Jobs in Lublin, Poland

900-1100 PLN/MD on B2B

100% remote or flexible hybrid work from offices in Gdynia, Warsaw, Kraków, or Rzeszów

• 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-life balance
• The Jit.QA community will bring you a nice time during regular meetups

You will be a part of digital transformation in safety industry. The client are taking the initiative to develop and expand their web development competence, with the goal of enhancing our digital service portfolio.

In this project you will join a cross-functional team responsible for testing and quality assurance of a modern, distributed platform supporting large-scale data processing and IoT integrations. The project combines microservice-based architecture, event-driven communication (Kafka), and hybrid deployment models (cloud + on-premise). The system handles secure data flows, authentication layers, and real-time data synchronization across multiple environments.

• Design and maintain structured, traceable test scenarios aligned with business and technical requirements
• Test distributed microservice-based systems, integrations, and end-to-end workflows
• Develop and execute automated test pipelines integrated into CI/CD workflows
• Conduct performance and security testing for containerized and ETL processes
• Validate data integrity across SQL and NoSQL databases, including IoT sensor data
• Perform frontend testing of React.js applications and asynchronous features (events, webhooks, websockets)
• Execute live validation and smoke tests in production-like environments
• Collaborate closely with developers, DevOps engineers, and product owners to ensure system stability and quality
• Participate in root cause analysis and contribute to continuous quality improvement
• Support the design and extension of custom testing frameworks (preferably in C# or other OOP languages)
• Apply risk-based testing approaches and maintain test documentation that scales with distributed architectures
• Contribute to maintaining high security and compliance standards across testing activities

• 5+ years of relevant professional experience as QA Engineer
• Experience supporting the design and extension of custom testing frameworks (preferably in C# or other object-oriented languages)
• Proven experience designing structured and traceable test scenarios (risk-based testing, test case mapping, coverage tracking)
• Solid understanding of distributed systems and microservice-based architectures
• Experience testing containerized environments (Kubernetes, Helm)
• Strong background in security and compliance testing (mTLS, IAM, SSO)
• Hands-on experience with performance and load testing tools (e.g. JMeter)
• Knowledge of event-driven systems (Kafka; ActiveMQ or MQTT is a plus)
• Familiarity with Agile methodologies (Scrum/Kanban) and CI/CD workflows
• Strong collaboration and communication skills in cross-functional teams
• Experience mentoring or leading testing activities
• ISTQB-level knowledge of software testing principles (formal certification not required)

• Selenium
• Playwright
• C#
• Kubernetes, Helm, Docker
• Kafka, ActiveMQ, MQTT
• JMeter, Prometheus, Grafana, Loki
• SQL Server, MongoDB, NocoDB, ArangoDB

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.

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 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme.

Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.