Sr System Administrator

Techsur Solutions LLC•Reston, VA

10d•Hybrid

About The Position

TechSur Solutions is a digital services company whose mission is to enable digital transformation for our customers to improve quality and efficiency. Based in the DC metropolitan area, TechSur specializes in advanced cloud services, modernization for both IT structures and applications, leveraging Agile development, and Data Analytics. Since we were formed in August of 2016, we have supported multiple impactful and exciting government programs. We are seeking a highly skilled Senior System Administrator with 8+ years of experience supporting enterprise infrastructure across Linux, Azure, and AWS environments. The ideal candidate will have strong expertise in cloud administration, automation, security compliance, identity modernization, and application migration. This role supports mission-critical systems, works closely with security teams on ATO processes, and partners with multiple divisions to deliver secure, scalable, and modern infrastructure solutions.

Requirements

8+ years of experience as a System Administrator or similar role.
Strong hands-on experience with Linux system administration.
Proven experience administering Azure and AWS cloud environments.
Experience with CI/CD and automation tools (GitHub Actions, Terraform, Bash, PowerShell).
Solid understanding of identity and access management, SSO, MFA, and PIV authentication.
Experience with application and database migrations to cloud platforms.
Knowledge of security frameworks, compliance standards, and ATO processes.
Strong documentation and collaboration skills.

Nice To Haves

Azure and/or AWS certifications.
Experience supporting federal or highly regulated environments.
Familiarity with AIOps, monitoring platforms, and cost management tools.
Experience working across large, multi-division organizations.

Responsibilities

Administer and support Linux-based systems in on-premises and cloud environments.
Serve as JIRA and Confluence Administrator, including configuration, user management, workflows, and space administration.
Support STP processes, data transfer tasks, system migrations, and certifications across environments.
Modernize authentication for SFD and WSG applications (55+) using SSO and PIV as MFA.
Develop automation for infrastructure provisioning, application deployments, and tool upgrades using GitHub Actions, Terraform, Bash, and PowerShell.
Automate database refresh processes, including schema and data copy from Production to lower environments.
Implement automation for database password rotation and application redeployment on a regular cadence.
Ensure security and compliance with standards across Azure toolchains and infrastructure.
Lead and support application migrations from on-premises to Azure.
Develop and maintain Data Flow Diagrams (DFDs) and Entity Relationship Diagrams (ERDs).
Demonstrate deep understanding of data relationships, application architecture, and system interactions.
Provide recommendations to improve security posture, monitoring, and observability using AIOps.
Identify opportunities for cost optimization, workload scaling, database performance tuning, and infrastructure efficiency.
Work closely with Security teams on ATO processes and onboarding of new services.
Support and advise teams across various divisions in Azure cloud environments.