Senior QA Test Engineer – .NET Apps, Hybrid London

Adecco; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A leading financial services client in London seeks an experienced Application Tester to join a Dev Support team on a 6‑month hybrid contract in London (Harbour Exchange). The role focuses on hands-on testing across .NET/C# apps, SQL databases, API tests and test governance.

Responsibilities include creating test plans, executing functional and non-functional tests, managing defects, and supporting UAT with business users.

Qualifications

• Strong commercial experience in application/software testing.
• Experience with SQL Server and/or Oracle.
• Strong SQL and data validation skills.
• Experience with API testing and batch processing.
• Experience testing .NET/C# applications.
• Good understanding of functional, regression and non-functional testing.
• Experience with Azure DevOps, Xray and/or JIRA.
• Strong defect management and test documentation experience.
• Comfortable working with business users and supporting UAT.
• Strong communication skills and the ability to work across technical and business teams.

Responsibilities

• Test applications primarily developed using MS .NET / C#, backed by SQL Server or Oracle databases.
• Understand business requirements and create detailed test plans and test cases.
• Perform functional and non-functional testing.
• Carry out regression, defect, emergency change and production testing.
• Perform API testing, data validation and batch process testing to ensure end-to-end system integrity.
• Manage defects and testing activities using Azure DevOps, Xray and JIRA.
• Support UAT and work closely with business users.
• Collaborate with Production Support, Release Management and Change teams to ensure robust QA delivery.
• Ensure suitable testing environments and test data are available.
• Run regression testing for weekly/monthly releases and hotfixes.
• Design and maintain test results dashboards, providing visibility of test progress and key quality metrics to stakeholders.

Skills

Application testing

SQL

API testing

.NET/C#

Azure DevOps

JIRA

Xray

UAT

Test documentation

Test plans

Data validation

Regression testing

Tools

Azure DevOps

JIRA

Xray

Job description

A leading financial services client in London seeks an experienced Application Tester to join a Dev Support team on a 6‑month hybrid contract in London (Harbour Exchange). The role focuses on hands-on testing across .NET/C# apps, SQL databases, API tests and test governance.

Responsibilities include creating test plans, executing functional and non-functional tests, managing defects, and supporting UAT with business users.