Mattermost Logo

Mattermost

Senior Software Design Engineer, Testing Infrastructure

Posted Yesterday
Be an Early Applicant
Easy Apply
United Kingdom
Senior level
Easy Apply
United Kingdom
Senior level
Lead the transformation of test automation and quality engineering, defining strategies, establishing standards, and architecting intelligent testing frameworks for scalable systems.
The summary above was generated by AI
At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.
 
We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.
 
To learn more, visit www.mattermost.com

Mattermost is seeking a visionary Senior Software Engineer, Testing Infrastructure, to lead a company-wide transformation of test automation and quality engineering. In this highly visible role, you will serve as the technical lead for testing and quality, partnering directly with Mattermost’s founders, CEO, and engineering leadership to define and execute the next evolution of our testing strategy and infrastructure.

As a Senior Software Design in Testing Infrastructure, you will shape the technical direction for our test infrastructure, frameworks, and processes—enabling engineers across the company to deliver high-quality, reliable software with speed and confidence. Rather than focusing on implementing automated tests for individual features, your impact will influence how the entire organisation approaches testing and quality. You will establish standards, design scalable systems, and help foster a culture where quality is everyone’s responsibility.

You will work closely with engineering leadership to ensure testing systems are deeply integrated, observable, and intelligent—including the use of AI-driven capabilities to expand test coverage, accelerate analytics, and improve decision-making. You’ll design systems that make automated testing so intuitive and comprehensive that we should never need to manually test anything twice. Beyond infrastructure, this is a strategic and cross-functional leadership role that helps ensure our products meet the rigorous reliability and security expectations required by defence, intelligence, and critical infrastructure sectors.

Note for non-US applicants: If you are located in Canada, the UK, Germany, or Spain, please apply directly to the posting for your specific location. This ensures your application is routed to the correct hiring team.


Responsibilities Include:
  • Lead a company-wide transformation of test automation and quality engineering strategy, partnering directly with Mattermost’s founders and engineering leadership.
  • Define and own the vision and roadmap for Mattermost’s testing and quality engineering infrastructure.
  • Architect scalable, intelligent testing frameworks that integrate seamlessly into CI/CD pipelines and distributed engineering workflows.
  • Establish and enforce testing standards, best practices, and quality metrics across engineering teams.
  • Influence and mentor engineers to adopt shift-left testing, testability-focused design, and quality-first development practices.
  • Partner with engineering leadership to align testing strategies with product and platform roadmaps.
  • Design systems, tools, and processes that enable developers to create, run, and maintain high-quality automated tests with ease.
  • Lead the integration of AI/LLM technologies into the testing strategy—including intelligent test generation, analysis, and reporting.
  • Build visibility and trust in quality signals through advanced reporting and improved observability of product reliability and test effectiveness.
  • Drive continuous improvement by researching, evaluating, and championing emerging testing methodologies and technologies.
  • Foster a culture of technical excellence in testing architecture, ensuring quality is a shared responsibility across all engineering teams.
Requirements:
  • BS in Computer Science, Software Engineering, or a related field, with 7+ years’ experience in software testing, quality engineering, or test infrastructure development.
  • Proven experience defining and executing quality engineering strategy or leading test infrastructure initiatives for complex, full-stack systems.
  • Strong programming background in TypeScript, React, React Native, Go, and PostgreSQL.
  • Deep understanding of CI/CD pipelines, distributed systems, and cloud-based test environments.
  • Experience designing or architecting testing frameworks and developer tools that scale across large engineering organisations.
  • Strong expertise in end-to-end testing frameworks (e.g., Playwright, Cypress, Detox) and modern automation architecture.
  • Experience with API testing, performance testing, and security testing methodologies.
  • Knowledge of containerisation technologies (Docker, Kubernetes) and their application to automated testing.
  • Strong analytical and problem-solving skills with the ability to identify quality risks and develop effective mitigation strategies.
  • Excellent communication, collaboration, and influencing skills across cross-functional, global teams.
  • Experience mentoring engineers and leading quality-focused technical initiatives across multiple teams.
Preferences:
  • Experience with AI/ML technologies applied to software testing, including automated test generation and intelligent test analysis.
  • Contributions to open-source projects.
  • Knowledge of accessibility testing and inclusive design principles.
  • Previous experience working remotely with global teams.
  • Expertise in defence, intelligence, or security-focused workflows.

Mattermost takes a market-based approach to pay and pay may vary depending on your location. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.


Mattermost is an EEO Employer, we are a remote-first, open-source company.
 
We are continually working to expand our hiring in more countries and regions, ensuring compliance with local laws and regulations, which takes time.
 
Mattermost values your unique perspective—we welcome all applicants. We encourage individuals from all backgrounds to apply and are committed to assessing candidates based on their skills and qualifications. We do not tolerate discrimination against staff or applicants based on race, religion, national origin, age, disability, pregnancy status, veteran status, or other personal characteristics.
 
If you require accommodations during the interview process, please let us know—we’re happy to assist.

Top Skills

Cypress
Detox
Docker
Go
Kubernetes
Playwright
Postgres
React
React Native
Typescript

Similar Jobs

16 Minutes Ago
Easy Apply
In-Office
London, England, GBR
Easy Apply
Entry level
Entry level
Big Data • Cloud • Information Technology • Software • Database • Analytics • Big Data Analytics
The Marketing Development Representative will engage prospective customers, qualifying leads for sales, and support the sales and marketing teams, focusing on the German market.
Top Skills: Google DocsMs-OfficeWeb-Conferencing
16 Minutes Ago
Hybrid
Dunstable, Bedfordshire, England, GBR
Mid level
Mid level
Blockchain • Fintech • Payments • Consulting • Cryptocurrency • Cybersecurity • Quantum Computing
The Supplier Management Manager oversees supplier risk management, ensuring compliance with regulatory frameworks, managing supplier relationships, and providing actionable insights through metrics and reporting. Responsibilities include risk mitigation, stakeholder communication, and maintaining documentation for regulatory compliance.
17 Minutes Ago
Easy Apply
Remote or Hybrid
United Kingdom
Easy Apply
Senior level
Senior level
Artificial Intelligence • Cloud • Security • Software • Cybersecurity
Lead the Major Accounts Team at Datadog, driving new business and managing large expansion deals while mentoring Major Account Managers.
Top Skills: B2B TechnologySales Tools

What you need to know about the Belfast Tech Scene

If asked to name the birthplace of the RMS Titanic, you might not say Belfast. Similarly, if asked to name Europe's leading destination for foreign direct investment in new software development, Belfast might not come to mind. Yet, both are true. The city has emerged as a tech powerhouse, recently ranked among the best in the U.K. for tech careers — especially for software developers. It also leads the U.K. with the highest percentage of software development jobs advertised.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account