Sr Software Engineer II

At Amex Offers, we are solving complex problems at scale while delivering seamless, high-impact customer experiences. As a Senior Engineer, you will play a key role in evolving our platform and driving end-to-end solutions that power our Offers ecosystem.

The ideal candidate is comfortable working across the full stack from backend systems and data layers to frontend experiences—and has experience building consumer or B2B products. You are able to move quickly while maintaining strong architectural rigor and collaborating effectively across teams.

In this role, you will partner closely with the Enterprise Architecture team to align on scalable, future-ready designs. You will lead end-to-end solution design and execution, working across multiple downstream systems and dependencies to ensure seamless integration and delivery.

You thrive in a fast-paced, evolving environment, are a strong collaborator and problem-solver, and are excited about leveraging technology to drive impactful customer experiences.

Responsibilities

• Design, develop, test, deploy, and maintain scalable backend systems and microservices with a focus on performance, reliability, and security.

• Build and manage robust APIs (REST/GraphQL) to support frontend applications and external integrations.

• Develop and maintain distributed data processing pipelines using technologies like Kafka and Apache Spark.

• Architect and implement event-driven systems leveraging message brokers (e.g., Kafka) for high-throughput and real-time processing.

• Collaborate with frontend engineers, product managers, and UX teams to deliver end-to-end solutions aligned with business requirements.

• Integrate backend services with internal and external systems, ensuring efficient data flow, resilience, and fault tolerance.

• Contribute to system design discussions including microservices architecture, data modeling, scalability, and API design trade-offs.

• Write clean, maintainable, and well-tested code following engineering best practices and coding standards.

• Implement and enhance automated testing strategies, including unit, integration, and performance testing.

• Conduct code reviews to ensure quality, performance optimization, and maintainability across the codebase.

• Monitor application health using observability tools, logs, and metrics; proactively identify and resolve bottlenecks.

• Leverage AI-powered development tools AI tools (Devin AI, GitHub Co-pilot) Java, REST APIs, Micro services, Spring, Vert.X, Big Data, Apache Spark, ReactJS, AngularJS , Kafka, cloud etc. to improve developer productivity, code quality, and delivery speed.

• Mentor junior engineers through code reviews, design discussions, and knowledge sharing.

• Actively participate in Agile practices such as sprint planning, stand-ups, demos, and retrospectives.

Qualifications

• Proven experience in backend software engineering, building scalable and high-performance systems.

• Hands-on experience designing and developing APIs and microservices architectures.

• Experience working with distributed streaming platforms like Kafka.

• Experience with big data processing frameworks such as Apache Spark.

• Experience implementing automated testing (unit, integration, and performance testing).

• Experience working in Agile environments (Scrum and/or Kanban).

• Experience using AI-assisted development tools (e.g., Devin AI, Cursor, Claude Code, GitHub Copilot) in the software development lifecycle.

• Experience in high-scale, data-intensive, or real-time processing environments is a plus.