Senior Data Engineer

Sisu Group is a fast-growing iGaming startup with over 200 team members and offices in Tallinn and Malaga. We are on a mission to redefine the future of iGaming and sports betting by building cutting-edge technology and next-generation player experiences. In 2024, and were successfully launched. Backed by €21M in secured funding , the majority of our company is owned by the people building it, our team. Sisu promotes a collaborative, non-corporate culture, offering competitive salaries with stock options to match. Are you someone who enjoys making data actually work - not just moving it around? :)) We’re looking for a Senior Data Engineer to join our Data team and take ownership of building reliable pipelines and clean, scalable data models. You’ll help turn raw data into something the business can truly rely on, working closely with analytics and engineering to make sure things are simple, fast, and trustworthy! Must have skills: Strong SQL expertise with hands-on experience building analytical data models (fact/dimension design, normalisation vs. denormalisation) Experience designing scalable data architecture patterns across staging, transformation, and reporting layers Proven experience working with modern cloud data warehouses (e.g., BigQuery, Snowflake, Redshift, or similar) Experience designing and maintaining ELT transformations using tools such as Dataform, dbt, or similar frameworks Proven experience building and orchestrating data pipelines using Airflow or similar workflow orchestration tools Experience working with data ingestion tools such as Airbyte or comparable EL solutions Experience implementing data validation, testing, and monitoring to ensure reliable analytics workflows Experience working with Git-based workflows and CI/CD practices for data projects Practical experience using Python for data pipeline automation and tooling Bonus points for: Experience specifically with BigQuery and its performance optimisation strategies (partitioning, clustering, cost control) Familiarity with streaming or event-driven pipelines Exposure to infrastructure as code (e.g., Terraform) Experience defining shared metric definitions and modeling standards across teams. Experience mentoring engineers or contributing to data platform best practices. You will be responsible for: Designing and maintaining scalable data models to support analytics and reporting Owning and ensuring reliable end-to-end data flow from ingestion to analytics consumption Ensuring data quality, consistency, and reliability across the data ecosystem Optimising warehouse performance and managing cost efficiency Collaborating with Analytics, Product, and Engineering teams to translate business requirements into scalable data solutions Contributing to the continuous improvement of the data platform, standards, and best practices Location: Tallinn, working hybrid - 4 in the office and a day remote. Company culture and benefits: At Sisu Group we believe in creating a positive and inclusive workplace culture where teamwork is the key. We value collaboration, open communication, and treat all team members as equals. We encourage each other to be proactive and take ownership, while also providing the support and resources needed to help them grow and develop even further. We understand that our employees are our biggest asset, which is why we offer a competitive compensation package that includes stock options, and generous paid time off. We believe that building a great company is about more than just creating a successful product, it's about building a community of passionate and driven individuals who share a common goal. If you're looking for a company where you can grow professionally, work with talented and dedicated colleagues, and make a real impact, while sharing our key values of caring, thinking outside the box, taking charge and having a positive mindset, then Sisu Group is the place for you. By submitting this application, the candidate agrees that Sisu Group stores personal details to be able to process the job application. Sisu Group follows and is compliant with the General Data Protection Regulation. Clear police record required, ensuring a commitment to integrity and a safe workplace.