Are you ready to change the market?

Are you a passionate and experienced Data Scientist, excited to work on improving and maintaining our data architecture? Join us to become a part of our strong international team that is transforming the traditional debt collection industry with innovation and a drive for excellence.

Your Responsibilities:

be part of our Data Science team to further optimize our innovative product based on machine learning and artificial intelligence
work on advanced and demanding AI fields such as large language models
identify, understand, structure and solve complex problems in a driven and pragmatic manner
work on projects that deliver measurable value to our business
experiment with new technologies and acquire new skills to find clever solutions to the unique challenges we will encounter along the way
communicate between all stakeholders (data scientists, lead developers, product management, business owners) and present technical product concepts

What we're looking for:

degree in Data Science, Computer Science, Mathematics or similar
6+ years experience as Data Scientist, ideally in a startup or fintech company
extensive and hands-on experience with deployment of (ideally open source) LLMs (hosting, fine-tuning, prompt engineering, evaluation)
experience automating complex processes using LLMs, reducing system latency, increasing efficiency, etc.
deep knowledge of server management, GPU orchestration, and computational optimization techniques
extensive experience with Python and with data processing packages (e.g. Pandas, Numpy) and machine
learning frameworks (e.g. pytorch, scikit-learn, transformers)
familiarity with web frameworks like Flask or FastAPI
deep knowledge of relational databases such as MySQL or PostgreSQL
experience with agile development practices such as TDD/BDD, continuous integration, refactoring, code reviews, etc.
experience with cloud-based infrastructure solutions, such as AWS
experience with reinforcement learning is a strong plus
excellent English speaking and writing skills

Transparency, Execution, Ownership, Customer Centricity, Innovation and Integrity are important to us and we at PAIR Finance embody these values. Do you find yourself in these values? Then become part of our team and complement us with your individual motivation and character!

Our offer for you:

For this senior role, our salary band is €76,000 - €103,500 gross per year (based on a 40-hour work week). The exact offer will reflect your experience and qualifications
We offer visa sponsorship
Thriving, financially stable company
Strong experienced international team to support and mentor you along the way, smooth onboarding process
International team of 30+ nationalities with professionals and experts
Flat hierarchy, transparent and appreciative feedback culture, monthly all hands meetings, annual feedback and evaluation cycle, regular 1-on-1s with your lead
Well-structured onboarding process as well as supportive and welcoming colleagues
Personal learning & development budget as well as German and English language courses
Unlimited employment contract, flexible working hours and 28 vacation days for your work-life balance
Company pension plan, partly covered Deutschlandticket (public transport) and access to “Corporate Benefits” voucher platform to ensure your full well-being
Fun company summer and Christmas parties as well as regular team events
This role is based in Berlin , and we have a hybrid working policy. Modern office near Uhlandstraße is complete with fresh fruit, muesli and drinks for a comfortable and enjoyable workplace

Who is your contact person?

Your contact person for this position is . If you have any questions, please contact us directly by email (jobs@pairfinance.com). For more information about PAIR Finance, please take a look at our website and our careers page . We look forward to hearing from you!

About us

We are rethinking debt collection with our digital debt collection solution, characterized by our high customer orientation and efficiency standards. By using artificial intelligence, we are combining technology with behavioral science and so we are able to contact customers individually and in a simple way throughout the entire collection process.

Strengthened by one of the most renowned private equity firms in the fintech sector, Pollen Street, as well as partnerships with other investors such as Zalando Payments, PAIR Finance offers an excellent opportunity to dive deep into and actively shape the fintech industry.

PAIR Finance is an equal-opportunity employer. We value a diverse team and an inclusive culture. We welcome applications from all qualified individuals regardless of ethnicity, color, religion, gender, sexual orientation, gender identity or expression, age, national origin, marital status, or disability.

For more information about PAIR Finance, visit and and

Do you want to find out more about PAIR Finance and the position? We are happy to answer your questions and also to receive your application!

Senior Data Scientist (f/m/d)

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