FLEX Senior Software Engineer

About the Role We are looking for a skilled and passionate Software Engineer to join our engineering team focused on modernizing the Financial Services Platform for Marriott International. You will play a key role in designing, developing, and deploying scalable solutions that will enhance and streamline Marriott’s financial operations, and integrate with core platforms within Marriott. This is an exciting opportunity to work on innovative projects that blend technology with service excellence in a fast-evolving industry. Key Responsibilities Design, develop, test, and deploy high-quality software solutions Collaborate with cross-functional teams including product managers, engineers, designers, QA, and DevOps. Integrate with third-party APIs and core platforms Participate in code reviews, architecture discussions, and agile ceremonies. Write clean, maintainable, and well-documented code. Contribute to continuous improvement of development processes and tools. Ensure performance, security, and scalability of applications. Experience 7+years of professional software engineering experience building enterprise?scale backend systems. Proven experience designing and operating distributed systems in production. Strong experience with Java, Spring Boot, and REST/event based APIs. Hands on experience with cloud platforms (AWS preferred). Experience working in Agile / product oriented teams. Technical Skills Strong understanding of: Microservices and event driven architectures Domain Driven Design (DDD) Data modeling and transactional consistency API versioning and backward compatibility Experience with: Kafka or similar event streaming platforms Relational and/or NoSQL data stores Docker and Kubernetes CI/CD pipelines and DevOps practices Nice to Have Exposure to infrastructure as code. Knowledge of data analytics, personalization engines, or AI-driven guest experience tools. Why Join Us? Be part of a transformative journey in one of the world’s most service-driven industries. Work on meaningful projects that directly impact guest satisfaction and operational efficiency. Collaborate with a diverse, forward-thinking team of technologists and hospitality experts. Enjoy a flexible work environment and opportunities for continuous learning and growth. At Marriott International, we are dedicated to being an equal opportunity employer, welcoming all and providing access to opportunity. We actively foster an environment where the unique backgrounds of our associates are valued and celebrated. Our greatest strength lies in the rich blend of culture, talent, and experiences of our associates.  We are committed to non-discrimination on any protected basis, including disability, veteran status, or other basis protected by applicable law.  All locations offer 401(k) plan, stock purchase plan, discounts at Marriott properties, commuter benefits, employee assistance plan, and childcare discounts.  Benefits are subject to terms and conditions, which may include rules regarding eligibility, enrollment, waiting period, contribution, benefit limits, election changes, benefit exclusions, and others. Click here to learn more. Full-time positions also offer coverage for medical, dental, vision, health care flexible spending account, dependent care flexible spending account, life insurance, disability insurance, accident insurance, adoption expense reimbursements, and paid parental leave.  Washington Applicants Only : Employees will accrue paid sick leave, 0.0384 PTO balance for every hour worked and be eligible to receive minimum of 9 holidays annually.  Marriott HQ is committed to a hybrid work environment that enables associates to Be connected.  Headquarters-based positions are considered hybrid, for candidates within a commuting distance to Bethesda, MD; candidates outside of commuting distance to Bethesda, MD will be considered for Remote positions. Marriott International is the world’s largest hotel company, with more brands, more hotels and more opportunities for associates to grow and succeed. Be where you can do your best work,​ begin your purpose,  belong to an amazing global​ team, and  become the best version of you.