Lead Engineer - Site Reliability

Frontier-Airlines; Denver (CO); Hybrid; USD 110,000 - 146,000; Full time

Benefits offered by this job

Medical/Dental/Vision

401(k) retirement plan

Travel privileges

Hybrid schedule

Employee discounts

HOPE League

Job summary

Frontier Airlines is seeking a Lead Site Reliability Engineer (SRE) in Denver to ensure reliability, scalability, and performance of mission-critical platforms. You will drive automation, observability, and best practices across engineering, security, and operations teams.

The role emphasizes AWS, Kubernetes, DevSecOps, and capacity planning, with a focus on proactive improvement and incident leadership in a hybrid, Denver-based setting.

Qualifications

• Bachelor’s degree or higher in CS, Engineering or IT.
• 10+ years of software engineering or cloud experience.
• 5+ years of hands-on AWS architecture.
• Experience leading large-scale migrations and modernization initiatives.

Responsibilities

• Lead design of highly available, scalable cloud platforms using AWS.
• Define and execute reliability strategies, SLOs/SLIs, and error budgets for critical services.
• Architect and operate Kubernetes-based platforms for microservices.
• Establish enterprise standards for reliability, availability, and disaster recovery.
• Partner with engineering, security, and operations teams to improve service reliability.
• Drive DevSecOps adoption with CI/CD, IaC, and self-service capabilities.
• Define observability standards including monitoring, logging, tracing, and analytics.
• Lead incident response, RCA, and continuous improvement initiatives.
• Identify and eliminate single points of failure through resilient architectures.
• Mentor SREs and engineers in reliability practices and automation.

Skills

AWS

Kubernetes

Observability

DevSecOps

CI/CD

IaC

SRE

Automation

Education

Bachelor’s degree in CS/Engineering/IT

Tools

Terraform

CloudFormation

Job description

• Pay or shift range: $110,114 USD to $146,175 USD. The estimated range is the budgeted amount for this position. Final offers are based on various factors, including skill set, experience, location, qualifications and other job-related reasons.

Description

At Frontier, our mission is to Make Every Flight Count. That mission guides how we support our customers, our people and the operation every day.

As a Frontier employee, your work connects to more than a single role. Whether you’re supporting flights, helping customers, maintaining aircraft, leading teams or working behind the scenes, you help create a travel experience that is safe, reliable and built around value.

Our work is guided by our core values: customer first, safety always, operational excellence and one team. These values shape how we make decisions, support each other and deliver for the people who count on us.

Support for work, life and travel

Frontier offers benefits, programs and travel privileges designed to support eligible employees at work and beyond. Availability may vary by role, employment status, eligibility, location, schedule, applicable policies and current plan details.

Depending on role and eligibility, available benefits and programs may include:

• Medical, dental and vision coverage
• 401(k) retirement savings options
• Paid holidays, vacation time and sick time
• Travel privileges on Frontier Airlines and participating partner airlines, based on current program rules and availability
• Buddy passes, based on eligibility and program rules
• Travel-related discounts and employee discounts on select products, services and vendors
• A hybrid schedule for eligible headquarters roles based in Denver, Colorado
• Business casual dress options for eligible corporate and support roles
• Employee support programs and resources, including the HOPE League, Frontier Airlines’ nonprofit organization

Frontier Airlines is a Denver-based airline serving destinations across the United States and select international markets. Our people support every part of the travel journey, from airport operations and flight crews to aircraft maintenance, customer support, corporate teams and more.

We’re focused on delivering meaningful value by making travel more accessible, practical and easy to personalize for our customers.

What Will You Be Doing?

As a Lead Site Reliability Engineer (SRE), you will serve as a senior technical leader responsible for ensuring the reliability, scalability, performance, and operational excellence of mission‑critical technology platforms. You will partner with engineering, platform, security, and operations teams to build resilient systems, drive automation, improve service availability, and establish reliability‑focused engineering practices across the organization.

This role requires deep expertise in AWS, Kubernetes, observability, distributed systems, DevSecOps, and Site Reliability Engineering principles, with the ability to influence engineering teams and operational strategies across the enterprise.

Essential Functions

• Lead the design and implementation of highly available, resilient, and scalable cloud platforms leveraging AWS services and cloud‑native technologies.
• Define and execute reliability engineering strategies, service level objectives (SLOs), service level indicators (SLIs), and error budgets across critical business services.
• Architect and operate Kubernetes‑based platforms supporting containerized and microservices‑based applications.
• Establish enterprise standards for reliability, availability, disaster recovery, resiliency testing, and operational excellence.
• Partner with software engineering, platform engineering, security, and operations teams to improve service reliability and reduce operational risk.
• Drive adoption of DevSecOps practices, CI/CD automation, Infrastructure as Code (IaC), and self‑service platform capabilities.
• Define and implement observability standards including monitoring, logging, distributed tracing, synthetic monitoring, and operational intelligence.
• Lead incident response, post‑incident reviews, root cause analyses (RCA), and continuous improvement initiatives.
• Identify and eliminate single points of failure through proactive reliability engineering and resilient architecture practices.
• Design and implement automated remediation, self‑healing capabilities, and proactive alerting solutions to improve operational efficiency.
• Lead capacity planning, performance engineering, availability management, and scalability assessments.
• Partner with FinOps and engineering teams to optimize cloud resource utilization while maintaining reliability objectives.
• Evaluate emerging technologies, AIOps, Generative AI, and intelligent automation solutions to improve platform reliability and operational effectiveness.
• Mentor SREs, platform engineers, and software engineers in reliability practices, observability, automation, and operational excellence.
• Develop executive‑level reliability roadmaps, operational strategies, and platform investment recommendations.

