Senior Data Scientist

2 weeks ago

Glyfada, Attica, Greece Validata Group Full time €45,000 - €90,000 per year

We are expanding our team and are currently looking for Senior Python Developers / Data Scientists to work on a range of innovative tools that help banks automate their business processes and make data-driven decisions.

In this role, you will design, develop, and deploy high-quality Python-based solutions — from backend services and APIs to machine learning models. You will collaborate closely with cross-functional teams to solve complex problems, optimize performance, and deliver scalable, intelligent applications.

Responsibilities
  • Write clean, efficient, and testable Python code.
  • Design and implement scalable server-side logic and APIs.
  • Develop and integrate data-driven applications, including machine learning components.
  • Debug and maintain existing software, ensuring reliability and performance.
  • Collaborate with software engineers, data scientists, and analysts to develop new features.
  • Integrate applications with third-party web services and APIs.
Requirements
  • Solid experience as a Python Developer and/or Data Scientist.
  • Expertise in at least one popular Python framework (Flask, Django, or FastAPI).
  • Strong understanding of databases and SQL.
  • Familiarity with Cloud environments and REST APIs.
  • Experience with machine learning algorithms, especially in supervised learning (e.g. KNN, Decision Trees, SVM, LightFM).
  • Proficiency with data manipulation and analysis libraries (NumPy, pandas, scikit-learn).
  • Knowledge of data visualization tools (Matplotlib, Seaborn, or Plotly) is a plus.
  • Knowledge of JavaScript and the AngularJS framework is an advantage.
  • Understanding of object-relational mapping (ORM).
  • Degree in Computer Science, Engineering, Data Science, or a related field.
  • Awareness of multi-tenant systems, secure coding practices, and authentication/authorization.
  • Familiarity with front-end technologies is a plus.
Benefits
  • Highly competitive salary and comprehensive benefits package.
  • Flexible working model – remote, onsite, or hybrid.
  • Long-term, challenging projects in the banking and financial technology sector.
  • Creative work environment with Agile methodology.
  • Free drinks, coffee, and snacks.
  • Paid holidays and vacation time.
  • Excellent career growth and professional development opportunities.
  • Friendly, collaborative team with strong team spirit.

If this sounds interesting and you think we might "click", please send your CV to -, quoting 'PD1125' in the subject line.

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