Haystack
QA Tester
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We're hiring for a rapidly growing fintech company that is building the wealth super app of the future, aiming to make wealth management accessible and simple for everyone. This organization is recognized as one of the fastest-growing tech companies in Britain, serving a large customer base and managing significant assets.
The Role
- Own performance and scalability across a platform with over 30 microservices and event-driven flows.
- Embed performance considerations into the delivery plan from the outset, rather than as an afterthought.
- Define performance thresholds, metrics, and SLOs, ensuring objective signals for automated actions.
- Design and build performance tests for individual services, simulating production load to identify breaking points.
- Integrate performance testing into CI/CD pipelines to catch regressions automatically and quickly.
- Root-cause performance regressions across the stack by analyzing logs and distributed traces.
- Act as the performance advocate in design discussions, architecture reviews, and incident retrospectives.
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What You'll Need
- 5+ years of experience in performance engineering, with a proven track record of owning performance across complex systems.
- Deep expertise in performance testing, including designing load models and interpreting results from load, stress, soak, and spike tests.
- Hands-on experience with performance testing tools like k6.
- Proficiency with monitoring and observability tools such as Datadog, Grafana, or CloudWatch.
- Strong programming ability, with a solid foundation in at least one language (TypeScript is used across the stack).
- Understanding of microservices, distributed systems, and the challenges of testing services in isolation.
- Fluency in integrating performance testing into CI/CD pipelines.
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What's On Offer
- Competitive annual salary of £60,000 - £70,000.
- Discretionary performance-related annual bonus.
- Comprehensive benefits package including private medical insurance, a workplace pension scheme with employer contributions, and an employee assistance program.
- Opportunities for professional development, including an annual training budget and flexible working arrangements.
Apply via Haystack today!
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