[Hiring] Junior Data Scientist @Ravelin Technology

Role Description

We are currently looking for a Data Scientist to help train, deploy, debug and evaluate our fraud detection models. Our ideal candidate is pragmatic, approachable and filled with knowledge tempered by past failures.

• Evaluating fraud models is hard; often times we do not even get labels for 3 months.
• You’ll need to use your judgement when investigating cases of ambiguous fraud and when you’re investigating the veracity of the model itself.
• We have to build robust models that are capable of updating their beliefs when they encounter new methods of fraud: our clients expect us to be one step ahead of fraud, not behind.
• You will be given the equipment, space and guidance you need to build world class fraud detection models.
• The work is not all green field research; the everyday work is about making safe incremental progress towards better models for our clients.
• The ideal candidate is willing to get involved in both aspects of the job – and understand why both are important.

Qualifications

• Around 1 year's experience building and deploying ML models using the Python data stack (numpy, pandas, sklearn or pytorch).
• Strong analytical skills.
• Being a strong collaborator with colleagues outside of your immediate team, for example with client support teams or engineering.
• Being skilled at communicating complex technical ideas to a range of audiences.
• The ability to prioritise and to manage your workload.
• Being comfortable working with a hybrid team.

Requirements

• Build out our model evaluation and training infrastructure.
• Develop and deploy new models to detect fraud whilst maintaining SLAs.
• Write new features in our production infrastructure.
• Research new techniques to disrupt fraudulent behaviour.
• Investigate model performance issues (using your experience of debugging models).

Benefits

• Flexible Working Hours & Remote-First Environment — Work when and where you’re most productive, with flexibility and support.
• Comprehensive BUPA Health Insurance — Stay covered with top-tier medical care for your peace of mind.
• £1,000 Annual Wellness and Learning Budget — Prioritise your health, well-being and learning needs with funds for fitness, mental health, and more.
• Monthly Wellbeing and Learning Day — Take every last Friday of the month off to recharge or learn something new, up to you.
• 25 Days Holiday + Bank Holidays + 1 Extra Cultural Day — Enjoy generous time off to rest, travel, or celebrate what matters to you.
• Mental Health Support via Spill — Access professional mental health services when you need them.
• Aviva Pension Scheme — Plan for the future with our pension program.
• Ravelin Gives Back — Join monthly charitable donations and volunteer opportunities to make a positive impact.
• Fortnightly Randomised Team Lunches — Connect with teammates from across the company over in person or remote lunches every other week on us!
• Cycle-to-Work Scheme — Save on commuting costs while staying active.
• BorrowMyDoggy Access — Love dogs? Spend time with a furry friend through this unique perk.
• Weekly Board Game Nights & Social Budget — Unwind with weekly board games or plan your own socials, supported by a company budget.