Senior Site Reliability Engineer (req-220)

Company: CATHEXIS
Location: Colorado Springs
Posted on: February 15, 2026

Job Description:

Job Description Job Description Team CATHEXIS elevates the government contracting experience through rapid response, deep skill, and thoughtful problem-solving and communication. Our core capabilities are our top-tier program and project management, data analytics, and audit services, the backbone of which is our integrated approach to operational excellence. You worked hard to get to where you are. You strive to make every day better than the day before. So do we. Team CATHEXIS operates with an all-in mindset. We are working together to create a company that supports our shared values and individual goals. Our values are centered around Respect, Engagement, Customer Service, Integrity, Teamwork, and Excellence in everything we do for our employees, clients, partners, and communities. We believe success is best when we listen and lead with empathy; model high standards of ethics to provide a rewarding candidate experience; work hard, have fun, and appreciate the strengths we all bring to the team; and empower our employees to create innovative and trusted results. We are looking for a dynamic Senior Site Reliability Engineer (SRE) to join our team. The Site Reliability Engineer (SRE) will manage, monitor, and optimize clusters on Kubernetes. Together, we’re accelerating our clients’ digital transformation through the building and deployment of data-driven, scalable AI solutions. The ideal candidate will have a deep understanding of Kubernetes, Cloud Infrastructure, and Infrastructure as Code (IaC) practices. You will be responsible for ensuring the reliability and scalability of our clients’ Kubernetes clusters and Cloud Infrastructure. The person in this role will work onsite at Peterson Space Force Base. Responsibilities The responsibilities include, but are not limited to: Monitor and Manage Kubernetes Clusters: Ensure the stability, health, and scalability of Kubernetes Clusters, deploying applications and services on Kubernetes Kubernetes Management: Deploy, monitor, and scale applications on Kubernetes clusters. Maintain Helm charts, manage services, and ensure resource allocation for optimal cluster performance Containerization & Deployment: Design and maintain Docker-based microservices architecture, ensuring consistent and reproducible deployments across staging, QA, and production environments Cloud Infrastructure Management: Work with leading Cloud Platforms (AWS, Azure and/or GCP) to set up, configure, and manage infrastructure resources using Infrastructure as Code (Terraform, CloudFormation, etc.) Monitoring & Incident Response: Set up monitoring solutions, define alerts, and manage the incident response process for any issues related to Jenkins or Kubernetes clusters Automate Infrastructure Processes: Build automation tools for scaling, monitoring, and maintaining infrastructure using modern tools like Terraform, Ansible, Linux, or equivalent Collaborate Across Teams: Work closely with development, services, and operations teams to ensure a seamless integration between application development, deployment, and infrastructure Security & Compliance: Ensure all systems follow best practices in terms of security and compliance with relevant regulations. This includes role-based access, encryption, and automated vulnerability scanning Requirements Active TOP SECRET clearance or higher is required Bachelor’s degree (or equivalent) in computer science or related discipline A minimum of five (5) years of experience working with on-premise and off-premise cloud environments Experience with AWS and/or Azure Hands-on experience with a range of open-source technologies, such as Linux, Docker, Kubernetes, K8s, Terraform, Helm, PostgreSQL, or similar technologies Ability to program (structured and OOP) using one OR more high-level languages, such as Python, Java, C/C++, Ruby, and JavaScript Experience with distributed storage technologies such as NFS, HDFS, Ceph, and Amazon S3, as well as dynamic resource management frameworks (Apache Mesos, Kubernetes, Yarn) Proactive approach to identifying problems, performance bottlenecks, and areas for improvement Ability to lead and work independently in an Agile/Scrum environment Real passion for developing team-oriented solutions to complex engineering problems Ability to thrive in an autonomous, empowering and exciting environment Great verbal and written communication skills to collaborate multi-functionally and improve scalability The ability to work on multiple concurrent projects is essential. Strong self-motivation and the ability to work with minimal supervision Must be a team-oriented individual, energetic, result & delivery oriented, with a keen interest in quality and the ability to meet deadlines Must have demonstrated experience serving in, or supporting, a federal agency that requires a Top Secret clearance. Desired Skills Hands-on experience deploying and operating applications using IaaS and PaaS on major cloud providers, such as Amazon AWS, Microsoft Azure, or Google Cloud Services Experience with deep learning, natural language processing, computer vision, or reinforcement learning Convey highly technical concepts and information in written form to technical and non-technical audiences Benefits CATHEXIS offers competitive compensation packages to all eligible employees. Our goal is to provide a compensation package that reflects the value you bring to our team, is competitive with market rates, and promotes your financial security and personal well-being. The annual salary range for this role is $160,000 - $180,000. Please note that the salary information provided is a general guideline. CATHEXIS considers various factors in its final offer, including location, qualifications, experience, and skills. CATHEXIS is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law. If you are an individual with a disability and would like to request a reasonable accommodation as part of the employment selection process, please contact the Recruiting@cathexiscorp.com.

Keywords: CATHEXIS, Castle Rock , Senior Site Reliability Engineer (req-220), IT / Software / Systems , Colorado Springs, Colorado