At American Express, we’re building the platforms that power how money moves globally. Modern Money Movement (M3) sits at the centre of that mission, enabling payment journeys across the company, from “Pay Your Amex Bill” and lending experiences to B2B payments, cross-border transactions, and emerging Stablecoin capabilities.
We’re looking for engineers who are excited by backend engineering, distributed systems, and solving complex technical challenges at scale. This is an opportunity to work on systems that process real financial transactions used by millions of customers and businesses worldwide.
What You’ll Work On
As a Software Engineer in M3, you’ll contribute to the development of highly scalable, event-driven payment systems that support critical financial workflows across the enterprise.
You’ll help build systems that power:
Consumer payment journeys
Lending and loan servicing capabilities
Business-to-business payments
Cross-border payment experiences
Stablecoin-enabled payment capabilities
You’ll work alongside experienced engineers who are passionate about building resilient, high-performance systems and creating a strong engineering culture.
Engineering Approach & Technology
M3 is built using modern backend architecture patterns designed to support highly scalable, resilient, and event-driven payment systems.
Our engineering approach includes:
Event Sourcing
CQRS
Event-driven microservices
Streaming and asynchronous processing patterns
You’ll gain hands-on experience building distributed systems and learn how to design software that is scalable, observable, resilient, and operationally robust.
Our core technology stack includes:
Kotlin
Quarkus
Kafka
PostgreSQL
Gradle
Join M3?
This is a strong opportunity for engineers early in their career to work on meaningful technical problems in a modern engineering environment.
You’ll gain exposure to:
Large-scale distributed systems
Event-driven architecture patterns
High-throughput backend engineering
Financial technology and payment systems
Modern JVM-based development practices
Most importantly, you’ll work with a team that values mentorship, technical growth, and collaborative problem-solving while building systems that directly power how money moves across the world.
Responsibilities
Build and enhance backend services supporting payment capabilities.
Contribute to event-driven applications and APIs.
Work as part of an Agile Scrum team, participating in sprint planning, stand-ups, backlog refinement, and retrospectives.
Collaborate closely with engineers, product partners, and stakeholders to deliver high-quality software incrementally.
Write clean, maintainable, and well-tested code.
Participate in code reviews and technical discussions to continuously improve engineering quality.
Learn modern distributed systems and software engineering practices.
Help improve platform reliability, performance, and developer experience.
Support production systems by troubleshooting issues and contributing to operational excellence practices.
A foundation in software engineering principles and backend development.
Experience with Java, Kotlin, or another object-oriented programming language.
Interest in distributed systems and scalable backend platforms.
Understanding of software development lifecycle concepts and Agile ways of working.
Ability to collaborate effectively within a cross-functional Scrum team.
Problem-solving skills and a willingness to learn new technologies.
Strong communication skills and a collaborative mindset.
Curiosity, ownership, and enthusiasm for engineering challenges.
Employment eligibility to work with American Express in the UK is required as the company will not pursue visa sponsorship for these positions.
About UsAt 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.
About the TeamWe 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.
American Express London, England Office
London, United Kingdom
