Company Description Tesco is a leading multinational retailer, with more than 330 000 colleagues. Our software is used by millions of people across several countries every day. Whether it’s the tills and websites our customers use, or the systems our colleagues and partners use, you’ll play your part in keeping it running like a well-oiled machine. And when a business problem pops up? You and the creative minds in our team will be challenged to solve it. As Tech Hub we cooperate within the group of Tesco Technology Hubs located in the UK, Poland, Hungary, and India. What our colleagues like the most at Tesco: We develop our own products We make an impact; large scale of operation Accountability and respect are given to us We cooperate and support each other There are great colleagues who are divided into small teams here We can develop and learn new things Job Description About the Tesco Technology - Forecasting team In Forecasting team, we build products that powers the engine of the Supply Chain that makes sure customers get what products they need when they walk into a Tesco Store or shop through other channels. We influence product availability through advanced forecasting and right ordering. It's challenging since it needs to be done whilst keeping waste reduction and optimal stock holding. This helps keep our operational costs in control and helps the bottom line. The more we save, the more we can pass on to our customers w.r.t the right price. It’s fun since we are building better capabilities on newer platforms. This involves a lot of learning since we are transforming our forecasting intelligence to algorithms on big data platforms. We crunch a large volume of history, react to recent trends, promotional events, turn demands into the right kind of orders for supplier and store. The nature of our products lends itself to real-time data inputs, machine learning, and applied statistics, safely allowing us to say it’s a fantastic problem space to work in and help solve. We take responsibility for the software through its entire lifecycle. We practice continuous integration and delivery and support our code through to production and beyond. Responsibilities :  Whilst specific responsibilities will be dependent upon the changing needs of the Tesco business, the following provides an overview of the role’s key responsibilities and measures: Consistently deliver against the product and engineering backlogs. Support your and your team’s code all the way to production.  Adhere to the processes, designs, and systems your teams have agreed to. Contribute to the definition of features for services owned by your team. Continuously improve yourself and your team by suggesting and helping implement new Engineering processes and practices. Customer focus. You find the right balance between outcome delivery and technical excellence. Mentor less experienced developers Effectively communicate your and your team’s progress to your team members, your Manager, and wider Tesco colleagues. Qualifications Technology stack  which we are using: Languages : Python 3. Frameworks : PySpark 2.x/3.x (Batch/SQL API), Hadoop, Airflow DB : Hbase, Hive Testing : PyTest VCS : GitHub Other : Zendesk & JIRA You will need: 4+ years of commercial software development experience and 2+ years in big data platform You have production level experience working with Spark Problem solving, analysis and computational skills. You are comfortable designing systems and reasoning about them. When tackling problems, you take a thorough and logical approach to solving them and you retain ownership through to resolution. Designing and developing systems for high availability and scalability Experience working with data, algorithms and setting up solid data platform capabilities Professional software engineering experience and best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations Experience of running and supporting software in production Additional information Hybrid working Currently, at Tesco Technology we work in a hybrid model. We love working from home, but we also love connecting, collaborating and innovating with our colleagues in person. We meet in our office in Kraków for 2 days a week. Benefits Tesco is a diverse and exciting employer, dedicated to being #aplacetogeton, providing career-defining opportunities to all of our colleagues. If you choose to join our business, we will provide you with (for all): Permanent contract  from the go – as a sign of our trust in your abilities MacBook  as your tool for work Learning opportunities  - certified technical training and learning platforms like Udemy, Pluralsight and O’reily Referral Bonus Sports activities  with a personal trainer in the office Benefits for colleagues on employment of contract only: Additional  4 days of paid leave  to support your well-being and family life Up to 20% yearly salary bonus  – based on both individual and business performance Private healthcare  (LuxMed) Cafeteria & Multisport Supporting those, who are not yet eligible for full  holiday  entitlement, by expanding their pool from  20 to 25 days Relocation Help Heightened income costs (KUP)   If that sounds exciting, then we'd love to hear from you. Tesco is committed to celebrating diversity and everyone is welcome at Tesco. As a Disability Confident Employer, we’re committed to providing a fully inclusive and accessible recruitment process, allowing candidates the opportunity to thrive and inform us of any reasonable adjustments they may require.