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About the Role

As a Principal Software Developer in Test, you will leverage extensive knowledge of software engineering, automation, and performance testing to create bespoke solutions for clients. You will also take a leadership role, guiding your team and leading by example. This involves designing and developing automation or performance test frameworks, collaborating with clients on QA strategies, conducting technical QA health checks, leading and mentoring engineers, and recommending new tools and processes to enhance testing capabilities.

Responsibilities

Design and Develop: Build and support automation or performance test frameworks using the most appropriate solutions.
Collaborate with Clients: Work closely with clients to understand their requirements and create tailored QA strategies.
Provide Expert Insights: Conduct technical QA health checks to assess and improve client approaches to automation or performance testing.
Lead and Mentor: Guide a team of talented engineers, providing mentorship and technical leadership.
Innovate: Stay tool-agnostic, recommending new tools and processes to continually enhance our clients’ testing capabilities.
Deliver Excellence: Create clear, concise documentation and deliver impactful solutions that exceed expectations.

Requirements

Eligibility for Security Clearance
10+ years of experience in automation and/or performance testing
Extensive experience in a Consultancy or Managed Service environment
Proven leadership skills, including managing teams of technical testers
Hands-on experience with automation tools like Playwright, Selenium, Cypress, FlaUI, or Katalon
Proficiency in performance testing tools like JMeter, Gatling, K6, Neoload, or Webload
Strong coding skills in at least one language such as Java, TypeScript JavaScript, Python, C#, Scala, or PHP
Experience designing and building automation frameworks
Familiarity with Agile development environments (SCRUM, Kanban, TDD, BDD)
Implementing pipelines using common tooling such as Jenkins, ADO, GitHub actions, CirlceCI etc
Awareness of the latest developments in testing tools and design patterns
Experience with emerging technologies, e.g using AI/ML within your engineering projects
Familiarity with testing in cloud environments such as AWS, Azure or Google Cloud

Skills

Automation testing
Performance testing
Software engineering
Playwright
Selenium
Cypress
FlaUI
Katalon
JMeter
Gatling
K6
Neoload
Webload
Java
TypeScript
JavaScript
Python
C#
Scala
PHP
Agile development
SCRUM
Kanban
TDD
BDD
Jenkins
ADO
GitHub actions
CirlceCI
AI/ML
AWS
Azure
Google Cloud

Location

Hybrid

Work Type

Hybrid working

Experience Level

10+ years of experience

Benefits

25 Days of Annual Leave
Holiday buying scheme
Pension Plan: Employer-matched contributions up to 5%
Health Benefits: Comprehensive coverage for medical, dental, optical, and alternative therapies.
Fitness Support: Subsidised gym memberships and a bike-to-work scheme.
Commuter Benefits: Season ticket loans
Free Annual Rail Cards
Electric vehicle salary sacrifice scheme
Social Events
Training & Development
Support for certifications

About the Company

Scale Factory is an AI enablement consultancy focused on delivering quality-led AI-first foundations and embedding capability and excellence into client companies.
They help leaders move faster, take smarter risks, and pursue transformation.
Formerly Ten10, they combine deep roots in Quality with cutting-edge AI expertise to deliver robust, scalable foundations.
They offer exciting projects across various industries, tailored career growth opportunities, a supportive team culture, and flexibility through hybrid working.