Data Science Specialist

Technologies we use

Expected

• XGBoost
• LightGBM
• MLP
• Autoencoders
• SQL
• Python
• Pandas
• PySpark
• Apache Spark

Optional

• Spring Cloud
• MuleSoft
• Seeburger
• Kafka
• RabbitMQ
• Redis
• Docker
• JUnit

About the project

We are seeking a Data Science Specialist who will play a key role in supporting our ML team. You will work on developing and validating advanced models, performing feature engineering, and ensuring data quality for analytics initiatives.

If you are passionate about Machine Learning, love turning complex data into actionable insights, and want to be part of a highly collaborative team - this role is for you.

Sounds like your kind of challenge?

This is how we organize our work

This is how we work

• agile

Your responsibilities

• Support the ML team in end-to-end processes including feature engineering, model selection, training, validation, and testing.
• Analyze large and complex datasets, ensuring they are optimized for project objectives.
• Work closely with Data Scientists and Data Engineers to deliver high-quality analytical solutions.
• Contribute to continuous improvement of ML pipelines and automation processes.
• Note: Detailed project information will be shared during the recruitment process.

Our requirements

• Strong expertise in classical ML pipelines, including hands-on experience in model lifecycle management.
• Proficiency in feature engineering techniques and experience with models such as: XGBoost, LightGBM, MLP, Autoencoders, etc.
• Advanced SQL skills (both in standard language and through Python APIs, e.g., PySpark, pandas).
• Knowledge of Apache Spark will be highly appreciated.
• You are detail-oriented, diligent, and an excellent communicator.

What we offer

• Flexible cooperation model
• Hybrid work setup – 8x/month from the office in Kraków
• Collaborative team culture – work alongside experienced professionals eager to share knowledge
• Continuous development – access to training platforms and growth opportunities
• Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
• High quality equipment – laptop and essential software provided

This is how we work on a project

• Continuous Deployment
• Continuous Integration
• documentation
• issue tracking tools

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• life insurance

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.

Mindbox Sp. z o.o.

At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.

Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.