FLEX Senior Software Engineer

We are seeking a highly motivated FLEX Senior Software Engineer to drive performance optimization and scalability across enterprise APIs and platform services. This role focuses on ensuring reliability under high load, identifying performance bottlenecks, and implementing proactive monitoring and tuning strategies. The ideal candidate will partner with cross-functional teams to deliver efficient, scalable, and high-performing digital solutions while continuously improving engineering practices and system performance., * Serve as a performance engineering expert ensuring scalability, reliability, and efficiency of APIs and platform services

• Conduct performance testing, profiling, benchmarking, and tuning across distributed systems
• Analyze production performance issues and provide actionable optimization recommendations
• Design and implement performance frameworks, monitoring strategies, and dashboards
• Collaborate with product, architecture, and engineering teams to improve end-to-end performance
• Identify system bottlenecks, latency issues, and scalability risks across platform services
• Develop and maintain automation scripts for performance testing and analysis
• Drive performance best practices and provide technical guidance across teams
• Mentor team members and promote performance engineering knowledge sharing
• Partner with infrastructure and application teams to optimize performance and support production environments
• Ensure adherence to IT governance, standards, and performance engineering processes
• Escalate risks and proactively communicate performance-related concerns to stakeholders

Required

• Bachelor's degree in computer science, Information Technology, or equivalent experience
• 7+ years of experience working on large-scale distributed or API-based systems using cloud based (AWS/GCP) architecture.
• Strong expertise in performance testing tools (NeoLoad, JMeter, Locust, K6) and monitoring platforms (Dynatrace, Prometheus, etc.)

Preferred

• Familiarity with CI/CD pipelines and DevOps-integrated performance testing
• Knowledge of GraphQL, distributed systems, or resilience testing practices

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 (https://life.marriott.com/wp-content/uploads/2025/09/benefitsoverviewf_2025edits_8.19.25.pdf) 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.