Software Engineer II

Job ID: 26014621Posted: 2026-10-06Location: BURGESS HILL, WEST SUSSEX, United KingdomJob Function: Engineering & ArchitectureSchedule: Full timeShift: DayWorkplace: HybridCareer Area: TechnologyCompany: American ExpressDescriptionThe 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.

We're looking for an experienced engineer to work with our Payment Application development team for mobile payments solutions that will be used by tens of millions of cardholders around the world. We want someone who is super creative and enjoys solving tough problems, with respect to architecture and cryptography. You should be able to come up with brilliant solutions that no one else can and be obsessive about payment security and user experience.

You'll be part of the Digital Payments Engineering team whose mandate is to develop new products and platforms for American Express customers. Payments Engineering's aim is to build interactive experiences at all touch points of a consumer's journey whether before, at, or after the time of purchase. The products will range from new payment vehicles and partnerships with other payment entities to interactive mobile experiences.

This is an opportunity to work in a fast-paced, agile environment within a Fortune 100 company where you can directly impact real $$$$ in revenue growth and operational savings. You will get a chance to interact with the apples and googles of the world. Your primary responsibilities will be to work on a team of engineers in developing mobile payment products.

You'll work with product managers to help define product direction, provide thought leadership on emerging technologies and create best of breed mobile and mobile web experiences that will set the standard for future development. You should be familiar with modern software development methodologies, and be able to dive deep and rapidly iterate on ideas despite ambiguity.

This is an opportunity to work on the latest mobile technologies and influence how millions of people interact with their cards, their merchants and their money.

ResponsibilitiesPerform hands-on architecture, design, development, and testing of EMV/AEIPS Payment Applications on JavaCard or Host Card Emulation Environments.

Work with external testing labs to get the developed payment product certifiedEngage in product innovation within Mobile Payment domainServe as a member of an agile team that drives user story analysis and elaboration, designs and develops software applications, and tests and builds automation toolsUtilize best-of-breed technologies to build a layered, component-based, service-oriented architecture over existing American Express technologiesBe highly motivated and maintain a positive, "can-do" attitude in a fast moving environmentFoster the spirit of collaboration across multiple internal teamsQualificationsBachelors degree in Computer Science/Engineering or 5+ years of equivalent experience in related disciplinesHands on Application development experience within JavaCard/HCE domain.

Working experience with cryptographic algorithms like 3DES, AES, RSA, ECC etc. Deep understanding of Global Platform card content management and key management processesKnowledge of EMV Common Personalization Specification and processes.

Nice to have working knowledge of different Key Management principles and associated processesNice to have some Android and iOS development exposure in light of Payment processingDemonstrated technical capabilities and ability to work collaboratively and effectively with a range of stakeholdersWorked in a product companyAttention to detail and strong organization skillsExperience working in high-performing development teams using agile methodologies and toolsExperience in multi-threaded programmingProven record of design and development of mobile applications in an Enterprise setting is a plusNon-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.

About the TeamAt 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. 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.