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28Stone

Lead Java Developer

28Stone
Poland · Full-time · Mid-Senior

28Stone is a full service custom solutions firm. We offer a wide range of services - from ‘tip of the spear' advisory, application design, system architecture to implementation, testing and deployment.

We partner with the world's leading financial institutions to design and build robust financial applications that improve their business performance while reducing system risk, cost and time to market.

We develop technology of value: we are proud of our proven track record of delivering quality results and the trust our clients place in us with ongoing, repeat engagements.

We celebrate winning the Top 1% Workplace Awards 2023 in the "Best Workplace for Technologists" category and are always seeking to expand our team with positive, open-minded, and motivated individuals who are eager to learn as well as share what they know.

Your Impact Zone

  • Perform system design (High /low), Workflow diagrams and participate in design review sessions
  • Designing and writing clean and testable code
  • Effectively collaborating with the project team
  • Maintaining own productivity and aligning to project goals
  • Actively contributing to technical solution definition
  • Communicating with the client daily

Requirements

  • At least 5+ years of hands-on experience in developing enterprise applications using Java
  • Must have 5 plus years of Spring/Spring boot development experience
  • Experience in Camel
  • Threading/Concurrency, Collections, Exception Handling and other core java features
  • Experience in writing REST, Microservice & APIs- including performance, security, and error handling aspects
  • Good knowledge of SQL, entity relations (ORM) and writing queries
  • Decent knowledge in protocols - http/https, SSL, TCP and others
  • Good understanding of the CI/CD process
  • Build tools - Maven / Gradle
  • Version control - GIT (preferred) / SVN
  • Good written and spoken English communication skills (Communicate with international clients and colleagues)
  • Ability to work in a team and independently

Considered an advantage

  • Messaging experience (AMQ or Kafka)
  • Knowledge of cloud (Azure) and containers (OpenShift or similar)
  • Knowledge of Financial markets and Fixed income

Benefits

  • Work equipment: laptop (Windows only), headset, keyboard, mouse, and backpack
  • Loyalty gifts
  • Annual reviews and growth opportunities
  • Corporate event travel budget
  • 20 unpaid time-off days per working year

Compensation

Gross 38 - 46 EUR/hour

We are flexible and use an individual approach with each candidate we meet, so we invite you to apply even if you do not meet some of the listed requirements.

Only candidates who have the right to work in Poland are considered for this position.

The mentioned remuneration may vary depending on the candidate's skills, qualifications, and experience.

Key Skills

Ranked by relevance

gradle maven cloud java cicd git sql ssl
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Posted
Nov 19, 2025
Type
Full-time
Level
Mid-Senior
Location
Poland
Company
28Stone

Industries

IT Services IT Consulting

Categories

Information Technology

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