Senior Software Engineer (Python, Spark)

As a Senior Software Engineer, you’ll be working on data-driven solutions within the financial data and analytics space. This is a long-term collaboration on a project being built from scratch, giving you real influence over architecture, technology choices, and engineering standards from day one. You’ll be shaping platforms that process large-scale, real-time data used across global financial systems, in a modern and evolving data environment. Key responsibilities • Design and develop scalable solutions based on Data Lake technologies (Delta Lake preferred) • Build and maintain Change Data Feed pipelines to keep data accurate and up to date • Implement data replication and synchronization across multiple environments • Develop cloud-native services using Azure Kubernetes Service (AKS) • Work within event-driven architectures across ingestion, orchestration, and processing • Contribute to solutions leveraging Microsoft Azure Fabric • Collaborate with Engineering, Architecture, and Product teams • Promote best practices: clean code, CI/CD, automation, monitoring, and reliability • Take part in code reviews, technical discussions, and shaping engineering standards Ideal candidate profile • Strong experience with Data Lake architectures and optimization (Delta Lake is a plus) • Solid understanding of Change Data Feed, replication, and real-time data processing • Very good programming skills using Python or/and other programming languages • Experience in Spark highly demanded • Hands-on experience with AKS and microservices-based systems • Experience with event-driven platforms (e.g., Event Hubs, Kafka, or similar) • Familiarity with Microsoft Azure Fabric and its data ecosystem • Ability to solve complex problems and make practical technical decisions • Comfortable working independently while contributing to a team • Clear communication skills across technical and non-technical audiences Conditions • Form of cooperation: UoP + KUP 50% • Salary range: 18 000 - 30 000 PLN gross/month + yearly bonus depends on the results • Hybrid work model: 3 days per week in the Warsaw office • Benefits: private medical care, Multisport card, employee pension scheme Recruitment steps • Call with a KUBO recruiter (approx. 30 min.) • Interview with the client (max. 2 rounds) • Decision and feedback About us W KUBO naprawdę zależy nam na ludziach. Zapraszamy osoby w różnym wieku, o różnych tożsamościach i sposobach funkcjonowania oraz niezależnie od sytuacji zdrowotnej i rodzinnej. Autentyczność jest dla nas wartością, a naszym celem jest uczciwy i otwarty proces dla wszystkich. At KUBO, we genuinely care about people. We welcome candidates of all ages, backgrounds, identities, family constellations, health situations, and ways of thinking and interacting with the world. You’re welcome to be yourself — we value authenticity, and we’re committed to creating a fair and inclusive process for everyone.