Full Stack Developer

Amex GBT is a place where colleagues find inspiration in travel as a force for good and – through their work – can make an impact on our industry. We’re here to help our colleagues achieve success and offer an inclusive and collaborative culture where your voice is valued.

This role focuses on designing and maintaining enterprise Java services within distributed architectures. You'll work across the full development lifecycle—from API design and Spring Boot development to deployment automation and production support—while collaborating with cross-functional teams in AWS and Linux environments.

What You’ll Do

• Build, develop, and maintain Java-based services/APIs (REST/SOAP) and SOA/web services in a distributed, multi-tier architecture, managing XML and JSON data exchanges.
• Develop and maintain Spring Boot applications with containerized deployments on Docker, Tomcat, and OpenShift using strong Unix/Linux operational skills.
• Support and implement integrations using Kafka and various queuing or messaging approaches.
• Work with relational databases (Postgres, SQL Server) and NoSQL databases, including XML data handling, schema design, and query optimization.
• Participate in or lead Java migration/upgrade efforts (JDK 8/11 → JDK 17), ensuring compatibility, performance, and security.
• Build and maintain CI/CD pipelines and automation (Maven builds, GitHub workflows, Jenkins jobs, artifact publishing to Nexus).
• Integrate with communication platforms including SMS providers (Syniverse/Twilio), email delivery platforms (SparkPost), and security integrations (Proofpoint/DMARC).
• Collaborate with multi-functional teams to develop clear user documentation and communicate status, risks, and build decisions.
• Fix and support applications across multiple runtime environments and deployment platforms.
• Mentor team members and contribute to continuous improvement of development practices and architecture standards.

What We're Looking For

• 5+ years of extensive hands-on Java development experience, including JDK 11 and/or JDK 17 (beyond Java 8), with strong object-oriented design and coding skills.
• Experience building and integrating APIs and services using REST, SOAP/Web Services, SOA, XML, and JSON data formats.
• Advanced XML transformation experience with XSLT programming skills.
• 4+ years of experience in Node.js development experience with working knowledge of JavaScript and related technologies.
• Knowledge of distributed systems concepts including multi-tier architecture, algorithms, and messaging/queuing patterns.
• Hands-on experience with CI/CD tooling (Maven, GitHub, Jenkins, Nexus or equivalent) along with applied Unix/Linux command knowledge for production troubleshooting.
• Experience with application servers (Apache Tomcat) and containerization platforms (Docker and OpenShift).
• Demonstrated ability to work across multiple databases including relational (Postgres, SQL Server) and NoSQL solutions.
• Experience integrating with SMS and email communication platforms, including delivery callbacks, templates, compliance, and security protocols.
• Strong communication and collaboration skills with ability to document technical decisions and manage cross-functional projects.

Preferred Qualifications

• Direct experience on JDK migration projects (JDK 8/11 → JDK 17) including compatibility, dependency upgrades, testing, and performance tuning.
• Production-level expertise with Kafka (streams, consumer groups, retries/DLQ patterns, schema evolution) and hands-on experience with SMS/email platform integrations (Syniverse, Twilio, SparkPost, Proofpoint/DMARC).
• Cloud depth in AWS (networking, IAM, monitoring/logging, scaling, cost awareness) and production OpenShift operations, plus HTML email template design and SMTP workflow expertise.

Location

The #TeamGBT Experience

Work and life: Find your happy medium at Amex GBT.

• Flexible benefits are tailored to each country and start the day you do. These include health and welfare insurance plans, retirement programs, parental leave, adoption assistance, and wellbeing resources to support you and your immediate family.

• Travel perks: get a choice of deals each week from major travel providers on everything from flights to hotels to cruises and car rentals.

• Develop the skills you want when the time is right for you, with access to over 20,000 courses on our learning platform, leadership courses, and new job openings available to internal candidates first.

• We strive to champion Inclusion in every aspect of our business at Amex GBT. You can connect with colleagues through our global INclusion Groups, centered around common identities or initiatives, to discuss challenges, obstacles, achievements, and drive company awareness and action.

• And much more!

All applicants will receive equal consideration for employment without regard to age, sex, gender (and characteristics related to sex and gender), pregnancy (and related medical conditions), race, color, citizenship, religion, disability, or any other class or characteristic protected by law.

Click Here for Additional Disclosures in Accordance with the LA County Fair Chance Ordinance.

Furthermore, we are committed to providing reasonable accommodation to qualified individuals with disabilities. Please let your recruiter know if you need an accommodation at any point during the hiring process. For details regarding how we protect your data, please consult the Amex GBT Recruitment Privacy Statement.

What if I don’t meet every requirement? If you’re passionate about our mission and believe you’d be a phenomenal addition to our team, don’t worry about “checking every box;" please apply anyway. You may be exactly the person we’re looking for!