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Salary
$120k – $200k per year
Location
In office (Annapolis Junction)
Seniority
Senior · 10+ years exp

Confirmed on the employer's own hiring board on Oct 9, 2026. First seen by Alion on Oct 9, 2026.

Overview
Company
Impact
Profile match
Markon Solutions is a government services contractor headquartered in Falls Church, Virginia, supporting the intelligence community, defense agencies and federal civilian customers with cyber, digital transformation, engineering and facilities management work. A repeated Washington Post Top Workplace, it staffs programs at Fort Meade, Annapolis Junction, Chantilly, McLean and Herndon, and supports naval nuclear work in West Mifflin and Niskayuna. Hiring covers software developers, systems and network engineers, data scientists, target analysts, civil, structural and electrical engineers, facility managers, space auditors and accountants.

Description

PLEX Solutions, A Part of Markon is looking for Sr. Software Developer, Software Systems, to support a contract in the Annapolis Junction, MD area.

Responsibilities

· Providing embedded operations support, capability integration, and rapid prototyping in support of our customer.

· Collaborating with headquarters and local customers to develop and integrate cutting-edge CNO tools.

· Doing independent research into software and device vulnerabilities.

· Documenting and presenting findings.

· Developing software prototype demonstrations.

Qualifications

  • Active TS/SCI w/ Polygraph
  • Bachelor's degree from an accredited college or university a related discipline
  • A minimum of 10+ years of experience. (OR) Additional experience will be considered in lieu of a degree (OR) Master's degree and 7+ years of experience.
  • C/C++, Python experience

  • Assembly experience (any platform/processor)

Desired Qualifications:

  • Software Development, Reverse Engineering, Vulnerability Analysis
  • Cyber Security, AI/ML, cloud computing, full-stack development
  • Languages: C/C++, Java, Python, scripting languages, Assembly
  • Platforms: Linux, Windows, Mobile
  • Assembly: x86, ARM, MIPS
  • CySA+, or GICSP, or GSEC, or SSCP (DoD 8570/8140 IAT level II certification)

Salary Range

USD $120,000.00 - USD $200,000.00 /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.

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.

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