Description:

Ravelin is a fraud detection company that utilizes advanced machine learning and network analysis technology to enhance online transaction safety.
The company values a strong culture based on empathy, ambition, unity, and integrity, and promotes work/life balance with a flat hierarchy.
The Data Scientist role is a 1-year fixed-term contract focused on training, deploying, debugging, and evaluating fraud detection models.
The ideal candidate should be pragmatic, approachable, and knowledgeable, with the ability to use judgment in ambiguous fraud cases.
Responsibilities include building model evaluation and training infrastructure, developing and deploying new fraud detection models, writing new features, researching techniques to disrupt fraud, and investigating model performance issues.
The Detection team is responsible for maintaining low fraud rates and ensuring client satisfaction through continuous model training and deployment.

Requirements:

Candidates must have experience building and deploying machine learning models using the Python data stack, including numpy, pandas, and sklearn.
A strong understanding of software engineering best practices, such as version control, unit tests, code reviews, and CI/CD, is required.
Strong analytical skills and the ability to collaborate effectively with colleagues outside of the immediate team are essential.
Candidates should be skilled at communicating complex technical ideas to diverse audiences.
The ability to prioritize tasks and manage workload effectively is necessary.
Comfort in working with a hybrid team is required.
Nice to haves include experience with Docker, Kubernetes, ML production infrastructure, TensorFlow, deep learning, dbt, and programming languages such as Go, C++, or Java.

Employees receive equity in the company, allowing them to share in the growth and success of Ravelin.
The position offers flexible working hours and a remote-first environment to enhance productivity.
Comprehensive BUPA health insurance is provided for top-tier medical care.
An annual wellness and learning budget of £1,000 is available for health and well-being initiatives.
Employees enjoy a monthly wellbeing and learning day off on the last Friday of each month.
The company offers 25 days of holiday, bank holidays, and an extra cultural day for personal time off.
Mental health support is accessible through Spill for professional assistance.
An Aviva pension scheme is available for future planning.
Ravelin encourages community involvement through monthly charitable donations and volunteer opportunities.
Fortnightly randomized team lunches foster connections among employees.
A cycle-to-work scheme is offered to promote active commuting.
Employees can access BorrowMyDoggy to spend time with dogs.
Weekly board game nights and a social budget are provided for team bonding and relaxation.