job Description
-
The UK government has pledged to reach carbon neutrality by 2050 and, as such, is pushing ahead with significant investment in nuclear and renewable energies.
Assystem, as a leading provider of project management, design engineering & construction supervision services within the nuclear industry, has aligned its own strategy to support this switch to low-carbon energy, whilst also recognising transport and infrastructure systems to be a major factor in influencing the outcome of government policy.
By acquiring Logikal in 2023, Assystem reaffirmed their commitment to the UK’s energy transition by combining strengths with a long-established provider of expertise to the transport & infrastructure sectors. We deliver professional services within PMO project delivery, particularly in the areas of project planning, project controls, risk management and enhanced business intelligence.
Based on these solid foundations, our team continues to build on its existing capability and has ambitious plans to develop its reach within both the transport & infrastructure sectors and through the additional opportunities offered via the Assystem network within the nuclear sector.
Our objectives will ultimately be defined by our ability to attract and retain those talented individuals who share our vision and wish to join us in shaping the future.
Job Description
Job Summary:
The Resource Manager is responsible for ensuring the efficient allocation and utilization of resources within the organization, including personnel, equipment, and materials. This role requires close coordination with project managers, department heads, and team leads to ensure resources are appropriately assigned to meet project goals and organizational objectives.
Key Responsibilities:
Resource Planning & Allocation:
Collaborate with project managers and department heads to understand resource requirements for ongoing and upcoming projects.
Ensure that resources are allocated appropriately based on skills, availability, and project deadlines.
Maintain an up-to-date resource allocation plan, adjusting for changes in workload or project priorities.
Staffing & Workforce Management:
Oversee the staffing process, ensuring that the right talent is available for different roles, from recruitment to placement.
Manage resource forecasts and track availability of internal staff.
Identify skills gaps and recommend appropriate training or external hiring solutions.
Project Support:
Provide resources to projects and ensure that project timelines and quality standards are met by maintaining the necessary staffing and equipment.
Work with project managers to resolve any resource-related conflicts, issues, or delays.
Tracking & Reporting:
Monitor resource utilization to ensure efficiency and avoid overloading or underutilizing employees or equipment.
Prepare and maintain reports on resource allocation, availability, and usage, presenting insights and recommendations to senior management.
Cost Management:
Collaborate with finance and operations teams to optimize resource use while staying within budget.
Ensure the optimal use of resources while minimizing wastage and redundancy.
Risk Management:
Proactively identify resource risks (e.g., resource shortages, delays) and develop contingency plans to mitigate them.
Manage and adjust for unplanned absences, sickness, or turnover of resources.
Communication & Collaboration:
Act as a liaison between departments, ensuring clear communication about resource needs, availability, and constraints.
Promote a culture of collaboration, ensuring that resources are shared and leveraged effectively across the organization.
Skills & Qualifications:
Education:
Bachelor’s degree in Business Administration, Human Resources, Operations Management, or a related field. Relevant certifications (e.g., PMP, PRINCE2, or HR certifications) are a plus.
Experience:
Proven experience in resource management, project management, or human resources.
Experience in coordinating and managing personnel, materials, and equipment across multiple projects or departments.
Skills:
Strong organizational and time management skills.
Excellent communication and interpersonal skills.
Problem-solving ability and adaptability in a fast-paced environment.
Proficient in resource management software (e.g., Microsoft Project, Resource Guru, or similar).
Ability to analyze data and prepare reports for management.
Personal Attributes:
Detail-oriented with the ability to handle multiple tasks simultaneously.
Strong leadership skills and a collaborative mindset.
Ability to remain calm under pressure and make data-driven decisions.
Additional Information
Benefits include:
Pension scheme (8% company contribution / 4% personal contribution)
25 days’ paid annual leave + bank holidays + option to buy or sell days
Professional fees reimbursed
Flexible working
Employee referral scheme
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.


- Company Name
- Assystem
- Job Title
- Python Developer
- Job Description
-
Assystem is an international company with one mission: accelerate the energy transition around the world.
Every day, our 7,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.
We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.
Drawing on more than 55 years' experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimise the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering.
To ensure a viable, efficient, and reliable energy future for all.
Job Description
Back End Python Developer – Join a Leading Force in the Global Energy Transition!
