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At Wikimedia Deutschland e.V. we help create, collect and distribute free knowledge. 

In 2004, volunteer Wikipedia activists founded the non-profit association Wikimedia Deutschland in Berlin, which now consists of over 100,000 members and 160 full-time staff.

Free knowledge leads to a fairer world. Wikipedia is the most important online knowledge collection of our time. The German Wikipedia alone records almost 1 billion page views per month for a total of 2.6 million articles. We - Wikimedia Deutschland e. V. - support the volunteers of Wikipedia and its sister projects, develop free software, such as Wikidata, and advocate for free access to knowledge, the opening of education and research, and more common good orientation in data policy.

For our team Software Engineering,, based in Berlin, we are looking for a permanent Senior Software Engineer (m/f/d), full-time or part-time (min. 30h/week), as soon as possible.

About the position & the team:

Wikidata for Wikimedia Projects wants to provide structured data support that is collaborative, verifiable, and multilingual to other Wikis in the Wikimedia movement. You will be developing open source software that puts user needs first and increases our users’ satisfaction.

At Wikimedia Deutschland – with volunteers and institutions – we work towards a future in which people share the power to collect and organise the data that shapes humanity's understanding of the world.


What you’ll be doing:

  • Improve and maintain the Wikidata integrations in other Wikimedia projects, according to users’ needs
  • Write readable, testable, sustainable, and efficient code
  • Participate in all the stages of software development including code, design, and architectural reviews providing constructive feedback
  • Be responsible for and present in all stages of the engineering work: 
    • identifying and making technical issues visible, 
    • considering different approaches and selecting the most appropriate solution together with the team, 
    • outlining the required steps and implementing them
  • Be responsible for the technical direction of the team
  • Understand and discuss mid- and long-term implications of architectural resolutions and be able to communicate the impact of engineering decisions on our products.
  • Maintain a good understanding of the technical aspects of the product roadmap as well as the team goals
  • Work with managers and technical leads to ensure engineering effort is focused on the most impactful areas for their team
  • Support the professional growth of other engineers together with engineering managers and technical leads
  • Engage in constantly improving the team processes and agile practices.

What we offer:

  • A participative collaboration guided by our values: participation, diversity, free and open access, equity, sustainability and respectful collaboration
  • Benefits: 30 vacation days (25 for working students) and additional time off on Dec. 24th and New Year's Eve, access to our company pension scheme allowance, continued salary in the event of sick children
  • € 500 gross one-off payment for home office equipment
  • € 300 gross per year (€ 25 per month) Allowance for running costs in the home office
  • All overtime is recorded and converted into compensatory time off
  • An office located in the center of Berlin and hybrid work options
  • WorkingAbroad@WMDE up to 4 weeks per year 
  • In-house training and continued professional development as well as free external life coaching (professional advice and coaching on job-related and private issues)

What makes you right for this role:

  • You are passionate and care about software
  • You have some relevant - not necessarily professional - experience in web development.
  • You want to keep learning and developing yourself
  • You are not afraid of making mistakes and you learn from them
  • You have experience in being part of a multidisciplinary team, working towards a common goal, learning together, and supporting each other
  • You like to participate in technical discussions and are open to new ideas
  • You are able to communicate in English at a professional capacity


Then apply now! Send us your detailed application documents (Resume & Motivational Letter (yes, we read them)) via our job portal. We kindly ask you to refrain from application photos and information on date of birth, marital status and parents. 

Our HR team will be happy to answer your questions. Please contact us via 

Wikimedia Germany is committed to equal opportunities and does not discriminate on the basis of, for example, ethnic origin, citizenship, religion or belief, political or other convictions, gender, age, disability, or sexual identity or orientation.