Software Engineer – Performance Testing

  • London OR Dublin
  • Engineering
  • Full-time
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We are looking for an Engineer to join an amazing group of technologists to help us performance test and tune Corda, Corda Enterprise and other products in the Corda ecosystem. Corda’s characteristics as a highly performant and scalable distributed system presents some interesting challenges around performance testing and tuning. As part of the team responsible for test tooling, you will be working closely with the core platform engineers to ensure we continuously test, verify and tune Corda’s performance.

You can work independently to research a problem domain to gain insight and subsequently deliver the work and solve the problem. Most importantly you are excited and motivated by the challenge of solving hard problems in a way that delivers to internal customers within Engineering as well as external customers. You are passionate about engineering and test automation and have experience with performance testing and/or tuning in a JVM environment.


  • Work as a member of the test tooling team delivering high quality code
  • Work with the core engineering teams to ensure the high performance requirements for Corda are meet
  • Work with the build engineering team to ensure performance and stress testing is an integral part of our build pipeline
  • Code review peers both within your team and in the wider organisation
  • Champion engineering excellence

Education and experience

  • Good understanding of engineering principles, most likely obtained through a combination of advanced academic study and professional experience
  • 2+ years experience in an enterprise level environment
  • Experience of multi-threaded programming and the challenges of concurrency
  • A strong understanding of the JVM
  • Experience with performance testing and/or tuning in a JVM environment
  • Familiarity of multiple layers of the infrastructure and application stack, particularly with distributed or message oriented systems
  • Proven problem solving skills and ability to work under pressure
  • At R3, we encourage a diverse and inclusive workforce. If you don’t meet all of the above criteria, but you think you’d be a great addition to R3, send us your CV. We’re always interested in meeting collaborative people who are excited to work with us.

Desirable Skills

  • Experience with Apache JMeter
  • Familiarity with RDBMs, e.g. Postgres, Oracle, MS SQL Server
  • Experience with Jenkins
  • Experience with AWS and/or Azure
  • Experience with Docker and Kubernetes


How We’re Handling Covid-19

We are extremely grateful to continue to grow as a company during these unprecedented times. Our #1 priority is the health, safety, and wellbeing of our current and future R3’ers. We want to share with you what we’re doing and what you can expect throughout our interview and on-boarding processes.

Since March, most R3’ers have been working remotely, although we have opened some key office locations global, with limited capacity for those that cannot work from home or need to come into the office.

As you go through the virtual interview process with us, please don’t worry if children or pets make a guest appearance. We understand these things happen- it’s real life after all! If we are fortunate enough to welcome you to the team, we’ll get a laptop couriered to you and get you set up virtually on your first day.  We also provide you with a “Work From Home” allowance to enable you to purchase some equipment to be more comfortable and productive.

We Have And Will Continue To Take Steps To Ease Some Of The Burden For Our R3’ers

We understand that Work From Home (WFH) life can be challenging in many ways, so some of the additional support measures we have in place include;

  • New Starter WFH allowance (as mentioned above) to get you setup to work productively at home
  • Additional access to wellbeing resources (as well as the support provided as part of your Vitality Private Medical) including a year’s free subscription to the Headspace app and modules on our Lessonly training platform from MindGym (including Goal getting, Stress Busters and Virtual Work)
  • We also have additional health and wellbeing resources available on our wiki pages when you join.

R3 may process the personal data collected or identified as being imported in accordance with R3’s Recruitment Privacy. Read the policy here. In particular, R3 will use the personal data provided for the purposes of processing your application for the role you have applied for, to assess your suitability for the role as well as to enter into a contract with you if you are successfully brought onto the R3 team.

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