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Lead Site Reliability Engineer

Backend Developer • Lead • Remote • Vollzeit • 📍 Remote (US)

Mattermost is a collaborative workflow platform for defense, intelligence, security and critical infrastructure, trusted by the U.S. Department of War and Fortune 500s, running on-premises and in private clouds. The company seeks an experienced Lead Site Reliability Engineer to guide the architecture, reliability and operational excellence of the infrastructure powering its secure, mission-critical collaboration platform. The role provides technical leadership across the SRE function, driving scalability, observability, performance and automation across cloud and hybrid environments, mentoring engineers and collaborating with development, security and operations teams to ensure reliability for customers in defense, government and critical infrastructure. This is a remote-first US role with a salary range of $145,000-$200,000.

Responsibilities

  • Define the strategy, architecture and roadmap for the SRE function, aligning infrastructure initiatives with product and business goals
  • Lead the design, deployment and optimization of production-grade containerized workloads, infrastructure-as-code and compliant cloud environments for regulated domains (e.g., FedRAMP, DoD)
  • Establish and evolve observability, monitoring and alerting frameworks for performance, reliability and capacity planning at scale
  • Drive incident management processes, including on-call rotations, root cause analysis and systemic reliability improvements
  • Partner with security and compliance teams to meet data sovereignty, security and regulatory requirements
  • Champion automation and operational excellence to improve efficiency, reduce risk and scale operations
  • Oversee cloud cost management and capacity planning to optimize spending while meeting performance targets
  • Build and maintain a developer platform that enables fast, secure software delivery and improves application stability in production
  • Mentor and coach SRE team members, fostering a culture of learning, collaboration and technical excellence

Requirements

  • BS in Computer Science, Cybersecurity, Software Engineering or a related technical field, or equivalent experience, with 5+ years in site reliability engineering, DevOps or cloud infrastructure roles
  • Proven expertise in container orchestration platforms, ideally Kubernetes
  • Extensive experience with infrastructure-as-code, ideally Terraform
  • Strong background in cloud platforms, ideally AWS
  • Demonstrated experience designing and implementing monitoring, alerting and performance optimization strategies
  • Exceptional troubleshooting and incident management skills for distributed systems
  • Proficiency in at least one scripting or programming language for automation
  • Excellent communication skills with a track record of influencing cross-functional teams
  • Experience leading globally distributed teams in a remote-first environment
  • This role may require obtaining and maintaining a U.S. government security clearance, and candidates must meet federal eligibility requirements
  • Applicants must meet eligibility requirements for access to export-controlled information under U.S. export control laws (EAR and ITAR)

Nice to have

  • Familiarity with observability stacks such as Grafana and Prometheus
  • Experience designing high-availability, disaster recovery and scaling architectures
  • Exposure to GCP and Azure cloud environments
  • Leadership experience in highly regulated industries such as defense, finance or critical infrastructure
  • Experience with U.S. federal compliance frameworks and authorization processes (FedRAMP, DoD ATO, NIST 800-53 and related standards)
  • Experience preparing, delivering and maintaining software offerings through AWS Marketplace and other cloud marketplaces (Azure, Google Cloud)
  • Open-source contributions in reliability, DevOps or infrastructure tooling
  • Certifications in cloud infrastructure, reliability or DevOps engineering (e.g., CKA, CKAD, AWS Certified Solutions Architect)

Soft skills

Technical leadership and mentoringCross-functional influence and collaborationExcellent communicationStrategic thinking

What we offer

  • Salary range of $145,000-$200,000 (market-based pay)
  • Remote-first, open-source company
Education: BS in Computer Science, Cybersecurity, Software Engineering or a related technical field, or equivalent experience