Senior Engineer - Infrastructure

OneMain Financial • West Valley, UT

1d

About The Position

The Senior Engineer - Infrastructure supports business-critical OneMain Auto applications and their underlying technology components, providing advanced production support and technical escalation. The role troubleshoots complex issues across Windows Server, IIS, SQL Server, Azure IaaS, authentication, connectivity, and dependent services; maintains and improves application operating components within enterprise standards; and works with internal technology teams and external partners to resolve technical problems.

The position emphasizes reliability, root cause analysis, observability, and automation. It supports deployments, configuration changes, patching, maintenance, and production readiness, participates in an on-call rotation, and coordinates with network teams on dependencies and connectivity. Targeted platform engineering work includes reusable configurations and tooling, configuration standardization, Infrastructure as Code practices, and modernization toward containerized or managed runtime platforms.

The position supports OneMain Auto within OMFS Tech Ops & Eng Mgmt. Its primary objective is to maintain reliable production operations while modernizing the application-hosting components and operational practices supporting OneMain Auto systems.

Requirements

• At least 5 years of experience in production operations, site reliability engineering, systems/application support, or a closely related technical role.
• Strong hands-on experience supporting Windows Server in production environments.
• Strong working knowledge of IIS administration, configuration, troubleshooting, and application hosting.
• Working knowledge of Microsoft SQL Server from a production support and application operations perspective.
• Strong PowerShell scripting and automation skills.
• Experience supporting Microsoft Azure environments, with emphasis on IaaS workloads.
• Strong understanding of network fundamentals, DNS, routing, firewalls, load balancing, TLS/certificates, and cloud connectivity sufficient to troubleshoot cross-system dependencies.
• Demonstrated ability to perform advanced troubleshooting and root cause analysis across complex, multi-tier systems.
• Experience working with external vendors or technology partners on high-severity technical escalations.
• Ability to coordinate work across multiple enterprise technology teams in a cloud-first environment.
• Production ownership and reliability mindset.
• Advanced systems-level troubleshooting and analytical thinking.
• Strong technical communication with internal teams, vendors, and external partners.
• Automation-first approach to repetitive operational work.
• Ability to operate effectively in high-availability, business-critical environments.
• Strong cross-team coordination and accountability.

Nice To Haves

• Experience with Infrastructure as Code tools such as Terraform, Bicep, ARM templates, or equivalent.
• Experience with containerization technologies such as Docker, Kubernetes, or Azure Kubernetes Service (AKS).
• Exposure to SRE practices such as service level indicators (SLIs), service level objectives (SLOs), error budgets, and toil reduction.
• Experience with CI/CD pipelines and production deployment automation.
• Experience supporting financial services or other regulated production environments.
• Relevant Microsoft Azure certifications.

Responsibilities

• Provide advanced Level 3 production support for business-critical OneMain Auto applications and supporting technology components.
• Troubleshoot application-hosting and system issues across Windows Server, IIS, SQL Server, Azure IaaS, authentication, connectivity, and dependent services.
• Build, configure, maintain, and improve operating components used by OneMain Auto applications within approved enterprise standards.
• Serve as the Level 4 technical escalation point for external partners, vendors, and third-party service providers, coordinating complex technical investigations through resolution.
• Perform root cause analysis and implement corrective and preventive actions to improve reliability and reduce recurring production issues.
• Partner with OneMain incident response teams as the technical subject matter expert for supported systems, without owning incident command or coordination.
• Improve observability through monitoring, logging, alerting, health checks, and operational telemetry.
• Reduce operational toil through PowerShell and other approved automation methods.
• Support deployments, configuration changes, patching, maintenance activities, and production readiness for OneMain Auto systems.
• Maintain working knowledge of network dependencies and cloud networking concepts, coordinating with dedicated network teams when changes or troubleshooting are required.
• Collaborate across application development, network, database, security, IAM, platform, cloud, and enterprise operations teams.
• Participate in an on-call rotation supporting production systems.
• Develop reusable configurations, scripts, deployment patterns, and operational tooling to improve consistency and reliability.
• Contribute to standardization efforts that reduce configuration drift across environments.
• Support Infrastructure as Code practices where appropriate for repeatable provisioning and configuration.
• Contribute to modernization initiatives, including migration of suitable workloads toward containerized or managed runtime platforms.
• Partner with platform engineering teams to improve the operability, resilience, and lifecycle management of OneMain Auto workloads.

Benefits

• Medical, prescription, dental, vision, hearing, accident, hospital indemnity, and life insurance options.
• Up to 4% matching 401(k).
• Employee Stock Purchase Plan with a 10% share discount.
• Tuition reimbursement.
• Paid time off: 15 vacation days per year plus 2 personal days, prorated based on start date.
• Paid sick leave as determined by state or local ordinance, prorated based on start date.
• Paid holidays: 7 days per year, based on start date.
• Paid volunteer time: 3 days per year, prorated based on start date.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed