Job Description

Threema is the world's best-selling secure messenger for both private users and businesses. Since 2012, we have been working tirelessly to ensure that our users can communicate freely without worrying about their privacy. Our growing user base includes millions of private customers and thousands of businesses and organizations from all over the world.


Due to our strong growth, we are looking for a

Management Assistant - HR, Finance & Office (80%) (m/f/x)

Are you a real organisational talent, do you think proactively and keep track of things even in a dynamic everyday environment? Do you enjoy working closely with management, appreciate a varied role with responsibility, and are not above taking care of organisational matters? Then we look forward to getting to know you.

Your role

In this responsible and varied position, you will directly support the management team and at the same time be an important point of contact for smooth office organisation. You will also assist our Head of HR and Head of Finance with administrative tasks. You will provide structure, relieve the burden of day-to-day business and actively contribute to professional processes and a positive corporate culture.

Your responsibilities

Assisting the management

Independently organising and coordinating appointments, meetings and business trips Preparing and following up on meetings, including taking minutes and tracking tasks Creating presentations, reports and decision-making bases Confidential correspondence and acting as an interface between the CEO, managers and external partners

Office organisation & administration

Ensuring efficient day-to-day office operations and acting as a point of contact for internal organisational issues Coordinating external service providers (e.g. office services, IT, suppliers) Managing contracts, documents and filing systems Supporting internal processes and special organisational tasks Planning and organising team events

Finance & HR assistance

Supporting the Head of Finance with monthly financial statements Supporting the recruitment process (correspondence with applicants, scheduling appointments) Maintaining personnel files and HR data Supporting the onboarding of new employees Participating in HR projects and administrative personnel processes

Your skills

Completed commercial training, degree or comparable qualification Several years of experience in assistance, office management or HR would be an advantage Very good organisational skills and a structured, independent way of working High degree of discretion, reliability and sense of responsibility Strong communication skills, professional manner and strong service orientation Confident use of MS Office (Word, Excel, PowerPoint); experience with HR tools is an advantage Very good written and spoken German, good English skills

What We Offer

A young and motivated team with flat hierarchies and straightforward communication Opportunity to work on many different projects and improve and define processes Work-life balance: flexible working hours and the option to work from home two days a week Option to work from anywhere for two weeks per year Opportunity to take unpaid leave You can choose your own hardware (macOS or Linux) Public transport discount or access to free parking A fitness room and a table tennis table Internal German or English courses A great coffee machine :-) Regular events and drinks receptions The good feeling of contributing to the effective protection of the privacy of millions of people

Place of work:

Pfaffikon SZ (Greater Zurich Area) / hybrid

Start date

: Immediately or by agreement



Does this sound like your next challenge? Then we look forward to receiving your detailed application with your CV and relevant documents. We welcome applications from all genders and backgrounds.