Sr. Full Stack Engineer - Martech & Campaign Management

POSITION SUMMARY The Senior Full-Stack Engineer, Martech & Campaign Management is a hands-on engineering role within Wynn's Customer Data Platform (CDP) team, responsible for the design, development, and continuous improvement of Wynn's custom campaign management application and its integrations with the broader marketing technology ecosystem. This role owns both the frontend user experience and the backend services that power campaign creation, offer management, guest segmentation, and multi-channel activation across Wynn Resorts. The ideal candidate is a full-stack practitioner who combines strong ReactJS and Python engineering skills with the ability to work directly with marketing and campaign operations stakeholders. They understand how complex business workflows translate to application logic, have a high bar for production-quality code, and actively use AI-assisted development tools to move faster without sacrificing reliability. KEY RESPONSIBILITIES Frontend Engineering • Design and implement ReactJS-based user interfaces that support complex campaign management workflows — including campaign creation, offer matrix configuration, approval routing, audience selection, and post-execution reporting. • Build component-based UI architecture with strong separation of concerns; ensure components are reusable, testable, and maintainable across a multi-property application context (WLV and EBH). • Implement role-based access control, field-level validations, and multi-step workflow logic in the frontend layer; ensure consistent error handling and user feedback across all screens. • Partner directly with marketing and campaign operations stakeholders to understand UX requirements; translate business workflows into intuitive, performant user experiences without requiring a dedicated product designer. • Ensure UI consistency, accessibility, and responsiveness across campaign creation, approvals, and execution screens; contribute to and maintain a shared component library. • Write frontend unit and integration tests; maintain coverage thresholds as part of the CI pipeline; participate in cross-browser and regression testing ahead of releases. Backend Engineering & API Development • Build and maintain FastAPI-based backend services that orchestrate campaign execution, manage offer and rate code logic, handle system valuations, and expose APIs consumed by the frontend and downstream integrations. • Use SQLAlchemy ORM to model and manage application data; design schemas that support campaign lifecycle state, offer hierarchies, audience segmentation, and audit trails. • Develop and maintain integration APIs that connect the campaign management application with enterprise martech, CRM, hospitality, and gaming platforms — ensuring reliable data exchange, idempotent operations, and graceful degradation. • Design and implement backend validation logic, business rule enforcement, and workflow state management that mirror the complexity of Wynn's campaign and offer approval processes. • Instrument backend services with logging, error handling, and observability hooks; participate in production support and root cause analysis for a business-critical platform. Data Integration & Snowflake • Integrate application data flows with Snowflake — including query design, data-driven application logic, campaign performance data retrieval, and writing execution results back to the data warehouse. • Work with the data engineering team to understand and consume CDP data assets — guest profiles, segmentation outputs, engagement history, and offer eligibility data — as inputs to campaign management application logic. • Ensure data consistency between the campaign management application's operational data store and the enterprise data warehouse;