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Senior Software Development Engineer – Rust / Cloud

Legacy Consulting Services , LLC

Posted today

Job Requirements

Jessup, MD Arlington, VA Herndon, VA Denver, CO
Top Secret/SCI Full Scope Polygraph
Mid Level Career (5+ yrs experience)
Salary not specified
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Job Description

Senior Software Development Engineer – Rust / Cloud Management Platform

Company: LCS Defense
Clearance: Active TS/SCI with Full-Scope Polygraph required
Experience: 5+ years of relevant software engineering experience
Location: Jessup, MD; Arlington, VA; Herndon, VA OR Denver, CO

Position Overview
LCS Defense is seeking a Senior Software Development Engineer to build a cloud-based management platform that orchestrates and coordinates multiple high-assurance network devices.
This role focuses on backend services and APIs developed in Rust. The engineer will build capabilities for device provisioning, configuration, monitoring, firmware updates, and policy enforcement, while supporting secure communication between devices and the cloud.

Key Responsibilities
- Design and develop backend services and APIs in Rust to manage lifecycle operations across a fleet of high-assurance network devices.
- Implement capabilities for device provisioning, configuration, monitoring, firmware updates, and policy enforcement.
- Architect and implement authentication and authorization frameworks for secure device-to-cloud communication.
- Translate cryptographic, security, and key management requirements from government standards into scalable cloud service designs.
- Build highly available, scalable services for telemetry ingestion, health monitoring, configuration distribution, and alerting.
- Develop and maintain CI/CD pipelines that automate unit, integration, and end-to-end testing of cloud-to-device interactions.

Required Qualifications
- Active TS/SCI clearance with Full-Scope Polygraph.
- At least 5 years of relevant software development experience.
- Experience developing backend services and APIs in Rust.
- Experience designing and building cloud-based platforms and distributed services.
- Experience implementing authentication and authorization for secure communications.
- Ability to interpret cryptographic, security, and key management requirements and apply them to cloud service architecture.
- Experience developing highly available, scalable services for distributed systems.
- Experience building CI/CD pipelines and automated unit, integration, and end-to-end tests.
group id: 91164107
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About Us
Legacy Consulting Services, LLC is a small business specializing in Command, Control, Communications, Computers, Cyber, Intelligence, Surveillance and Reconnaissance (C5ISR) services by providing complex cyber security and secure communication solutions. Our capabilities include the requirements analysis, definition design, development, integration and deployment of systems that support national leadership and our warfighters. Established in 2017, LCS supports a variety of customers in the National Capital Region including Aberdeen Proving Grounds, Fort Meade and beyond. Our size is our strength! Given LCS’s small size we can ensure we keep focus on the things that matter the most; our employees, our customers and their families! LCS believes that one of the keys to our success is a balanced work life experience, focused on ensuring that employees can turn their focus to their lives when they leave for the day, and are able to go on vacation without worrying about the office calling.