About IRIS

As one of the UK’s largest privately held software companies, IRIS Software Group exists to simplify the lives of businesses, schools, and organisations. Our operational software is the invisible but essential heartbeat of our customers' success—ensuring critical tasks are handled right the first time, every time. We help businesses run the tough stuff, stay compliant, and focus on productivity and growth.

About the Role

We are seeking an experienced End to End Performance and Quality Lead to drive resilience and integrated quality across complex, business-critical software solutions. You will lead the design, execution, and optimisation of strategies that ensure performant, scalable, reliable, and seamless end-to-end customer experiences.

This role requires a mix of technical expertise, leadership, and collaboration, working closely with engineering, DevOps, and product teams to establish robust validation frameworks and deliver solutions that perform under pressure.

Key Responsibilities

• Define and own the end-to-end performance and quality strategy (speed, responsiveness, stability, scalability, load, and stress).
• Lead end-to-end testing efforts across multiple integrated systems and platforms.
• Collaborate with architects, developers, and DevOps to ensure performance is built into solutions from the ground up.
• Select, implement, and optimise testing tools, frameworks, and automation.
• Develop performance benchmarks, KPIs, and reporting dashboards for stakeholders.
• Mentor and guide engineers, promoting best practices in test design and execution.
• Conduct root-cause analysis of performance bottlenecks and recommend optimisations.
• Ensure compliance with quality and security standards throughout the testing lifecycle.
• Assist in troubleshooting performance or load issues, then triage through a defect process to ensure timely resolution.
• Identify environment needs to enable end to end performance.
• Apply strong problem-solving, decision-making, and critical-thinking skills under pressure.

Skills & Experience

• Proven track record (7+ years) in End to End Performance and Quality validation and optimization within the application and cloud native tachnologies. .
• Strong experience with end-to-end testing across enterprise-scale or SaaS applications.
• Hands-on expertise with performance testing tools (e.g., JMeter, LoadRunner, Gatling, Locust).
• Proficiency in test automation frameworks and scripting languages (e.g., Java, Python, JavaScript).
• Solid understanding of cloud platforms (AWS, Azure, GCP) and CI/CD pipelines.
• Strong analytical and problem-solving skills, with ability to interpret performance metrics.
• Excellent leadership, communication, and stakeholder management skills.
• Proven experience in problem management and operational resilience.
• Familiarity with modern performance engineering analytical tools and APM practices.
• Excellent communication and collaboration skills – able to work effectively across functions and with customers.
• Strong leadership traits – decisive, calm under pressure, and ready to step into a formal leadership role.
• Strong critical thinking, decision making and strong aptitude to get beyond resolution to the root cause of prevention
• Experience in leveraging AI tools to optimize and improve.

Desirable

• Previous experience managing or mentoring engineering teams.
• Exposure to Applications Resilience, DevOps/SRE frameworks (eg. SLA, SLOs, error budgets)
• Certifications in performance engineering and tuning
• Recognized for determination, persistence, tenacity and relentless pursuit to continuously improve.

What We Offer

• Opportunity to work on mission-critical software used by thousands of businesses and organisations.
• A collaborative environment that values innovation, ownership, and continuous improvement.
• Competitive salary and benefits package.
• Career growth and leadership development opportunities.