Senior Software Development Engineer in Test

May 17, 2021

This is an opportunity to join the QA team of a creative, leading web
trading software company.

Caplin is the market leader in web trading technology and single-dealer
platforms. Its award-winning software enables its customers to build high-
performance web trading apps and to deliver real-time information, including
live prices, securely and reliably to those apps.

We have an immediate vacancy for a Senior Software Development Engineer in Test.
This is an outstanding opportunity for a person wanting to bring their skills to an
organization at the leading edge of web-based trading technology and with
blue-chip global financial clients.

The role

You will join an agile team of cross-disciplined developers and technical testers. 

The main area of focus will be development of effective automated tests and test frameworks supporting Caplin’s cutting edge web applications and customer implementations.

As a Senior Software Development Engineer in Test, you will:

  • Develop automated test cases and test frameworks for new functionality
  • This includes both functional and non-functional testing using a variety of open source tools and libraries. Such as JUnit, Jasmine, Karma, JMock, WebDriver, JBehave, etc.
  • Collaborate closely with other engineers, UX designers and product owners to define and implement unit, acceptance, integration and performance tests.
  • Contribute to and maintain the automated execution of test suites to provide quick feedback to the team.
  • Perform manual and exploratory testing to effectively identify issues and gaps in automated regression test cases.
  • Evangelise and articulate good testing practices for Agile projects including:
  • Requirements elicitation
  • Defining acceptance criteria with the team and stakeholders
  • Writing clean, re-usable and readable test code
  • Release preparation
  • Possess the ability to deal effectively with uncertainty and alternative points of view.
  • Raise, track and take ownership of issues and the release preparation process.

In addition, you will:

  • Line manage and mentor more junior QAs.  Mentoring especially with regard to automation.
  • Originate and manage quality improvement initiatives across Engineering

You should apply if:

  • You are self-motivated, enthusiastic, team player and keen to learn.
  • You want to work in a company where taking on additional responsibilities and stepping-up is rewarded, a place where you can make a name for yourself.
  • Excellent written and verbal communication skills with a genuine passion for technology.
  • Coding ability with an appreciation of design patterns – able to deliver effective, clean, maintainable and well-designed code in tight timescales.
  • You are passionate about code quality and advocate clean code principles.
  • Excellent testing instincts – You care about the smaller details, you have excellent debugging skills and have a natural curiosity for wanting to understand how things work.
  • A well-rounded technical tester wanting to build upon previous experiences and evangelises the principles behind the concept of the ‘testing pyramid’.
  • Just logging bugs is not enough for you - you want to understand them and what caused them.
  • Proven experience of researching and evaluating testing tools for teams.
  • At least 3 years of experience of working as a Senior Software Development Engineer in Test or similar technical role as an Automation Developer/Tester.
  • A degree in Computer Science / Software Engineering or similar technical degree from strong university/Computer Science department or equivalent demonstrable technical knowledge.



  • Excellent experience working with Java and/or JavaScript, and preferably also one of: C/C++ and scripting languages, e.g. Python, shell, Lua, etc.
  • Exposure to working on projects which deal with real time data and/or race conditions.
  • A good appreciation of complex, client-side web application development using JavaScript, HTML, CSS, and related technologies. Experience with NodeJS preferred.
  • Extensive hands-on experience with automation testing tools such as JUnit, Karma, Jasmine / WebDriver / JBehave / Cucumber for unit and acceptance testing.
  • Experience with build and continuous integration tools such as Jenkins and an understanding of designing build pipelines for projects.
  • Experience with performance testing and troubleshooting performance-related problems.
  • You contribute to open source projects (e.g. on Github).
  • Experience of working within an agile development environment (XP / Scrum).
  • Good knowledge of multiple operating systems (e.g. Unix and Windows).
  • Exposure to a product/API development environment is an added advantage.
  • Experience of working within the financial markets arena, or in other performance-sensitive domains.

Work with us!

Please send us your CV and Covering Letter to

Note: Applications are for individual applications only and all contact from unsolicited agents will be rejected.