Quality Assurance Test Engineer

Overview

Connecting clients to markets – and talent to opportunity.With 5,400+ employees and over 80,000 institutional, commercial, and payments clients, we operate from more than 80 offices spread across six continents. As a Fortune 100, Nasdaq-listed provider, we connect clients to the global markets – focusing on innovation, human connection, and providing world-class products and services to all types of investors.Whether you want to forge a career connecting our retail clients to potential trading opportunities, or ingrain yourself in the world of institutional investing, StoneX Group is made up of four business segments that offer endless potential for progression and growth.

Corporate: Engage in a deep variety of business-critical activities that keep our company running efficiently. From strategic marketing and financial management to human resources and operational oversight, you’ll have the opportunity to optimize processes and implement game-changing policies.

Responsibilities

Position Purpose: 

We are seeking an experienced QA Engineer to play a critical role in shaping the next generation of StoneX’s global web platform. As part of our Websites Development team, you will help drive the evolution of our client-facing marketing ecosystem — built on modern, decoupled technologies including Kontent.ai (headless CMS) and Uniform (DXP/frontend orchestration).

You will ensure the seamless delivery of high-performing, scalable, and visually compelling web experiences used by clients around the world. While working at the intersection of legacy platform support and forward-looking innovation, helping guide our transition to a modern composable architecture. We’re looking for someone who thrives in dynamic environments, takes ownership, and is energized by building quality into every stage of development.

Primary Duties will include:

• Own quality across a modern web ecosystemLead testing efforts across our composable CMS platform (Kontent.ai + Uniform), ensuring high-quality releases that deliver exceptional user experiences across global marketing sites.

• Drive QA strategy in an Agile, distributed teamCollaborate daily within a globally distributed Scrum team spanning the U.S., London, Kraków, Bangalore, and Bogotá — contributing to sprint planning, estimation, test design, and release execution.

• Partner cross-functionally to elevate deliveryWork closely with Product, Marketing, Design, and Engineering to translate business requirements into robust, testable solutions. Ensure features are clearly defined, testable, and aligned with user expectations.

• Champion automation and quality engineering best practicesIdentify opportunities to expand test automation and improve efficiency, ensuring quality is embedded early in the development lifecycle — not just validated at the end.

• Support platform evolution and migrationPlay a key role in maintaining legacy systems while actively contributing to the migration toward a modern, headless architecture. Help identify risks, gaps, and opportunities throughout the transition.

• Ensure performance and scalability standardsValidate that all site components meet modern performance benchmarks, including Core Web Vitals, ensuring fast, accessible, and reliable user experiences.

• Deliver end-to-end ownership of qualityTake responsibility for features from concept through release — troubleshooting complex issues, driving timely resolutions, and ensuring adherence to development standards and best practices.

• Contribute to a culture of excellence and continuous improvementActively mentor, collaborate, and elevate team standards. Stay current with evolving QA tools, frameworks, and industry trends, bringing new ideas to strengthen our engineering capabilities.

Qualifications

To Land this role you will need

To succeed in this role, you are a high-impact Senior QA Engineer who combines deep technical expertise with strong ownership and a passion for delivering exceptional digital experiences:

• Proven experience in web quality engineering5+ years of hands-on experience testing complex, client-facing websites, with a strong understanding of modern web architectures and user experience expectations.

• Experience within CMS-driven environmentsSolid experience working with content management systems (ideally headless or composable CMS platforms), with the ability to validate dynamic, content-driven experiences at scale.

• Balanced QA skillset (manual + strategic)Comfortable leading manual testing efforts where needed, while contributing to test strategy, test design, and continuous improvement initiatives.

• Strong ownership and accountabilityDemonstrated ability to take initiative, operate independently, and drive quality outcomes across fast-paced, evolving projects — including ambiguity during platform migrations.

• Collaborative, team-first mindsetProven success working in cross-functional teams, with the ability to build strong partnerships across engineering, product, design, and business stakeholders.

• Excellent communication and influenceStrong verbal and written communication skills, with confidence presenting features, articulating quality risks, and engaging stakeholders across all levels of the organization.

• Leadership and mentorship capabilityExperience onboarding new team members, sharing best practices, and elevating team standards through knowledge sharing and example-setting.

What will make you stand out

• Deep understanding of modern web ecosystemsFamiliarity with component-based architectures, APIs, and feature-rich CMS platforms supporting high-traffic, global websites.

• Strong grasp of browser behavior and performanceExpertise in cross-browser and cross-device testing, with an understanding of modern browser capabilities, limitations, and performance optimization techniques.

• Agile and Scrum expertiseHands-on experience operating within Agile environments, actively contributing to sprint ceremonies, estimation, and delivery planning.

• Security-aware testing mindsetWorking knowledge of key security concepts such as authentication/authorization, API security, encryption, and certificate management.

• Experience with headless or enterprise CMS platformsExposure to platforms such as Kontent.ai, Uniform, Sitecore, Drupal, or similar modern CMS ecosystems is highly valued.

• Automation-forward thinkingFoundational understanding of test automation frameworks and the ability to identify opportunities to scale automation effectively.

• AI-enabled productivityDemonstrated use (or strong interest) in leveraging AI tools (e.g., Copilot, ChatGPT) to enhance testing efficiency, coverage, and quality insights.

Education

• Bachelor’s degree or higher preferably in Computer Science, Engineering, Information Technology, or a related discipline (or equivalent practical experience).

Work Environment

• Hybrid model: 4 days per week in-office, collaborating closely with a high-performing, globally distributed team.