Java Engineer

American Express

Location: West Sussex

Job Type: Full time


You won’t just keep up, you’ll break new ground.

American Express Global Network Platform authorizes and processes millions of payment transactions every day. The Card Network platform is the critical backbone for all of American Express payment transactions and is a real time low latency system that is always available and highly resilient, processing transactions from around the world 24x7, 365 days a year. Connected to the core network, there’s a number of key customer facing systems that power the American Express brand for key spending channels such as mobile payments and e-commerce. We develop and deliver functionalities for both the core and the customer facing systems and are looking for engineers to be part of our high-skilled team.

As part of our diverse tech team, you can architect, code and ship software that makes us an essential part of our customers’ digital lives. Here, you can work alongside talented engineers in an open, supportive, inclusive environment where your voice is valued, and you make your own decisions on what tech to use to solve challenging problems. As an Engineer, you will be part of a scrum team building core features and functions of the payment network systems/platforms deployed in a private cloud.

The ideal candidate:

  • Hands-on expertise with Java application design, software development and automated testing
  • Worked in an agile delivery team and is familiar with the processes and ceremonies
  • A drive to learn industry leading/innovative technologies and solutions
  • Open to innovation and experimentation, engage in fun and outcome oriented culture, and is always ready to try new concepts without fear of failure
  • Team-oriented, enabling the team to be more effective and productive
  • Excellent written and verbal communications skills

Tech stack:

  • Java microservices for high-availability systems
  • Scalable applications running on Vert.x, Spring Boot or similar
  • Java 8, RxJava, Reactor, Kafka
  • API Gateways
  • Relational Databases: Oracle, Postgres (or similar)
  • NoSQL: Redis, Couchbase, Cassandra
  • High performance cloud infrastructure (PaaS)

Key Responsibilities:

  • Design and coding of user stories for distributed, scalable, high performant and systems using Java
  • Debug software components and identify code defects for remediation
  • Contribute to the deployment, support and monitoring of software across test, integration and production environments
  • Collaborate with peer technology teams across different locations

Offer of employment with American Express is conditioned upon the successful completion of a background verification check, subject to applicable laws and regulations.

Minimum Qualifications:

  • University Degree in computer science, computer engineering or equivalent experience
  • Intermediate technical skills in the areas of microservices, APIs and Java 8 (or later)
  • Considerable hands-on experience on enterprise software development


  • Significant hands-on experience on enterprise software development
  • Knowledge in microservices using RESTFul APIs and relational/NoSQL databases
  • Designing and building Cloud native applications for cloud platforms using Docker, Kubernetes and OpenShift
  • Messaging and distributed systems using Kafka
  • Financial Transaction knowledge – ISO8583 messages, Payment Authorizations, Acquirers, Payment Networks, Issuers, Processors

Why American Express?

There’s a difference between having a job and making a difference.

Amex have been making a difference in people’s lives for over 160 years, backing them in moments big and small, granting access, tools, and resources to take on their biggest challenges and reap the greatest rewards. We’ve also made a difference in the lives of our people, providing a culture of learning and collaboration, and helping them with what they need to succeed and thrive. We have their backs as they grow their skills, conquer new challenges, or even take time to spend with their family or community. And when they’re ready to take on a new career path, we’re right there with them, giving them the guidance and momentum into the best future they envision.

When you join #TeamAmex, you become part of a diverse community of over 60,000 colleagues, all with a common goal to deliver an exceptional customer experience every day. We back our colleagues with the support they need to thrive, professionally and personally. That’s why we have Amex Flex, our enterprise working model that provides greater flexibility to colleagues while ensuring we preserve the important aspects of our unique in-person culture. Depending on role and business needs, colleagues will either work onsite, in a hybrid model (combination of in-office and virtual days) or fully virtually.

Because we believe that the best way to back our customers is to back our people.

The powerful backing of American Express.

Don’t make a difference without it.

Don’t live life without it.

To complete your application please click on the links below. However, if you require any assistance with the completion of this process – or need any reasonable adjustments to be made – then please contact the Recruitment Team on

You’ve got this!