Data Engineer with AWS - fintech sector (f/m/x)

Expected, Python, AWS, Data Streaming, Apache Kafka

Optional, Databricks

About the project, Join Sii and work with one of Europe’s leading fintech scale-ups., , We are currently looking for a Data Engineer to join Sii and contribute to a long-term project delivered for a Copenhagen-based fintech that’s redefining how businesses manage company spending, empowering over 40,000 organizations across Europe with smart cards and real-time financial insights. In this role, you’ll operate at the intersection of data and product engineering, building reliable, low-latency data pipelines that directly power customer-facing features in a modern, event-driven architecture.

Your responsibilities, Building and maintaining product-serving data pipelines on AWS that feed the customer-facing serving layer — working to product backend reliability and latency standards, not analytical pipeline standards, Contributing to the event infrastructure and ingestion pipelines that underpin real-time and near-real-time data serving, Supporting the Kafka migration and data contract work needed to make the serving layer reliable at scale, Working closely with backend and product engineering teams — this role sits at the data/product boundary, not inside the analytics function, Owning pipeline reliability and monitoring for the serving layer, flagging and resolving issues with the urgency appropriate to customer-facing systems

At least 5 years of experience as a Data Engineer in cloud-based environments, Proven expertise with AWS-native data infrastructure (S3, Glue, Lambda, Step Functions), Strong Python engineering skills, Experience in building low-latency, reliable data serving pipelines with SLOs and monitoring appropriate to customer-facing products, Familiarity with streaming or event-driven data infrastructure (Kafka or similar) and understanding of the operational demands of real-time or near-real-time data flows, Knowledge of event schemas and data contracts, and understanding of the downstream consequences of schema changes on consuming services, Familiarity with fintech or regulated data environments, particularly payments, financial operations or compliance data, Fluent English, both written and spoken, Residing in Poland required

What we offer, Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas, Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market, We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022, Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more, Comfortable workplace – class A offices or remote work, Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application, PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers, Investment in your growth – meetups, webinars, training platform and technology blog – you choose, Fantastic atmosphere created by all Sii Power People

Recruitment stages, Send your CV, Talk to us about your expectations, Learn more about our projects and choose the best, Start your adventure with Sii!

Sii Sp. z o.o., Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment., , Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

This is how we work,