Senior Java Full-Stack Developer

EY

Full-time Computer Occupations
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Location
Katowice, Silesian Voivodeship, Poland
Posted
June 01, 2026

Job Description

The opportunity

As a Senior Java Developer, you will work across delivery and R&D streams, building high‑quality solutions, experimenting with new technologies, and shaping reference architectures used in global projects.



Your key responsibilities

  • Contribute to implementation and R&D initiatives across multiple project streams.

  • Co‑develop reference architectures, Java microservices, SDKs, and accelerators.

  • Build automated unit, integration, and contract tests; create test harnesses and performance benchmarks for prototypes and PoCs.

  • Collaborate with agile R&D and non‑R&D teams to bring client and market insights into the R&D backlog.

  • Produce design notes, ADRs, PoC summaries, and validation materials supporting experimental work.

    • Skills and attributes for success

  • Highly proficient in web-based OOP (functional programming will be a plus) 

  • Experience de...

    • Job Details

    • Job Type
      Full-time
    • Category
      Computer Occupations
    • Date Posted
      June 01, 2026
    • Application Deadline
      July 11, 2026