Junior HR Generalist (m/w/d)

About the company

Triathlon Group, part of the Sunlight Group, is an international provider of battery systems, chargers, and energy management solutions for industrial use. With more than 1,600 employees across three continents, the company supports industrial customers—especially in intralogistics—through innovative products based on lead-acid and lithium-ion technology, backed by a strong service mindset that helps keep operations running smoothly and efficiently.

The organization places strong emphasis on teamwork, personal growth, and a respectful culture where ideas and initiative are welcome regardless of role or tenure. Agile ways of working, learning opportunities, and an inclusive, equal environment are key parts of the workplace. Together with Sunlight Group, Triathlon is among the fastest-growing global players in the energy storage market, with more than 3,800 employees overall.

Employment details

This is a fixed-term position for 1 year.

Role overview

In this role, you will handle day-to-day HR administration across the employee lifecycle and support both employees and managers with operational personnel matters. You will work closely with payroll, maintain HR data and records, and contribute to HR projects, recruiting activities, and process improvements.

Responsibilities

• Independently manage employee joining and leaving processes, including ongoing refinement of onboarding and offboarding workflows.
• Handle the full range of administrative HR tasks across the employee lifecycle, such as preparing employment contracts, contract amendments, references, and certificates.
• Maintain personnel files and HR systems, with responsibility for document control and data accuracy.
• Work closely with payroll, including preparatory payroll tasks and coordination with external service providers.
• Serve as a point of contact for employees and managers on routine HR matters and ensure compliance with labour law requirements.
• Support HR projects, recruitment activities, and the further development of HR processes and policies.

Requirements

• A completed degree with a focus on business administration or human resources, or a comparable commercial qualification with relevant additional training.
• Ideally, some initial professional experience in a similar role.
• Solid knowledge of labour law and social insurance law, as well as handling occupational pension arrangements.
• A strong sense of accuracy, care, and reliability.
• Good working knowledge of MS Office applications.
• Very good German skills and good English skills.

Benefits

• Stable employment in a growing international company with strong development prospects in a future-oriented industry, including lithium-ion battery business.
• A varied and engaging role within a friendly, cooperative team.
• Flexible working hours and the option to work remotely on a mobile basis.
• Strong opportunities for professional development.
• Employee benefits such as Business Bike, including leasing for two bicycles.
• Company pension provision.
• Capital-forming benefits.