Performance Test Engineer

If you also believe that everyone should be able to achieve their financial potential, then you’ll love contributing to CMC Markets’ company vision of providing the ultimate trading experience. Seize the opportunity to progress your career in the fintech industry by joining a global leader in CFD trading and share investing. Grow yourself personally and professionally with a company that’s growing with you, by global expansion and product offering.

If you care deeply about system performance and want your work to protect millions of real trades, this role offers meaningful impact from day one. At CMC Markets, performance is not an afterthought — it’s essential to trust, reliability, and market access.

Why You'll like working here

Just some of the reasons you’ll love working here include:

• Leave benefits: Enjoy your birthday off to spend time with family and friends, on us! Utilise a free annual charity day to give back to your community.

• $0 Trades: Staff & family trading accounts with CMC Markets Invest have access to the best brokerage rates in the market - $0 trades for all domestic and international equity orders!

• Continuous learning: Our L&D offering covers both technical and performance training, ensuring you're always learning new skills.

• Unlimited access to a dedicated benefits & wellbeing hub where you can save money through various retailer discounts, and make use of a variety of resources that will enhance your physical and mental wellbeing.

• Collaboration: We believe that great things happen when smart people work together, that’s why we’ve made the decision to work five days in the office.

• Office perks: Help yourself to free breakfast cereals, condiments, and coffee to fuel your workday. Our culture club provides opportunities for everyone whether you’re into fitness, pizza making classes, socialising or bringing out your competitive side in trivia or lawn bowls!

What you’ll be working on

You’ll lead performance and non-functional testing across critical trading platforms, ensuring they remain scalable, resilient, and responsive.

Your work will include:

• Designing and executing performance, load, stress, and scalability tests using k6
• Building and maintaining reusable performance testing frameworks and scripts
• Analysing results to identify bottlenecks across application, database, and infrastructure layers
• Partnering with developers to diagnose issues and validate performance improvements
• Testing cloud-native systems deployed in AWS
• Integrating performance testing into CI/CD pipelines
• Defining and monitoring performance KPIs and non-functional requirements
• Producing clear, actionable performance reports to support decision-making
• Supporting capacity planning and continuous performance improvement

What will help you be successful?

You enjoy digging into complex systems and translating metrics into clear insights. You’re confident challenging assumptions, comfortable collaborating across teams, and motivated by improving outcomes.

You’ll bring:

• Strong experience in performance and non-functional testing
• Hands-on experience using k6 and JavaScript-based test scripting
• Experience testing C#/.NET applications and APIs
• Solid understanding of AWS and distributed system architectures
• Confidence analysing performance metrics such as latency, throughput, and error rates
• Experience working in Agile environments with CI/CD pipelines

Experience with containerised environments, monitoring tools, or high-throughput systems will be highly regarded.

The things we live by

CMC Markets is powered by our people. We are an equal opportunities employer and are committed to creating a diverse and inclusive workplace, where our people feel confident to be themselves, feel valued and are able to do their best work. We don’t just value differences and unique perspectives, we seek them out and we invite them in, because we know it will lead to better outcomes for everyone

Click on the link to find out more about the things we live by at CMC Markets CMC Markets - Culture Video  

We’re always on the lookout for great people, so even if you don’t feel you are a 100% fit, apply with your up-to-date CV and we’ll consider you for this role and any other suitable opportunities across the business. 

 We look forward to hearing from you! 

Please be vigilant when applying for jobs online. CMC Markets will never request personal identification details, such as Date of Birth or Tax File Number prior to an offer being made. If your initial application is successful, regardless of whether you've applied directly or through an approved recruiter, you will always liaise with a representative from CMC's Talent Acquisition team. We will only discuss a role you have formally applied for via phone or email (CMC Markets email address); and never via Facebook or Telegram.