Senior Systems Integrator Engineer

Leidos•St. Louis, MO

1d•$107,900 - $195,050

About The Position

Leidos is seeking an experienced Senior Systems Integration Engineer to support the Chinook Program and an Intelligence Community customer. The role provides technical leadership integrating software, hardware, infrastructure, data, interfaces, and mission capabilities into a cohesive operational solution. The engineer works across software engineering, systems engineering, DevSecOps, test engineering, security, architecture, program management, and customer stakeholders to plan, execute, troubleshoot, and validate complex integrations. The position may be performed in Tucson, Arizona; Gaithersburg, Maryland; Alexandria or Chantilly, Virginia; Englewood, Colorado; or St. Louis, Missouri. An active Top Secret/SCI clearance and ability to pass a polygraph examination are required.

Requirements

U.S. citizenship, as required by the contract.
Active Top Secret/SCI clearance and ability to successfully pass a polygraph examination.
Bachelor’s degree in Computer Science, Software Engineering, or a related field with 8–12 years of relevant experience; or a master’s degree with 6–10 years of relevant experience. A doctorate in a technical domain may be held; equivalent experience may be considered in lieu of a degree.
Demonstrated experience with systems integration, software integration, or complex enterprise application environments.
Experience analyzing system interfaces, dependencies, data flows, and integration requirements.
Experience troubleshooting complex technical issues across multiple systems or applications.
Experience with REST APIs, web services, databases, messaging, and distributed systems.
Experience working in Agile/Scrum environments.
Experience with requirements management and technical documentation.
Experience collaborating across software, infrastructure, security, test, and systems engineering teams.

Nice To Haves

Experience supporting Intelligence Community or Department of Defense mission systems.
Experience with geospatial, intelligence, or other mission-specific data and workflows.
Experience with AWS and cloud environments.
Experience with containerization, including Docker and Kubernetes.
Experience with CI/CD and DevSecOps environments.
Experience with Infrastructure-as-Code tools such as Terraform, Ansible, or CloudFormation.
Experience with GitLab CI/CD, Jenkins, SonarQube, Nexus, Vault, or Keycloak.
Experience with PostgreSQL, MySQL, SQL Server, OpenSearch/Elasticsearch, or similar technologies.
Experience with Kafka or other messaging/event-streaming technologies.
Experience with GitLab, Jenkins, Jira, Confluence, or similar tools.
Experience with automated integration testing.
Experience with system-of-systems integration.

Responsibilities

Lead integration activities across applications, infrastructure, data, networks, security, and mission-system components.
Develop and maintain system integration strategies, plans, procedures, and technical documentation.
Analyze system and software requirements to identify integration dependencies, interfaces, constraints, and risks.
Define and document system interfaces and integration requirements.
Coordinate integration activities across multiple Agile engineering teams.
Lead technical integration working sessions and troubleshoot complex cross-system issues.
Develop integration approaches for APIs, microservices, databases, messaging systems, and external interfaces.
Coordinate environments and technical dependencies required for integration and testing.
Support end-to-end system integration and validation activities.
Partner with Test Engineering to develop integration and end-to-end test strategies.
Investigate defects and integration failures and lead root-cause analysis.
Analyze logs, application behavior, interfaces, data flows, and system configurations to isolate issues.
Coordinate resolution of integration defects across engineering teams.
Support deployment, release, and operational readiness activities.
Evaluate technical impacts associated with application changes, infrastructure changes, and new capabilities.
Identify integration risks and dependencies early and communicate them to engineering and program leadership.
Maintain integration schedules, technical dependencies, and readiness criteria.
Support Agile ceremonies, PI Planning, backlog refinement, sprint planning, and technical demonstrations.
Participate in architecture and technical design reviews.
Provide technical guidance and mentorship to less-experienced systems and integration engineers.
Collaborate with customer and mission stakeholders to understand operational integration requirements.
Support continuous improvement of integration processes, tooling, automation, and engineering practices.