Junior Data Analyst/Engineer

Brno/Bratislava I Part-Time

The Mission

As a Junior Data Analyst/Engineer at ThreatMark, your primary mission will be to support our data-driven decisions that enhance the quality and security of our products. You will play a vital role in analyzing trends, unearthing insights, and contributing to the overall success of our product development. By ensuring our data is precise and meaningful, you’ll enable our clients to achieve their business objectives with confidence, knowing they are backed by reliable and insightful data analysis. You will be a part of our Research Team among colleagues with ML/AI and Data Analysis expertise.



  • Seniority: Entry-level (Students are encouraged to apply)

  • Hire: Employee or Contractor

  • Employment Type: Part Time

  • Place of work: Offices in Brno, Bratislava or Prague; Full Remote Possible



In this role, you will:

  • Build and maintain storage of structured and semi-structured data, ETL and data manipulation in DataLake.

  • Create meaningful datasets from source data.

  • Create and maintain data reports with qualitative and quantitative metrics.

  • Perform exploratory data analysis and provide insights and interpretations derived from the analysis.

  • Prototype new features to enhance our fraud detection capabilities.

  • Validate prototypes or solutions by correctly preparing experiments and measuring adequate statistical metrics.

  • Visualize metrics and results of data analysis in appropriate easy to read plots and tables.



Must have:

  • Knowledge of Python, SQL, relational database design (logical models), statistical metrics used in data analysis and ML (recall, precision, ROC AUC, …).

  • Familiarity with scikit-learn, numpy, matplotlib/seaborn/plotly.

  • Being able to communicate in English.


Nice to have:

  • Familiarity with PySpark.

  • Experience with creating reports, data analysis tasks or Machine Learning.


What we value:

  • A strong ability to take ownership and move towards shared goals without supervision.

  • A positive, can-do attitude with a no-excuse startup mindset.

  • A fervent passion to learn new skills and technologies.


At ThreatMark, we value diversity and are committed to creating an inclusive environment for all employees. If you are passionate about data analysis and eager to contribute to a team that is making a significant impact in the cybersecurity landscape, we encourage you to apply. Please submit your resume and a brief cover letter explaining your interest in the role and how your skills align with our mission.

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