Senior / Lead Site Reliability Engineer

Zelis is seeking a Senior / Lead Site Reliability Engineer to advance enterprise reliability and operational excellence. The role focuses on improving application performance and observability, automating operational processes, supporting resilient AWS workloads, leading incident resolution, and partnering with engineering teams.

Responsibilities

• Champion Site Reliability Engineering principles and best practices across the Zelis technology organization
• Establish and improve Service Level Indicators (SLIs), Service Level Objectives (SLOs), and reliability measurements
• Identify systemic reliability risks and develop engineering solutions to eliminate recurring operational issues
• Reduce manual operational toil through automation, self-healing capabilities, and improved engineering practices
• Collaborate with application development, infrastructure, cloud engineering, and security teams to improve production readiness
• Drive continuous improvement through measurable reliability, performance, and operational efficiency outcomes
• Design, develop, and maintain advanced PowerShell scripts, automation frameworks, and operational tooling
• Troubleshoot and optimize enterprise applications built on Microsoft .NET and C# technologies
• Analyze application behavior, dependencies, configuration, and performance to identify underlying technical issues
• Partner with software engineering teams to improve application reliability, error handling, logging, and operational supportability
• Develop reusable automation and engineering solutions that reduce repetitive manual intervention
• Integrate automation into CI/CD pipelines and operational workflows
• Serve as a technical subject matter expert in New Relic and Splunk, driving effective implementation and adoption of observability practices
• Design and improve application performance monitoring (APM), infrastructure monitoring, distributed tracing, logging, and alerting
• Develop meaningful dashboards, alerts, and service health indicators that provide actionable operational insights
• Analyze application telemetry, logs, metrics, and traces to identify performance bottlenecks and reliability concerns
• Improve proactive detection capabilities while reducing alert fatigue and unnecessary operational noise
• Support enterprise observability standardization, including monitoring coverage, alert ownership, and operational readiness
• Optimize observability configurations and telemetry consumption to balance visibility, effectiveness, and cost
• Support and improve production workloads operating within Amazon Web Services (AWS)
• Partner with cloud engineering teams to improve infrastructure design, monitoring, and resilience
• Identify opportunities to optimize AWS resource utilization, performance, and operational costs
• Promote Infrastructure as Code (IaC), automated deployments, and repeatable infrastructure management practices
• Provide advanced technical leadership during critical production incidents and complex service disruptions
• Perform deep technical troubleshooting across applications, infrastructure, cloud services, and integrated systems
• Collaborate with Major Incident Management teams to accelerate service restoration and minimize business impact
• Lead or contribute to technical root cause analysis and post-incident reviews
• Translate incident findings into actionable engineering improvements that prevent recurrence
• Improve incident detection, diagnosis, mitigation, and recovery through automation and observability
• Develop and maintain operational runbooks, troubleshooting documentation, and automated remediation procedures
• Participate in production support and on-call responsibilities as required
• Serve as a senior technical resource and trusted advisor for reliability engineering practices
• Mentor engineers and promote a culture of automation, ownership, and continuous improvement
• Partner with application development teams to improve software reliability throughout the development lifecycle
• Influence architectural and operational decisions through technical expertise and data-driven recommendations
• Lead complex technical initiatives involving multiple engineering teams and technology platforms
• Communicate technical findings, risks, and recommendations effectively to engineering teams and technology leadership
• Drive engineering improvements that deliver measurable reductions in incidents, recovery times, and operational effort

Skills

• 7+ years of experience in software engineering, systems engineering, production operations, DevOps, or Site Reliability Engineering
• 3+ years of experience applying Site Reliability Engineering principles in enterprise production environments
• Advanced proficiency in PowerShell scripting and automation, including developing maintainable, reusable automation solutions
• Strong understanding of Microsoft .NET / .NET Core applications, including application architecture, configuration, troubleshooting, and performance analysis
• Hands-on experience with New Relic, including APM, infrastructure monitoring, dashboards, alerting, and application troubleshooting
• Hands-on experience with Splunk, including SPL queries, log analysis, dashboards, and troubleshooting production application issues
• Strong working knowledge of AWS services and cloud architecture, including EC2, CloudWatch, IAM, VPC, and related infrastructure services
• Experience troubleshooting distributed applications, APIs, application integrations, and complex production environments
• Strong understanding of Windows Server environments, application hosting, and enterprise infrastructure
• Experience implementing monitoring, alerting, logging, and automated remediation solutions
• Strong understanding of SRE concepts, including:
• Service Level Indicators (SLIs) and Service Level Objectives (SLOs)
• Error budgets and reliability-based decision-making
• Incident response and blameless postmortems
• Toil reduction and operational automation
• Observability and proactive monitoring
• Capacity planning, performance engineering, and resilience
• Continuous improvement and reliability measurement
• Experience with CI/CD pipelines, Git-based workflows, and automated deployments
• Strong troubleshooting skills across application, operating system, network, and cloud infrastructure layers
• Experience conducting root cause analysis and implementing long-term corrective actions
• Ability to independently lead complex technical investigations and engineering initiatives
• Please note at this time we are unable to proceed with candidates who require visa sponsorship now or in the future
• Experience developing applications or operational tools using C# and .NET
• Experience with AWS automation using PowerShell, AWS CLI, SDKs, or Infrastructure as Code
• Experience with Terraform, CloudFormation, or similar infrastructure automation technologies
• Experience with Ansible for configuration management, automation, and infrastructure orchestration
• Experience administering and troubleshooting Linux Server environments in enterprise production systems
• Experience with containerization and orchestration technologies such as Docker and Kubernetes
• Experience with Azure DevOps, GitHub Actions, Jenkins, or similar CI/CD platforms
• Experience implementing synthetic monitoring, distributed tracing, and automated service health validation
• Familiarity with SQL Server, database performance troubleshooting, and application-to-database connectivity
• Experience supporting business-critical applications in healthcare, financial technology, payment processing, or other highly regulated environments
• AWS, New Relic, Splunk, or relevant cloud engineering certifications

Benefits

• Discretionary bonus plans, commissions, or other incentives depending on the role.
• A 401k plan with employer match.
• Flexible paid time off.
• Holidays.
• Parental leaves.
• Life and disability insurance.
• Health benefits including medical, dental, vision, and prescription drug coverage.
• A flexible hybrid approach, with in-office presence guided by team and business needs rather than a fixed weekly schedule.

Company Overview