Machine Learning Engineer

Reply Polska Sp. z o. o.; Katowice; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Benefits platform

Budget 550 PLN

Medical care

Meal tickets

Sports cards

Cinema tickets

Shop vouchers

Language courses

Training opportunities

Networking events

Job summary

Reply Polska Sp. z o. o. invites a Machine Learning Engineer to join OBI Smart Technologies in Katowice, focusing on design, training and productionizing ML models in a hybrid work setup.

You will build end-to-end ML pipelines, collaborate with fellow ML engineers and data teams, ensure robustness and reproducibility, and work with Python, Git, CI/CD, and cloud platforms (Databricks/AWS/Azure/GCP). English and Polish communication required.

Qualifications

• University degree in Computer Science, Data Science, Mathematics or a related field.
• Proven experience building and operating production-grade ML pipelines.
• Strong Python engineering skills and clean-code practices.
• Hands-on experience with Git, CI/CD and version control.
• Experience with Databricks, AWS, Azure or GCP in ML projects.
• Fluent English and Polish; hybrid work with 1–2 office visits weekly.

Responsibilities

• Design, train and optimize classical and deep-learning ML models.
• Build and maintain end-to-end ML pipelines from data prep to deployment and monitoring.
• Ensure robustness, performance and reproducibility of ML solutions in production.
• Collaborate with other ML engineers and data teams on solution design.

Skills

Python engineering

Production ML pipelines

Clean code practices

English and Polish communication

Education

University degree in Computer Science / Data Science / Mathematics

Tools

Git

CI/CD

Databricks

AWS

Azure

GCP

Job description

Responsibilities

• As a Machine Learning Engineer with a focus on classical ML/deep-learning models, you are responsible for the technical design, implementation, and operation of productive ML solutions.
• You work in a tandem setup with an internal colleague who handles stakeholder management and overall coordination, allowing you to focus fully on modeling, pipelines, and technical execution.
• Design, train and optimize classical machine learning and deep-learning models for business-relevant use cases.
• Build and maintain end-to-end machine learning pipelines covering data preparation, feature engineering, training, validation, deployment and monitoring.
• Ensure robustness, performance and reproducibility of machine learning solutions in production environments.
• Implement structured and versioned ML workflows supporting reliable model development and operation.
• Collaborate closely with internal machine learning engineers and data teams on technical topics and solution design.

Benefits

• Motivizer Benefits Platform to choose and manage all your benefits in one place.
• You receive a budget (550 PLN monthly).
• You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms).
• cinema tickets.
• shop vouchers.
• discounts and many more.
• Language Courses – you'll have access to a multi-language learning platform enabling you to practice your language skills and learn new ones!
• Regular and systematic further training opportunities - both internally and from external providers.
• We support your ongoing learning and development.
• Cooperation within an internal community is our everyday reality.
• We have networking events, coding challenges, and company parties for different occasions.

Qualifications

• Successfully completed university degree in Computer Science, Data Science, Mathematics or a related field.
• Solid experience building and operating production-grade machine learning pipelines.
• Strong Python engineering skills, including clean code practices and software engineering best standards.
• Hands‑on experience with Git-based version control and working with CI/CD pipelines as a user.
• Experience with productive ML platforms and cloud‑based ML environments (e.g. Databricks, AWS, Azure or GCP).
• Fluent communication skills in English and Polish and availability to work in a hybrid mode with 1–2 office visits per week.

About OBI Smart Technologies

WHO ARE WE: We are a joint venture between OBI and Reply Group, responsible for co‑designing, building and operating mission‑critical digital platforms for commerce, customer service, and omnichannel retail.

OUR MISSION: "We unite technology leadership with deep retail vision to implement standardized processes and scalable digital products that drive efficient support for one of Europe’s largest DIY retailers. Leveraging proven best practices, we advance the internationalization of products and the digital mindset of our partners, delivering consistent and business‑critical solutions to support the targets of our customer."