Meet the standards for usability, performance, resilience and security that your users expect across all devices and platforms.
Non-functional risks such as poor performance, instability under load, security vulnerabilities, or inaccessible experiences are often discovered too late.
We provide practical, end-to-end non-functional testing across performance, security, accessibility and usability.
Using certified testers, AI, and enterprise-grade tools, we spot issues early, so your systems are stable and secure. This helps you meet service level agreements and provide a consistent and safe digital experience.
Keep your apps fast, resilient, and reliable, even under peak loads, with AI-powered performance testing
Ensure your apps are compliant and accessible to everyone with intelligent accessibility and usability testing.
Proactively detect threats and safeguard customer trust with cyber security testing.
Resillion helped a leading UK energy supplier achieve compliance with the market-wide half-hourly settlement (MHHS) reforms by delivering end-to-end functional and non-functional testing.
Our team validated APIs, interfaces, and high-volume data flows under real-world conditions, simulating peak loads and ensuring system stability, scalability, and accurate data processing.
The result was assured regulatory compliance, reliable up-to-the-minute consumption data, reduced operational costs, and a scalable testing foundation to support future innovation.
Why organisations choose Resillion for non-functional testing:
We connect performance, security, accessibility and usability testing, so risk doesn’t hide in the gaps between teams and tools.
Shift-left and shift-right delivery aligned to Agile/DevOps and CI/CD, not a last-minute test phase
Certified specialists supported by AI and enterprise-grade tooling to find issues earlier and test smarter at scale.
We test across devices, platforms, ecosystems and operating conditions, so what passes in test also performs in production.
Clear, auditable reporting that supports SLAs, governance and compliance.
Cyber capability alongside QA to improve resilience, not just functional correctness.
Access to a global team to ramp quickly, support complex programmes and maintain continuity.
Fully managed delivery or targeted support to strengthen in-house teams, depending on maturity and release pressure.
of mobile site visitors will leave if a page takes longer than 3 seconds to load
of midsize and large enterprises report that one hour of downtime costs more than $300,000
When non-functional testing is left until late in the delivery cycle, teams often ship with sluggish user journeys and unstable services. Security exposures and accessibility gaps can often cost far more to remediate and can impact brand and trust.
By embedding performance, security, accessibility and usability testing across the delivery lifecycle, you can de-risk your launches.
Expert in Test Governance and Non-Functional Testing
With 30 years of experience, Dan brings a deep and broad understanding of software quality and how to test it effectively.
Expert in Test Automation, ETL, Performance Testing and Delivery Strategy
Elliot is a Quality Engineering professional with over 27 years of experience delivering enterprise-scale testing and quality solutions across complex technology environments.
Take a look at our other testing services under Digital Assurance, such as:
Testing support services
Providing solutions in a unified, structured approach across all critical domains to enable end-to-end quality.
Providing solutions in a unified, structured approach across all critical domains to enable end-to-end quality – Because we’re the only ones who can.
