Senior Software Engineer in Test (SDET)

Company: Hargreaves Lansdown
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Join to apply for the Senior Software Engineer in Test (SDET) role at Hargreaves Lansdown

Join to apply for the Senior Software Engineer in Test (SDET) role at Hargreaves Lansdown

This range is provided by Hargreaves Lansdown. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Excited to grow your career?

Our purpose is to empower people to save and invest with confidence. We are looking for great people to join us, so please come and invest in YOUR future at HL.

We know that sometimes people can be put off applying for a job if they don’t tick every box. If you’re excited about working for us and have most of the skills or experience we’re looking for, please go ahead and apply. We’d love to hear from you!

About The Role

Salary: Up to £75,000 dependent on experience

Join HL, the UK’s Number One Investment Services Company Hargreaves Lansdown (HL) is the UK’s leading investment services company, managing over £149.7 billion in assets on behalf of more than 1.86 million UK investors. HL is at the forefront of innovation and digital transformation in the financial services sector. This is your chance to genuinely stamp your mark on one of the UK’s most innovative and digital-focused businesses.

What You’ll Be Doing

As a Senior Software Developer in Test (SSDET) at HL, you will play a crucial role in building market-leading solutions for our clients.

You will:

Test Automation Development: Design, develop, and maintain automated test frameworks, tools, and libraries. Integrate, implement, and optimize automated testing strategies within our CI/CD pipelines.

Performance and Security Testing: Develop and execute performance and load test strategies to ensure the system can handle high volumes of traffic. Implement security testing practices to identify and mitigate vulnerabilities. Develop functional resilience strategies such as chaos engineering.

Quality Assurance: Support the team in conducting thorough testing of software applications, including unit, integration, system, and acceptance tests. Collaborate with developers to debug and resolve complex issues, including fixing bugs.

Test Planning and Execution: Translate product requirements into test strategies, architecture, and design decisions that ensure quality and non-functional requirements (NFRs) are considered upfront.

Collaboration: Work closely with other SDETs, Software Engineers, QA Analysts, and DevOps Engineers to integrate automated testing and quality into the development process. Participate in code reviews and provide feedback on testability and quality of code.

Continuous Improvement: Identify areas for improvement in the testing process. Stay updated with industry trends and technologies in test automation. Mentor and train SDET and Software Engineering team members in best practices for test automation and software quality.

Documentation: Contribute to test plans and strategies documentation. Maintain clear and comprehensive documentation for test automation frameworks and tools.

About You

We are looking for a talented individual who is passionate about quality and testing. You should have:

Education:

Bachelor’s degree in computer science, engineering, or a related field, or equivalent experience.

Experience:

Advanced experience in test automation development using tools like Selenium, JUnit, TestNG, Cypress, etc. Familiarity with performance testing tools such as Apache Bench, JMeter, or LoadRunner, or modern alternatives like K6, Gatling, Locust. Familiarity with BDD tools like Cucumber or SpecFlow.

Skills:

  • Proficiency in programming languages such as Java, Python, or TypeScript.
  • Experience with scripting languages for automation tasks.
  • Strong understanding of software testing principles and methodologies.
  • Familiarity with version control systems like Git.
  • Excellent problem-solving skills and attention to detail.
  • Strong communication and collaboration skills.

Preferred Skills:

  • Experience with performance testing tools like JMeter or LoadRunner.
  • Knowledge of containerization technologies like Docker and orchestration tools like Kubernetes.
  • Familiarity with cloud platforms such as AWS, Azure, or Google Cloud.
  • Experience in Agile/Scrum development environments.

Why Us?

Here at HL, we’re the UK’s number 1 investment platform for private investors, based in Bristol. For more than 40 years we’ve helped investors save time, tax and money on their investments.

To achieve our mission, we believe we have a workplace like no other, with constant learning, dynamic teams, and a great ethos. We’re steered by core values that promote service, quality, innovation, and opportunity in everything we do.

What’s On Offer?

  • Discretionary annual bonus* & annual pay review
  • 25 days* holiday plus bank holidays and 1-day additional Christmas closure time
  • Option to purchase an additional 5 days holiday per year at annual enrolment
  • Flexible working options available, including hybrid working
  • Enhanced parental leave
  • Pension scheme up to 11% employer contribution
  • Sharesave scheme – have a real stake in HL’s future
  • Income Protection & Life insurance (4 x salary core level of cover)
  • Private medical insurance*
  • Health care cash plans – including optical, dental, and out patientcare
  • Help@hand and an Employee Assistance Programme
  • Gympass – gym memberships and wellbeing apps available
  • Variety of travel to work schemes with free bike storage and shower facilities
  • An inhouse barista serving subsidised coffee and snacks
  • Join HL’s sports, I&D networks and volunteering groups (two paid volunteering days per year)
  • LifeWorks Discounts on services, restaurants and retailers

Hargreaves Lansdown is an inclusive employer that values diversity in its workforce. We encourage applications from all individuals without regard to race, religion, gender, sexual orientation, national origin, disability or age.

This role may also be available on a flexible working or part time basis – please ask the Recruitment & Onboarding team for more information.

Please note, we are unable to provide employment sponsorship to candidates.

Seniority level

  • Seniority level

    Mid-Senior level

Employment type

  • Employment type

    Part-time

Job function

  • Job function

    Finance and Information Technology

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Posted: April 11th, 2026