OneMain Financial Jobs

Senior Software Engineer II - Java, React, Vert.x - Amex Ads, Offers, and Dining Technology

Phoenix, AZ, United States(Hybrid)

Job Description

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 U.S. Consumer and Digital Technology (USCDT) Team brings together foundational strategic technology capabilities in digital experience engineering (Mobile and Web), AI/ML, marketing technology, enterprise communications, travel and lifestyle, and automation, grounded in our data technology model that prioritizes data governance. 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.

Be part of exciting and innovative initiatives and join a team of creative, curious, and passionate professionals whose mission is to become the future of American Express by staying on the cutting edge of technology and bringing innovation to life! The Brand Experience and Engagement Technology team leads the Event Marketing and AdTech technology strategy and platforms.

Responsibilities

• Supervises and mentors Software Engineers and cross-functional team of colleagues in specific tasks or projects, fostering their professional growth and ensuring adherence to best practices

• Provides mentorship and technical leadership to junior engineers, fostering a culture of continuous learning and improvement

• Leads the entire lifecycle of software applications and systems, ensuring high-quality delivery from inception to deployment

• Directs the technical aspects of projects, ensuring scalability, performance, and reliability

• Reviews code for accuracy, quality, and adherence to best practices, offering constructive feedback

• Establishes and enforces coding standards, development methodologies, and best practices within the team

• Identifies and resolves performance bottlenecks, ensuring optimal application performance

• Facilitates collaboration with cross-functional teams to support changes and implementations, ensuring alignment with organizational objectives

• Collaborates and co-creates effectively with teams in product and the business to align technology initiatives with business objectives

Qualifications

• Degree in computer science, computer engineering or a related field

• Significant hands-on experience in application architecture / design, software development, and testing, preferably in an Agile environment within a professional environment.

• Minimum 10 years of proven experience using Java, React, Vert.x, Spring, Spark, Postgres, Ignite, Restful APIs, Redis, Kafka.

• Strong engineering and professional leadership skills.

• Demonstrated ability to lead, partner, and collaborate multi-functionally across many engineering teams.

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 (https://www.americanexpress.com/en-us/company/who-we-are/) 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 out Colleague Benefits Site (https://www.americanexpress.com/en-us/colleagues/benefits) .

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 (https://www.eeoc.gov/poster) ” poster. If the link does not work, you may access the poster by copying and pasting the following URL in a new browser window: https://www.eeoc.gov/poster.

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.​

Job Info

• Job Identification 26005868

• Posting Date 04/17/2026, 05:00 AM

• Apply Before 04/30/2026, 05:00 AM

• Degree Level Bachelor's Degree

• Job Schedule Full time

• Job Shift Day

• Locations AMEX 18850 N 56th Street Building 3, Phoenix, AZ, 85054, US(Hybrid)

• Salary Range $123,000.00 to $215,250.00 annually + bonus + benefits

• Career Area Technology