Additional Responsibilities

• Act as a trusted advisor to executive leadership on reliability strategy, operational risk management, and service resiliency initiatives.
• Support platform evaluations, architecture reviews, and technology decisions through the lens of reliability, scalability, and maintainability.
• Provide technical leadership during major incidents, business‑critical outages, and high‑severity escalations.
• Assist with compliance initiatives including PCI‑DSS, SOC 2, security governance, and operational resilience controls.
• Contribute to enterprise‑wide cloud transformation, platform engineering, and application modernization programs.
• Champion a culture of reliability, automation, operational ownership, and continuous improvement across engineering teams.

Qualifications

• Bachelor’s degree in computer science, Engineering, Information Technology, or a related discipline.
• 10+ years of experience in software engineering, cloud architecture, infrastructure engineering, or enterprise architecture.
• 5+ years of hands‑on AWS architecture and cloud transformation experience.
• Proven success leading large‑scale cloud migrations and modernization initiatives.
• Experience designing and supporting highly available, mission‑critical, customer‑facing platforms.
• Deep understanding of Kubernetes, container orchestration, microservices, and distributed systems.
• Extensive experience with DevSecOps, CI/CD pipelines, Infrastructure as Code, and automation frameworks.
• Strong knowledge of Site Reliability Engineering (SRE), operational excellence, and platform reliability practices.
• Experience implementing cloud governance, FinOps, and cost optimization programs.

Preferred Qualifications

• Experience supporting large‑scale enterprise, eCommerce, aviation, travel, SaaS, or high‑volume digital platforms.
• Experience building internal developer platforms and platform engineering capabilities.
• AWS Professional and/or Kubernetes certifications.
• Experience with AIOps, intelligent automation, and reliability analytics.

Knowledge, Skills and Abilities

• Reliability & Platform Technologies
• Amazon Web Services (AWS)
• Container Platforms
• Infrastructure as Code (Terraform, CloudFormation)
• Cloud Networking and Security
• High Availability & Disaster Recovery
• Performance Engineering & Capacity Planning
• Site Reliability Engineering
• Error Budget Management
• Reliability Engineering
• Availability & Resiliency Design
• Root Cause Analysis (RCA)
• Observability & Operations
• Monitoring & Alerting
• Synthetic Monitoring
• AIOps & Event Correlation
• Incident & Problem Management
• Change & Release Management
• DevSecOps & Automation
• CI/CD Automation
• DevSecOps Practices
• Infrastructure Automation
• Platform Automation
• Self‑Healing Systems
• Configuration Management
• Reliability Automation
• Leadership & Business Skills
• Operational Strategy & Reliability Roadmaps
• Executive Communication
• Technical Leadership Without Direct Authority
• Cross‑Functional Collaboration
• Major Incident Leadership

Equipment Operated

Standard office equipment, including PC, copier, fax machine, printer

Typical office environment, adequately heated and cooled

Physical Effort

Generally, not required.

Supervision Received

General Direction: The incumbent normally receives little instruction on day-to-day work and receives general instructions on new assignments.

Salary Range: $110,114 - $146,157

Please note: this role will close on or before 10/31/26.

Positions Supervised

None

Disclaimer: The above statements are intended only to describe the general nature and level of work required of the referenced position; they are not intended to be an exhaustive list of all responsibilities, duties, and skills required of individuals in this position. Please be advised that duties and expectations of this position may be subject to change.

Frontier Airlines, Inc. is an equal opportunity employer and, as such, is committed to providing equal employment opportunities to all qualified applicants without regard to race, color, religion, sex, national origin, age, marital status, veteran status, sexual orientation, gender identity or expression, disability status, pregnancy, genetic information, citizenship status or any other basis protected by federal, state, or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.

Frontier Airlines is a Zero Tolerance Drug‑Free Workplace. All prospective DOT safety‑sensitive employees are subject to pre‑employment testing for the following drugs and their metabolites: Marijuana, Cocaine, Amphetamines, Opioids and Phencyclidine (PCP). Further, any DOT safety‑sensitive job applicant who is found to have tested positive on any required drug or alcohol test at a former employer will be considered ineligible for employment with Frontier.

Colorado Residents: 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.

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws.For further information, please review the Know Your Rights notice from the Department of Labor.