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Senior Software Engineer (Java) Poland Jobs

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Senior Software Engineer - Java
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Join our Warsaw team as a Senior Java Engineer. Design and build scalable, API-driven backend services using Spring Boot. You will own complex, CRUD-based systems end-to-end in a production environment. We seek 5-7 years of Java expertise with Docker/Kubernetes exposure.
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Poland , Warsaw
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Mastercard
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Senior Software Engineer (Java)
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Join Sopra Steria Polska in Katowice as a Senior Java Engineer. You will integrate the Simpl‑Open middleware into the Language Data Space, focusing on secure onboarding, APIs, and semantic interoperability. We seek strong Java/Spring Boot skills with Docker, OAuth 2.0, and REST API experience. En...
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Poland , Katowice
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12000.00 - 16000.00 PLN / Month
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Sopra Steria
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Senior Software Engineer - Java
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Join Mastercard's Open Banking team in Gdansk as a Senior Java Engineer. Develop and maintain state-of-the-art APIs for secure, seamless European bank connectivity. You will build low-touch solutions for onboarding, transaction monitoring, and compliance. Ideal candidates have deep Java expertise...
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Poland , Gdansk
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Mastercard
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Senior Software Engineer - C# OR Java
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Join our Connectivity division in Gdansk as a Senior Software Engineer. You'll design and maintain APIs integrating our platform with thousands of European banks, tackling scalability and regulatory complexity. We seek strong backend experience in .NET/Java, API design, and PSD2 interfaces. Make ...
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Poland , Gdansk
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Mastercard
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Senior Java Software Engineer
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Join our Warsaw team as a Senior Java Engineer. Lead the migration of JBoss systems to a modern Spring Boot cloud environment using Java 17+, Camunda, and Kubernetes. Enjoy a hybrid model, flexible hours, and a rich benefits package including mentoring and a team-building budget. Apply your exper...
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Poland , Warsaw
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Inetum
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Senior Software Engineer - Java
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Join Mastercard's Open Banking team in Gdansk as a Senior Java Engineer. Develop and maintain secure, high-quality APIs for seamless European bank connectivity. Utilize your deep Java expertise, AWS, and modern CI/CD practices to build innovative, low-touch solutions. Work on critical systems inv...
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Poland , Gdansk
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Mastercard
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Senior Software Engineer, Backend (Java)
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Join our team as a Senior Backend Engineer (Java) and help build a platform connecting millions to their ideal jobs. You'll design distributed systems on AWS/Kubernetes, applying TDD and clean architecture principles. We offer a remote-friendly culture in Poland, competitive salary, and meaningfu...
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Poland
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SmartRecruiters
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About the Senior Software Engineer (Java) role

Explore Senior Software Engineer - Java jobs and discover a pivotal career at the heart of modern technology. A Senior Software Engineer specializing in Java is a seasoned professional responsible for designing, developing, and maintaining robust, scalable, and high-performance software systems. This role transcends basic coding, involving deep architectural thinking and end-to-end ownership of complex applications. Professionals in these jobs are instrumental in transforming business requirements into technical solutions, ensuring system reliability, security, and efficiency.

Typical responsibilities for a Senior Java Engineer encompass the full software development lifecycle. They architect and implement backend services, microservices, and APIs, often using frameworks like Spring Boot. A core duty is designing scalable system architectures, making critical decisions on data storage with SQL (e.g., PostgreSQL) and NoSQL (e.g., MongoDB) databases. They write clean, maintainable, and well-tested code while enforcing best practices through code reviews. These engineers also optimize application performance, troubleshoot complex issues, and ensure seamless integration with front-end systems and third-party services. Furthermore, they frequently collaborate with cross-functional teams, including product managers, DevOps, and quality assurance, to deliver cohesive products. Leadership is a key aspect, as they mentor junior developers, lead technical discussions, and contribute to strategic planning.

The typical skill set required for Senior Software Engineer - Java jobs is comprehensive. A strong foundation in core Java, object-oriented design, and design patterns is essential. Proficiency with enterprise frameworks (Spring, Hibernate), RESTful API design, and microservices architecture is standard. Experience with cloud platforms (AWS, Azure, GCP) and containerization tools like Docker and Kubernetes is increasingly important. These roles demand expertise in build tools (Maven, Gradle), version control (Git), and CI/CD pipelines. Beyond technical acumen, successful candidates possess strong problem-solving abilities, excellent communication skills for articulating technical concepts, and a proactive approach to learning new technologies. A bachelor’s degree in computer science or a related field, coupled with 5+ years of progressive development experience, is commonly expected.

Ultimately, Senior Software Engineer - Java jobs are for those who thrive on technical challenges and leadership. It is a career path defined by building foundational business logic, driving innovation, and ensuring the technical excellence of software products that power organizations worldwide.

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