Backend Engineer

We deliver an all-in-one behavioral data platform called Synerise, enhanced by AI, supporting over 30 markets in industries like Retail, Banking, eCommerce, Automotive, Insurance, and Telco, processing over 150 billion transactions annually. Additionally, we are building BaseModel, a foundation model for behavioral data targeting enterprise Data Science teams, expanding innovation in AI for business.

• Programming skills in Scala or other JVM language.
• Programming skills in Rust or willingness to learn.
• Solid understanding of Apache Kafka and Kubernetes.
• Experience with at least one of: Akka, ZIO, Cats.
• Experience with SQL and NoSQL databases.
• Hands-on experience using AI coding tools (e.g., Claude Code, Cursor, GitHub Copilot) in daily work.
• Ability to plan and scale systems for growth.
• Excellent troubleshooting and debugging skills.
• Passion for building tools and automating processes.
• Strong analytical skills.

Nice to have:

• Solid understanding of JVM internals (GC, profiling, heap and thread dumps).
• Experience designing and operating microservices architectures.
• Hands-on experience with cloud environments (Azure, GCP), preferably with AKS.
• Working knowledge of Java or Python.
• Knowledge of Elasticsearch/Opensearch.
• Basic knowledge of AI/ML concepts.

• Develop architecture and design patterns to process and store high volume data sets.
• Develop software with a core focus around optimisation and performance.
• Translate complex functional and technical requirements into detailed design.
• Perform analysis of vast data stores and uncover insights.

The data controller is Synerise S.A. based in Cracow. Personal data will be processed for recruitment purposes and can be withdrawn anytime. For more details, see the Data Protection Information.