**Description** At American Express, our culture is built on a 175-year history of innovation, shared values and Leadership Behaviors, and an unwavering commitment to back our customers, communities, and colleagues. As part of Team Amex, you'll experience this 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. **What are we looking for?** A Senior Engineer with experience leading scrum teams, building a great products and an interest in working with and uplifting legacy code. A role model that will pursue technical excellence and establish great engineering practices. You role will require you to work with our staff engineer to modernise the platform **What will you do?** Day to day, you will: + Build scalable services + Write high quality, functional code + Hands on refactoring with various scrum teams, increasing test coverage + Participant in feature refinement and solution design + Write automation tests for various applications across the stack + Be a key part in defining technical strategy and the architectural roadmap + Work with BI / ETL tools + Trouble shoot applications, improve metrics and monitoring + Build CI/CD pipelines in GHA (mainly in BASH) + Work with SRE to teams to remediate problems + Integrate our platform with partner systems to process financial transactions **What you will need:** + Expertise with the JVM (e.g. Java, Kotlin, Scala, etc.) + A proactive mind-set and the drive to lead and mentor your colleagues + Strong presentation skills and be able to teach others various software concepts such as Refactoring, DDD + Strong knowledge with observability frameworks / tools, e.g. OTEL, Dynatrace + COBOL experience is preferable, or a willingness to learn + Experience with legacy Java Applets (in order to decommission) + Solid grasp of BI tools, especially Microstrategy + Mainframe ETL tooling - Ab initio + Hands on knowledge in architecting and orchestrating a complex integration-heavy system + Be keen to learn new technologies and be able to articulate technical concepts to non-technical colleagues + You are conversant with RESTful web service design, Kafka, JMS or other messaging technologies. + Familiarity with JavaScript frameworks such as React/Redux, HTML5, CSS3 + To have worked with Spring(Boot), relational databases, cloud platforms and CI/CD pipelines + An understanding of reactive frameworks in Java, Vert.x preferable + You have experience with multiple JVM languages, functional programming, asynchronous programming, the concepts of clean code + An understanding of the importance of good unit, integration, and automated testing for all changesAn understanding of product development concepts, e.g. minimum viable product, design sprints, prototyping, A/B testing, etc. + Strong application security, data privacy, monitoring, observability, and traceability are part of your development mindset Depending on factors such as business unit requirements, the nature of the position, cost and applicable laws, American Express may provide visa sponsorship for certain position **Qualifications** 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:** Technology **Primary Location:** United Kingdom-West Sussex-Burgess Hill **Schedule** Full-time **Req ID:** 25016382