Senior Java Developer

Java

plac Nowy Targ 28, Wrocław

Spyrosoft

110 - 150PLN

Net per hour - B2B

Full-time

B2B

Senior

Remote

Tech stack

English

B2

Polish

A2

Java

advanced

Spring

advanced

Job description

Project description:

Join a mission-critical modernization initiative powering a global employee benefits platform.

We’re looking for a skilled Java Developer to play a key role in the development and maintenance of a multi-tenant, web-based benefits management system. This system supports extensive customization for our clients, including branding and localization features.

Main responsibilities:

• Contribute to the development and continuous enhancement of our core benefits management platform.

• Participate in a strategic project to replace the legacy IdentityServer3-based authentication system with a modern external identity provider ( Keycloak).

• Define the architectural framework and deliver a proof of concept for the identity system migration.

• Analyze and document current authentication flows and requirements to ensure functional compatibility during transition.

• Collaborate with internal teams and stakeholders to define technical and security requirements for the new system.

• Evaluate integration strategies, user flows, and ensure seamless compatibility with existing infrastructure and applications.

Tech stack:

• Java 11–17

• Spring Framework 5 / Spring Boot / Spring Reactive

• MongoDB

• Kubernetes

• Keycloak (Identity Provider)

• Legacy IdentityServer3 (being replaced)

Requirements:

• Strong experience in Java (11–17) and Spring ecosystem (Boot, Reactive).

• Familiarity with MongoDB and containerized environments like Kubernetes.

• Experience or interest in identity and access management systems, particularly Keycloak.

• A proactive mindset for modernization, problem-solving, and delivering proof of concepts.

• Excellent collaboration and communication skills.

Published: 14.08.2025

Meet the company

Spyrosoft

Spyrosoft is an authentic, cutting-edge software engineering company, established in 2016. We have been included in the Financial Times ranking of 1000 fastest growing companies for three consecutive years: 2021, 2022 and 2023.

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