Senior Software Developer
$195K - $220K/yr
Description PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software ...
$195K - $220K/yr
Description PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software ...
$195K - $220K/yr
Description PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software ...
Annapolis Junction, MD · On-site
$195K - $220K/yr
Description PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software ...
Annapolis Junction, MD · On-site
$195K - $220K/yr
Description PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software ...
Annapolis Junction, MD · On-site
$195K - $220K/yr
PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software engineering efforts ...
Annapolis Junction, MD · On-site
$195K - $220K/yr
PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software engineering efforts ...
AGE Solutions is seeking a Senior Software Developer/Engineer to develop, maintain, and enhance custom PKI/PKE tools and applications. This position requires expertise in multiple programming ...
AGE Solutions is seeking a Senior Software Developer/Engineer to develop, maintain, and enhance custom PKI/PKE tools and applications. This position requires expertise in multiple programming ...
Bethesda, MD · Hybrid
$90K - $130K/yr
Description Spatial Front, Inc. (SFI), a two-time USAToday Top Workplaces awardee and Washington Top Workplaces honoree, is seeking a Senior Software Developer to support our growing team. In this ...
Bethesda, MD · Hybrid
$90K - $130K/yr
Description Spatial Front, Inc. (SFI), a two-time USAToday Top Workplaces awardee and Washington Top Workplaces honoree, is seeking a Senior Software Developer to support our growing team. In this ...
Bethesda, MD · On-site
$90K - $130K/yr
Job Type Full-time Description Spatial Front, Inc. (SFI), a two-time USAToday Top Workplaces awardee and Washington Top Workplaces honoree, is seeking a Senior Software Developer to support our ...
Bethesda, MD · On-site
$90K - $130K/yr
Job Type Full-time Description Spatial Front, Inc. (SFI), a two-time USAToday Top Workplaces awardee and Washington Top Workplaces honoree, is seeking a Senior Software Developer to support our ...
Annapolis Junction, MD · On-site
$55.75 - $73.50/hr
They are seeking a Senior Software Developer to support the RECON team by designing and delivering mission-critical systems, working across multiple product teams to enhance infrastructure and ...
Annapolis Junction, MD · On-site
$55.75 - $73.50/hr
They are seeking a Senior Software Developer to support the RECON team by designing and delivering mission-critical systems, working across multiple product teams to enhance infrastructure and ...
$87K - $157K/yr
Leidos is seeking a Sr. Software Development Engineer who will be a member of a dynamic team working on the Federal Aviation Administration's En-Route Automation Modernization ERAM) system, which is ...
$87K - $157K/yr
Leidos is seeking a Sr. Software Development Engineer who will be a member of a dynamic team working on the Federal Aviation Administration's En-Route Automation Modernization ERAM) system, which is ...
Gaithersburg, MD · On-site
$87K - $157K/yr
Leidos is seeking a Sr. Software Development Engineer who will be a member of a dynamic team working on the Federal Aviation Administration's En-Route Automation Modernization ERAM) system, which is ...
Gaithersburg, MD · On-site
$87K - $157K/yr
Leidos is seeking a Sr. Software Development Engineer who will be a member of a dynamic team working on the Federal Aviation Administration's En-Route Automation Modernization ERAM) system, which is ...
Aberdeen, MD · On-site
$58.50 - $77.50/hr
Parsons is seeking a Senior Software Developer to support our cutting-edge Drone Armor counter-unmanned aerial systems (C-UAS) program. The Senior Developer will design and implement logical ...
Aberdeen, MD · On-site
$58.50 - $77.50/hr
Parsons is seeking a Senior Software Developer to support our cutting-edge Drone Armor counter-unmanned aerial systems (C-UAS) program. The Senior Developer will design and implement logical ...
Aberdeen, MD · On-site
$58.50 - $77.50/hr
Parsons is seeking a Senior Software Developer to support our cutting-edge Drone Armor counter-unmanned aerial systems (C-UAS) program. The Senior Developer will design and implement logical ...
Aberdeen, MD · On-site
$58.50 - $77.50/hr
Parsons is seeking a Senior Software Developer to support our cutting-edge Drone Armor counter-unmanned aerial systems (C-UAS) program. The Senior Developer will design and implement logical ...
Bethesda, MD · On-site
$58.25 - $76.75/hr
Avid Technology Professionals is seeking a Senior Software Developer to join their team. The role involves working autonomously on various aspects of software development while adhering to Agile ...
Bethesda, MD · On-site
$58.25 - $76.75/hr
Avid Technology Professionals is seeking a Senior Software Developer to join their team. The role involves working autonomously on various aspects of software development while adhering to Agile ...
Aberdeen, MD · On-site
$58.50 - $77.50/hr
Parsons is seeking a Senior Software Developer to support our cutting-edge Drone Armor counter-unmanned aerial systems (C-UAS) program. The Senior Developer will design and implement logical ...
