About Lumen Lumen connects the world. We are igniting business growth by connecting people, data and applications – quickly, securely, and effortlessly. Together, we are building a culture and company from the people up – committed to teamwork, trust and transparency. People power progress. We’re looking for top-tier talent and offer the flexibility you need to thrive and deliver lasting impact. Join us as we digitally connect the world and shape the future. The Role The role of this position is to serve as a Linux and virtual infrastructure system administrator, for both on-premise and cloud based infrastructure. Primary functions are to design, deploy, and support infrastructure solutions for the enterprise. They will be expected to stay abreast of advances in technologies; assessing, making recommendations, and deploying said technologies. They are expected to be a leader in collaboration efforts across organizations (architecture, development, operational teams, business units, etc.) in solving critical business and technology issues while improving customer experience. Location and Schedule This is a Work From Home position available from any US-based location. The schedule currently rotates every 7 weeks. The Main Responsibilities - Provide day-to-day support/administration of OS (Linux/Unix) and associated infrastructure - Will provide support directly to internal stakeholders throughout the enterprise to enable and support highly available application solutions - Perform site reliability engineering functions - Assessing standards, practices, technologies, and ecosystems - Make recommendations for improvements and in support of going forward strategies - Facilitate implementation tasks (Examples: operational standards, automation, developing/implementing code, etc.) - Develop, document, deploy, and support best practices/procedures, risk assessments, contingency planning, security, and disaster recovery & business continuity planning - Provide technical support to internal stakeholders through the ability to analyze, troubleshoot, and solve complex technical problems across multiple technical disciplines - Interact and communicate with various levels of management on projects and initiatives - Provide leadership in the migration of legacy technologies to current standards What We Look For in a Candidate - Bachelor’s degree (Computer Science, MIS, Software Engineering or related) or equivalent experience - Minimum of 4 years of experience with Linux (Red Hat, Rocky, Ubuntu, etc.) administration - Minimum of 4 years of experience with Unix (Solaris, HP-UX, etc.) administration - Experience with automation and orchestration technologies (Ansible, Terraform, shell scripting, etc.) - Excellent troubleshooting and diagnostic skills across the full IT technology stack - Strong interpersonal, written/verbal communication, and team dynamic skills - Ability to clearly communicate technology topics across a broad range of technical and non-technical backgrounds Compensation This information reflects the anticipated base salary range for this position based on current national data. Minimums and maximums may vary based on location. Individual pay is based on skills, experience and other relevant factors. Location Based Pay Ranges $84,629 - $112,838 in these states: AL AR AZ FL GA IA ID IN KS KY LA ME MO MS MT ND NE NM OH OK PA SC SD TN UT VT WI WV WY $88,860 - $118,480 in these states: CO HI MI MN NC NH NV OR RI $93,092 - $124,122 in these states: AK CA CT DC DE IL MA MD NJ NY TX VA WA Lumen offers a comprehensive package featuring a broad range of Health, Life, Voluntary Lifestyle benefits and other perks that enhance your physical, mental, emotional and financial wellbeing. We're able to answer any additional questions you may have about our bonus structure (short-term incentives, long-term incentives and/or sales compensation) as you move through the selection process. Learn more about Lumen's:BenefitsBonus Structure Requisition #: 341208 Background Screening If you are selected for a position, there will be a background screen, which may include checks for criminal records and/or motor vehicle reports and/or drug screening, depending on the position requirements. For more information on these checks, please refer to the Post Offer section of our FAQ page. Job-related concerns identified during the background screening may disqualify you from the new position or your current role. Background results will be evaluated on a case-by-case basis. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records. Equal Employment Opportunities We are committed to providing equal employment opportunities to all persons regardless of race, color, ancestry, citizenship, national origin, religion, veteran status, disability, genetic characteristic or information, age, gender, sexual orientation, gender identity, gender expression, marital status, family status, pregnancy, or other legally protected status (collectively, “protected statuses”). We do not tolerate unlawful discrimination in any employment decisions, including recruiting, hiring, compensation, promotion, benefits, discipline, termination, job assignments or training. Privacy Notice Lumen is committed to protecting the privacy and security of personal information collected during the recruitment and hiring process. Our Privacy Notice explains how we collect, use, disclose, and protect applicant information, as well as how individuals may request access to or deletion of their personal data. To review Lumen’s Privacy Notice, please visit: https://jobs.lumen.com/global/en/privacy-notice Disclaimer The job responsibilities described above indicate the general nature and level of work performed by employees within this classification. It is not intended to include a comprehensive inventory of all duties and responsibilities for this job. Job duties and responsibilities are subject to change based on evolving business needs and conditions. In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information. Please be advised that Lumen does not require any form of payment from job applicants during the recruitment process. All legitimate job openings will be posted on our official website or communicated through official company email addresses. If you encounter any job offers that request payment in exchange for employment at Lumen, they are not for employment with us, but may relate to another company with a similar name.

