Senior QA Engineer - SaaS Integrations (API & Event-Driven Systems)

Salary: 1000 - 1160 pln/md B2B

Remote: hybrid from Gdynia 2 days per week from the office

 

Why choose this offer?


  • You will have the opportunity to work independently
  • The international work environment will allow you to come into contact with the English language on a daily basis
  • Scandinavian organizational culture will provide you with work-lifebalance
  • The Jit.QA community will bring you a nice time during regular meetups

 

Project


Join a team responsible for building and maintaining SaaS integrations between a cloud-based platform and multiple external systems. The focus is on reliable data exchange via APIs, data synchronization, and event-driven communication patterns in a multi-tenant environment.

You will play a key role in ensuring end-to-end quality of integrations across distributed systems.

 

Responsibilities you'll have
  • Perform end-to-end testing of SaaS integrations, including cross-system workflows
  • Validate data quality:
    • correctness and completeness of synchronized data
    • consistency with system data models (e.g. Synergi Life)
    • API payload validation (JSON/CSV) and mappings
  • Test event-driven scenarios:
    • validate publish/subscribe flows
    • simulate failure scenarios (e.g. unavailable subscribers, network issues)
    • verify retry mechanisms and absence of duplicates or data loss
    • validate logging and monitoring
  • Assess integration reliability and non-functional aspects:
    • backward compatibility
    • resilience and robustness
  • Develop and maintain lightweight automation:
    • API-level tests
    • smoke and contract tests
  • Analyze logs, telemetry and system behavior to troubleshoot complex issues
  • Collaborate with developers, product managers, and external integration teams

Expected competences and knowledge

  • Strong experience testing complex integrations in SaaS or multi-tenant environments
  • Solid experience with API testing (REST)
  • Ability to validate data flows across multiple systems
  • Hands-on experience with testing tools / scripting (e.g. Postman, Bruno, PowerShell, Python)
  • Experience working with distributed systems
  • Ability to work independently as the primary QA in a team
Nice to have
  • Experience with event-driven architectures (e.g. message queues, Azure Service Bus, CloudEvents)
  • Understanding of asynchronous processing & integration patterns
  • Experience with logs & telemetry analysis
  • Exposure to test automation in integration contexts
  • Familiarity with Azure DevOps or similar tools
Soft skills
  • Strong communication and collaboration skills
  • Ownership mindset and proactivity
  • Analytical thinking and problem-solving
  • Ability to translate complex systems into clear test cases

 

Client – why choose this particular client from the Jit portfolio?


Our Client has been in the business of providing safety and insurance for the maritime industry for over 160 years and is now the leading provider of security certification and audits. They offer a wide range of digital projects to increase safety and compliance with standards in industrial fields. Our Client's solutions are used in the maritime industry, from raw materials extraction, to anywhere else where there is a need for quality and compliance with norms and standards. We have been working with our Client since 2013, creating and maintaining applications that are utilized in high-risk areas like rigs, mines, and police units, striving to make the world a safer place. Our Client's commitment to safety, ecology, and quality, which has its roots in Scandinavian culture, is implemented on a global scale. 

 

About Jit Team


The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams.

 

Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

job_post.job_details

job_post.job_type

job_type.full_time

job_post.job_location

Gdynia

job_post.experience_level

experience_level.senior

job_post.remote_status

remote_status.hybrid

settings.client_contacts

Magdalena Drzewiecka

magdalena.drzewiecka@jit.team
ID: 4672 job_post.published_on: 11/06/2026
announcement.apply