Aberdeen, MD · On-site
$58.50 - $77.50/hr
Parsons is seeking a Senior Software Developer to support our cutting-edge Drone Armor counter-unmanned aerial systems (C-UAS) program. The Senior Developer will design and implement logical ...
Aberdeen, MD · On-site
$58.50 - $77.50/hr
Parsons is seeking a Senior Software Developer to support our cutting-edge Drone Armor counter-unmanned aerial systems (C-UAS) program. The Senior Developer will design and implement logical ...
Aberdeen, MD · On-site
$58.50 - $77.50/hr
Parsons is seeking a Senior Software Developer to support our cutting-edge Drone Armor counter-unmanned aerial systems (C-UAS) program. The Senior Developer will design and implement logical ...
Fort George G Meade, MD · On-site
$86K - $198K/yr
R0226321 Software Developer, Senior The Opportunity: As a full-stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the ...
New
Fort George G Meade, MD · On-site
$86K - $198K/yr
R0226321 Software Developer, Senior The Opportunity: As a full-stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the ...
New
Columbia, MD · On-site
$172K - $305K/yr
Annapolis Junction, MD Senior Software DevOps Developer Location: Columbia, MD Clearance Required: Active TS/SCI with Polygraph (must be within 7 years) Telework: Up to 16 hours per week ...
Columbia, MD · On-site
$172K - $305K/yr
Annapolis Junction, MD Senior Software DevOps Developer Location: Columbia, MD Clearance Required: Active TS/SCI with Polygraph (must be within 7 years) Telework: Up to 16 hours per week ...
Gaithersburg, MD · On-site
$107K - $195K/yr
Leidos is seeking Senior Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems.
Gaithersburg, MD · On-site
$107K - $195K/yr
Leidos is seeking Senior Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems.
$107K - $195K/yr
Leidos is seeking Senior Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems.
$107K - $195K/yr
Leidos is seeking Senior Software Developers to join the Air Traffic Business Area within the Homeland Sector, supporting the development of next-generation flight service and air traffic systems.
Annapolis, MD · On-site
$172K - $305K/yr
Senior Software DevOps Developer Location: Columbia, MD Clearance Required: Active TS/SCI with Polygraph (must be within 7 years) Telework: Up to 16 hours per week (taskdependent) About the Role We ...
Annapolis, MD · On-site
$172K - $305K/yr
Senior Software DevOps Developer Location: Columbia, MD Clearance Required: Active TS/SCI with Polygraph (must be within 7 years) Telework: Up to 16 hours per week (taskdependent) About the Role We ...
Columbia, MD · On-site
$146K/yr
Active TS/SCI with CI Polygraph Required Position Overview Endictus is seeking a Senior Software Developer (Systems Software) to support mission-critical national security programs at Fort Meade. In ...
Columbia, MD · On-site
$146K/yr
Active TS/SCI with CI Polygraph Required Position Overview Endictus is seeking a Senior Software Developer (Systems Software) to support mission-critical national security programs at Fort Meade. In ...
$14.93 - $21.32
0% of jobs
$21.32 - $27.70
0% of jobs
$27.70 - $34.08
0% of jobs
$34.08 - $40.47
3% of jobs
$40.47 - $46.85
7% of jobs
$51.16 is the 25th percentile. Wages below this are outliers.
$46.85 - $53.24
21% of jobs
The median wage is $58.17 / hr.
$53.24 - $59.62
23% of jobs
$65.84 is the 75th percentile. Wages above this are outliers.
$59.62 - $66
20% of jobs
$66 - $72.39
13% of jobs
$72.39 - $78.77
7% of jobs
$78.77 - $85.16
4% of jobs
$14
$59
$85
| Aspect | Senior Software Developer | Software Engineer |
|---|---|---|
| Credentials | Bachelor's degree in CS or related field; experience often 5+ years | Bachelor's or higher in CS or related field; similar experience levels |
| Work Environment | Collaborates on complex projects, mentors juniors, leads technical efforts | Designs, develops, tests software; may work on specific modules or systems |
| Industry Usage | Commonly used in tech companies, startups, and enterprise firms | Widely used across industries, often interchangeable with developer roles |
The main difference is that Senior Software Developers typically have more experience, leadership responsibilities, and focus on complex project oversight, while Software Engineers may focus more on designing and implementing software solutions. Both roles require similar credentials and are integral in software development teams, but Senior Software Developers often take on mentorship and strategic tasks.

$195K - $220K/yr
Full-time
Medical, Dental, Vision, Life, Retirement, PTO
Re-posted yesterday
PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software engineering efforts, apply advanced technical principles, and contribute innovative solutions that support critical hardware and technical service products.
ResponsibilitiesPreferred Qualifications:
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.
Employment Type: FULL_TIME