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Senior QA Engineer(Python with Jmeter)

LSEG (London Stock Exchange)

3 Locations permanent

Posted: February 23, 2026

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Quick Summary

A Senior QA Engineer is responsible for testing complex software products and developing the testing strategy, which involves applying business requirements and software testing lifecycles.

Job Description

Role Profile 

• The Senior QA Engineer is a member of the Product Engineering Team responsible for testing software developed for D &A Products; they apply business requirements and knowledge of software testing lifecycles to guide the testing of complex software products or customer solutions. The Senior QA Engineer contributes through their technical expertise and talent development. They work as a part of a Scrum team utilizing Continuous Integration and Behavior Driven Development and adopting DevOps practices while following a central QA test strategy and testing standards laid out for the division. 

Tech Profile/Essential Skills 

• 10 or more years’ experience in Software Testing with a minimum of 5 years API Testing experience

• Experience working with API automation testing tools (Python / Pytest, Postman and Postman Test scripts, JMeter).  

• Experience working with Jenkins or Test Rail or Gitlab or similar tools. 

• Knowledge of HTTP, Web API, REST, JSON, XML, XSLT, HTML, XPath, CSS. 

• High fluency in English with strong communication skills in verbal and written English. 

• Understanding of financial markets domain 

• Experience of managing and owning complex issues to resolution through working collaboratively with diverse teams. 

• Experience of maintaining effective communications with Technical and Business stakeholders within a challenging and fast moving landscape.  

Preferred Skills and Experience 

• Cloud Testing experiences (Azure, AWS). 

• SQL, Python/Pytest. 

• Experience of Integration testing across full lifecycle 

• Experience of working in software delivery methodologies such as Agile/Scrum 

• High fluency in English with strong communication skills in verbal and written English  

Detailed Responsibilities 

• Design and implement test plans for API/Web application based on business requirements and business use cases.  

• Build, maintain and update test scenarios and test cases based on the requirement specifications. 

• Document test cases using testing tools. 

• Perform and document risk analysis. 

• Perform manual and automated testing. 

• Record test progress and results.  Report results of automated and manual tests. 

• Maintain automated tests and troubleshoot issues in automated test scripts. 

• Discover bugs within software through functional and automated regression testing. 

• Identify, isolate, and record bugs throughout testing. 

• Identify any potential problems that users might encounter. 

• Track bugs through JIRA or other tools. 

• Provide daily, weekly status updates to leads and managers. 

• Create and build test plans, estimates and improvements to test process. 

• Review QA project artefacts including Test scenarios, Test Scripts, Defect reports and Status reports. 

• Familiar with Agile methodology. 

• Working alongside Product QA teams, Product Owners and Technical Product Managers to ensure clarity of requirements and appropriate levels of testing at each Integration test phase. 

• Working in partnership with Automation lead to ensure an appropriate suite of Automated Regression tests are established supporting an Automation first principle for Integration testing. 

• Being able to quickly understand technical challenges and represent QE in front of Key stakeholders. 

• Able to document processes and share knowledge

Career Stage:

Senior Associate

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

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