Senior Test Automation Engineer
Quick Summary
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
Expleo 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.
Responsibilities
~1 min read- →Define 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.
- Programming & Platforms
- C#
- .NET
- ASP.NET Core
- SQL
- JSON
- XML
- Testing & Automation
- Reqnroll / SpecFlow
- Microsoft Playwright
- WireMock
- Postman
- Newman
- Bruno CLI
- Development & Delivery
- Visual Studio
- Git
- Azure DevOps Repositories
- Azure DevOps YAML Pipelines
- Event Streaming & Messaging
- Apache Kafka (Aiven)
- Schema Registry
- Avro
- JSON Messaging
- RabbitMQ
- Data & Observability
- Microsoft SQL Server
- OpenTelemetry
- ClickStack / HyperDX
- ClickHouse
- ELK 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.
- Proven 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.
What We Offer
~1 min read
Location & Eligibility
About this job
- Posted
- 17 days ago
Listing Details
- Posted
- September 29, 2026
- First seen
- September 29, 2026
- Last seen
- October 16, 2026
Posting Health
- Days active
- 16
- Repost count
- 0
- Trust Level
- 24%
- Scored at
- October 16, 2026
Signal breakdown
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