XM

Senior Data Scientist – Graph Machine Learning

XM  •  Athens, GR (Onsite)  •  16 days ago
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Job Description

The Role:

We are looking for a Senior Data Scientist specializing in Graph AI to join our growing Data Science team. In this role, you will design and deploy production-grade graph machine learning solutions, working with Graph Neural Networks (GNNs), graph databases, and large-scale datasets to solve complex real-world problems.

You will play a key role in shaping the company's Graph AI capabilities, collaborating with cross-functional teams and mentoring other data scientists while delivering innovative, business-impacting solutions.

The main responsibilities of the position include:

  • Design, develop, and deploy Graph Neural Networks (GNNs) and graph-based machine learning solutions

  • Transform large, complex datasets into graph representations and extract actionable insights using advanced analytics, graph algorithms, and statistical techniques.

  • Drive the adoption of Graph AI across the organisation by identifying new use cases and contributing to the evolution of the company's data science strategy.

  • Communicate complex technical concepts and model outcomes clearly to both technical and business audiences.

  • Ensure high standards in data preparation, feature engineering, model evaluation, documentation, and code quality

  • Leverage technologies such as Python, Graph Neural Networks, graph databases, modern ML frameworks, and cloud-based data platforms to build innovative data solutions

  • Ensure adherence to best practices in data quality, model monitoring, version control, and reproducible analytics

  • Lead and supervise a team of data scientists working on graph-related tasks

  • Partner closely with Data Engineers, Software Engineers, Product Managers, and business stakeholders to translate business challenges into scalable Graph AI solutions.

Main requirements:

  • University degree in Mathematics, Physics, Computer Science, Engineering, Data Science, or a related quantitative field

  • At least 6 years of experience in data science, machine learning and AI, including hands-on experience in designing, training and optimising Graph Neural Networks (GNNs) for production applications.

  • Experience working with relational and non-relational databases

  • Solid experience working with graph databases (e.g., Neo4j, Neptune) and proficiency in graph query languages (e.g., Cypher or Gremlin).

  • Experience with data visualization tools such as Matplotlib, Seaborn, or Plotly

  • Strong programming skills in Python and experience with Pandas, NumPy, and similar data analysis libraries

  • Strong analytical thinking, problem-solving ability, and attention to detail

  • Excellent communication skills and the ability to work collaboratively in a team environment

  • Fluent in English

Benefit from:

  • Attractive remuneration package plus performance related reward

  • Private health insurance

  • Corporate pension fund

  • Intellectually stimulating work environment

  • Continuous personal development and international training opportunities

The Hiring Experience: What Awaits You

  • Let’s Connect – Intro Chat with Talent Acquisition

  • Deep Dive – First Interview with Your Future Team

  • Bring It to Life – Role-Specific Take-Home Task

  • Final Connection – Final Interview

All applications will be treated with strict confidentiality!

XM

About XM

🏆 At XM, we're not just another forex and CFD broker. Since our inception, we've been on a mission to redefine currency trading. Our dedication to innovation and excellence has earned us numerous awards and made us a prominent leader in the global fintech landscape.

🌎 With a diverse team of over 1,400 professionals spanning seven offices across the globe, we're united by our commitment to providing exceptional service in over 30 languages.

🚀 But what truly sets us apart is our #XMers. We don't just embrace growth, learning, and innovation – we own it. As part of the XM family, we dive headfirst into challenges, supporting each other every step of the way.

🙌 Guided by our values - Big. Fair. Human. - we have cultivated an unparalleled work environment, where every individual is nurtured for both personal and professional growth. Competitive benefits and perks that exceed market average, engaging team activities, rewarding volunteer programs, initiatives supporting the employees’ physical and mental wellbeing, and flexible work arrangements are only some of the proof points of how XM prioritizes its people’s wellbeing and work-life balance. And with a strong focus on learning and development, diversity and inclusion, and fostering a culture where everyone's voice is heard, we empower each member of our team to be a leader in their own right.

🤘 Ready to join a community that rocks and work somewhere truly awesome? ▶ xm.com/careers

Industry
Finance & Insurance
Company Size
1,001-5,000 employees
Headquarters
Limassol, CY
Year Founded
2009
Website
xm.com
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