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Ciklum is looking for a Senior Manual QA Engineer to join our team full-time in Poland.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the role:

As a Senior Manual QA Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. The project focuses on maintaining and extending mission‑critical trading systems ensuring stability, scalability, and real‑time data integrity. You will work in a cross‑functional agile team, closely collaborating with developers, analysts, and DevOps to validate trading workflows, automate test coverage, and ensure consistent quality across high‑availability environments.

This role requires strong analytical and technical skills, experience with manual and automated testing of backend and UI components, and a proactive approach to process improvement and test design in complex financial systems.

Responsibilities:

• Design, plan, and execute manual and automated test cases for backend services and trading modules
• Ensure end-to-end system validation across multiple components and data flows
• Review and verify RESTful APIs using tools such as Postman, Swagger, or custom scripts
• Build and maintain automated regression test suites (e.g., with XUnit, NUnit, or similar frameworks)
• Collaborate with developers to ensure proper test coverage and defect resolution
• Participate in sprint planning, backlog grooming, and release validation activities in Jira
• Maintain and improve test documentation and procedures in Confluence / AsciiDoc
• Perform functional, regression, smoke, and integration testing in complex environments (multiple configurations and components)
• Validate network communication (TCP/IP) and ensure correct message flow between trading modules
• Support continuous improvement by identifying gaps in processes, documentation, and tooling
• Work closely with the QA Lead and product teams to ensure stable, compliant, and high-performing releases

Requirements:

• 5+ years of experience in QA / Testing, preferably in financial or trading systems
• Strong knowledge of software testing principles, including regression, integration, and system testing
• Experience with API testing (Postman, Swagger, REST clients)
• Solid understanding of SQL and ability to validate data consistency in MSSQL databases
• Familiarity with TCP/IP, socket communication, and message-based architectures
• Hands‑on experience in test automation (C#, Python, or Java-based frameworks)
• Proficiency in Jira (issue tracking, reporting) and Confluence for documentation
• Strong analytical mindset and attention to detail
• Excellent communication skills and ability to collaborate in a distributed team
• Experience with CI/CD integration for testing pipelines (GitLab, Jenkins)
• Familiarity with Docker and containerized test environments
• Knowledge of performance and load testing tools (JMeter, k6, etc.)
• Understanding of message brokers (Solace, Kafka, RabbitMQ)
• Experience in financial/trading domain testing and regulatory compliance validation
• Basic knowledge of monitoring tools for QA in microservice environments

What’s in it for you?

• Work on high-impact financial systems used by one of Europe’s leading exchanges
• Collaborate with strong cross‑functional teams (Dev, QA, DevOps, Product)
• Continuous learning through internal workshops, Udemy access, and on‑site collaboration with client teams
• Opportunity to shape QA processes and automation strategies from the ground up

About us:

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting‑edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.

With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward‑thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.

Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.

Seniority level

Mid‑Senior level

Employment type

Full-time

Job function

Engineering and Information Technology

Industries

IT Services and IT Consulting

Explore, empower, engineer with Ciklum!