Senior Java/Kotlin Software Engineer - Digital Banking, Payments

American Express

American Express

Software Engineering
Toronto, ON, Canada
Posted on May 29, 2025

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. As part of Team Amex, you'll experience this 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.

How will you make an impact in this role?

The Payments Platform is responsible for clearing more than 500 million transactions a year globally, with a value of over 1 trillion dollars (Yep! that is not a typo, trillion with a T). This is a mission critical endeavor, with plenty of interesting engineering challenges in a space that is ripe for innovation. Open banking, ISO 20022, real-time/instant payments, and modern cross-border schemes are revolutionizing clearing and settlement. Our Platform is becoming the gateway to existing and emerging global payment rails; and we are using an innovative integration stack to “speak” the many schemes and formats. Beyond the transactional aspect, our differentiating value is contextual. A rich data backbone and deep integration with enterprise data sources allow us to offer powerful omnichannel APIs and extension points used by developers that build customer facing experiences such as P2P payments, loans, bill-pay, commercial cross border payments, AP automation, and many more. We are beginning our journey of transforming the technical landscape in our teams to use a microservice architecture and are looking to bolster our technical talent by acquiring full-stack developers, using technologies such as Java, Kotlin, Spring, and React.

Responsibilities:

As a developer, you will be responsible for end-to-end delivery of your software from inception to production, working on a mixture of green- and brown-field projects, learning from, and contributing to your peer group.

Qualifications:

  • Bachelor's or master's degree in computer science, computer engineering, software engineering, or other technical discipline, or equivalent work experience.
  • Push Payments Expertise.
  • 5+ years of software development experience with strong knowledge in Java, Rest APIs, and exposure to alternate JVM languages: Kotlin, Clojure.
Technical Skills:
  • Python, Scala, Node.js, Golang, Java, JavaScript, C++, C#, Kotlin.
  • Database: MySQL, MongoDB, Redis, Postgres.
  • Search & log: Solr, Fruendt, Prometheus.
  • Container orchestration: Kubernetes, GKE, Docker.
  • CI/CD: Jenkins, SonarQube.
  • Cloud services: Big Query, DataPro, Dataflow, Cloud SQL, Cloud Composer, AWS EMR.
  • Other: Git, Gitflow, Jira, Bitbucket, Gitlab, Trello, Scrum.
  • Frameworks: Quarkus, Ktor.
  • NoSQL databases: MongoDB, Cassandra, HBase, Couchbase.
  • Applied statistics skills: distributions, statistical testing, regression analysis.
  • Creativity & Problem-Solving Skills.
  • Adaptability & Flexibility.
  • Aptitude for technology; curiosity, passion, and startup mindset.
  • Innovative thinking.
Other Skills (that will be a plus):
  • Web technologies – An in-depth knowledge and experience working with web technologies such as JavaScript, HTML, CSS, TypeScript, C#, SASS, Stylus, Stylus, Python, and LESS.
  • React tools – Strong proficiency in Enzyme, Webpack, Redux, and Flux.
  • Web frameworks – Proven expertise in different frameworks like React Native, AngularJS, Angular2, VueJS, SocketIO, Backbone, KnockoutJS, Svelte, and Bootstrap.
  • Open-source Libraries – Demonstrable experience with jQuery, MomentJS, html5sql.js, RequireJS, and Loads.
  • Software testing tools – A good working knowledge in testing codes using Mocha, Jest, Unit-tests, TDD, Karma, VCS, and Selenium (base).
  • Databases – A familiarity of working with different databases such as MySQL, NoSQL (e.g., MongoDB), PostgreSQL, Redis is recommended.
  • Code repositories – Working experience using GitHub, Bitbucket, Rhode Code, and devZing Subversion.
  • Cloud management – A strong background in different cloud platforms like Amazon AWS, Microsoft Azure, OpenStack Apache, and Google Cloud Platform.

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
  • Support for financial-well-being and retirement
  • Comprehensive medical, dental, vision, life insurance, and disability benefits (depending on location)
  • Flexible working model with hybrid, onsite or virtual arrangements depending on role and business need
  • Generous paid parental leave policies (depending on your location)
  • 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

American Express is committed to providing an inclusive and accessible work environment in which all people who apply for positions or who work for or on behalf of Amex are treated with dignity and respect and are provided with equal treatment with respect to employment, regardless of that person's age, sex, sexual orientation, gender identity, gender expression, race, colour, ancestry, ethnic or national origin, citizenship, religion or creed, marital status, family status, pregnancy, disability, record of offences, social condition or origin, political beliefs, association or activity or other factors prohibited under applicable Human Rights legislation (the “Prohibited Grounds”). If you have a disability and need accommodation, please speak with the Recruiter for more information.

Offer of employment with American Express is conditioned upon the successful completion of a background verification check, subject to applicable laws and regulations.