Senior Systems Engineer & SME - Cloud, Security & Ops

RealmOne; Tysons (VA); Hybrid; USD 110,000 - 170,000; Full time

Job summary

RealmOne is seeking a Systems Engineer - SME to support mission-critical enterprise infrastructure and security operations for a key U.S. Government customer in Tysons, Virginia.

The role requires hands-on expertise across cloud and on‑prem environments and the ability to analyze current systems, design future-state architectures, and implement transformations end-to-end. The ideal candidate will own the reliability, performance, security, and scalability of complex systems, collaborating with

Qualifications

• Bachelor’s degree in computer science or related technical discipline, or equivalent combination of education, certifications, training, and work/military experience.
• Minimum ten years of related systems engineering experience.
• Ability to brief executives and translate technical issues into business impact.
• Experience across infrastructure, platforms, and applications; cloud and on-premises.

Responsibilities

• Perform hands-on systems engineering across network, compute, storage, operating systems, middleware, databases, and applications.
• Analyze and document as-is infrastructure, platform, and application architecture.
• Work with System Architect and Cloud Architect to create detailed engineering designs for modernization and transformations.
• Lead and execute cloud and on-prem system implementations, migrations, and upgrades.
• Ensure systems meet availability, scalability, performance, security, and compliance requirements.
• Integrate infrastructure and platforms with DevOps and DevSecOps pipelines.
• Troubleshoot complex, cross-stack issues spanning infrastructure, platforms, and applications.
• Produce clear technical documentation, diagrams, standards, and runbooks.
• Serve as a technical authority and escalation point for complex system issues.
• Collaborate with: Infrastructure & Platforms Engineers, Software Engineers, DevOps / DevSecOps Engineers, Data Engineers, Data Modelers, Data Scientists, and Data Analysts.
• Communication Skills: brief executives clearly and translate technical issues into business impact; collaborate across internal and DoD teams to implement complex solutions.

Skills

Systems engineering

Hybrid Cloud

DevOps

Documentation

Collaboration

Security architecture

Networking

Data analysis

Education

Bachelor’s degree in computer science or related technical discipline

Job description

RealmOne is seeking a Systems Engineer - SME to support mission-critical enterprise infrastructure and security operations for a key U.S. Government customer in Tysons, Virginia.

The role requires hands-on expertise across cloud and on‑prem environments and the ability to analyze current systems, design future-state architectures, and implement transformations end-to-end. The ideal candidate will own the reliability, performance, security, and scalability of complex systems, collaborating with