Senior Performance Engineer

• We are growing!
• Join us in the new year
• Enjoy a variety of work

The Post Gold Awards - Employer of the Year 2026 Finalist: We're proud to be a finalist in the 2026 Post Gold Awards. This recognition reflects our commitment to creating a workplace where people feel supported, valued, and empowered to do their best work.

About Us

At Assurity, we're all about helping our clients deliver better business outcomes through smart, sustainable IT solutions. As a Senior Consultant you'll take the lead in shaping how testing and quality engineering come to life across a range of exciting projects and client engagements. You'll work directly with clients, helping them design, implement, and optimise testing strategies that deliver real value, and you'll play a key role in lifting testing capability within Assurity and across the wider ICT community.

What you'll be doing

As a Senior Consultant, you'll take the lead in shaping and delivering performance engineering practices across a variety of projects. You will work on a mix of client engagements of varying durations and team sizes, sometimes with a large team on a long-term engagement, sometimes by yourself on a short project. From designing realistic workload models to analysing complex system behaviour, you'll play a key role in ensuring our technology performs seamlessly under pressure.

You'll work closely with engineers, architects, and stakeholders to identify performance risks early, provide actionable insights, and drive optimisation across systems. You'll also contribute to evolving our performance engineering approach, including exploring how emerging technologies like AI/ML and agentic systems can enhance what we do.

What you'll bring

• A proven track record in using performance testing tools such as JMeter, NeoLoad, and LoadRunner.
• Strong scripting and coding capability in languages like Perl, Groovy, Java, JavaScript, or Shell, with a focus on writing clean, maintainable code.
• Skilled at test engineering, workload modelling, performance analysis, and insightful reporting.
• Capability in estimating resources and effort for large-scale initiatives.
• Recognised expertise in analysing and optimising performance across a wide range of technologies and architectures.
• Confidence in configuring and using enterprise monitoring and APM tools.
• A collaborative approach, with an interest in exploring emerging trends in performance engineering, including AI/ML and agentic applications.
• Comfort working across different delivery methodologies and managing competing priorities in fast-paced environments.
• Excellent communication skills, with the ability to influence decisions and guide change across multi-vendor programmes.
• Experience shaping problem statements and delivering presentations..

Apply today! We are reviewing applications as they are submitted and may close the role early. Applicants must be in NZ already and have the rights to work in NZ.

Why Assurity

At Assurity, we believe quality is about more than technology, it's about people. In a time of rapid technological change and advancing AI, you'll join a consultancy that puts human-centred thinking at the heart of delivery and actively challenges the status quo to deliver better outcomes.

Here's what you can expect:

• Help shape some of New Zealand's most significant digital programs.
• No two clients or projects are the same, you'll always be learning and growing.
• Join a community of quality engineering specialists who share knowledge, back each other, and love solving problems together.
• Opportunities to lead, mentor, and contribute thought leadership through client engagements, events, and industry conversations.
• A values-driven culture: We care, we challenge, we value potential, we lead, and we delight. These aren't just words, they guide how we work every day.

We're investing in building AI capability across our team through structured learning, hands-on experience, and continuous development, giving you the confidence and skills to use AI as part of your everyday toolkit - you'll also have access to leading AI tools that enhance productivity, improve quality, and support better client outcomes, while continuing to grow your own expertise.

We use AI to complement our work, not replace it. You're welcome to use AI to help with your application, but we want to hear about you and your experience. Please make sure your application reflects your own work, with specific examples of the projects you've delivered, the size and scale of them, your role in them, and the tools and systems you've used.