Staff Site Reliability Engineer (SRE)

About the Role

Xometry is seeking a Staff Site Reliability Engineer to join our Site Reliability Engineering (SRE) Organization. In this role as a senior individual contributor, you will define the technical strategy and direction for the reliability and performance of our infrastructure and software systems. You will lead complex, cross-functional initiatives, mentor senior engineers, and influence key architectural and business decisions across our technology organization.

How You’ll Contribute

• Lead the resolution of the most complex, cross-cutting technical challenges and drive them to completion, ensuring alignment with organizational goals
• Define the long-term technical roadmap and strategy for core SRE platforms and services
• Architect, scope, and drive delivery of major engineering initiatives, balancing trade-offs between effort, risk, and long-term business impact
• Set the standard for clean, efficient, and well-documented code, focusing on core system improvements and features
• Collaborate effectively across teams, communicating clearly on progress, blockers, and outcomes to technical and executive stakeholders
• Provide technical mentorship to engineers across the organization and drive organization-wide adoption of best practices for operational excellence, observability, and infrastructure security
• Demonstrate accountability, curiosity, and continuous improvement in all aspects of your work
• Develop, configure, and maintain underlying platforms for deployed software (AWS accounts and networking, Kubernetes clusters, and similar systems), focusing on architectural design and scaling
• Develop, configure, and maintain observability and monitoring tools (Coralogix, Sentry, etc.), including defining SLOs and SLIs
• Develop, configure, and maintain software development (CI/CD) tools (GitHub Actions runners, Argo CD, etc.)

Qualifications

• 8+ years of professional experience in infrastructure management or backend software development in a fast-paced, product-driven environment
• Demonstrated deep technical expertise in one or more of the following languages: Python, JavaScript, or Unix Shell
• Extensive experience with AWS, including architecting, deploying, monitoring, and scaling production workloads across multiple accounts and regions
• Deep expertise with Terraform, Kubernetes, advanced CI/CD pipelines, and Docker/containerization best practices
• Proven experience leading technical projects with significant cross-functional impact
• Comfortable working in an operational environment, including acting as a point of escalation for complex issues outside of the on-call schedule
• Excellent communication and collaboration skills, comfortable engaging with technical and executive stakeholders