Data Scientist

Mayflower is a technology company building highload products used by millions of people worldwide. Operating at the scale of one of the world's top-50 websites, we solve complex engineering challenges and create solutions that power real-time entertainment for a global audience.

Now we look for a Data Scientist to join our ML team

Job Responsibilities

• Machine Learning & Modeling

  • Develop and train machine learning models for prediction, classification.
  • Build and evaluate regression, classification, clustering, and time-series models.
  • Design feature engineering pipelines and data preprocessing workflows.
  • Evaluate model performance, robustness, and production readiness.
  • Deploy and maintain ML models in collaboration with ml-ops teams.

• Data Analysis & Exploration

  • Explore large datasets to identify patterns, trends, and hidden relationships.
  • Perform statistical analysis and hypothesis testing.
  • Distillate open-source datasets by proprietary data via LLM agents
  • Detect anomalies, outliers, and unexpected metric movements.
  • Translate business or product questions into analytical tasks.

• Data Pipelines & Infrastructure

  • Work with data pipelines and streaming data systems.
  • Process and transform large datasets using Python and SQL.
  • Work with event streams and messaging systems (Kafka).
  • Contribute to data quality monitoring and dataset validation.
  • Work with analytical databases and data warehouses.

• Model Monitoring & Experimentation

  • Design experiments and evaluate model performance in real environments.
  • Implement monitoring for model performance and data drift.
  • Support A/B testing and experimentation frameworks.
  • Improve models based on production feedback and metrics.

• Cross‑Functional Collaboration

  • Work closely with ML engineers, data engineers, and product teams.
  • Communicate model results and analytical insights clearly.
  • Contribute to the development of ML best practices within the team

You’ll thrive here if you have

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

That can be a plus:

• Experience with deep learning frameworks (PyTorch or TensorFlow).
• Experience deploying ML models to production environments.
• Experience working with Computer Vision models (OpenCV, CNNs, object detection frameworks).
• Experience with distributed data processing or large-scale ML systems.
• Familiarity with ML monitoring, experiment tracking, and model versioning tools.

Conditions

We know that great talent deserves great conditions, so here's what you can expect when joining us:

• EU-based employment contract and a 3-year Cyprus work visa with full support for your relocation and visa processes, including assistance for your family.
• Full relocation package: flights to Limassol for you and your family, a company-covered apartment for the first month, and full relocation support to make your move smooth and hassle-free.
• Transparent performance reviews twice a year, with bonus opportunities and salary adjustments.
• Private medical insurance for you and your family, a corporate mobile plan (unlimited in Cyprus with roaming included), and interest-free support for car purchases.
• Mindfulness & well-being support, including psychological assistance with 50% coverage.
• 50% coverage of school and kindergarten fees for your children.
• Fully covered sports benefits, and also access to in-house electric scooters and bike rentals, and cycling purchase compensation.
• Investment in your growth: paid language courses and access to suited-for-you development programs, including conferences, training programs, and coaching to support your professional journey.
• A culture of recognition: a peer reward program to celebrate your contributions.
• A fully equipped office in Limassol’s city center, with everything you need for deep work and collaboration.
• Free catering in the office and an in-house coffee bar with high-quality drinks and a health bar stocked with nutritious snacks.
• A strong engineering culture: international teams, corporate events, team buildings, and hackathons—because great work happens in great communities.

Recruitment process

• HR interview (40 min);
• Technical interview (1.5 hour);
• Final interview (45 min).