Demo

Principal Cyber Software Engineer (Mobile)

Markon
Chantilly, VA Full Time
POSTED ON 12/19/2025
AVAILABLE BEFORE 2/19/2026
Principal Cyber Software Engineer (Mobile)
Location US-VA-Chantilly
ID 2025-7945
Category Information Technology Position Type Full-Time Remote No Clearance Level Secret
Overview

Eager to join a team where your skills are valued, your growth is nurtured, and your impact is profound? Look no further than Markon, a premier consulting firm deeply dedicated to advancing our nation's most critical missions.

At Markon, we don't just offer jobs - we offer opportunities for personal and professional transformation. Empowering our employees to lead, innovate, and excel, we foster an environment where new ideas are not just welcomed but celebrated. As a perennial Washington Post Top Workplace, we prioritize the well-being and success of our team members, ensuring they can bring their best selves to work.

Headquartered in Falls Church, Virginia, Markon has garnered national recognition for our unwavering dedication to excellence in serving the intelligence community, as well as federal civilian and defense agencies. Our growing reach extends across 17 states, 116 countries, and 5 continents, where our team of dynamic professionals collaborates to deliver unparalleled program and project management services.

Markon values people and the tremendous impact each individual can make - which is why we're consistently recognized as one of the best places to work in federal government consulting. Here, you can help solve the nation's most important challenges, surrounded by colleagues who help you grow, advance, and succeed. We are deeply dedicated to what matters - bringing out the best in each other to advance our clients' missions.

Join us and make a meaningful impact.

Markon is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, national origin, age, protected veteran status, or disability status. This job posting will remain open until the position is filled.

Benefits Offered: Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Training and Tuition Assistance, Paid Time Off, and Holidays

Description

Markon is hiring a Principal Cyber Software Engineer for our Virginia client out of Chantilly, VA. The ideal professional will have extensive experience supporting, developing, presenting, and defending highly-secure mobile application systems and play a critcial role in shaping the direction and success of the mission.

Responsibilities
    Design, development, and deliver high-quality mobile software on the Android platform.
  • Defend the architecture in rigorous reviews.
  • Effectively communicate ideas to customer leadership.
  • Understand and articulate complex data integration efforts to technical and non-technical professionals.
  • Mentor and lead more junior members of the team with applicable SDLC methodologies.
  • Ensure high fidelity coding in multiple common and uncommon software languages.
  • Maintain knowledge of up-to-date development methodologies, risks, and technologies.
Qualifications

Required:

  • A minimum of an active Secret security clearance to be considered.
    • Willingness to aquire a TS/SCI with a Full Scope (Lifestyle) Polygraph and stay on contract throughout the full investigation and adjudication.
    • Candidates with a secret level of clearance must meet all required and most desired qualifications.
  • Minimum education and experience are 8 years' experience is required:
    • 8 years' experience with Bachelor's in Science.
    • 6 years' experience with Masters in Science.
    • 4 years' experience with PhD.
  • Proficient in C, Rust, Java, Kotlin, C , C#, or Python.
  • Experience developing software on Agile teams.
  • Experience developing applications for mobile platforms.
  • Knowledge of cybersecurity fundamentals.
  • Knowledge of software development life cycle.
  • Experience writing software design documentation.

Desired:

  • Active Top Secret / SCI security clearance with a Full Scope (lifestyle) poly.
  • Experience leading software development teams.
  • Deep knowledge of cryptography best practices.
  • Deep knowledge of Android/Linux system internals.
  • Experience with Android/Linux kernel development or driver development.
  • Experience reverse engineering with Ghidra or IDAPro.
  • Experience designing embedded software systems.
  • Experience developing Flutter applications.
  • Experience managing Linux virtual machines.
  • Experience working with Microsoft Azure DevOps.
Salary Range
USD $170,000.00 - USD $190,000.00 /Yr.

The Markon pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Markon Solutions is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.

 

Salary.com Estimation for Principal Cyber Software Engineer (Mobile) in Chantilly, VA
$115,883 to $140,093
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