Salary: 1000 - 1350 PLN/md net+VAT B2B Remote: remote or flexible hybrid from Gdynia / Kraków / Warszawa / Rzeszów   Why choose this offer? Impact on the development of the largest e-commerce system in Poland Adapting functionality to the behavior of users You can expect a flexible work organization The Jit community will bring you a nice time during regular integration meetings   Project We are looking for skilled Senior Machine Learning Engineers to join our teams working on advanced machine learning projects.The role is focused on Model Maintenance & Production, with strong collaboration with Data Science teams and responsibility for operationalizing machine learning models in production environments. You will join a team responsible for maintaining and operationalizing machine learning models developed by Data Science teams.The team ensures the stability, quality, reliability, and lifecycle management of ML models running in production   What you will be doing: Maintaining and operating ML models in production environments Monitoring data quality and model outputs Automating ML pipelines and inference workflows Ensuring reliability, scalability, and robustness of ML systems Close collaboration with Data Science teams during model development and deployment   Expected competences and knowledge Strong background in mathematics, statistics, and data science Proven commercial experience in ML, neural networks, or algorithmic modeling (min. 5 years) Experience in production ML environments Experience in MLOps / ML Engineering Hands-on experience working with production data Strong focus on system quality, stability, and reliability Experience with ML pipelines and workflow automation Strong programming skills: Python, SQL, Git   Technologies you'll work with Programming & Data Processing: Python, SQL Version Control & Collaboration: Git ML Orchestration & Workflow: Airflow or similar tools Neural networks, predictive models, scoring algorithms   Client – why choose this particular client from the Jit portfolio? Our Client dominates the Polish e-commerce arena as the market leader since 1999. With a user base of over 20 million and growing, this well-established platform is at the forefront of e-commerce, constantly striving for growth through market expansion and investment. As a major player in technology, our Client boasts a talented IT team of over 1,000 employees who focus on developing their own cutting-edge technologies.  Jit Team has had a successful partnership with our Client since spring 2021, with multiple software development teams dedicated to our Client's platforms. These teams operate autonomously, designing platform components through micro-services.  Working with our Client offers a chance to contribute to a solution used by millions on a daily basis and to tackle the challenge of delivering software at a massive scale, where even a single second of delay can have a significant impact. This project provides a unique opportunity to work with state-of-the-art technologies and tools, making it a rare and valuable experience.    About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.