Lead Software Engineer

About Us:

Marriott International Inc., headquartered in Bethesda, Maryland, USA, was founded in May 1927 by J. Willard Marriott and Alice S. Marriott with a modest nine-seat A&W root beer stand. Guided by the family's leadership and core principles, Marriott International today has grown into a global hospitality giant, operating approximately 9,000 properties and over 30 leading brands in more than 140 countries and territories.

From such humble beginnings to becoming the world's largest hotel company, Marriott International has never stopped searching for inventive ways to serve its customers, provide opportunities for its associates, and grow their business. At Marriott Tech Accelerator center (MTA), Hyderabad, India, Marriott is exploring the world we live in and all its possibilities. At Marriott Tech Accelerator, we are a team of passionate engineering minds dedicated to creating and building cutting-edge solutions that streamline operations and elevate guest experiences.

Marriott Tech Accelerator center is fully owned and operated by ANSR. All associates at Marriott Tech Accelerator will be ANSR employees, delivering services exclusively to ANSR's client, Marriott International.

Job Title – Lead Software Engineer

About the Role:

We are looking for a Lead Software Engineer with strong Java experience (9+ years) to design, build, and own high-quality, scalable backend services in a high-volume, event-driven environment. This role sits in the integration layer of a large-scale platform migrating from legacy systems to a modern, reactive, cloud-native stack. You will Provide hands-on technical leadership and drive the end-to-end delivery of assigned modules, from design and development through deployment. Contribute to the continuous improvement and optimization of scalable, cloud-native platforms, encompassing APIs and microservices that support customer and loyalty capabilities

Responsibilities:

• Design, develop, test, and maintain backend services and APIs using Java
• Write clean, maintainable, and well documented code following best practices and coding standards
• Own high-level and low-level design (HLD/LLD) as well architecture for assigned modules/services and drive technical decision across teams;
• Design and build event-driven services and integrations (e.g., Kafka), including idempotency, message ordering, and resilient handling of unreliable upstream and downstream systems
• Design and build clean API and error contracts that decouple consumers from the systems behind them
• Mentor and guide a team of 4–5 engineers, fostering technical excellence, improving code quality, and driving overall team productivity beyond individual contributions
• Collaborate closely with product managers, QA engineers, and other developers to deliver features on time
• Implement unit, integration, and (where relevant) performance tests to ensure software quality
• Troubleshoot and debug production issues, performing root cause analysis and implementing long-term fixes
• Participate in code reviews, providing and receiving constructive feedback
• Contribute to continuous improvement of development processes, tooling, and automation (CI/CD)
• Ensuring security, scalability, and reliability are considered throughout the development lifecycle
• Stay current with Java and related ecosystem technologies and bring new ideas to the team

Required Qualifications:

• Bachelor's degree in computer science, Engineering, or equivalent practical experience
• Strong programming skills in Java (Java 11+) with a solid understanding of OOP, concurrency, and multithreading
• Experience building server-side applications using a Java framework (e.g., Spring/Spring Boot,)
• Good understanding of RESTful API design and implementation
• Experience with relational databases (PostgreSQL) and SQL, including query optimization and schema design
• Experience with reactive, non-blocking programming (e.g., Spring WebFlux / Project Reactor); or a strong grasp of non-blocking I/O and backpressure with the ability to ramp quickly
• Experience designing and operating event-driven systems using messaging/streaming (e.g., Kafka), including delivery guarantees, idempotency, and schema evolution
• Experience integrating heterogeneous systems: resilient service-to-service and third-party integrations, with clean API and error-contract design
• Ability to reason from first principles about unfamiliar systems and tradeoffs, not just recall tools and syntax
• Familiarity with version control systems (e.g., Git) and collaborative development workflows
• Solid understanding of software engineering fundamentals: data structures, algorithms, design patterns
• Experience with automated testing (unit/integration) and testing frameworks (e.g., JUnit)
• Strong problem-solving skills and ability to debug complex issues
• Good communication skills and ability to work effectively in a team environment
• Experience with DevOps tools such as Dynatrace or Splunk

Preferred Qualifications:

• Experience with cloud platforms (e.g., AWS, Azure, GCP) and cloud native architectures
• Experience with DAGs, AWS S3 and Lambda
• Hands-on experience with containerization and orchestration (Docker, Kubernetes)
• Deeper experience with the Kafka ecosystem: schema registry, AVRO, event schema governance, and stream processing (e.g., Kafka Streams)
• Familiarity with microservices, architecture and distributed systems
• Experience with build and CI/CD tools (e.g., Harness, GitHub Actions)
• Knowledge of NoSQL databases (e.g., MongoDB, Redis, Cassandra)
• Experience with performance optimization and application monitoring
• Experience with Airflow, Python, Harness and/or other technologies
• Experience with Jira/Confluence
• Familiarity with GraphQL and API federation

Soft Skills:

• Well-equipped to take a leadership role to ensure quality delivery to commitments
• Ability to break down complex problems into actionable tasks
• Openness to feedback and willingness to mentor and be mentored
• Proactive, collaborative, and comfortable working in an agile environment
• Continuous learning mindset and a passion for staying up to date with the latest technologies and trends

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.

Work location: Hyderabad, India.

Work mode: Hybrid

Marriott's core values:

At Marriott, our core values make us who we are. We believe that success is never final. As we change and grow, the beliefs that are most important to us stay the same—putting people first, pursuing excellence, embracing change, acting with integrity, and serving our world. Being part of Marriott Tech Accelerator means being part of a proud history and a thriving culture.