Senior Platform Engineer – Infrastructure And Security Automation

Senior Platform Engineer

As a member of an agile scrum team, the Senior Platform Engineer will drive the delivery of standardized, scalable infrastructure automations with an emphasis on security and compliance best practices, built in DR/HA, and cost optimization. The goal of this engineer will be to deliver infrastructure automation that is so seamless and reliable that stakeholders who rely on it can focus on solving business problems without having to think about their cloud infrastructure. This role will collaborate with other teams such as CICD, FinOps, security, application development and more to ensure that the modules we build meet the needs of the organization. The senior platform engineer should be highly skilled in infrastructure as code, and able to advocate for best practices and design choices to improve the overall maturity and performance of our standardized infrastructure offerings.

Required Qualifications

• Undergraduate degree in an engineering or computer science discipline and/or equivalent experience/certification
• 6+ years of experience in platform engineering, DevOps, or infrastructure automation roles
• Expert-level proficiency in Terraform, including advanced features such as workspaces, remote state management, and module composition
• Proven experience implementing automated testing frameworks for Terraform (e.g., Terratest)
• Strong hands-on experience with Open Policy Agent (OPA) for policy-as-code implementation and enforcement
• Demonstrated expertise with Harness or similar CI/CD platforms for infrastructure automation pipelines
• Deep understanding of cloud platforms (AWS, Azure, or GCP) and their infrastructure products
• Experience building and maintaining shared service platforms used by multiple teams at scale
• Strong understanding of Git workflows, version control best practices, and GitOps principles
• Excellent problem-solving skills and ability to debug complex infrastructure issues

Preferred Qualifications

• Experience with multiple cloud providers and multi-cloud strategies
• Knowledge of additional policy frameworks and security scanning tools
• Familiarity with service mesh, container orchestration, or Kubernetes ecosystems
• Experience with observability and monitoring tools for infrastructure
• Background in security or compliance domains
• Contributions to open-source infrastructure projects
• Relevant certifications (e.g., HashiCorp Certified: Terraform Associate/Professional, cloud provider certifications)

Core Work Activities

• Research, design, and engineer modules that are standards-based, highly available and secured, delivering the required business functionality and reusable at scale.
• Educates internal and external users of the technologies to continually improve the knowledge and skill-base of the organization on how best to operate and support the infrastructure services.
• Provides documents with a focus on how services will be leveraged in the solution architecture.
• Participates in the evaluation and selection of technology products.
• Leads analysis of the current environment to detect critical deficiencies and recommends solutions for improvement.
• Leads analysis of technology industry and trends to determine the potential impact on existing and planned architectures.
• Implement comprehensive automated testing frameworks for Terraform code, including unit tests, integration tests, and end-to-end validation
• Develop and maintain Open Policy Agent (OPA) policies to enforce security, compliance, and governance standards as code
• Build and optimize CI/CD pipelines using Harness to automate testing, validation, and deployment of infrastructure modules
• Implement best practices and standards for infrastructure as code, including module versioning, documentation, and release management
• Collaborate with security, compliance, and engineering teams to translate requirements into enforceable policy guardrails
• Provide technical leadership and mentorship to other engineers on Terraform best practices and platform tooling
• Monitor and improve the reliability, performance, and scalability of our infrastructure automation platform
• Create comprehensive documentation and training materials for module consumers across the organization

Managing Projects and Priorities

• Functions as a strategic senior technical expert providing technical leadership within own and other teams.
• Develops specific goals and plans to prioritize, organize, and accomplish work.
• Determines priorities, schedules, plans and necessary resources to promote completion of any projects on schedule.
• Analyzes information and evaluates results to choose the best solution and solve problems.
• Reviews vendor proposals and selects appropriate vendor for services/technologies/hardware.
• Generates and provides accurate and timely results in the form of reports, presentations, etc.
• Keeps up-to-date technically and applies new knowledge to job.
• Performs other reasonable duties as required for this position.

Delivering on the Needs of Key Stakeholders

• Understands and meets the needs of key stakeholders.
• Communicates concepts in a clear and persuasive manner that is easy to understand.
• Demonstrates an understanding of business priorities to support achievement of performance goals, budget, etc.

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.