FM ART - Java Developer Senior

B2Bnetwork • IT Outsourcing & Dedicated Teams • Software Testing & QA • Java • SQL • 19 days ago
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Location
In office
Seniority
Senior

Confirmed on the employer's own hiring board on Sep 29, 2026. First seen by Alion on Sep 10, 2026. B2Bnetwork scores B on the Alion truth index.

Overview
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B2Bnetwork

B2Bnetwork (B2B.net S.A.) is a Warsaw-based IT outsourcing and software testing company that supplies IT engineers and whole teams to clients in data and analytics, cloud, cybersecurity, digital workplace and application development and maintenance. It operates from the Kopernik Office Buildings in Warsaw, runs QA, cloud, security and academy networks, organises ISTQB examinations, and places many specialists on projects for large banks, most visibly Nordea in Warsaw and Gdansk. Its postings cover Java and Python developers, test automation engineers, IT analysts, data engineers, solution architects, Scrum masters and project managers, largely on B2B contracts.
b2bnetwork.ai • HQ: Warsaw, Poland • IT Outsourcing & Dedicated Teams • Software Testing & QA • IT Staffing & Staff Augmentation • Est. 2019

Detailed description of work task to be carried out

Working as an Senior Java Developer (with Apache Kafka) in Fraud Management Domain

Working with other developers in a scrum team

Contributing to solution design and maintainability of applications

Building and maintaining near real-time data pipelines

Interacting with product owners and stakeholders to clarify requirements

Collaborating with other engineers and properly documenting your design & solutions

Must-have knowledge and experience:

Senior Server-side Java development skills (Java E3, Spring Boot E3, Web Services/SOAP/REST E3)

Performance analysis, profiling and optimization

Microservices, integration patterns

Messaging technologies (Kafka)

Relational databases, SQL (Oracle or similar)

Knowledge of NoSQL, Redis is a plus

Nice-to-have knowledge and experience

Containers on Kubernetes

AWS PaaS e.g. Lambdas

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