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Senior QA Automation Engineer (.NET/C# | Microservices | Kafka)

Jit Team Gdynia, Pomeranian Voivodeship, Poland

remotefull-time

Salary: PLN 1,000 - PLN 1,200 / day

Posted Sep 11, 2026Apply by Oct 11, 2026

**Role & seniority: ** Senior QA Automation Engineer

**Stack/tools: ** .NET/C#, Playwright/Selenium, Kafka, microservices, Docker, Kubernetes; SQL, MongoDB, NocoDB; event-driven async testing (events/webhooks/websockets/push); Grafana/Prometheus/Loki, mTLS, IAM/SSO; k6, OWASP ZAP, Veracode; React.js (context).

**Top 3 responsibilities: **

  • Design, develop, and maintain automation test frameworks in .NET/C#

  • Build and run integration + end-to-end tests for distributed microservices

  • Validate event-driven/asynchronous workflows and investigate production issues (RCA)

  • Must-have skills:

    • Strong QA + automation experience; hands-on C# automation frameworks

    • Integration/E2E testing experience in microservices

    • Solid test strategy/design and documentation

    • Understanding of event-driven architectures and async communication; analytical troubleshooting

    • Agile experience and cross-functional collaboration (Dev/DevOps/Product)

  • Nice-to-haves:

    • Experience with Kubernetes/Docker, Grafana/Prometheus/Loki

    • Testing with security/performance tools (OWASP ZAP, Veracode, k6)

    • Experience with SQL + NoSQL (MongoDB) and relevant auth/security concepts (mTLS, IAM/SSO)

  • Location & work type: 100% remote from Poland; 2–4 office trips/year in Poland or Norway; B2B 1000–1200 PLN/day net.

Full Description

Salary: 1000 - 1200 PLN/day net on B2B

Remote: 100% remote, possibly 2–4 trips to the office in Poland or Norway per year

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 ensuring quality across a modern distributed platform built on microservices, event-driven communication, and multiple system integrations.

As a Senior QA Automation Engineer, you will play a key role in validating complex business workflows, integration points, and asynchronous processes. The position requires strong automation skills and the ability to test below the UI layer, working closely with Developers, DevOps Engineers, and Product Owners.

100% remote work from Poland with occasional business trips to Poland or Norway (approximately 2-4 times per year).

Responsibilities you'll have Design, develop and maintain automated test frameworks in .NET/C# Create and execute integration and end-to-end tests across distributed systems Validate event-driven workflows and asynchronous communication Test APIs, microservices and system integrationsInvestigate production issues and perform root cause analysis Collaborate closely with development, DevOps and product teams Create and maintain test documentation and test strategies Contribute to continuous quality improvement across the platform

Expected competences and knowledge Strong experience in software testing and quality assurance Hands-on experience with test automation using C# Experience building and maintaining automation frameworks Solid understanding of testing strategies, test design and documentation Experience with microservices architectures Strong integration and end-to-end testing experience Understanding of event-driven architectures and event-flow validation Experience testing asynchronous communication (events, webhooks, websockets, push notifications) Experience working with SQL and NoSQL databases Knowledge of Docker and Kubernetes Experience working in Agile environments Ability to work effectively within cross-functional teams Strong analytical and troubleshooting skills

Technologies you'll work with .NET / C# Kafka Kubernetes Docker Playwright / Selenium SQL MongoDB NocoDB Grafana Prometheus Loki mTLS IAM SSO k6 OWASP ZAP Veracode React.js

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.

.NETC#MicroservicesKafkaPlaywrightSeleniumSQLMongoDBDockerKubernetesIntegration TestingEnd-to-End TestingEvent-Driven ArchitectureAPI TestingAgileRoot Cause Analysismulti-location

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