• Combine software and systems engineering to help build and run large-scale, distributed and fault-tolerant systems • Using automation and Infrastructure as a Code (laC) to continuously improve the reliability, scalability, and performance of services deployed on AWS • Performance tuning and configuration of both Linux system and application parameters supporting highly concurrent web stacks • Manage infrastructure through code using configuration management and laC templating software such as Terraform and Puppet • Documenting procedures and knowledge base articles throughout problem resolution and architecture development processes • Monitoring the availability, performance and health of production systems in support of meeting service level objectives using monitoring systems such as Icinga, Prometheus, Grafana, CloudWatch, and Loki • Participating in emergency incident response on-call rosters • Practicing blameless postmortems that lead to improvements in resiliency and reductions in alert fatigue

• Collaborate with service engineering teams to design, implement, and maintain scalable and resilient infrastructure solutions optimizing for performance, resilience, and cost. • Ensure infrastructure aligns with business requirements and industry standards. • Leverage Terraform to automate infrastructure provisioning and configurations. • Implement SRE principles to improve system reliability and reduce downtime. • Improve developer workflows by creating self-service tools, optimizing CI/CD pipelines, and enhancing deployment processes to remove friction. • Develop and maintain robust monitoring and alerting systems to proactively identify and resolve issues. • Lead incident responses, manage on-call rotations, and facilitate post-incident reviews to drive continuous improvement and resilience. • Automate everything—drive adoption of Infrastructure as Code (IaC) and build automated pipelines for testing, monitoring, and deployments. • Leverage your excellent written and verbal communication skills, to create communications on upcoming changes and how they affect teams.

This description is a summary of our understanding of the job description. Click on 'Apply' button to find out more. Role Description Flex is looking for a seasoned Senior Infrastructure Engineer with a passion for performance optimization to join our dynamic Infrastructure Team. - Be part of the Infrastructure Engineering team responsible for creating a sustainable platform that ensures the effectiveness, reliability, and scalability of our systems. - Design, build, and maintain robust and scalable infrastructure. - Collaborate closely with service engineering teams to automate processes, streamline operations, and ensure optimal system performance and reliability in our cloud infrastructure on AWS and GCP. - Utilize deep knowledge of cloud architecture and SRE principles to steer AI tools effectively. - Influence key infrastructure and architecture decisions while ensuring high reliability and smooth delivery pipelines. Qualifications - Proven experience in building, scaling, and monitoring cloud infrastructure on AWS, especially EKS, S3, RDS, API Gateway, Load Balancers, VPC, Lambdas, DocumentDB, and DynamoDB. - Proven experience using Terraform to update and maintain cloud infrastructure. - Proven experience with containerized applications, Kubernetes, and microservice deployments. - Strong knowledge of GitHub Actions and CI/CD best practices. - Experience with developer productivity tools: designing CI/CD workflows, building internal tools, and creating self-service solutions to streamline software development. - Knowledge of monitoring and observability tools and frameworks, with working knowledge of Datadog being a plus. - Familiarity with networking concepts (DNS, load balancing, firewalls, VPNs). - Strong collaboration skills with the ability to work effectively across teams and communicate technical ideas clearly. - Experience coding/reading in one of the industry standard languages such as Java, Python, or TypeScript. Requirements - Minimum of 5 years of cloud infrastructure experience. Benefits - Competitive medical, dental, and vision available from Day 1. - Company equity. - 401(k) plan with company match (our company match kicks off at the beginning of 2026). - Unlimited paid time off + 13 company paid holidays. - Parental leave. - Flex Cares Program. - Free Flex subscription.