Senior Fullstack Engineer

O projekcie: What will you do? You will join an international engineering team building modern, high-impact digital platforms, taking end-to-end ownership across backend services, APIs, and user-facing applications in an Agile, cloud-native environment, with a strong focus on engineering quality, reliability, and practical delivery. We offer - Openness to hybrid work 2 days a week from our client office (for candidates from Kraków) and 6 days per month for candidates based outside Kraków - Working in a highly experienced and dedicated team - Benefit package tailored to your needs (medical, sport, lunch subsidy, life insurance, etc.) - Online training and certifications - Access to e-learning platform - Mindgram wellbeing platform - Social events Wymagania: - Strong commercial experience in full-stack software engineering.- Strong backend expertise in Java (11+ or 17+) with Spring and Spring Boot.- Working knowledge of Python for services, automation, and scripting.- Experience designing and building REST APIs and microservices.- Frontend experience with JavaScript or TypeScript and React or similar frameworks.- Experience with SQL databases and data modelling such as PostgreSQL or Oracle.- Familiarity with CI/CD, Git, and DevOps practices.- Ability to work effectively in Agile teams and communicate in English.Nice to have - Experience with cloud platforms such as AWS, Azure, or GCP.- Docker and Kubernetes experience.- Experience with messaging or event-driven systems such as Kafka or MQ.- Monitoring, observability, and production support experience.- Experience with data validation formats such as JSON or XML and integration testing. Codzienne zadania: - Design, develop, and maintain full-stack applications used by global users. - Build and evolve backend services and REST APIs primarily in Java with Python used for services, automation, and scripting. - Develop frontend features using modern JavaScript frameworks such as 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 ensure high quality. - Support production systems through incident investigation, fixes, and continuous improvement. - Collaborate closely with product, engineering, and platform or security partners to deliver reliable software.