Sr. Data Engineer - backend oriented (Java/Python/Go)

Wymagania: - 5+ years of backend or software engineering experience- Experience building data pipelines (batch and streaming)- Hands-on experience with AI/ML or generative AI in production environments- Strong coding skills in Java, Python, or Go- Experience with cloud platforms, Docker, and container orchestration- Knowledge of CI/CD, testing, and infrastructure automation- Strong SQL and data modelling skills- Good communication and collaboration skills- Eligibility to work in Poland (Warsaw office)- High ethical standards Codzienne zadania: - Build and maintain scalable backend systems supporting investment and AI-driven applications, owning them end-to-end - Develop batch and streaming data pipelines for ingestion, processing, and delivery across systems and models - Implement and integrate generative AI and LLM solutions, including APIs, embeddings, and production workflows - Design and maintain reliable microservices and APIs with a focus on performance, scalability, and security - Improve system stability through monitoring, observability, and performance optimisation - Collaborate with cross-functional teams to move solutions from prototype to production - Build and maintain CI/CD pipelines, automated testing, and deployment processes - Contribute to engineering best practices and support team capability growth - Ensure compliance with security and data governance standards