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Senior Software Developer

Job in Herndon, Fairfax County, Virginia, 22070, USA
Listing for: Two Six Technologies
Full Time position
Listed on 2025-12-02
Job specializations:
  • Software Development
    Software Engineer, C++ Developer, Python, Senior Developer
Job Description & How to Apply Below

At Two Six Technologies, we build, deploy, and implement innovative products that solve the world’s most complex challenges today. Through unrivaled collaboration and unwavering trust, we push the boundaries of what’s possible to empower our team and support our customers in building a safer global future.

Overview of Opportunity

Two Six is looking for a talented Senior Software Developer to join our growing team. In this role you will design, develop, and debug mission critical software source code that meets the needs of our customers. In addition, you will have the opportunity to research and integrate new capabilities into our client application. You will work closely with cross-functional teams to deliver a high-performance system and contribute to the overall architecture of our software solutions.

What you will do:
  • Design, develop, and debug mission critical software applications and services
  • Collaborate with product managers, designers, and other developers to define and deliver features
  • Participate in/lead technical discussions analyzing requirements, design and engineering practices
  • Troubleshoot, debug, and optimize system for performance and scalability
What you will need:
  • Bachelor’s degree in computer science or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience
  • 10+ years of experience in software development
  • Deep understanding of software design and implementation in systems programming languages such as Rust, C, or C++
  • Proficiency with multithreaded and asynchronous programming
  • Proficiency with computer and network security concepts
  • Proficiency with common development tools such as version control (e.g. Git) and issue tracking systems (e.g. JIRA)
  • Demonstrated experience with all major aspects of software development: design, coding, debugging, building, testing, and deploying
  • Outstanding verbal and written communication skills to effectively collaborate with internal and external partners
Nice to haves:
  • Proficiency with the Windows API (Win
    32, WinRT)
  • Proficiency with reverse engineering tools (e.g. IDA, Ghidra) and concepts
  • Proficiency with a broad variety of programming languages
  • Proficiency with assembly languages (e.g. x64)
  • Proficiency with GPU programming (e.g. Direct

    X, OpenGL, Vulkan)
  • Experience with Amazon Web Services
  • Understanding of web accessibility Section 508 Standards
Security Clearance:
  • Active TS/SCI with Polygraph
Equal Opportunity Statement

Two Six Technologies is an Equal Opportunity Employer and does not discriminate in employment opportunities or practices based on race (including traits historically associated with race, such as hair texture, hair type and protective hair styles (e.g., braids, twists, locs and twists)), color, religion, national origin, sex (including pregnancy, childbirth or related medical conditions and lactation), sexual orientation, gender identity or expression, age (40 and over), marital status, disability, genetic information, and protected veteran status or any other characteristic protected by applicable federal, state, or local law.

If you are an individual with a disability and would like to request reasonable workplace accommodation for any part of our employment process, please send an email to  . Information provided will be kept confidential and used only to the extent required to provide needed reasonable accommodations.

Additionally, please be advised that this business uses E-Verify in its hiring practices.

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Position Requirements
10+ Years work experience
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