Sr Software Engineer I

Joining Amex Tech means discovering and shaping your contribution to something big. Here, you can work alongside talented tech teams and build a unique career with the Powerful Backing of American Express. With a range of opportunities to work with the latest technologies, and a commitment to back the broader engineering community through open source, our mission is to power your success. Because Amex Tech is powered by our technology, our culture, and our colleagues.​ ​The Technology organization enables and accelerates the company’s growth strategies, delivering global capabilities and services in support of Amex’s customers and colleagues, while maintaining 24/7 servicing and availability to ensure an uninterrupted, high-quality customer experience. Technology provides the foundation for everything we do in the company while driving differentiation through building and leveraging innovative technology and data insights.​ The U.S. Consumer Services and Membership Digital Experiences Technology team (USCDT) brings together foundational strategic technology capabilities in digital experience engineering (Mobile and Web), marketing and advertising technology, enterprise communications, travel and lifestyle, and dining technology. It employs a ground-breaking focus with development responsibilities for customer-facing capabilities that deepen and expand digital engagement, as well as core technical capabilities that cut across business lines and customer segments. We’re looking for an experienced Sr. Engineer l to work on the 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. You should be able to come up with brilliant solutions that no one else can, and be obsessive about UI/UX design 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 web experiences. ​ Responsibilities

Strong proficiency in Java 8+ with extensive experience developing enterprise-grade applications. Hands-on experience with Kotlin for backend application development. Strong knowledge of modern Java features, including Streams API, Completable Future, lambda expressions, functional programming concepts, and the Java Concurrency framework Strong understanding of object-oriented design principles, SOLID principles, and common design patterns. Experience designing and developing RESTful APIs and microservices. Experience implementing secure application development practices, including JSON Web Encryption (JWE) and industry-standard encryption mechanisms for protecting sensitive data in transit and at rest. Working knowledge of cryptographic concepts and standards, including JWE, JWT, JWS, TLS/SSL, AES, RSA, digital signatures, key management, and certificate-based authentication. Experience building scalable, resilient, and high-performance distributed systems. Strong understanding of multithreading, asynchronous programming, concurrency, synchronization, and performance optimization. Experience with Maven or Gradle build tools. Strong analytical, troubleshooting, and problem-solving skills.

Qualifications

Preferred Qualifications

Experience with one or more of the following: Vert.x or other reactive frameworks (Spring WebFlux, Quarkus, Micronaut, Reactor) Couchbase or other NoSQL databases (MongoDB, Cassandra, DynamoDB) OAuth 2.0, OpenID Connect, and enterprise authentication/authorization frameworks Event-driven architectures using Kafka or similar messaging platforms Docker and Kubernetes AWS, Open-Shift, or Google Cloud CI/CD pipelines using Jenkins, GitHub Actions, GitLab CI, or similar tools Observability tools such as Splunk, Prometheus, Grafana, or OpenTelemetry Work Experience 5+ years of professional software engineering experience with a strong focus on backend application development. Extensive experience designing, developing, testing, and deploying enterprise applications using Java 8+ and Kotlin. Hands-on experience implementing asynchronous and concurrent applications using Completable Future, Java Streams, Executor Framework, and Java concurrency utilities. Experience designing and building scalable RESTful APIs and microservices. Experience implementing application security using JWE, encryption libraries, secure key management practices, and industry-standard cryptographic protocols. Experience securing APIs using authentication and authorization standards such as OAuth 2.0, JWT, and TLS/SSL. Experience developing applications in distributed, multi-tier architectures. Experience with relational and NoSQL databases. Experience with Agile software development methodologies, including Scrum or Kanban. Experience writing automated unit, integration, and performance tests. Experience performing code reviews, mentoring engineers, and driving engineering best practices. Experience troubleshooting production issues, improving application performance, and enhancing system reliability. Strong communication and collaboration skills with the ability to work effectively across engineering, architecture, and product teams.

Nice to Have Experience with reactive programming using Vert.x or similar frameworks. Experience with event-driven and message-based architectures. Experience designing secure, high-throughput APIs for enterprise platforms. Experience leading technical design discussions and driving architectural decisions. Experience mentoring engineers and contributing to engineering standards and best practices. Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a related technical discipline, or equivalent practical experience. 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 positions.

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. 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 6% Company Match on retirement savings plan Free financial coaching and financial well-being support Comprehensive medical, dental, vision, life insurance, and disability benefits Flexible working model with hybrid, onsite or virtual arrangements depending on role and business need 20+ weeks paid parental leave for all parents, regardless of gender, offered for pregnancy, adoption or surrogacy 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 For a full list of Team Amex benefits, visit our Colleague Benefits Site. American Express is an equal opportunity employer and makes employment decisions without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran status, disability status, age, or any other status protected by law. American Express will consider for employment all qualified applicants, including those with arrest or conviction records, in accordance with the requirements of applicable state and local laws, including the California Fair Chance Act, the Los Angeles County Fair Chance Ordinance for Employers, and the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. For positions covered by federal and/or state banking regulations, American Express will comply with such regulations as it relates to the consideration of applicants with criminal convictions. 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. US Job Seekers - Click to view the “Know Your Rights” poster. If the link does not work, you may access the poster by copying and pasting the following URL in a new browser window: The below represents the expected salary range for this job requisition. Ultimately, in determining your pay, we’ll consider your location, experience, and other job-related factors.​