Systems Engineer

FIRST ONSITE, LLC; Englewood (CO); On-site; USD 90,000 - 120,000; Full time

Job summary

First Onsite, LLC is seeking a senior Systems Engineer to monitor health, performance, and security of our technology environment across AWS and Azure. You will escalate for the Service Desk and Infrastructure teams, troubleshooting complex issues to keep critical systems reliable and available.

You will design, deploy, and manage cloud infrastructure, champion IaC with Terraform and CloudFormation, and collaborate via GitHub while strengthening security, compliance, and ITSM practices across

Qualifications

• Bachelor’s degree in CS/IS or equivalent experience.
• 6+ years designing and supporting enterprise systems.
• Strong cloud experience in AWS and Azure.
• Experience with ITSM, incident management, and change control.
• Familiarity with IaC and security best practices.

Responsibilities

• Provide escalation support to Service Desk and infrastructure teams.
• Design, deploy, and manage cloud infrastructure (AWS/Azure).
• Implement IaC using Terraform and CloudFormation.
• Maintain monitoring, security, and compliance across environments.
• Lead incident, change, and problem management activities.

Skills

Systems engineering

Cloud architecture

Windows Server

Azure

AWS

ITIL

Security and compliance

Incident management

DevSecOps

Terraform

CloudFormation

GitHub

ServiceNow

Education

Bachelor's degree in Computer Science / Information Systems

ITIL Foundation certification

AWS Certification (Solutions Architect / SysOps) or Azure cert

HashiCorp Terraform Associate

Tools

Terraform

AWS CloudFormation

AWS & Azure cloud services

Microsoft 365 / Entra ID

ServiceNow ITSM

Docker / Kubernetes

Job description

A Day in the Life of a Systems Engineer

As a Systems Engineer, you'll start your day by monitoring the health, performance, and security of First Onsite's technology environment across AWS and Azure. You'll serve as a key escalation resource for the Service Desk and Infrastructure teams, troubleshooting complex technical issues and helping keep critical systems reliable and available. You'll work with cloud-native technologies, including AWS Lambda serverless applications, containerized workloads, and managed database services such as Amazon RDS and PostgreSQL.

Throughout the day, you'll design, deploy, and manage cloud infrastructure while partnering closely with development teams to build scalable and reliable solutions. You'll champion Infrastructure-as-Code practices using Terraform and AWS CloudFormation and collaborate through GitHub to support development and deployment efforts. You'll also maintain strong monitoring and observability across environments, proactively identifying potential issues and using system insights to improve performance, reliability, and overall user experience.

You'll also play an important role in strengthening First Onsite's security, compliance, and IT service management practices. You'll manage Microsoft 365 and Microsoft Entra ID, support security and compliance initiatives, and oversee the organization's ServiceNow ITSM environment. You'll help lead incident management and change control while continuously looking for opportunities to improve technology, processes, and operations. Every day, your work will combine advanced technical expertise, proactive problem-solving, and collaboration to help build a secure, resilient, and innovative technology environment.

Responsibilities

• Provide escalation support to the Service Desk and vendor partners for technical issues
• Stay current on Office 365 and other platform updates, recommending feature adoption to enhance workflows
• Monitor and improve security and compliance across Office 365, Azure, ServiceNow, RingCentral, and other systems
• Deploy, configure, and maintain Windows Servers, Active Directory, and cloud environments (Azure/AWS)
• Manage and develop knowledge bases, ITSM platforms (ServiceNow), and infrastructure integration projects
• Own and resolve incidents, changes, problems, and system migrations, ensuring high performance and reliability
• Assess, implement, and maintain new technologies, automation tools, and patch/security updates
• Train and coach IT team members on processes, procedures, and best practices
• Administer VOIP, collaboration, and communication platforms, ensuring scalability and maintainability
• Design, deploy, and manage cloud infrastructure across AWS and Azure using Infrastructure-as-Code tools (Terraform, AWS CloudFormation)
• Lead and Execute M365 tenant-to-tenant email and data migrations; integrate infrastructure systems and SaaS applications into the M365 ecosystem

Experience & Education

• 6+ years designing, implementing, and supporting complex systems and enterprise infrastructure
• 4+ years managing Microsoft Windows Server, virtualization, Azure, M365, Active Directory, and Azure AD
• 4+ years migrating emails, files, and systems between M365 tenants and on-premises to cloud solutions
• 2+ years administering ITIL-based ticketing systems and Microsoft Endpoint Manager for OS, patching, and software deployment
• Bachelor's degree in Computer Science, Information Systems, or equivalent experience
• ITIL Foundation certification, preferred
• AWS Certified Solutions Architect, SysOps Administrator, or equivalent AWS certification, preferred
• Microsoft Azure Administrator (AZ-104) or Azure Solutions Architect (AZ-305) certification, preferred
• HashiCorp Terraform Associate certification, preferred
• Experience with containerization (Docker, Kubernetes, Amazon ECS/EKS), preferred
• Familiarity with DevSecOps practices and cloud security frameworks (AWS Well-Architected, CIS Benchmarks), preferred

First Onsite provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic 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.

First Onsite (and its Companies) participates in E-Verify. We will provide the U.S. Social Security Administration (SSA) and, if necessary, the U.S. Department of Homeland Security (DHS) with information from each new employer's Form I-9 to confirm work authorization.

This job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.