FLEX Software Engineer, Conversational AI and Intelligent Search

Marriott International is seeking a temporary FLEX Software Engineer focused on conversational AI and intelligent search. This remote-based role supports the design, build, test, and operation of production-grade AI experiences, including AI agents and retrieval workflows that bring generative AI capabilities into real customer environments.

Responsibilities

• Design, build, test, deploy, and operate production-grade conversational AI applications, intelligent search experiences, and AI agents.
• Develop multi-turn workflows, agent routing, structured tool calling, memory, and context-management capabilities.
• Build retrieval-augmented generation and intelligent search solutions using embeddings, vector retrieval, hybrid search, reranking, and grounding techniques.
• Integrate AI applications with internal APIs, search platforms, databases, model providers, and external services.
• Develop scalable APIs, streaming interfaces, asynchronous workflows, and event-driven backend services.
• Implement prompt management, model configuration, structured outputs, safety guardrails, authentication, authorization, and secure data-handling practices.
• Improve response accuracy, grounding, relevance, personalization, latency, scalability, and cost efficiency through measurement and iterative engineering.
• Create unit, integration, contract, end-to-end, and automated regression tests for AI applications and supporting services.
• Partner with Quality Engineering to develop evaluation datasets, release-quality thresholds, and repeatable AI evaluation and experimentation practices.
• Implement logging, metrics, distributed tracing, alerting, dashboards, and production diagnostics using OpenTelemetry and application-performance monitoring platforms.
• Troubleshoot complex production issues across models, prompts, application code, infrastructure, data stores, and downstream dependencies, including root-cause analysis.
• Participate in architecture reviews, code reviews, release planning, CI/CD implementation, progressive delivery, and production support.
• Evaluate emerging generative AI technologies and make pragmatic architecture and implementation decisions aligned with business, security, reliability, and operational requirements.
• Collaborate across Product, Engineering, Quality Engineering, Security, Platform, and Operations teams to deliver inclusive, accessible, high-traffic customer experiences.

Requirements

• Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or a related field, or a high school diploma/GED with an additional 4 years of professional experience.
• 2+ years of professional software engineering experience.
• Programming experience in Python, Java, JavaScript, TypeScript, or a comparable language, including production experience building and operating backend services, APIs, cloud-native applications, containers, Kubernetes, distributed systems, and automated CI/CD pipelines.
• Hands-on experience developing generative AI, conversational AI, intelligent search, retrieval-augmented generation, or agent-based applications, including model APIs, prompt engineering, tool calling, structured outputs, embeddings, retrieval, context management, testing, observability, secure development, and sensitive-data handling.

Technology Stack

• Python, Java, JavaScript, TypeScript
• Kubernetes, CI/CD, containers
• Retrieval-augmented generation, embeddings, vector retrieval, hybrid search, reranking
• OpenTelemetry, application-performance monitoring platforms
• LangChain, LlamaIndex, Semantic Kernel, AutoGen, Temporal
• Vector databases, LLM-as-judge patterns, caching
• Prompt-injection defenses, content safety, red-team testing
• Feature flags, progressive delivery, canary deployments

Preferred Candidate Profile

• Experience building multi-agent or workflow-orchestrated AI systems using frameworks such as LangChain, LlamaIndex, Semantic Kernel, AutoGen, Temporal, or comparable technologies.
• Experience with vector databases, hybrid search, reranking, retrieval optimization, AI evaluation, LLM-as-judge patterns, experimentation, latency and token optimization, caching, and cost management.
• Experience with responsible AI practices, including prompt-injection defenses, content safety, red-team testing, OpenTelemetry, application-performance monitoring, canary deployments, feature flags, progressive delivery, and localized, accessible, high-traffic customer applications.

Benefits

• 401(k) plan and stock purchase plan
• Discounts at Marriott properties
• Commuter benefits
• Employee assistance plan and childcare discounts
• Medical, dental, vision
• Health care flexible spending account and dependent care flexible spending account
• Life insurance, disability insurance, accident insurance
• Adoption expense reimbursements and paid parental leave
• Washington Applicants Only: paid sick leave, 0.0384 PTO balance for every hour worked, and eligibility to receive a minimum of 9 holidays annually

Additional Information

• Job Number: 26123873
• Job Category: Information Technology
• Location: 7750 Wisconsin Avenue, Bethesda, MD 20814, United States
• Schedule: Full Time
• Located Remotely: Y
• Position Type: Management
• Pay Range: $41.97-$69.23 per hour (USD 41 - 69 per hourly)
• Temporary position; assignment duration through September 11, 2027
• Expiration Date: 11/10/2026
• Marriott HQ supports a hybrid work environment for HQ-based roles; remote roles are clearly identified in the job posting.