Senior Systems Integration Engineer

This full‑time position is onsite at a secure facility in Sterling, VA and requires an active U.S. national security (TS/SCI) clearance.

About the role

Lyntris is a defense technology company that connects sensing to action across the connected battlespace. The Senior Systems Integration Engineer is a strategic, hands‑on technical leader responsible for integrating, testing, and advancing complex DoD software systems, particularly for the Beyond Line of Sight (BLOS) Engagement Controller and Manager (BECM) program.

Responsibilities

• System Integration & Test: Integrate and test software subsystems and external systems; write and maintain SWIT and SIT test threads, cases, and steps; participate in integration events with external owners and government stakeholders; triage integration defects and drive closure.
• Test Tooling & Automation: Build and maintain simulators, stubs, message injectors, data generators, log analyzers, and reporting tools; develop automated test suites and keep them current; extend regression coverage in CI/CD pipelines; produce consistent test reporting and evidence artifacts.
• Reusable Engineering: Package tooling and test assets as versioned, documented components; identify and consolidate duplicated effort; contribute to conventions for interface documentation, test structure, and environment configuration.
• Infrastructure & DevSecOps: Use container technologies to configure and deploy software to lab, integration, and customer environments; build and maintain automation pipelines, artifact management, and environment provisioning (including disconnected and classified enclaves); embed security and compliance controls within pipelines.
• Collaboration & Documentation: Work with cross‑functional teams to define, design, and implement new software and verification approaches; write and maintain integration, test, and deployment documentation; mentor less‑experienced engineers; stay current with software integration, test engineering, and secure delivery practices.

Required Qualifications

• STEM degree with ≥5 years relevant experience, or advanced degree with ≥3 years experience.
• Hands‑on experience integrating and testing software across subsystem or external system boundaries.
• Experience building test automation, harnesses, or utilities.
• Experience in secure or regulated software environments.
• Experience working in cross‑functional software development teams.
• Working knowledge of at least one major public cloud provider (AWS or GCP preferred).
• Experience with container and orchestration technologies (e.g., Kubernetes, Docker, Podman, Helm, ArgoCD, Flux).
• Proficiency with Python, Pytest, Linux shell scripting (grep, awk, sed, ssh, scp), and pipeline tools such as GitLab and Artifactory.
• Experience creating test threads, cases, and steps for SWIT and/or SIT.
• Active, transferable TS/SCI clearance required prior to start date.
• U.S. citizenship.

Preferred Qualifications

• Experience testing distributed, real‑time, or message‑driven systems where timing and ordering matter.
• Experience building interface simulators or emulators for systems unavailable in the lab.
• Familiarity with test reporting standards (JUnit XML, CTRF, Allure) and behavior‑driven formats (Gherkin, Cucumber).
• Experience with data integration and streaming technologies (NiFi, Kafka, REST APIs).
• Mentoring engineers or leading small technical efforts.
• Experience with documentation tools like Swagger and modeling tools like Cameo.
• AWS Certified Solutions Architect – Associate.
• Certified Kubernetes Administrator.
• DoD IAT Level II security certification (Security+ CE, GSEC, SSCP, or CCNA Security).

Physical Requirements

Prolonged periods sitting at a desk and working on a computer; ability to lift up to 15 lb. The role requires on‑site presence five days per week at a secure controlled‑information facility.

Pay

USD 140,200 – 185,700 per year (Sterling, VA).

Benefits

• Paid Time Off
• Paid Company Holidays
• Medical, Dental & Vision Insurance
• Optional HSA and FSA
• Base and Voluntary Life Insurance
• Short‑Term & Long‑Term Disability Insurance
• 401(k) Matching
• Employee Assistance Program