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Salary
≈ $39k – $67k per year (Estimated)
Location
In office (Gdynia)
Seniority
Senior
Employment
Full-Time

First seen by Alion on Aug 27, 2026. B2Bnetwork scores B on the Alion truth index.

Overview
Company
Impact
Profile match
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.

We are looking for an experienced Senior Integration Test & Service Virtualization Engineer to join a team responsible for Service Virtualization, test automation, and performance testing within a complex enterprise environment.

The role focuses on working with IBM Rational Integration Tester (RIT), testing integrations between systems, and ensuring the performance and stability of critical platforms.

Responsibilities

  • Design and develop Service Virtualization solutions using IBM Rational Integration Tester (RIT)

  • Automate integration testing

  • Perform performance, load, and scalability testing

  • Test and support integrations across enterprise systems

  • Work with various integration technologies and communication protocols

  • Troubleshoot and resolve issues in complex distributed environments

  • Support critical projects and ensure platform stability

  • Share technical knowledge and best practices with other engineers

  • Ensure high quality, reliability, and stability of delivered solutions

Must-have requirements

  • Strong hands-on experience with Service Virtualization

  • Practical experience with IBM Rational Integration Tester (RIT), particularly in Service Virtualization

  • Strong experience in Performance Testing

  • Hands-on experience with load and scalability testing

  • Experience with enterprise integration technologies and protocols:

    • REST

    • SOAP

    • MQ

    • HTTP/S

    • SFTP

  • Strong troubleshooting and problem-solving skills in complex distributed systems

  • Experience supporting critical applications in large-scale enterprise environments

  • Ability to mentor engineers and share technical best practices

  • Proven track record of delivering high-quality, reliable solutions and ensuring system stability

Nice to have

  • Experience working in Banking or Financial Services environments

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