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Billennium

Full Stack Engineer

Billennium
Poland · Full-time · Mid-Senior

More about us

Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together!


About the Client

We are looking for an Mid Java Full Stack Developer with Angular who will join a long-term project for our client in banking and finance industry.


What will you do:

  • Development (Backend and Frontend) on several applications within the Digital Platform scope; both on new and existing applications
  • Perform code reviews
  • Participate in SCRUM events
  • Participate in technical analysis and discussions
  • Be pro-active and take initiative
  • Work closely with your colleagues and communicate


What we are looking for:

  • Java 11 (JDBC, Collections, Serialization, Memory management)
  • Web communication: XML, JSON, REST
  • Spring framework
  • JPA (Hibernate)
  • Knowledge RDBMS specifically SQL skills
  • Web communication: experience with OpenAPI specifications (Swagger)
  • Proficiency in Web languages (JavaScript, Typescript, HTML, CSS)
  • Proficiency in Angular 14+ framework (SPA)
  • Knowledge on reactive programming (RxJS)
  • Good understanding of GIT, Maven and npm
  • Understanding of Frontend Security topics (owasp)
  • Understanding of Backend Security topics
  • English B2 level and Polish on C1 level


Openness to visiting the client’s office 1-2 times per week in Warsaw .


Perks and benefits:

  • Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers.
  • Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle & location.
  • Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & more.
  • Global collaboration - work with a diverse, international team.
  • Innovative environment - be part of a forward-thinking and growth-oriented workplace.
  • Engaging community – Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work.
  • Team-building events including our company tradition (annual company event in Mazury).
  • A pleasant surprise to start your journey with us in the form of a welcome pack.


Recruitment process:

  • HR call
  • Technical Interview
  • Interview with the dedicated Client
  • Final decision/ Feedback


Sounds interesting?

Click "Apply" and have a chance to hear more!

Key Skills

Ranked by relevance

javascript typescript salesforce maven scrum java git sql aws xml
Login to Apply
Posted
Dec 20, 2025
Type
Full-time
Level
Mid-Senior
Location
Warsaw
Company
Billennium

Industries

IT Services IT Consulting

Categories

Information Technology

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