Senior Site Reliability Engineer

Job Overview

LeanData helps the world’s fastest-growing companies automate, simplify, and accelerate revenue. We are looking for a Senior Site Reliability Engineer to lead the strategic evolution of our cloud infrastructure. Reporting directly to the SVP of Engineering, this role is designed for a builder - someone who wants to move beyond maintenance and into the realm of architectural transformation. You will have the autonomy to evaluate our existing AWS footprint and lead the charge in modernizing our environment. Your mission is to take a high-velocity system and implement the best practices, guardrails, and automated architectures that will support our next 10x of scale. You will be the primary authority on reliability, performance, and infrastructure security. This is a hybrid role based in our Santa Clara, CA office, with an in-office schedule of two days per week – Monday and Wednesday.

Key Responsibilities

• Architectural Modernization: Lead the design and implementation of a scalable, Cloud-First AWS architecture. Drive the transition toward fully automated, state-of-the-art Infrastructure as Code (Terraform).


• High Availability & Resilience: Design and implement robust Disaster Recovery (DR) and Business Continuity plans, moving our services toward a zero-downtime deployment model.


• Performance & Capacity Engineering: Own the strategy for capacity planning and autoscaling. Optimize our compute resources (EC2, Lambda) to handle bursty traffic patterns with precision and cost-efficiency.


• Advanced Observability: Define our monitoring and alerting philosophy using New Relic for deep APM and system insights. Partner with IncidentIO to ensure we catch and resolve issues before they impact customers.


• Streamlined CI/CD: Partner with feature teams to refine Change Management and CI/CD pipelines, ensuring code moves from commit to production safely and predictably.


• Cloud Security: Harden our network architecture and application security posture, including WAF management and secure service-to-service communication.

Required Qualifications

• Experienced Architect: 5+ years of experience in SRE, DevOps, or Systems Engineering, with a proven track record of managing complex AWS environments.


• Proven Incident Commander: Demonstrate calm, decisive leadership during high-pressure outages. Extensive experience running blameless postmortems and driving remediation work.


• Observability Pro: Deep experience configuring New Relic (or similar platforms) to create meaningful dashboards, SLIs, and SLOs.


• Automation Advocate: Believe that manual intervention is a bug. Deep experience with Terraform and a Code-First approach to infrastructure.


• Strategic Problem Solver: Ability to formulate a clear, prioritized roadmap to move complex architectures toward industry best practices.


• Collaborative Leader: Enjoy working with feature engineers to help them build reliability-by-design into their services.


• Education: A Bachelor’s degree in Computer Science, Engineering, or a related technical field (or equivalent professional experience).