JOB DETAILS
Senior Data Scientist (f/m/d)
CompanyPAIR Finance
LocationBerlin
Work ModeOn Site
PostedJuly 8, 2026
About The Company
PAIR Finance is a leading fintech for digital debt collection and receivables management. The company is transforming the debt collection industry with its sustainable, digital, efficient, and customer-centric approach. Using artificial intelligence, behavioural psychology and data science, PAIR Finance is setting a new standard in debt collection that supports businesses and consumers alike. More than 600 companies from a wide range of industries are already successfully working with the debt collection solution for the digital age. Founded in Berlin in 2016, the fast-growing company has a renowned private equity investor at its side in Pollen Street. PAIR Finance has more than 250 experienced employees (FTE) in its offices in Berlin, Vienna, Amsterdam, Zurich, Stockholm, Warsaw and Milan and is led by founder and CEO Stephan Stricker.
We are continuously looking for exceptional talents across our organisation. Please check out our career page pairfinance.com/en/careers/.
Legal Notice:
https://pairfinance.com/impressum/
Data Protection:
https://pairfinance.com/datenschutz/
About the Role
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
Our offer for you:
- 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 Geneva Brooks. 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 www.pairfinance.com/ and www.pairfinance.com/karriere/ and www.trustpilot.com/review/www.pairfinance.com
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!
Key Skills
Large Language ModelsPythonPyTorchScikit-learnTransformersPandasNumpyFlaskFastAPIMySQLPostgreSQLAWSGPU OrchestrationReinforcement LearningTDD/BDDPrompt Engineering
Categories
Data & AnalyticsTechnologySoftwareFinance & AccountingScience & Research
Benefits
Visa SponsorshipPersonal Learning & Development BudgetGerman and English Language CoursesUnlimited Employment ContractFlexible Working Hours28 Vacation DaysCompany Pension PlanPartly Covered DeutschlandticketCorporate Benefits Voucher PlatformCompany Summer and Christmas PartiesRegular Team EventsFresh Fruit, Muesli and Drinks in Office
Job Information
📋Core Responsibilities
Optimize innovative products using machine learning and artificial intelligence, specifically focusing on large language models. Collaborate with stakeholders to solve complex problems and deliver measurable business value through technical product concepts.
📋Job Type
permanent employee
📊Experience Level
5-10
💼Company Size
248
📊Visa Sponsorship
Yes
💼Language
English
🏢Working Hours
40 hours
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