Software Engineer III – Backend, Java

American Express

. Design, develop, test, and maintain scalable backend applications and microservices using Java .

Posted 10/6/2026full-timePhoenix • Arizona • United StatesMid-LevelSenior💰 $103,750 - $174,750 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and developing scalable backend applications using Java, with a strong focus on RESTful API design, automated testing, and Agile methodologies. Proficient in collaborating with cross-functional teams to deliver high-quality software solutions while adhering to best practices in software engineering.

Highest-signal resume keywords

Java DevelopmentRESTful API DesignAgile MethodologiesAutomated Testing FrameworksMicroservices Architecture

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend Application DevelopmentMicroservicesRESTful APIsRelational DatabasesNoSQL DatabasesCode ReviewPerformance ImprovementData Access PatternsVert.xSoftware Engineering Best Practices

Soft Skills

CollaborationEffective CommunicationProblem Solving

Tools & Technologies

JUnitMockitoGitJenkins

Certifications & Qualifications

Bachelor’s Degree in Computer ScienceBachelor’s Degree in Computer Engineering

Industry Keywords

Payments IndustryBlockchain TechnologiesDistributed Ledger TechnologiesWeb3 Technologies

Tech Stack

Tools & technologies

JavaJenkinsJUnitMicroservicesMockitoNoSQLWeb3

About the role

Key responsibilities & impact

Design, develop, test, and maintain scalable backend applications and microservices using Java
Work as part of an Agile engineering team, contributing to user story analysis, technical design, development, testing, and production support
Develop and integrate RESTful APIs following established API design and security best practices
Write clean, maintainable, well-tested, and reusable code while following software engineering best practices
Work with relational and NoSQL databases and develop efficient data access patterns
Troubleshoot application issues, analyze logs and metrics, and contribute to performance and reliability improvements
Participate in code reviews and collaborate with engineers to continuously improve code quality and engineering standards
Collaborate with product owners, engineers, architects, and other stakeholders to understand requirements and deliver high-quality solutions
Continuously learn new technologies, frameworks, and engineering practices and apply them to solve business problems
Serve as an active member of an Agile team, contributing to user story analysis and elaboration, application design and development, testing, and automation

Requirements

What you’ll need

Bachelor’s degree in Computer Science, Computer Engineering, or a related technical discipline, or equivalent practical experience
5-7 years years of software development experience, preferably developing backend applications using Java
Understanding of RESTful API design and development principles
Knowledge of emerging trends, technologies, and standards in the payments industry
Knowledge of emerging trends and standards in blockchain and distributed ledger technologies
Knowledge of Web3 technologies and ecosystems
Experience with or knowledge of Vert.x
Familiarity with automated testing frameworks such as JUnit and Mockito
Experience or familiarity with source control and CI/CD tools such as Git, Jenkins, or equivalent technologies
Ability to collaborate effectively with engineers, product owners, and other stakeholders
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

Benefits

Comp & perks

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