OneMain Financial Jobs

Job Overview

We are seeking an experienced Sr. Engineer, Site Reliability (SRE) to drive technical excellence within our global Site Reliability Engineering organization. This role is essential to maintaining and improving the reliability, scalability, and performance of our multi-cloud SaaS platform serving thousands of customers worldwide. The successful candidate will provide hands-on technical expertise in incident response, system optimization, and reliability engineering practices across our complex technology stack. Off hours support as needed.

This is a hybrid position based at Windmill Lane, Dublin 2, our strategic hub for AI development in Ireland.

Responsibilities

Technical Leadership:

• Provide technical guidance within a team of 5+ SRE engineers across one or more geographic regions (US, Ireland, or India)

• Provide technical mentorship and skill development for team members

• Contribute to technical decision-making for complex reliability and performance challenges

• Conduct architecture reviews and provide guidance on system design for reliability

• Facilitate post-incident reviews and support implementation of preventive measures

Incident Management & Response:

• Participate in enterprise-wide incident management, ensuring rapid prevention, detection, response, and resolution

• Develop and maintain runbooks and emergency response procedures

• Conduct root cause analysis and ensure comprehensive documentation

• Participate in 24/7 on-call rotation and escalation procedures across global teams

• Interface with Engineering teams and Incident Manager during critical incident resolution

Platform Reliability & Performance:

• Monitor and optimize multi-cloud infrastructure (AWS primary, Azure, GCP)

• Ensure reliability of core services: AWS resources, Auth0/Okta authentication, databases (SQL Server, PostgreSQL, MongoDB), and legacy Java applications

• Implement and maintain SLIs, SLOs, and error budgets for assigned services

• Drive capacity planning and performance optimization initiatives

Automation & Tooling:

• Design automation solutions to reduce manual operational overhead

• Develop monitoring strategies using New Relic, Grafana, and Sumo Logic

• Create infrastructure-as-code for reliable deployments

• Build self-healing systems and automated remediation workflows

Qualifications

Technical Experience:

• 6+ years in SRE, DevOps, or Infrastructure Engineering roles with 2+ years in senior positions

• Deep hands-on experience with multi-cloud environments (AWS required, Azure preferred)

• Strong Linux system administration and troubleshooting

• Experience with containerization (Docker) and orchestration (Kubernetes, ECS)

• Proficiency with monitoring tools (New Relic, Grafana, Prometheus)

Leadership & Communication:

• Proven track record mentoring and guiding technical teams

• Experience serving as technical expert during critical incidents

• Strong communication skills with engineering teams and stakeholders

• Cross-functional collaboration in agile environments

SRE & Operations:

• Demonstrated success implementing SRE principles in large-scale production environments

• Experience with ITIL frameworks and tools

• Background in establishing and maintaining SLAs for enterprise SaaS products

Education/Certifications/Licenses:

• Bachelor’s degree in computer science, Engineering, Information Systems, or related technical field

• Equivalent combination of education and experience will be considere

Preferred

• Authentication and identity management systems knowledge

• Infrastructure-as-code tools (Terraform, CloudFormation)

• Education/Certifications/Licenses:

• Cloud certifications (AWS, Azure, or Google Cloud)

• Kubernetes certifications

• New Relic/Grafana monitoring certifications

• Linux certifications (RHCE, LPIC-2