Data Scientist (Moderation)

Location: Office-based in Limassol, Cyprus; relocation and a 3-year Cyprus work visa are supported.

Company

Mayflower is a technology company building high-load products used by millions of people worldwide and powering real-time entertainment for a global audience.

What you will do

• Develop, train, evaluate, deploy, and maintain machine learning models for prediction, classification, regression, clustering, and time-series tasks.
• Design feature engineering, data preprocessing, dataset validation, and data quality workflows.
• Explore large datasets, perform statistical analysis and hypothesis testing, detect anomalies, and translate product questions into analytical tasks.
• Process large datasets and streaming data with Python, SQL, Kafka, analytical databases, and data warehouses.
• Design experiments, support A/B testing, monitor model performance and data drift, and improve models using production feedback.
• Collaborate with ML engineers, data engineers, and product teams while communicating analytical insights and contributing to ML best practices.

Requirements

• Strong Python programming skills for data science and machine learning.
• Experience using Jupyter or Python notebooks for experimentation and analysis.
• Strong experience with pandas and numerical data processing.
• Experience with SQL databases and complex analytical queries.
• Experience with ClickHouse or other analytical columnar databases.
• Experience with Kafka or other streaming data platforms.
• Experience building and evaluating machine learning models with scikit-learn, XGBoost, LightGBM, or similar libraries.
• Understanding of statistics, probability, and experimental design.
• Experience working with large datasets and data preprocessing pipelines.

Nice to have

• Experience with deep learning frameworks such as PyTorch or TensorFlow.
• Experience deploying ML models to production environments.
• Experience with computer vision models, including OpenCV, CNNs, or object detection frameworks.
• Experience with distributed data processing or large-scale ML systems.
• Familiarity with ML monitoring, experiment tracking, and model versioning tools.

Culture & Benefits

• EU-based employment contract and a 3-year Cyprus work visa, with full relocation and visa-process support for the employee and family.
• Relocation package including flights to Limassol, a company-covered apartment for the first month, and relocation assistance.
• Performance reviews twice a year with bonus opportunities and salary adjustments.
• Private medical insurance, a corporate mobile plan, interest-free car-purchase support, and a Cyprus provident fund after probation.
• Psychological assistance with 50% coverage, child education fee coverage, sports benefits, and cycling and scooter benefits.
• Paid language courses, development programs, conferences, training, coaching, peer rewards, office catering, and an engineering culture with team events and hackathons.

Hiring process

• HR interview lasting 40 minutes.
• Technical interview lasting 1.5 hours.
• Final interview lasting 60 minutes.