馃搷 Location: Warsaw or Krak贸w (hybrid - 2 days in the office per week)
馃搫 B2B: 170 - 200 PLN / h
馃彟 Industry: Financial Services / Payments
We are looking for a Senior Fullstack Engineer to join a team working on a large-scale payment platform used in enterprise environments. The platform enables fast, secure, and multi-channel financial operations.
The role focuses on building and maintaining backend and frontend services, modernizing legacy systems, and improving automation and efficiency. You will work in an Agile, DevOps-aligned environment with experienced teams.
Key Responsibilities:
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Develop and maintain services, microservices, and applications (backend and frontend) using Java 11/17/21 and ReactJS.
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Modernize legacy systems, migrating from mainframe and IBM WebSphere to API/microservice-based architectures.
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Reduce testing costs by implementing automated testing frameworks.
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Improve Straight-Through-Processing (STP) efficiency in services.
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Collaborate closely with DevOps and solution delivery teams.
Requirements:
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Strong experience with Java 11+ (Java 17+ preferred).
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Experience with Kubernetes and Git (required).
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Fluency in navigating Unix-based systems and command-line interfaces.
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Solid knowledge of SQL and relational databases (Oracle preferred).
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Practical understanding of REST APIs and microservice architectures.
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Knowledge of HTTP/Web technologies, JavaScript and React (preferred).
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Experience working in DevOps teams (preferred).
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Understanding of application monitoring (desirable).
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Knowledge of Spring / Spring Boot (desirable).
What We Offer:
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Work on a long-term, large-scale payment platform.
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Real impact on architecture, processes, and modernisation of services.
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Hybrid work model (Warsaw or Krak贸w).
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Mature engineering environment with focus on automation and best practices.
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Luxmed healthcare package and Multisport card.
