Head of HR (30-32h/week) (f/m/d)

We are convinced that in our world of digital trading, great products also require great presentation – to be able to successfully assert themselves in competition. This challenge is solved by CELUM with its unique Content Supply Chain Platform, which allows marketing and product teams to quickly and effectively create convincing product experiences, release them, manage them, and use them in every channel.

After years of rapid growth and organizational changes, we are entering a decisive phase:

CELUM is driving forward a new corporate culture that is based on clarity, responsibility, and high performance. We want to reduce complexity, strengthen leadership, lower turnover, and create an environment in which great people can be successful and deliver measurable impact.

To shape this transformation, we are looking for an experienced HR leadership personality who will form, challenge, and elevate the entire organization to a new level.

As Head of HR, you will be the strategic architect: you will drive CELUM's change towards a true high-performance organization. You will be part of the Management Team, reporting directly to the CFO, and working closely with CEO, CPO, and CGO to create the cultural, structural, and leadership foundations for CELUM's next chapter.

You will lead and develop our three-person HR team and focus on organizational-wide impact: reducing turnover, resolving cultural friction, improving leadership quality, and establishing strong, scalable people systems.

This is a part-time leadership role (30–32h/week) with significant strategic influence.

Tasks

Promote a culture change towards high performance

• You will drive the change towards a new CELUM culture that is based on ownership, accountability, and clarity.

• You will diagnose and address themes regarding corporate culture that contribute to friction or unwanted turnover.

• You will establish consistent leadership behaviors and standards throughout the entire organization.

• You will foster a culture in which healthy performance, transparency, and cooperation thrive.

Build and implement scalable performance systems

• You will develop and implement a modern performance management and continuous feedback system.

• You will introduce goal-setting structures, leadership principles, and organizational routines that support excellence.

• You will align HR processes with CELUM's claim to operate as a high-performance organization.

Strategic partner of the Management Team

• You will act as a trusted advisor for CEO, CFO, CPO, and CGO on organizational strategy and people topics.

• You will provide honest, evidence-based insights and constructively challenge the status quo when necessary.

• You will support strategic workforce planning, restructuring, and scale-up initiatives.

Leadership Development & Organizational Design

• You will coach leaders in conflicts, performance topics, communication challenges, and team dynamics.

• You will strengthen organizational structures, clarify roles, and improve interdepartmental interfaces.

• You will moderate leadership workshops, team interventions, and culture-shaping initiatives.

Lead and strengthen the HR Team

• You will give the HR Team direction through guidance, coaching, and clear prioritization.

• You will ensure operational excellence in recruiting and people operations.

• You will guarantee compliance with Austrian labor law and high professional HR standards.

Requirements

• 7+ years of HR experience, including leadership responsibility

• Demonstrable success in culture transformation, organizational development, and leadership development

• Experience in building and rebuilding organizations to high-performance environments (ideally Tech/SaaS)

• Strong coaching skills and the confidence to constructively challenge senior leaders

• In-depth knowledge of Austrian labor law

• Very good German and English language skills (C1)

• High resilience, structured thinking, and the ability to handle ambiguity

• Hands-on, pragmatic approach with high integrity and organizational maturity

• Passion for creating an environment in which people can perform, grow, and stay

Benefits

• Annual salary of at least EUR 70,000 for this part-time leadership role, dependent on experience and seniority

• Yearly allowance of up to EUR 461 for public transportation (Vienna's public transport system, Linz AG, ÖBB etc.) so that your commute is environmentally friendly and uncomplicated

• Join our office in the heart of Vienna with excellent connections to public transportation (U1 and U4)

• Use our pool cars and e-scooters also for private purposes

• Maintain your fitness and have fun with our comprehensive fitness offerings and monthly yoga sessions

• Experience a flexible work environment with a fixed workspace and up to 3 days of home office (Tuesday and Wednesday are our presence days)

• Become part of the CELUMian community, where we support each other and celebrate on regular events or our Workation

• Bring your sense of humor! We have fun :-) most of the time… at least a little bit… no, seriously, we're funny. Ehrenwort!