Senior Software Engineer Jobs

STR

Location:
United States, Arlington

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

134000.00 - 184000.00 USD / Year

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Job Description:

STR is hiring experienced Senior Software Engineers to join our multidisciplinary cyber/networking team committed to developing cutting-edge technologies that have an immediate and significant impact on our national security. Our team innovates communications technology across all networking layers, from the physical to the application layer. We value diverse skills, experiences, and perspectives, which are vital to delivering innovative solutions to our customers. If you have a strong track record of delivering impactful software solutions and meet the qualifications below, we encourage you to apply!

Job Responsibility:

Collaborate closely with a small, dedicated research team to develop innovative solutions to complex problems
Take ownership of significant features or components of projects and deliver them with minimal supervision
Lead technical discussions, guide architectural decisions, and mentor junior engineers
Develop and test novel software solutions spanning research, development, and deployed production systems
Analyze and improve existing designs and processes to optimize performance
Deliver high-quality software in a rapid-paced, research-focused team environment
Develop operational prototypes for experimentation and performance analysis
Create customer-facing operational systems, ensuring they meet high reliability and usability standards

Requirements:

Ability to obtain a Top Secret (TS) security clearance (U.S. citizenship required)
5+ years of experience in relevant software engineering roles
Proficient in Python, C, C++, or similar interpreted or low-level programming languages
Experienced with designing and implementing open architectures and rapid prototyping methodologies
Strong working knowledge of software testing, evaluation best practices, and industry-standard development lifecycles
Significant hands-on experience developing software with GNU/Linux toolchains using open-source software
Deep understanding of networking principles, including the 5-layer OSI networking stack
Strong team player with excellent communication skills, both verbal and written
Bachelor's (or higher) degree in Computer Science, Electrical & Computer Engineering, Applied Mathematics, or a related field, with at least 5 years of relevant experience or equivalent expertise

Nice to have:

Active Top Secret (TS) Security Clearance
Advanced experience in Python, MATLAB, and/or other high-level programming languages
Proven ability to build, deploy, and maintain production-ready software systems
Experience writing software in a multi-party, large-scale codebase
Demonstrated success managing technical challenges in experimental/laboratory environments, including performing quantitative analysis
Familiarity with multi-threaded or multi-core real-time operating concepts
Knowledge of high-level software architecture design and scalability principles
Demonstrated leadership abilities, including mentoring junior staff and contributing to team efficiency

Additional Information:

Job Posted:
December 12, 2025

Employment Type:

Fulltime

Work Type:

On-site work

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Senior Software Engineer

STR

Location:United States, Arlington

Category:IT - Software Development

Contract Type:Not provided