At Assystem, we're driving the future of energy. As a Back End Python Developer, you’ll have the unique opportunity to play a key role in accelerating the world’s shift to low-carbon energy. With your expertise in Python and cloud technologies, you’ll be shaping the digital services that power the projects at the forefront of the energy revolution.
Why You'll Love This Role:
Make a Global Impact: Contribute directly to the energy transition and sustainability efforts, helping to create a reliable, low-carbon energy future for all.
Work with Cutting-Edge Technologies: Design and build scalable, efficient, and secure server-side applications and APIs using Python (Django/Flask), alongside innovative cloud platforms like AWS, Azure, and GCP.
Collaboration at its Best: As part of an agile, multidisciplinary team, you’ll work closely with talented professionals across various fields—including product managers, UX designers, and front-end developers—to create world-class solutions.
Shape the Future: In this role, you'll have the chance to develop APIs that power critical infrastructure, all while adhering to government standards and the best practices of the industry.
Continuous Growth: Assystem is committed to fostering an environment of knowledge sharing, professional development, and continuous learning, ensuring you are always growing your skills in an innovative and forward-thinking company.
Key Responsibilities:
Build & Optimize: Develop, test, and maintain high-performance back-end services and APIs that are secure, scalable, and efficient.
Work with Data: You’ll manage both relational (PostgreSQL, MySQL) and NoSQL (MongoDB, DynamoDB) databases, creating flexible and reliable data architectures.
Cloud Deployment: Gain hands-on experience deploying and managing applications on top-tier cloud platforms (AWS, Azure, GCP) with tools like Terraform and CloudFormation.
Champion CI/CD & Agile: Take ownership of the CI/CD pipeline, ensuring seamless, automated testing and deployment in an Agile environment.
Ensure Top-Notch Security & Performance: Implement best-in-class security protocols and ensure systems meet the highest performance standards.
Qualifications
Essential Skills & Experience:
Python Mastery: Strong experience with Django or Flask frameworks.
API Development Expertise: A proven track record in designing secure, robust RESTful/GraphQL APIs and integrating with third-party services.
Cloud & DevOps: Experience deploying on AWS, Azure, or GCP, with a focus on infrastructure-as-code tools (Terraform, CloudFormation) and Docker/Kubernetes.
Agile Mindset: Hands-on experience in an Agile environment, using Git for version control and managing CI/CD pipelines.
Security & Performance Focus: Skilled at implementing authentication, encryption, and performance optimizations.
Desirable Skills:
Serverless & Microservices: Familiarity with AWS Lambda, Azure Functions, or microservices architectures.
Data & AI: Exposure to big data frameworks, ETL pipelines, or machine learning applications.
GDS Standards: An understanding of GOV.UK service standards and accessibility principles would be an added bonus.
Additional Information
Why Assystem?
Innovative Culture: At Assystem, we don’t just follow trends; we set them. By joining our team, you’ll be working alongside the brightest minds in energy and technology.
Global Reach: With operations across 12 countries, including Europe, the Middle East, and Asia, you’ll be part of a truly international and diverse team.
Impactful Work: You’ll contribute directly to projects that are shaping the future of energy, helping to reduce carbon footprints and build sustainable infrastructure that benefits people worldwide.
If you’re passionate about coding, cloud technologies, and making a meaningful difference in the world, then Assystem is the place to be. Join us, and let’s power a sustainable future together!
Why join the Switchers community?
Assystem has over 55 years of experience in nuclear engineering. We are among the top 3 largest nuclear engineering companies.
Attractive social benefits: an engaging and dynamic Employee Committee (CE), holiday bonuses...
Ongoing training throughout your career. Numerous career opportunities: 70% of our managers come from internal promotions!
Will be full time onsite in Derby
Need to obtain SC and sole UK National
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.


- Company Name
- Assystem
- Job Title
- DevOps Engineer
- Job Description
-
Assystem is an international company with one mission: accelerate the energy transition around the world.
Every day, our 7,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.
We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.
Drawing on more than 55 years' experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimise the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering.
To ensure a viable, efficient, and reliable energy future for all.
Job Description
DevOps Engineer – Drive Innovation in the Future of Digital Services!
At Assystem, we’re on a mission to accelerate the global energy transition by building innovative, scalable, and secure digital solutions. As a DevOps Engineer, you’ll be at the heart of this transformation, designing and managing cloud-based infrastructure and automation systems that power the future of energy. Join our dynamic, agile team and work with cutting-edge technologies while making a real impact on the world’s journey to a low-carbon future!
