Software Development Engineer (Multiple Locations) with Security Clearance
Legacy Consulting Services , LLC Jessup
Software Development Engineer (Rust) – TS/SCI Cleared Location: Jessup, MD | Arlington, VA | Herndon, VA
Clearance Required: Active TS/SCI Overview We are seeking a highly skilled Software Development Engineer with strong Rust development experience to support the design and development of a cloud-based platform managing high-assurance device fleets.This role focuses on building secure, scalable backend services that support lifecycle operations including provisioning, configuration, monitoring, and policy enforcement across distributed systems. This is a hands-on engineering role for candidates who thrive in high-performance, security-focused environments and enjoy working at the intersection of cloud infrastructure, distributed systems, and device integration.
Key Responsibilities
Design and develop backend services and APIs in Rust supporting fleet lifecycle operations (provisioning, configuration, monitoring, firmware updates, policy enforcement)Architect and implement secure authentication and authorization frameworks for device-to-cloud communication
Build and scale distributed service components for telemetry ingestion, health monitoring, configuration management, and alerting
Develop highly available and scalable systems for managing large fleets of devices in secure environments
Implement and maintain CI/CD pipelines for automated testing (unit, integration, end-to-end)
Collaborate with cross-functional teams across software, hardware, and systems engineering
Required Qualifications
Active TS/SCI clearance
7+ years of software development experience
Strong experience with Rust application development
Experience building backend services and distributed systems
Deep understanding of networking fundamentals, including: TCP/IP, routing, subnetting
VPN architectures, load balancingDNS and network security controls (firewalls, segmentation, security groups)
Experience designing and implementing secure, scalable cloud-based architectures
Experience with CI/CD pipelines and automated testing frameworks
Preferred Qualifications
Experience with AWS cloud services and infrastructure, including: Networking services and cloud-native architectures
Infrastructure as Code (e.g., AWS CDK)Experience working in high-assurance or classified environments
Familiarity with device-to-cloud or IoT-style architectures
Experience developing compute-optimized and memory-efficient applications
Why Join Us
Work on mission-critical, high-assurance systems
Solve complex challenges in distributed systems and secure cloud environments
Collaborate with a team of top-tier engineers and domain experts
Opportunity to work at the forefront of secure device and cloud integration
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