Site Reliability Engineer II LONDON, United Kingdom(Hybrid) Job Description The Enterprise Technology Services organization partners with every part of the American Express business to power the company's growth and innovation with trust and efficiency, and drive competitive differentiation with speed. We support the delivery and operations of technology, digital, and data capabilities, platforms, and services globally. Specifically, our team is responsible for the company's technology engineering, architecture, and infrastructure, providing 24x7 support to ensure an uninterrupted, high-quality experience for customers and colleagues. We also provide product management for core enterprise platforms, and lead technology risk and information security, enterprise data governance and platforms, digital product and design, and enterprise AI platforms on behalf of the company. Site Reliability Engineer II collaborates with engineering teams to enhance system resilience, scalability, and performance through feature development, automation, architectural design, resiliency testing, and disaster recovery planning, while promoting best practices for continuous improvement. Responsibilities Collaborates with Software Engineering teams to design, develop, and implement features that enhance system resilience, scalability, and performance, while identifying and addressing potential system bottlenecks and failure points with guidance from senior colleagues Develops and implements automation tools and frameworks, including infrastructure as code (IaC) practices to streamline operational workflows, deployment processes, and infrastructure management, with guidance from peers and leaders Collaborates with senior engineers to contribute to the architectural design of systems, ensuring that reliability, scalability, and performance considerations are integrated into design discussions and decision-making processes Collaborates in the design and execution of chaos engineering experiments and other resiliency testing, analyzing results and implementing improvements to enhance system robustness and recovery capabilities, with guidance from peers and leaders Develops and implements of disaster recovery plans and business continuity strategies, ensuring systems can recover quickly and effectively from unexpected disruptions Collaborates with seniors to promote and implement best practices such as error budgeting, service-level objectives (SLOs), and service-level indicators (SLIs), contributing to a culture of continuous improvement and reliability Collaborates and co-creates effectively with teams in product and the business to align technology initiatives with business objectives Participates in a 24 by 7 on-call rotation team. Including working on a weekend shift rota at least once every 4-6 weeks Qualifications Education Qualifications: Bachelor's degree in Computer Science, Information Technology, Engineering, and/or comparable experience; advance degree preferred Knowledge of modern observability stack - Splunk, Elastic Search, Prometheus, Grafana Knowledge of containerization technologies (e.g., Kubernetes, Docker) and microservices architecture Knowledge of observability tools and methodologies, including experience with logging, monitoring, tracing, and performance analysis platforms Knowledge of cloud-based Site Reliability Engineering (SRE) practices and experience with public cloud platforms such as AWS, Azure, or Google Cloud Work Experience: Experience in software development, or technology operations, with a focus on Site Reliability Engineering Experience in Linux/Unix systems, object-oriented programming languages (e.g., Java), scripting languages (e.g., Python, Bash), and cloud platforms (e.g., AWS, Azure, GCP) Non-considerations for sponsorship: Employment eligibility to work with American Express in the UK is required as the company will not pursue visa sponsorship for these positions. At American Express, our culture is built on a 175-year history of innovation, shared values (https://www.americanexpress.com/en-us/company/who-we-are/) and Leadership Behaviors, and an unwavering commitment to back our customers, communities, and colleagues. From delivering differentiated products to providing world-class customer service, we operate with a strong risk mindset, ensuring we continue to uphold our brand promise of trust, security, and service. As part of Team Amex, you'll experience our powerful backing with comprehensive support for your holistic well-being and many opportunities to learn new skills, develop as a leader, and grow your career. Here, your voice and ideas matter, your work makes an impact, and together, you will help us define the future of American Express. We back you with benefits that support your holistic well-being so you can be and deliver your best. This means caring for you and your loved ones' physical, financial, and mental health, as well as providing the flexibility you need to thrive personally and professionally: Competitive base salaries Bonus incentives Support for financial-well-being and retirement Comprehensive medical, dental, vision, life insurance, and disability benefits (depending on location) Flexible working model with hybrid, onsite or virtual arrangements depending on role and business need Generous paid parental leave policies (depending on your location) Free access to global on-site wellness centers staffed with nurses and doctors (depending on location) Free and confidential counseling support through our Healthy Minds program Career development and training opportunities Offer of employment with American Express is conditioned upon the successful completion of a background verification check, subject to applicable laws and regulations. Job Info Job Identification 26009171 Job Category Technology Posting Date 06/11/2026, 10:21 AM Apply Before 06/19/2026, 05:00 AM Job Schedule Full time Job Shift Day Locations 123 Buckingham Palace Road, London, LONDON, SW1W 9SH, GB(Hybrid) Career Area Technology Return to Jobs List (https://careers.americanexpress.com/en/sites/CX\_1/jobs)