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64 System One Senior Software Engineer Jobs Hiring Near You

Proven Software

$140K - $170K/yr

Join Proven as a Senior Software Engineer and experience the thrill of working in a dynamic, fully ... You will play a crucial role in ensuring the delivery of robust, scalable, and efficient systems ...

ETAP Software

Senior Software Engineer

Irvine, CA · On-site

$129K - $171K/yr

They are seeking a Senior Software Engineer to maintain and enhance software that supports state ... Responsibilities : • Implement and maintain system engines used for electrical state estimation ...

TAP Engineering

Senior Software Engineer

Washington, DC · On-site

$170K - $230K/yr

Senior Software Engineer Software | Washington, DC | Full Time Position: Senior Software Engineer ... Candidates with a background in embedded systems are encouraged to apply, though it is not a strict ...

ShortList Recruitment Limited

$121K - $159K/yr

I will be prioritising individuals who live within 1 hour of central Richmond Key Responsibilities for the Senior Software Engineer role \n \n * Design and build scalable front and back\-end features ...

Source Code

RQ11141 - Sr. Software Developer

Toronto, ON

CA$87.38 - CA$104.86/hr

The Justice Technology Services - Digital Design Branch requires one (1) senior Software Developer with 8+ years of experience for building a modern digital information system and its integration ...

TAP Engineering LLC

Senior Software Engineer

Washington, DC · On-site

$170K - $230K/yr

Senior Software Engineer Software | Washington, DC | Full Time Position: Senior Software Engineer ... Candidates with a background in embedded systems are encouraged to apply, though it is not a strict ...

Full Scope

Senior Software Engineer

Annapolis Junction, MD

$125K - $165K/yr

Senior Software Engineer Location: Annapolis Junction, MD Required Clearance : TS/SCI w/ Full-Scope ... to optimize system performance and functionality. Key Responsibilities: 1. Analyze user ...

SelektIT

Senior Software Engineer

Houston, TX · On-site

$117K - $154K/yr

Write and maintain technical documentation for software systems and processes * Work closely with ... Senior Software Engineer looking for a new challenge, we would love to hear from you. Apply now to ...

Source Code

RQ11139 - Sr. Software Developer

Toronto, ON

CA$87.38 - CA$104.86/hr

The Justice Technology Services - Digital Design Branch requires one (1) senior Software Developer with 8+ years of experience for building a modern digital information system and its integration ...

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System One Jobs Information

What is it like to work at System One?

System One is a professional services company that values collaboration, innovation, and a client-centric approach, fostering a dynamic and supportive work environment.

The company's team structure is designed to facilitate knowledge sharing and expertise exchange, with a flat organizational hierarchy that encourages open communication and cross-functional collaboration. System One's mission is to deliver high-quality solutions to its clients through a network of experienced professionals and cutting-edge technologies.

Working at System One may appeal to candidates who are looking for a challenging and rewarding career in a fast-paced, client-driven industry, with opportunities for professional growth and development in a collaborative and dynamic work environment.
What other companies are hiring for Senior Software Engineer jobs?
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Infographic showing various Senior Software Engineer job openings at System One in the United States as of June 2026, with employment types broken down into 1% As Needed, 42% Full Time, 1% Part Time, 1% Temporary, 54% Contract, and 1% Nights. Highlights an 83% Physical, and 17% Remote job distribution.
Senior Mission Systems Software Engineer (C++/C#/Rust)

Senior Mission Systems Software Engineer (C++/C#/Rust)

System One

White Settlement, TX • On-site

Contractor

Medical, Dental, Vision, Life, Retirement

Posted 12 days ago

Key responsibilities

  • Define and implement architectures for automated systems and big-data ecosystems.

  • Develop automated data pipelines and perform data transformation, aggregation, and anomaly detection.

  • Integrate AI/ML models into operational data flows.

Job description

Job Title: Senior Mission Systems Software Engineer (C++/C#/Rust) Location: Fort Worth, Texas Type: Contract To Hire Contractor Work Model: Onsite Hours: 40 hours per week Security Clearance: Active Secret required We are seeking a Senior Software Engineer to support advanced mission systems in a secure, high-performance environment. This role is focused on designing and building distributed data architectures, automated pipelines, and AI/ML-enabled capabilities that power real-time sensing, tracking, and decision support. The ideal candidate has hands-on experience developing in C++, C#, or Rust and excels at translating complex system requirements into scalable, production-ready solutions. Responsibilities
  • Define and implement architectures for automated systems and big-data ecosystems
  • Develop automated data pipelines; perform data transformation, aggregation, and anomaly detection
  • Architect and deliver local, distributed, and cloud-based data solutions
  • Translate stakeholder needs into technical architectures, design specifications, and execution plans
  • Design technical standards across software, hardware, tools, and data platforms
  • Implement proof-of-concept prototypes to validate design approaches
  • Participate in design reviews and ensure compliance with engineering standards and cybersecurity controls
  • Integrate AI/ML models into operational data flows
  • Support test planning, system integration, and formal qualification events
Required Qualifications:
  • Bachelor’s degree in Computer Science, Computer Engineering, Systems Engineering, or related STEM field
  • 5+ years of software engineering experience with C# or C++, OR 2+ years of experience with Rust
  • Active Secret clearance
  • U.S. citizenship or U.S. lawful permanent residency with ability to obtain program access
Preferred Qualifications:
  • 5+ years designing and implementing distributed systems (e.g., shared memory, gRPC, sockets, REST)
  • 2+ years working with big-data tools (Hadoop, Iceberg, Impala, Trino) or high-volume data pipelines (S3, SeaweedFS, MinIO)
  • Strong experience with Python and core engineering principles:
  • Object-oriented programming (OOP)
  • Data-oriented design (Rust)
  • APIs, design patterns, clean architecture, and test-driven development
  • Familiarity with airborne sensing and tracking systems (radar, electronic warfare, electro-optical)
System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #M2 #LI-CB5 Ref: #851-Rockville-S1

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