Sr Software Engineer II - Global Commercial Services Technology

Global Commercial Services (GCS) serves millions of business customers around the world, from mom-and-pop shops to Fortune 500 companies. We back businesses so they can do more business, with a mission to be the undisputed leader in financial and membership services - responsibly driving double-digit revenue growth. We do that by offering a diverse range of payment and cashflow tools, from a wide range of traditional card products, to working capital and supply chain financing, to new digital solutions that make it easy for our customers to manage a full range of their financial and payment needs.

The Global Commercial Services team at American Express is seeking a Senior Software Engineer II with strong expertise in frontend development and user-centric product engineering. This role will play a key part in building a next-generation expense management platform that delivers intuitive, scalable, and high-performing digital experiences for Small and Medium-sized (SMS) businesses and Corporate customers.

Responsibilities

• Design, develop, and deploy scalable backend services and APIs using Golang in AWS environments.
• Build microservices leveraging domain-driven design and modern architectural patterns such as hexagonal architecture.
• Collaborate with frontend engineers, product managers, and stakeholders to define service contracts and platform capabilities.
• Mentor engineers and foster strong collaboration across distributed engineering teams.
• Evaluate and integrate SaaS, PaaS, and IaaS solutions to meet functional and non-functional requirements.
• Participate in architecture reviews, RFCs, and proof-of-concept initiatives.
• Develop highly scalable, resilient, and observable distributed systems.
• Design and implement event-driven architectures and streaming solutions using Kafka and related messaging technologies.
• Integrate with workflow orchestration and durable execution frameworks such as Camunda and Temporal.
• Design and manage data systems across relational, graph, document, search, and OLAP databases.
• Build and operate cloud-native systems using AWS services such as Lambda, ECS, SQS, API Gateway, RDS, and S3.
• Implement observability through logging, monitoring, and distributed tracing using tools such as Datadog.
• Establish backend engineering standards, best practices, and system design conventions.
• Plan, estimate, and deliver on engineering work while proactively mitigating risks and resolving blockers.
• Communicate progress and system capabilities to stakeholders and leadership.

Qualifications

• 8+ years of experience in software engineering with a strong focus on backend systems.
• Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or related field.
• Strong hands-on experience building backend services using Golang.
• Strong experience designing and deploying systems in AWS cloud environments.
• Experience building and operating distributed systems, APIs, and microservices architectures.
• Experience with domain-driven design and modern architectural patterns.
• Experience working with a variety of data storage technologies including relational and NoSQL databases.
• Experience with distributed Postgres-compatible databases such as CockroachDB.
• Experience integrating workflow orchestration platforms such as Camunda or Temporal.
• Experience implementing observability, monitoring, and performance optimization tools such as Datadog.
• Experience collaborating across cross-functional teams and mentoring engineers.
• Strong communication and problem-solving skills.
• Experience integrating AI/ML models into backend systems is a plus.
• Entrepreneurial mindset and passion for building scalable systems.
• Employment eligibility to work with American Express in the United States is required as the company will not pursue visa sponsorship for this position.