# Senior ML Engineer/Data Scientist

> FINARTIX Fintech Solutions S.A. · Athens, Greece (Hybrid) · Full-time · Posted 2026-05-19

**Workplace:** hybrid

**Department:** Data Science & Machine Learning

## Description

We are currently looking for a passionate and motivated ML Engineers/Data Scientists to join our team of ΙΤ professionals on behalf of our clients in different industries within the Greek market. The candidate will play a key role in the development, implementation, and management of technology-based solutions to improve our clients’ data ecosystem and overall delivery.

**Responsibilities**

-   Participate in full software development lifecycle implementing, testing and maintaining custom data solutions
-   Design, develop, and deploy machine learning models, with a strong emphasis on LLMs for diverse NLP applications.
-   Lead the fine-tuning of pre-trained LLMs for specific downstream tasks, optimizing for performance and domain relevance.
-   Implement and explore model quantization techniques to reduce model size and inference latency, enabling efficient deployment on various hardware.
-   Conduct thorough experimentation and evaluation of model performance, ensuring robustness and accuracy.
-   Collaborate with data scientists and software engineers to integrate ML models into production systems and MLOps pipelines.
-   Act as a technical consultant for the client
-   Work as a key member of an Agile Team

## Requirements

-   BS/MS degree in Computer Science, Engineering or related field (mandatory)
-   Minimum of 5 years of relevant experience on Data Science or Machine Learning roles using Python and Python Libraries (PySpark, Numpy, Scikit-Learn etc.)[](https://www.google.com/search?sca_esv=02c44965d6d4b280&sca_upv=1&rlz=1C5CHFA_enGR1052GR1052&sxsrf=ADLYWIJ97nLL9OE_Hd7Mn69HjQcMrg2jzg:1727256145943&q=pyspark,+numpy,+scikit+learn&spell=1&sa=X&ved=2ahUKEwih9Y7I4t2IAxWr8bsIHWO1C-IQkeECKAB6BAgNEAE) & LLM domains
-   Strong skills working with algorithms, computational complexity, statistics and ML/AI techniques
-   Experience in working with large datasets (SQL/NoSQL)
-   Familiarity with cloud technologies, ideally the Azure environment and Databricks
-   Experience on Airflow will be considered as a plus
-   Understanding of software applications' fundamental principles, communication methods, and their impact on users’ experience
-   Very Good Testing & Quality Assurance skills
-   Good programming skills with a mindset of solving hard problems efficiently with creativity
-   Communication & Time Management Skills
-   Able to work independently and as part of a group
-   Analytical thinking & Problem-Solving Attitude
-   Knowledge of Microsoft Office
-   Languages required: English and Greek, both written and verbal

## Benefits

-   Professional development through participation in challenging, real business projects in different industries.
-   Working in a dynamic and fast-growing Technology Company with recognized partners.
-   Opportunity to work in a diverse environment with talented colleagues.
-   Competitive remuneration package.
-   Private Health Insurance.
-   Training & Development.
-   Flexible Working Environment.

## Apply

[Apply at FINARTIX Fintech Solutions S.A.](https://apply.workable.com/finartix/j/F8CE0588D7/apply)

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