Why You'll Love This Role:
Be Part of the Global Energy Transition: Contribute to building sustainable, future-ready digital services that play a key role in the worldwide shift to low-carbon energy.
Work with the Latest Tech: Use top-tier tools and technologies such as AWS, Azure, GCP, Terraform, Kubernetes, Docker, and CI/CD platforms to build highly scalable, secure, and automated systems.
Collaborate with Top Talent: You’ll work closely with a diverse, multidisciplinary team, including software engineers, security experts, and operations professionals, to deliver cutting-edge solutions.
Continuous Growth & Learning: Expand your skillset in cloud, automation, and DevOps practices while contributing to innovative projects in a supportive and forward-thinking environment.
Make Security a Priority: Play a crucial role in implementing secure cloud architectures and ensuring compliance with industry-leading security standards.
Key Responsibilities:
Infrastructure Automation: Design and manage Infrastructure-as-Code (IaC) using Terraform, CloudFormation, or Ansible to create scalable and reliable cloud environments.
CI/CD Pipelines: Build and maintain efficient CI/CD workflows with tools like Jenkins, GitHub Actions, GitLab CI, or Azure DevOps for continuous integration and delivery.
Cloud Services: Deploy, monitor, and optimize applications on AWS, Azure, or GCP, ensuring high availability, cost-efficiency, and top performance.
Containerisation & Orchestration: Build and manage Docker containers and Kubernetes clusters, enabling seamless scaling and deployment.
Security & Compliance: Implement secure cloud architectures, automate security controls, and ensure compliance with GDS and NCSC security standards.
Monitoring & Logging: Use tools like Prometheus, Grafana, ELK Stack, or AWS CloudWatch to monitor system performance and health, ensuring uptime and identifying issues proactively.
Automation Support: Assist software engineers by automating repetitive tasks and streamlining workflows, driving efficiency across teams.
Best Practices & Uptime: Advocate for DevOps best practices and ensure high application uptime and system reliability.
Collaborate & Innovate: Work in an Agile environment alongside a talented team to ensure the seamless availability and reliability of digital services.
Qualifications
Essential Skills & Experience:
Infrastructure-as-Code (IaC): Strong experience with Terraform, CloudFormation, or Ansible to automate infrastructure provisioning.
Cloud Expertise: Hands-on experience with AWS, Azure, or GCP for cloud service deployment and management.
CI/CD & Automation: Proficiency in setting up CI/CD pipelines using Jenkins, GitHub Actions, GitLab CI, or Azure DevOps.
Containerisation: Experience building and managing Docker containers and Kubernetes clusters to support scalable applications.
Scripting & Automation: Skilled in scripting languages such as Python, Bash, or PowerShell for automating tasks and improving workflows.
Security & Performance: Knowledge of network security, identity management, and system hardening best practices.
Agile Development: Experience working within an Agile framework to support the development and operations of web applications.
Desirable Skills:
Serverless & Microservices: Experience with AWS Lambda, Azure Functions, and event-driven architectures.
Observability & Monitoring: Familiarity with monitoring tools like Splunk, Datadog, or New Relic for enhanced visibility and observability.
Networking: Knowledge of VPCs, VPNs, and load balancing in cloud environments.
GDS Standards: Awareness of GDS Service Standards and accessibility requirements, especially for public sector projects.
Additional Information
Why Assystem?
Innovative Culture: We are a forward-thinking company committed to fostering innovation and collaboration. Join us and help shape the future of energy and digital services.
Global Reach: With a presence in 12 countries, you’ll be part of an international team, working on exciting projects that have a global impact.
Make a Difference: The work you do will contribute directly to the energy transition, helping to build a sustainable future for all.
Career Growth: Assystem offers endless opportunities for professional development, giving you the chance to expand your expertise and take on new challenges.
Dynamic & Agile Environment: Join an Agile team of passionate professionals who value creativity, collaboration, and innovation.
If you're driven by automation, cloud technologies, and a passion for innovative solutions, Assystem is the perfect place to grow your career and make a lasting impact. Join us and be part of a team that’s transforming the world, one digital service at a time!
Why join the Switchers community?
Assystem has over 55 years of experience in nuclear engineering. We are among the top 3 largest nuclear engineering companies.
Attractive social benefits: an engaging and dynamic Employee Committee (CE), holiday bonuses...
