> Markdown version of [/jobs/ext/2869332-senior-systems-engineer](https://www.wearedevelopers.com/jobs/ext/2869332-senior-systems-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Engineer - **Company:** Gateway Fiber - **Location:** O'Fallon, MO, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Systems Engineering, Microsoft Azure, Microsoft Online Services, Databases, VMware ESX Servers, Intrusion Detection and Prevention, Windows Servers, Network Architecture, Network Segmentation, Network Administration, Server Administration, Microsoft SharePoint, Virtual Machines, Software Vulnerability Management, Cloud-native Network Functions (CNF), Data Storage Technologies, Computerised Systems, Firewalls (Computer Science), Microsoft InTune, Build Process, Vmware - **Published:** September 12, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=fae5fdc29ddb8ae4 ## About the Role * A capable system and network administrator with practical experience supporting enterprise IT environments. * A self-motivated problem solver who can identify issues, troubleshoot thoughtfully, and follow through to resolution. * Someone who values reliable systems, clean handoffs, and documentation that helps the team work better. * Comfortable working in a fast-moving environment where ownership, judgment, and teamwork matter. * A teammate who jumps in to help, shares knowledge, and looks for practical ways to improve how work gets done., * Microsoft Azure or other cloud certification, or at least 5 years of experience in physical and cloud network and server administration. * Experience administering Microsoft cloud services, including Entra ID, Exchange, SharePoint, Intune, and Security Center. * Experience supporting Microsoft Azure virtual machines, networking, and storage. * Practical knowledge of computer systems, security, network administration, databases, and data storage systems. * Experience with RMM tools such as NinjaOne, Atera, or Intune. * VMware ESXi and vCenter administration experience is a plus. * Experience administering and troubleshooting security technologies such as Cisco Meraki, Arctic Wolf, firewalls, endpoint protection, vulnerability management, and security monitoring platforms. * Understanding of security best practices, including network segmentation, access control, threat detection, incident response, and secure configuration management. ## Description * Administer and support Gateway's Microsoft cloud environment, including Entra ID, Exchange, SharePoint, Intune, and Security Center. * Support Azure virtual machines, networking, and storage resources through routine configuration, monitoring, and troubleshooting. * Help build processes, automation, and tooling to allow Gateway to simplify and scale. * Maintain Windows Server and VMware environments to help keep systems reliable, secure, and well documented. * Monitor systems, respond to alerts and tickets, and resolve infrastructure and end-user issues with urgency and follow-through. * Apply security, access, and operational best practices across systems, applications, networks, and data storage platforms. * Contribute to technical projects, process improvements, and documentation that help the IT team operate consistently and effectively. * Configure, monitor, and maintain security platforms including Cisco Meraki and Arctic Wolf to support a secure, reliable, and compliant enterprise environment. * Assist with security incident response, threat monitoring, vulnerability remediation, and network hardening efforts across cloud, server, and network infrastructure. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Empowering Democratic Processes: Building a Hybrid Voting Platform](https://www.wearedevelopers.com/videos/1163-empowering-democratic-processes-building-a-hybrid-voting-platform) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Reusing apps between teams and environments through Containers](https://www.wearedevelopers.com/videos/107-reusing-apps-between-teams-and-environments-through-containers) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1146-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries)