Senior Full Stack Software Engineer

We are looking for a Senior Full Stack Software Engineer to join an international engineering team building modern, high‑impact digital platforms. This is a hands‑on role with end‑to‑end ownership – from backend services and APIs to user‑facing applications – delivered in an Agile, cloud‑native environment.

What we offer:

• Long‑term engagement on international projects.

• Modern technology stack and strong engineering culture.

• Hybrid working model with office location in Poland (Kraków).

• Clear technical growth path and exposure to challenging problems.

What you will do:

• 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.

What we are looking for:

• 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.