Change Manager
About the job
- A Bac+5 qualification from an engineering school, business school, or a Master's degree in project management, digital transformation, or an equivalent qualification.
- Significant experience in project management, change management, or supporting transformation projects.
- Experience coordinating multiple stakeholders in complex environments.
- Proficiency in project management methodologies and associated project-monitoring tools.
- Experience with testing, qualification, or data-migration activities.
- Ability to facilitate workshops, training sessions, and steering meetings.
- Strong analytical, organizational, and synthesis skills.
- Autonomy, rigor, and strong interpersonal skills.
- Ability to work in a team and interact with business, functional, and technical stakeholders.
- Participate in coordinating transformation projects and monitoring the various stakeholders.
- Organize and facilitate project follow-up meetings and workshops with business and technical teams.
- Monitor schedules, budgets, and progress indicators.
- Produce reports and consolidate information needed for decision-making.
- Contribute to preparing project milestones and securing deliverables.
- Define and implement functional and business acceptance-testing strategies.
- Coordinate testing campaigns and manage anomaly tracking through resolution.
- Prepare and support data-migration operations.
- Participate in qualifying and ensuring the reliability of data before integration.
- Monitor migrations and ensure smooth cutovers to new tools.
- Support users in adopting new solutions and processes.
- Define and deploy the change-management strategy in line with project objectives.
- Design and write training and communication materials.
- Lead or co-lead training sessions for users and key stakeholders.
- Support teams during project preparation, deployment, and stabilization phases.
- Provide local support during production-release phases.
- Collect user feedback and propose continuous-improvement actions.
About the company
Assystem provides engineering services for complex projects, covering design, construction, supervision, commissioning, and operation, with a strong focus on the nuclear and energy sectors. Its approach combines multidisciplinary engineering teams and project-management capabilities to move projects from initial concept through to operation. The company differentiates itself through a long track record, strategic acquisitions (including Alphatem in 1995 and Mactech Energy Group in 2025) and an early public offering in 2013, which have expanded its capabilities and market reach in the energy and nuclear fields. Its goal is to be a leading, reliable partner for clients by delivering end-to-end engineering services and helping them meet safety, performance, and regulatory requirements across the project lifecycle.
Company Size
5,001-10,000
Company Stage
IPO
Headquarters
Paris, France
Founded
1966
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Simplify's Take
What believers are saying
- H1 2026 revenue grew 2.5% organically; nuclear grew 8.0%.
- France delivered 4.2% organic growth on new-builds, fuel cycle, and digitalisation.
- UK momentum accelerated after April 2026 SMR, CPS2, and MoD framework wins.
What critics are saying
- Nuclear concentration leaves Assystem exposed if French EPR2 schedules slip beyond 2027.
- H1 2026 international revenue fell from currency hits and project endings in India.
- Rolls-Royce SMR still needs FID, regulatory clearance, and site decisions before revenue scales.
What makes ASSYSTEM unique
- Assystem derived 81% of H1 2026 revenue from nuclear engineering.
- April 2026 UK wins placed Assystem on CPS2 and MoD delivery frameworks.
- January 2025 Mactech Energy Group deepened Assystem's UK nuclear construction capabilities.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
Unlimited Paid Time Off
Flexible Work Hours
Remote Work Options
Paid Vacation
Paid Holidays
Hybrid Work Options
401(k) Retirement Plan
Wellness Program
Mental Health Support
Gym Membership
Professional Development Budget
Conference Attendance Budget
Stock Options
Company Equity
Phone/Internet Stipend
Home Office Stipend
Relocation Assistance
Childcare Support
Meal Benefits
Parental Leave
Family Planning Benefits
Fertility Treatment Support
Company News
Assystem reported consolidated revenue of €328.5 million for the first half of 2026, representing organic growth of 2.5% despite a 1.9% negative currency effect. The French engineering group's nuclear activities drove performance with 8.0% organic growth, accounting for 81% of total revenue. Revenue in France rose 4.2% organically to €201.1 million, led by strong momentum in nuclear new-builds and fuel cycle activities. International operations generated €127.4 million, remaining stable organically despite currency headwinds from the pound sterling, Indian rupee, and Saudi riyal. The UK showed robust growth in civil nuclear engineering and defence. However, business volumes declined in the Middle East, Central Asia region and India due to project endings and slower contract phasing. Assystem confirmed its full-year 2026 targets.
Assystem, an international engineering group, reported first-quarter 2026 consolidated revenue of €165.8 million, representing 2.2% organic growth driven by strong nuclear sector performance of 8.0%. Nuclear activities accounted for 81% of total revenue, up from 76% in the prior year. French operations grew 4.4% to €102.6 million, driven by momentum in fuel cycle activities, new-builds and digitalisation. International revenue declined 7.1% to €63.2 million, primarily due to a 6.0% negative currency effect from the pound sterling, Indian rupee and Saudi riyal. The UK showed robust growth in civil nuclear engineering and defence. Assystem secured key positions on government frameworks and its client Rolls-Royce SMR signed a contract with Great British Energy for three small modular reactors.
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