Sr Software Engineer I - GCP, Java/Python - The Personalization, Brand, and Communications Technology

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 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.

This team is responsible for building Enterprise Personalization products, including batch and real-time analytical, machine learning, and modeling solutions leveraging modern cloud native technologies such as GCP, Java, Spark, BigQuery, Pub/Sub, Dataflow, GKE, and distributed data processing frameworks. The platform powers highly scalable personalization capabilities across multiple customer touch-points and business domains.

Our team has delivered industry leading products with several organizational firsts and continues to drive innovation in personalization and intelligent decisioning. Today, we support 21+ channels (including Web, Mobile, Voice, and Email), process ~15MM transactions daily, and deliver personalized experiences across Card, Servicing, Membership Rewards, Dining, Travel and  Merchant in 25 markets.

We are rapidly expanding with a focus on building a next generation Enterprise Orchestration Platform powered by cloud, real-time intelligence, and scalable ML driven solutions.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field
• 5+ years of software engineering experience with strong hands-on expertise in building scalable enterprise applications and distributed systems
• Proven experience designing and developing cloud-native solutions on GCP using Java/Python and modern API-driven architectures
• Strong experience building scalable batch and real-time data processing solutions leveraging technologies such as Spark, BigQuery, Dataflow, Pub/Sub, and GKE
• Hands-on expertise in application design, microservices, automated testing, CI/CD, and cloud deployment patterns
• Strong understanding of data structures, algorithms, system design, and distributed computing principles
• Experience leveraging modern AI-assisted development tools such as Devin AI, Claude, GitHub Copilot, or similar platforms to improve engineering productivity, code quality, and software delivery efficiency preferred.
• Experience working with machine learning, analytical, or modeling platforms in batch and/or real-time environments is preferred
• Ability to translate complex business problems into scalable technical solutions and operate effectively in ambiguous environments
• Strong analytical, problem-solving, and communication skills with the ability to collaborate across global teams
• Demonstrated ability to mentor junior engineers, drive technical excellence, and stay current with emerging technologies and industry trends
• Experience with Agile development methodologies and modern software engineering practices preferred
• Employment eligibility to work with American Express in the U.S. is required as the company will not pursue visa sponsorship for these positions.

Responsibilities

• Owns all technical aspects of software development for assigned applications
• Performs hands-on architecture, design, and development of Personalization systems supporting multiple business units across Enterprise Orchestration Platform.
• Functions as Senior engineer of an agile team and helps drive consistent development practices
• Typically spends 60-70% of time writing code and testing, and remainder of time collaborating with peers, stakeholders through ongoing product/platform releases
• Develops deep understanding of tie-ins with other Amex systems and platforms within the supported domains
• Writes code and unit tests, works on API specs, automation, and conducts code reviews and testing
• Performs ongoing refactoring of code, utilizes visualization and other techniques to fast-track concepts, and deliver continuous improvement - Identifies opportunities to adopt innovative technologies
• Provides continuous support for ongoing application availability
• Works closely with product owners on blueprints and annual planning of feature sets that impact multiple platforms and products
• Works with product owners to prioritize features for ongoing sprints and managing a list of technical requirements based on industry trends, new technologies, known defects, and issues.