Senior Test Automation Engineer in London

Senior Test Automation Engineer in London

London Full-Time 52132 - 63716 £ / year (est.) On-site
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At a Glance

  • Tasks: Define and implement test automation solutions for critical applications in the energy sector.
  • Company: Join Expleo, a collaborative tech company focused on innovation and quality.
  • Benefits: Enjoy a supportive environment, competitive benefits, and access to accredited training courses.
  • Other info: Inclusive workplace committed to diversity and continuous improvement.
  • Why this job: Make a real impact by ensuring the quality of vital energy trading applications.
  • Qualifications: Experience in C# test automation and strong analytical skills required.

The predicted salary is between 52132 - 63716 £ per year.

  • Overview
  • 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

  • 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.

Essential skills

  • Programming & Platforms
  • C#
  • . NET
  • ASP. NET Core
  • SQL
  • JSON
  • XML
  • Testing & Automation
  • Reqnroll / Spec Flow
  • Microsoft Playwright
  • Wire Mock
  • Postman
  • Newman
  • Bruno CLI
  • Development & Delivery
  • Visual Studio
  • Git
  • Azure Dev Ops Repositories
  • Azure Dev Ops YAML Pipelines
  • Event Streaming & Messaging
  • Apache Kafka (Aiven)
  • Schema Registry
  • Avro
  • JSON Messaging
  • Rabbit MQ
  • Data & Observability
  • Microsoft SQL Server
  • Open Telemetry
  • Click Stack / Hyper DX
  • Click House
  • ELK Stack (Elasticsearch, Logstash, Kibana)
  • Desired skills
  • Excellent analytical and problem-solving capabilities.
  • Strong stakeholder communication and collaboration skills.
  • Familiarity with Azure Dev Ops, TFS, Jira or similar Application Lifecycle Management tools.
  • Exposure to observability and monitoring platforms.
  • Knowledge of event-driven and microservices architectures.

Experience

  • 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.

Benefits

  • Collaborative working environment – we stand shoulder to shoulder with our clients and our peers through good times and challenges
  • We empower all passionate technology loving professionals by allowing them to expand their skills and take part in inspiring projects
  • Expleo Academy - enables you to acquire and develop the right skills by delivering a suite of accredited training courses
  • Competitive company benefits
  • Always working as one team, our people are not afraid to think big and challenge the status quo

As a Disability Confident Committed Employer we have committed to

  • Ensure our recruitment process is inclusive and accessible
  • Communicating and promoting vacancies
  • Offering an interview to disabled people who meet the minimum criteria for the job
  • Anticipating and providing reasonable adjustments as required
  • Supporting 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

Senior Test Automation Engineer in London employer: Expleo

As a leader in Quality Engineering, we offer an inspiring and collaborative work environment where innovation thrives. Our commitment to employee growth is evident through the Expleo Academy, providing accredited training courses that empower our team to expand their skills and take on exciting projects. Located in a vibrant area, we foster a culture of inclusivity and support, ensuring that every individual can contribute meaningfully while challenging the status quo.

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Contact Details:

Expleo Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Test Automation Engineer in London

✨Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Expleo or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

✨Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Expleo.

✨Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Expleo.

✨Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Expleo that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Senior Test Automation Engineer in London

C#
Test Automation
BDD Methodologies
Gherkin Scenarios
CI/CD Integration
SQL
API Testing

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Expleo.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Expleo and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Expleo

✨Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

✨Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Expleo uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

✨Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

✨Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.