HR Admin, Payroll & CPO Assistant (F/M/D) 70%

Facing the challenges of our time - Help us grow and be more impactful!

Our HR department is recruiting a new team member.

Your mission

• Provide reliable and service-oriented HR administrative support focused on activities that cannot be handled through the HRIS self-service environment
• Ensure accurate monthly payroll processing, and deliver high-quality executive assistance to the CPO. The role contributes to smooth HR operations, data quality, compliance, and effective coordination of HR Administration activities.
• Ensure the accuracy, completeness, and timely execution of HR administrative activities that remain outside HRIS self-service, payroll input processing, and executive support tasks.
• Maintain high-quality employee data, documentation, and records in HR systems and files, especially for sensitive or salary-impacting changes requiring HR validation.
• Provide reliable coordination and follow-up for CPO priorities, meetings, and communications, ensuring professionalism, discretion, and responsiveness.
• Support efficient HR service delivery and contribute to process reliability, user satisfaction, and operational continuity.

Your responsibilities

HR Administration (40%):

• Manage HR administrative activities that cannot be handled through the HRIS self-service environment, ensuring accuracy, compliance, and timely follow-up
• Handle administrative processes such as work permit requests, work certificates, accident insurance case declarations, and other employee data changes with salary impact that employees cannot update themselves
• Organize and coordinate Welcome activities for new employees and ensure the corresponding administrative follow-up linked to onboarding

Monthly Payroll Processing (10%):

• Prepare and input monthly salary data and payroll variables
• Verify completeness and accuracy of payroll inputs
• Support payroll payment preparation and employee payroll-related communications

CPO Assistant (20%):

• Provide proactive executive support to the CPO, including agenda coordination, meeting preparation, document formatting, follow-up of action points, communication support, and handling sensitive information with discretion
• Contribute to the quality, accuracy, confidentiality, and continuous improvement of HR operations, data, and administrative support tools and projects

Your profile

Know-how

• HR administration certification, Brevet Fédéral is a strong advantage
• Proven experience in HR administration (in an HRIS-enabled environment) and payroll support required
• Experience supporting a senior executive is a strong asset
• Ability to handle sensitive and salary impacting employee data
• Proven experience in Payroll data processing
• Strong expertise in Insurance case administration
• Onboarding coordination
• Strong command of Microsoft Office tools
• Fluent in French and in English required; German is a plus

Interpersonnal skills

• Strong work ethics, confidentiality & discretion handling
• Proactivity & ability to work autonomously
• Organized and structured way of working
• Attention to detail
• Positive and Solution-oriented mindset

CSEM mission and values

We believe in a future that is imagined, shared, and created TOGETHER.

At CSEM, we don’t just innovate, we envision technologies that shape tomorrow.

Since 1984, our purpose has remained constant: to harness science and technology for the benefit of society. Today, with over 650 people across Switzerland, we remain committed to our mission: to develop and transfer world-class solutions in digital technologies, precision manufacturing, and sustainable energy systems. In doing so, we empower Swiss industry to innovate and remain competitive.

Our strength is the excellence of our people. We believe that strong values support the successful development of our organization as well as the harmonious and balanced development of all our employees.

We are

• A unique place between research and industry at the cutting edge of new technologies
• An innovative, non-profit, and employee-driven company
• A dynamic, multidisciplinary, and multicultural environment
• A solar team focused on enabling solutions to energy challenges for a sustainable world

Working@CSEM means

• Being part of a passionate community.
• Flexibility, attractive working conditions, and opportunities of development.
• Benefit from a management style based on trust & feedback and that favors a work-life balance.

We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity.
We look forward to receiving your complete application file via (CV, cover letter, certificates & diplomas) our job page. Preference will be given to professionals applying directly.