Senior Software Developer
$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 ...
$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 ...
$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 ...
Arlington, VA · On-site
$100K - $180K/yr
JRAD is seeking candidates for a Senior Software Developer position responsible for leading the design, development, and delivery of complex software solutions. This role involves providing technical ...
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Arlington, VA · On-site
$100K - $180K/yr
JRAD is seeking candidates for a Senior Software Developer position responsible for leading the design, development, and delivery of complex software solutions. This role involves providing technical ...
Herndon, VA · On-site
$56 - $74/hr
Senior Software Developer, TS/SCI with Full Scope Polygraph Required, Herndon, VA The Senior Software Developer must have an active TS/SCI with Full Scope Polygraph security clearance. Military (Air ...
Herndon, VA · On-site
$56 - $74/hr
Senior Software Developer, TS/SCI with Full Scope Polygraph Required, Herndon, VA The Senior Software Developer must have an active TS/SCI with Full Scope Polygraph security clearance. Military (Air ...
Mclean, VA · On-site
$55.25 - $73/hr
VT Group (VTG) is seeking a Sr. Software Developer with a minimum of 10 years' experience to support the full lifecycle development of innovative web, video, and multimedia training products. The ...
Mclean, VA · On-site
$55.25 - $73/hr
VT Group (VTG) is seeking a Sr. Software Developer with a minimum of 10 years' experience to support the full lifecycle development of innovative web, video, and multimedia training products. The ...
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 ...
Herndon, VA · On-site
$56 - $74/hr
Overview We are seeking a versatile Senior Software Developer with expertise in secure software engineering. The ideal candidate will combine technical proficiency in development tools and ...
Herndon, VA · On-site
$56 - $74/hr
Overview We are seeking a versatile Senior Software Developer with expertise in secure software engineering. The ideal candidate will combine technical proficiency in development tools and ...
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 ...
$54.75 - $72.25/hr
Senior Software Developer Location: Vienna, VA Clearance Required: Public Trust Employment Type: Full-Time/Exempt Syneren is looking for a Senior Software Developer to join our team. We are looking ...
$54.75 - $72.25/hr
Senior Software Developer Location: Vienna, VA Clearance Required: Public Trust Employment Type: Full-Time/Exempt Syneren is looking for a Senior Software Developer to join our team. We are looking ...
Chantilly, VA · On-site
$56.25 - $74.50/hr
We're seeking a Senior Software Developer to join our team in Chantilly, VA , where you'll design, develop, and enhance enterprise Java applications in a collaborative Agile environment. If you're ...
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Chantilly, VA · On-site
$56.25 - $74.50/hr
We're seeking a Senior Software Developer to join our team in Chantilly, VA , where you'll design, develop, and enhance enterprise Java applications in a collaborative Agile environment. If you're ...
Herndon, VA · On-site
$56 - $74/hr
VT Group (VTG) is seeking a versatile Senior Software Developer with expertise in secure software engineering. The ideal candidate will work in an agile environment, collaborating with cross ...
Herndon, VA · On-site
$56 - $74/hr
VT Group (VTG) is seeking a versatile Senior Software Developer with expertise in secure software engineering. The ideal candidate will work in an agile environment, collaborating with cross ...
Tysons, VA · On-site
$55 - $72.75/hr
Senior Software Developer Location: Tysons, VA (Onsite) Clearance: TS/SCI with Full Scope Polygraph Rate: Open Are You a Senior Software Developer Ready to Build Interactive, Cloud-Based Training ...
Tysons, VA · On-site
$55 - $72.75/hr
Senior Software Developer Location: Tysons, VA (Onsite) Clearance: TS/SCI with Full Scope Polygraph Rate: Open Are You a Senior Software Developer Ready to Build Interactive, Cloud-Based Training ...
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 ...
Arlington, VA · On-site
$62.75 - $83/hr
To support this mission, we are seeking a Senior Software Developer to lead the evolution of the DOJ National Classified Services (NCS) application stack. In this role, you won't just write code; you ...
Arlington, VA · On-site
$62.75 - $83/hr
To support this mission, we are seeking a Senior Software Developer to lead the evolution of the DOJ National Classified Services (NCS) application stack. In this role, you won't just write code; you ...
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 ...
Washington, DC · On-site +1
$147K - $198K/yr
Wilson Sonsini is seeking an experienced Senior Software Developer to join our Innovations team. The software developers on our team are the primary contributors to Neuron on both the frontend and ...
Washington, DC · On-site +1
$147K - $198K/yr
Wilson Sonsini is seeking an experienced Senior Software Developer to join our Innovations team. The software developers on our team are the primary contributors to Neuron on both the frontend and ...
Arlington, VA · On-site
$160K - $170K/yr
To support this mission, we are seeking a Senior Software Developer to lead the evolution of the DOJ National Classified Services (NCS) application stack. In this role, you won't just write code; you ...
Arlington, VA · On-site
$160K - $170K/yr
To support this mission, we are seeking a Senior Software Developer to lead the evolution of the DOJ National Classified Services (NCS) application stack. In this role, you won't just write code; you ...
$160K - $170K/yr
To support this mission, we are seeking a Senior Software Developer to lead the evolution of the DOJ National Classified Services (NCS) application stack. In this role, you won't just write code; you ...
Quick apply
$160K - $170K/yr
To support this mission, we are seeking a Senior Software Developer to lead the evolution of the DOJ National Classified Services (NCS) application stack. In this role, you won't just write code; you ...
Arlington, VA · On-site
$160K - $170K/yr
To support this mission, we are seeking a Senior Software Developer to lead the evolution of the DOJ National Classified Services (NCS) application stack. In this role, you won't just write code; you ...
Arlington, VA · On-site
$160K - $170K/yr
To support this mission, we are seeking a Senior Software Developer to lead the evolution of the DOJ National Classified Services (NCS) application stack. In this role, you won't just write code; you ...
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 ...
$15.91 - $22.72
0% of jobs
$22.72 - $29.52
0% of jobs
$29.52 - $36.32
0% of jobs
$36.32 - $43.12
3% of jobs
$43.12 - $49.93
7% of jobs
$54.52 is the 25th percentile. Wages below this are outliers.
$49.93 - $56.73
21% of jobs
The median wage is $61.99 / hr.
$56.73 - $63.53
23% of jobs
$70.16 is the 75th percentile. Wages above this are outliers.
$63.53 - $70.34
20% of jobs
$70.34 - $77.14
13% of jobs
$77.14 - $83.94
7% of jobs
$83.94 - $90.75
4% of jobs
$15
$63
$90
| 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 2 days ago
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.
·
Preferred 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.