Senior Full Stack Software Engineer

LinkGroup is an international engineering team building modern, high-impact digital platforms with a strong engineering culture and a hybrid working model based in Kraków, Poland.

• Strong commercial experience in full-stack engineering.
• Backend expertise in Java (11+/17+) and Spring / Spring Boot; working knowledge of Python for services/automation is required.
• Experience designing and building REST APIs and microservices.
• Frontend experience with JavaScript / TypeScript and React (or similar).
• Experience with SQL databases and data modelling (e.g., PostgreSQL, Oracle).
• Familiarity with CI/CD, Git, and DevOps practices.
• Comfortable working in Agile teams and communicating in English.

Nice to have:

• Cloud platforms (AWS, Azure, or GCP).
• Docker and Kubernetes.
• Messaging/event-driven systems (Kafka, MQ).
• Experience with monitoring/observability and production support.
• Experience with data validation formats such as JSON/XML and integration testing.

• Design, develop, and maintain full-stack applications used by global users.
• Build and evolve backend services and APIs primarily in Java, with Python used where it best fits (services, automation, scripting).
• Develop frontend features using modern JavaScript frameworks (e.g., React).
• Contribute to solution design, technical discussions, and pragmatic trade-offs.
• Deliver changes through CI/CD pipelines and engineering quality gates.
• Write automated tests and participate in code reviews to keep quality high.
• Support production systems (incident investigation, fixes, and continuous improvement).
• Work closely with product, engineering, and platform/security partners to deliver reliable software.