Senior Quality Assurance Specialist

La Fosse; Greater London; Hybrid; GBP 64,000 - 86,000; Full time

Job summary

La Fosse is seeking a Senior QA Engineer in London on a hybrid basis (2 days per week in the office). You will join a technology modernization program, ensuring quality across legacy and cloud systems and validating integrations, data flows and end-to-end functionality.

Responsibilities include hands-on testing across Java/CRM apps, API/integration testing with MuleSoft, and testing data pipelines in Microsoft Fabric and Power Automate.

Qualifications

• Hands-on software testing in complex environments.
• Experience with API and integration testing.
• Strong data testing and validation across systems.
• Familiarity with MuleSoft, Microsoft Fabric or Power Automate is a plus.
• Experience with Java or legacy technology is beneficial.

Responsibilities

• Deliver hands-on functional, integration and end-to-end testing across a complex tech stack.
• Test migrations from legacy Java platforms to modern CMS.
• Validate APIs, integrations and data flows across MuleSoft and connected systems.
• Support testing across Microsoft Fabric, including data validation and reconciliation.
• Test Power Automate workflows and integrations with business apps.
• Identify, investigate and manage defects through to resolution.
• Collaborate with developers, engineers and business stakeholders throughout the lifecycle.

Skills

Software testing

Quality engineering

API testing

Data testing

MuleSoft

Microsoft Fabric

Power Automate

Java testing

Legacy tech

Cloud platforms

Job description

Senior QA - £75,000 - Hybrid (2 days per week in London)

Please note: This role does not offer sponsorship so requires candidates to have the full right to work in the UK.

We are looking for an experienced Senior QA Engineer to join a business undergoing significant technology modernisation and transformation. The role will work across a varied technology estate, supporting the migration of legacy applications and the continued development of modern cloud and integration platforms.

You will be responsible for ensuring quality across several key technical areas, working closely with engineering, product and business teams to validate integrations, data flows and end-to-end functionality.

Key Technical Areas

• Testing across legacy Java and CRM-based applications, including functionality and data as services are migrated into the Salesforce ecosystem.
• CRM: Testing CRM based applications and integrations
• MuleSoft: Testing APIs and integrations across the MuleSoft platform
• Microsoft Fabric: Supporting the build-out of Microsoft Fabric, with a strong focus on testing data pipelines, transformations, integrations and overall data quality.
• Power Automate: Testing automated workflows and business processes developed using Power Automate.

Key Responsibilities

• Deliver hands-on functional, integration and end-to-end testing across a complex technology environment.
• Test migrations from legacy Java platforms to modern CMS.
• Validate APIs, integrations and data flows across MuleSoft and connected systems.
• Support testing across Microsoft Fabric, including data validation and reconciliation.
• Test Power Automate workflows and their integrations with wider business applications.
• Identify, investigate and manage defects through to resolution.
• Work closely with developers, engineers and business stakeholders throughout the development lifecycle.
• Help improve overall testing practices, quality processes and test coverage.

Key Experience

• Strong hands-on experience working within software testing / quality engineering.
• Experience testing within complex environments involving multiple integrated applications.
• Experience with API and integration testing.
• Strong understanding of data testing, including validating data as it moves between systems.
• Exposure to MuleSoft, Microsoft Fabric and/or Power Automate would be highly beneficial.
• Experience testing Java or working across legacy technology estates would be advantageous.
• Comfortable working across both legacy and modern cloud-based technologies.