Ongoing training throughout your career. Numerous career opportunities: 70% of our managers come from internal promotions!
Will be full time onsite in Derby
Need to obtain SC and sole UK National
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing...


- Company Name
- Assystem
- Job Title
- Chargé de marketing opérationnel et digital - Alternance H/F
- Job Description
-
Trouver des solutions au dérèglement climatique est la priorité du 21ème siècle, et implique de switcher à l’énergie bas-carbone. Chez Assystem, on s’est donc donné pour mission d’accélérer la transition énergétique partout dans le monde. Et pour y parvenir, nos 8000 Switchers couplent leur expertise historique en ingénierie et en management de projet aux technologies digitales.
Présent dans 12 pays (Europe, Moyen-Orient, Asie), nous travaillons sur la production et la distribution d'électricité bas-carbone, à travers le développement des énergies nucléaires et renouvelables. Nous participons également à la modernisation des réseaux électriques et l'électrification des usages, à travers l'hydrogène pour décarboner les secteurs des transports et de l'industrie.
Description du poste
Tu es passionné(e) par le marketing et tu recherches un contrat en alternance pour relever de nouveaux défis au sein d’une entreprise engagée ? Rejoins l’équipe de Mathilde, responsable marketing offres et digital du groupe Assystem !
Nos 8 000 collaborateurs, les Switchers, n’attendent que toi dès septembre 2025 !
Ta mission
Imagine-toi en chef d’orchestre de la veille marché ainsi que des contenus des différents sites web d’Assystem. Concrètement, qu’est-ce que ça veut dire ? Tu seras le relais de l’équipe Marketing Offres et Digital pour réaliser les missions suivantes :
Marketing digital :
Gestion du contenu des sites Internet (corporate et internationaux)
Gestion des campagnes LinkedIn sponsorisées et reporting
Participer à la stratégie SEO et suivi des annonces SEA avec notre prestataire
Création graphique
Marketing opérationnel :
Assurer une veille et une analyse des tendances du marché et de nos concurrents en France et à l'international (Royaume-Uni, Inde, Arabie saoudite, États-Unis et Canada)
Restitution hebdomadaire sous forme de newsletter française et anglaise
Restitution semestrielle sous forme d’une analyse globale marché/concurrents
Participer à des actions marketing transverses, en collaboration avec les autres membres de l’équipe marketing et communication, notamment dans le cadre de la création de nouveaux supports (présentations PowerPoint…) ou d’événements auxquels participe Assystem (salons…)
Les missions pourront se diversifier en fonction de tes compétences, de tes envies et de tes propositions !
« Pourquoi réaliser ton alternance chez Assystem ? On a 3 bonnes raisons pour te convaincre !
Travailler dans un environnement de travail flexible et dynamique, avec une équipe engagée et dynamique au sein de laquelle tu seras encouragé(e) pour proposer de (bonnes) idées
Gagner en compétences et développer ton expertise métier en collaborant avec de nombreux Switchers au sein d’Assystem, mais aussi avec nos prestataires et nos clients
Participer via tes missions au rayonnement et au développement d’Assystem contribuant ainsi à la réussite de notre mission principale : accélérer la transition énergétique partout dans le monde
Qualifications
Tu prépares un Master (bac +4/5) spécialisé en marketing ? Ce poste est fait pour toi si :
Tu as une première expérience en marketing dans un environnement BtoB
Tu maîtrises parfaitement le français à l'écrit (maîtrise de l’orthographe/grammaire/conjugaison) et à l'oral
Tu as un très bon niveau en anglais à l’écrit et à l’oral
Tu as un esprit d’analyse et de synthèse
Tu es doté(e) de qualités rédactionnelles
Tu es à l’aise avec les techniques multimédias et les logiciels de PAO
Tu es engagé(e), rigoureux(se), sérieux(se), et tu apprécies travailler en équipe
Tu sais faire preuve d’initiative, de proactivité et d’autonomie
Tu maîtrises Word, Excel et Power Point
La connaissance du CMS Wordpress est un plus.
Informations supplémentaires
Nous nous engageons au respect de l’égalité de traitement entre les candidats, et célébrons toutes les formes de diversité. Chez Assystem, seules les compétences comptent ! Si vous souhaitez porter à la connaissance d’Assystem une quelconque situation ou des besoins spécifiques, n’hésitez pas vous serez accompagné(e) !