Senior Software Engineer II - Quantum Computing - Technology Research and Development

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 Data and AI organization unites the data governance, strategy, engineering, and product teams with those responsible for AI engineering, generative AI enablement, and automation product and engineering. This group plays a pivotal role in leveraging data as a core driver of innovation and integrating AI capabilities to transform products, operations, and customer experiences. The EDAI organization also incorporates technology Research & Development and experimentation with emerging capabilities, along with engineering support for Amex Digital Labs. This integration ensures that research breakthroughs seamlessly translate into business impact.

Responsibilities

• Design, prototype, and evaluate quantum algorithms to address complex computational problems in finance.
• Collaborate with interdisciplinary teams—including quantum scientists, data scientists, and financial engineers—to integrate quantum solutions into real-world financial workflows.
• Develop and maintain quantum software libraries, tools, and simulation environments.
• Present technical findings internally and externally through presentations, seminars, and written documentation.
• Publish high-quality research and represent the organization at leading conferences and industry forums.

Qualifications

• Ph.D. or Master’s degree in Engineering, Physics, Mathematics, Computer Science, or a related discipline; or equivalent industry experience.
• Minimum of 2 years of hands-on experience in quantum computing (QC) or quantum information science (QIS).
• Deep understanding of quantum information theory, including quantum algorithms, error correction, and entanglement.
• Strong foundation in discrete mathematics, numerical methods, and scientific computing.
• Proven track record of peer-reviewed publications in quantum computing or closely related fields.
• Proficiency with one or more quantum programming frameworks: Qiskit (preferred), Cirq, Q#, or similar platforms.
• Advanced programming skills in Python, with experience in developing robust, production-level software.
• Strong analytical and problem-solving abilities with a high level of intellectual curiosity.
• Excellent organizational, communication, and decision-making skills.
• Familiarity with hybrid quantum-classical approaches and variational algorithms (e.g., VQE, QAOA).
• Experience working with quantum simulators and quantum hardware platforms.
• Exposure to financial modeling, portfolio optimization, or risk analytics is a strong plus.
• 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 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
• 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 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.

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