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# Senior Test Automation Engineer

- **Company:** Overviewexpleo
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Application Lifecycle Management, JIRA, Automation of Tests, Microsoft Azure, Big Data, C Sharp (Programming Language), Continuous Integration, Data Integration, Data Structures, DevOps, Elasticsearch, Team Foundation Server, Regression Testing, Logstash, Standard Sql, SQL Databases, Data Streaming, YAML, Event Driven Architecture, Gherkin, Apache Kafka, Kibana, Microservices
- **Published:** October 4, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-test-automation-engineer/50254209

## About the Role

YAML PipelinesEvent Streaming & MessagingApache Kafka (Aiven)Schema RegistryAvroJSON MessagingRabbitMQData & ObservabilityMicrosoft SQL ServerOpenTelemetryClickStack / HyperDXClickHouseELK Stack (Elasticsearch, Logstash, Kibana)Excellent analytical and problem-solving capabilities.Strong stakeholder communication and collaboration skills.Familiarity with Azure DevOps, TFS, Jira or similar Application Lifecycle Management tools.Exposure to observability and monitoring platforms.Knowledge of event-driven and microservices architectures.ExperienceProven experience in test automation engineering within Agile environments.Strong experience in C# test automation development.Experience creating and maintaining BDD frameworks and behaviour-driven test suites.Demonstrable experience building automated regression test packs and integrating them into CI/CD pipelines.Strong SQL skills with experience validating complex data structures and integrations.Experience testing APIs, event-driven systems
and distributed architectures.Experience using AI-assisted engineering and testing tools.Experience within energy, utilities or trading environments.Experience working within regulated enterprise environments.BenefitsCollaborative working environment - we stand shoulder to shoulder with our clients and ourpeers through good times and challengesWe empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projectsExpleoAcademy - enables you to acquire and develop the right skills by delivering a suite of accredited training coursesCompetitive company benefitsAlways working as one team, our people are not afraid to think big and challenge the status quoAs a Disability Confident Committed Employer we have committed to:Ensure our recruitment process is inclusive and accessibleCommunicating and promoting vacanciesOffering an interview to disabled people who meet the minimum criteria for the jobAnticipating and providing
reasonable adjustments as requiredSupporting any existing employee who acquires a disability or long term health condition, enabling them to stay in work at least one activity that will make a difference for disabled people"We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age".We treat everyone fairly and equitably across the organisation, including providing any additional support and adjustments needed for everyone to thrive #J-18808-Ljbffr

## Description

OverviewExpleo is seeking an experienced Senior Test Automation Engineer to join our Digital Assurance practice, supporting a key client within the energy trading sector. This role will be responsible for defining and implementing robust test automation solutions, ensuring the quality, reliability and performance of business-critical applications and data platforms.The successful candidate will combine strong automation engineering capabilities with excellent analytical skills to deliver high-quality testing solutions across complex systems, data integrations and event-driven architectures.ResponsibilitiesDefine test strategies, coverage models and acceptance criteria from functional and non-functional requirements.Design, develop and maintain automated test frameworks and regression test suites.Develop test automation solutions using C# and BDD methodologies.Create and maintain robust Gherkin scenarios and step definitions.Determine the optimal balance between manual and automated
testing, typically operating within a 70:30 automation-to-manual testing approach.Integrate automated tests into CI/CD pipelines and development workflows.Perform testing of large datasets, data flows and data mappings.Execute test cases, analyse results and clearly communicate defects, issues and risks.Utilise approved AI-assisted tools to support test design, exploratory testing, automation development, analysis and reporting.Critically review and validate AI-generated outputs to ensure adherence to quality, security and development standards.Collaborate closely with developers, analysts and business stakeholders within Agile delivery teams.Drive continuous improvement initiatives while adhering to the client's development lifecycle and quality standards.Essential skillsProgramming & PlatformsC#.NETASP.NET CoreSQLJSONXMLTesting & AutomationReqnroll / SpecFlowMicrosoft PlaywrightWireMockPostmanNewmanBruno CLIDevelopment & DeliveryVisual StudioGitAzure DevOps RepositoriesAzure DevOps