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Cyber (CNO) Software Developer

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Onsite

Cyber (CNO) Software Developer

Percival Engineering

Cyber (CNO) Software Developer

Skills

RubyPythonC#Customer Support

1 day ago

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Important information


Contract type:

Permanent

Salary:

$100,000 – $200,000 / year

Location:

Columbia, MD, USA

Work mode:

Onsite

Published on:

22 October 2026

What they need


Ready to dive into and learn the latest cyber strategies and techniques? Are you all about tackling the toughest puzzles? Ready to bring your A-game? Well, buckle up and join us at Percival – where we're all about putting people first and having a blast while we're at it. Based in Columbia, Maryland, our squad is on a big mission: developing top-notch talent and technical solutions to safeguard our nation's most critical assets. From digging deep into vulnerabilities and cracking codes to developing cutting-edge software, our team does it all. If you are a Cyber (CNO) Software Developer with a passion for innovation and a knack for thinking outside the box, we want you on our team. Let's tackle those cyber threats together – and have a blast while we're at it!

Job Type:

  • All Levels, Full Time
  • Non-Remote – Columbia, MD

Clearance & Citizenship Requirements:

  • TS/SCI with polygraph is required
  • Due to these clearance requirements, US citizenship is also required

Responsibilities Include:

  • Provide software development in support of custom software design and development of cyber capability tools and techniques
  • Draft documentation, participate in design, code, and software rediness reviews
  • Write portable code that is compatible with multiple operating systems and architectures (Windows and/or Unix). Should be comfortable writing single and/or multi-threaded applications and inter process communication interfaces.
  • Create new novel solutions and/or integrate new features and maintain existing software solutions supporting computer network operations. Responsible for the entire lifecycle of solutions including design, development, testing, and customer support.
  • Work independently and with small teams, track and report status directly to customer.
  • Write or learn a high-level programming language like Python or Ruby.

Required Skills & Qualifications:                                                               

  • Deep knowledge of operating system internals and development environments
  • C/C++ programming and Python development skills
  • Experience with IPv4 Protocol and Networking
  • BS degree in Computer Science or related field or 4 years of technical work experience
  • Minimum one (1) year experience programming in Assembly, C, C#, C++

Desired Skills & Qualifications:

  • Preferred skills include experience in static and dynamic reverse engineering, vulnerability research, binary analysis of executables, exposure to kernel programming, exposure with assembly languages, and/or ability to analyze and signature network protocols

Application Process:

  • All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, or national origin

Salary Range:

  • The salary range for this role is $100K- $200K depending on experience level and qualifications. This range is a general guideline and not a guarantee of salary, as final compensation may also be influenced by contractual requirements and other considerations.
  • Actual compensation offered to the successful candidate may vary from posted hiring range based upon several factors including, but not limited to, level of position, job responsibilities, geographic location, work experience, education, and/or skill level.

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