Lead API Gateway Architect (TS/SCI, CI Poly)

Modern Government Solutions; Sterling (VA); On-site; USD 180,000 - 240,000; Full time

Benefits offered by this job

Relocation assistance

Job summary

Modern Government Solutions (MGS) is seeking a Principal Systems Engineer to architect, integrate, and secure API ecosystems supporting national security capabilities. You will lead API gateway design, cloud-native integrations, and enterprise service architectures for secure data exchange across mission environments.

The role requires deep expertise in API platforms, cloud architectures, systems integration, and troubleshooting in complex enterprise environments to support high-impact mission

Qualifications

• Must possess an active DoD TS/SCI security clearance with CI Polygraph.
• Must meet DoD 8140 requirements, including Security+ CE certification.
• Bachelor's degree in Systems Engineering, Computer Science, Computer Engineering, Software Engineering, Information Technology, Electrical Engineering, Mathematics, Physics, or a related field.
• 16+ years of experience designing, integrating, and supporting enterprise systems, cloud architectures, and API-driven solutions within complex mission environments.
• 5+ years of experience implementing and administering API gateway technologies in cloud-based architectures.
• Experience designing secure APIs and enterprise integration solutions utilizing REST, GraphQL, event-driven architectures, message queues, streaming platforms, or ETL pipelines.
• Experience supporting Windows-based platforms, COTS applications, and cloud environments utilizing AWS or Azure.
• Experience developing software, automation, or integration solutions using Java, Python, C#, or similar programming languages, with demonstrated expertise in testing, validation, troubleshooting, root-cause analysis, and technical documentation.

Responsibilities

• Design, implement, and sustain enterprise API gateway solutions and service architectures supporting secure system integration across mission environments.
• Architect and support cloud-based integrations utilizing APIs, message queues, streaming platforms, ETL pipelines, and related technologies.
• Support Windows-based platforms, COTS applications, and cloud-hosted systems within secure enterprise environments.
• Troubleshoot complex application, infrastructure, and integration issues, performing root cause analysis and implementing corrective actions.
• Develop and execute system testing, validation, and performance assessment activities to ensure operational readiness and reliability.
• Collaborate with engineering, cybersecurity, infrastructure, and mission stakeholders to implement technical solutions and architectural improvements in a Scaled Agile Framework environment.
• Participate in Program Increment and Sprint planning, to include t-shirt sizing, story point estimation, and dependency mapping.
• Evaluate emerging technologies and recommend enhancements to API platforms, cloud architectures and infrastructure configurations, and enterprise integration capabilities.
• Create and maintain technical documentation, architecture artifacts, implementation guides, and operational procedures.
• Provide technical leadership and engineering guidance across API platform, cloud, and integration initiatives.

Skills

Active TS/SCI clearance

Security+ CE

Systems engineering

API gateway design

Cloud architecture

Education

Bachelor's degree in a related field

Tools

Broadcom API Gateway

MuleSoft

Apigee

Job description

Modern Government Solutions (MGS) is seeking a Principal Systems Engineer to architect, integrate, and secure API ecosystems supporting national security capabilities. You will lead API gateway design, cloud-native integrations, and enterprise service architectures for secure data exchange across mission environments.

The role requires deep expertise in API platforms, cloud architectures, systems integration, and troubleshooting in complex enterprise environments to support high-impact mission