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About the Role

This role is for a Senior QA Engineer focused on Performance & Scalability, responsible for owning performance across the platform, microservices, and event-driven flows. The position requires proactive performance management, defining thresholds, and identifying degradation issues.

Responsibilities

Own performance from day one, embedding performance thinking into the delivery plan before code is written.
Make performance testing a natural part of how teams build and ship, not a gate they hit at the end.
Own the thresholds, metrics, and SLOs that govern pass or fail.
Decide what a breach means, set budgets (latency, error rate, throughput), and make signals objective enough for pipeline action.
Design and build performance tests for individual services, stubbing downstream and third-party dependencies.
Map load to real production traffic to find where things bend and break.
Integrate performance testing into CI/CD to catch regressions automatically, early, and fast.
Own fail-fast signals and keep them trustworthy.
Build performance tests as code, reusable components, templates, and utilities that scale across teams and services.
Handle data seeding and test setup for repeatable and realistic runs.
Root-cause regressions across the stack, reading logs and tracing requests through distributed systems.
Engage stakeholders (engineering, platform, product) to turn findings into fixes and drive outcomes.
Raise performance and scalability risks early, challenge assumptions constructively, and influence decisions.
Say when a design won't scale before it ships.

Requirements

5+ years in performance engineering with a track record of owning performance across complex, modern systems.
Deep performance testing expertise, including designing realistic load models, running load, stress, soak, and spike tests, and interpreting results.
Hands-on depth with k6 for building and running performance tests.
Comfort with monitoring and observability tools like Datadog, Grafana, CloudWatch, and using them proactively.
Strong programming ability in at least one language (TypeScript preferred).
Understanding of microservices and distributed systems, including service-oriented architectures, dependencies, and testing services in isolation.
CI/CD fluency, with experience integrating performance testing into pipelines and keeping feedback fast and signals reliable.
Experience with AWS infrastructure is strongly preferred.
Strong communication and presence, participating fully in agile ceremonies and cross-team conversations.
Experience in fintech, wealth management, or regulated financial services is a plus.
Experience using AI-assisted tooling to accelerate performance work is a plus.
Contributions to internal quality guilds, communities of practice, or engineering culture initiatives is a plus.
Experience mentoring engineers on performance and testing best practices is a plus.
Operates with ownership and independence, proactively improving coverage, tests, and dashboards.
Treats the Wealth Management experience line as their own and holds themselves to high standards.
Acts as a quality enabler, making teams better at shipping reliable software.

Skills

Performance Engineering
Scalability Testing
Load Testing
Stress Testing
Soak Testing
Spike Testing
k6
Monitoring
Observability
Datadog
Grafana
CloudWatch
Programming
TypeScript
Microservices
Distributed Systems
CI/CD
AWS
Communication
Agile Methodologies

Location

UK-based

Work Type

Flexible working arrangements

Experience Level

Senior
5+ years

Salary/Compensations

£60,000 - £70,000 per annum

Benefits

Discretionary Performance-Related Annual Bonus
Workplace pension scheme (contributing 5% on earnings up to £50,000)
Private medical insurance (medical history disregarded)
Employee Assistance Programme
Cycle to work scheme
Season ticket loan
Free ChipX subscription for UK-based employees
28 days holiday plus bank holidays, plus the days between Christmas and New Year
Annual training budget for courses, workshops, or conferences
£30 per month Chip Fitness Benefit
Company laptop

About the Company

Chip's mission is to make your life wealthy.
We're building the wealth super app of the future, covering savings, investments, and pensions.
We use technology to break down barriers, enabling users to invest like the ultra-wealthy.
The Sunday Times listed Chip as the 6th fastest growing tech company in Britain.
Chip serves over 400,000 active customers and looks after over £6 billion in assets.
Chip is one of the most crowd-funded businesses in Europe, having raised over £50m from 29,000 investors.
Our vision is to be the most personal digital wealth manager in the UK.
Chip has a creative and diverse team of 180 people.
We have won awards including Best Personal Finance App at the 2022, 2024 & 2025 British Bank Awards.
Our Values: Be ACCOUNTABLE, Be BOLD, Be COLLABORATIVE.

Equal Opportunity

We are passionate and committed to our people and go beyond the rhetoric of diversity and inclusion.
You will be working in an inclusive environment and be encouraged to bring your whole self to work.
We will do all that we can to help you successfully balance your work and home life.
As a growing business we will encourage you to develop your professional and personal aspirations, enjoy new experiences, and learn from the talented people you will be working with.
It’s talent that matters to us and we encourage applications from people irrespective of their gender, race, sexual orientation, religion, age, disability status or caring responsibilities.