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Senior Software Engineers Jobs in Washington (NOW HIRING)

Senior Software Engineer

Reston, VA

$127K - $168K/yr

The Senior Software Engineer shall perform with a high degree of independence and expertise to ... and test engineers ensure high quality software products through deliberative design ...

Senior Software Engineer

Reston, VA · On-site

$100 - $130/hr

The Senior Software Engineer shall perform with a high degree of independence and expertise to ... and test engineers * ensure high quality software products through deliberative design ...

Senior Software Engineer

Mclean, VA · On-site

$102.20 - $189.80/hr

Senior Software Engineer** to support our DoD/DoW customers ... Software Engineers supporting these efforts work alongside data scientists and data engineers to ...

Senior Software Engineer

Reston, VA · On-site

$127K - $168K/yr

The Senior Software Engineer shall perform with a high degree of independence and expertise to ... test engineers • ensure high quality software products through deliberative design ...

Senior Software Engineer

Mclean, VA · On-site

$123K - $163K/yr

Software Engineers supporting these efforts work alongside data scientists and data engineers to ... As a Senior Software Engineer , you will also contribute to a variety of areas including: * Leading ...

Senior Software Engineer

Mclean, VA · On-site +1

$123K - $163K/yr

Software Engineers supporting these efforts work alongside data scientists and data engineers to ... As a Senior Software Engineer , you will also contribute to a variety of areas including: * Leading ...

Senior Software Engineer

Washington, DC · On-site

$142.33 - $234.85/hr

PEMCCO is seeking a Senior Software Engineer to provide technical leadership in the design ... Coordinate with engineers, system administrators, analysts, cybersecurity personnel, and ...

Senior Software Engineer

Washington, DC · On-site

$68.43 - $112.91/hr

PEMCCO is seeking a Senior Software Engineer to provide technical leadership in the design ... Coordinate with engineers, system administrators, analysts, cybersecurity personnel, and ...

Senior Software Engineer

Washington, DC · On-site

$68.43 - $112.91/hr

PEMCCO is seeking a Senior Software Engineer to provide technical leadership in the design ... Coordinate with engineers, system administrators, analysts, cybersecurity personnel, and ...

Senior Software Engineer

Washington, DC · On-site

$68.43 - $112.91/hr

PEMCCO is seeking a Senior Software Engineer to provide technical leadership in the design ... Coordinate with engineers, system administrators, analysts, cybersecurity personnel, and ...

Senior Software Engineer

Reston, VA · On-site

$127K - $168K/yr

... test engineers • ensure high quality software products through deliberative design ... senior software engineering roles • Minimum 8 years of experience with Unix internals; Java or

PEMCCO is seeking a Senior Software Engineer to provide technical leadership in the design ... Coordinate with engineers, system administrators, analysts, cybersecurity personnel, and ...

The Senior Software Engineer will design, develop, test, integrate, and maintain scalable, highly ... Collaborate with systems engineers and hardware engineers to derive software requirements and ...

The Senior Software Engineer will design, develop, test, integrate, and maintain scalable, highly ... Collaborate with systems engineers and hardware engineers to derive software requirements and ...

Senior Software Engineer with Secret

Arlington, VA · On-site

$140K - $185K/yr

Share this job: Share: Share Senior Software Engineer with Secret with Facebook Share Senior Software Engineer with Secret with LinkedIn Share Senior Software Engineer with Secret with Twitter ...

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Showing results 1-20

Senior Software Engineers information

What is the difference between Senior Software Engineers vs Software Developers?

AspectSenior Software EngineersSoftware Developers
Required CredentialsBachelor's degree in CS or related field; experience often 5+ yearsBachelor's degree in CS or related field; experience varies, often less than 5 years
Work EnvironmentDesigning complex systems, leading projects, mentoringWriting code, developing features, fixing bugs
Employer & Industry UsageTech companies, startups, enterprise firmsWide range of industries, including tech, finance, healthcare
Common Search & ComparisonOften compared for experience level and responsibilitiesMore entry to mid-level roles, less leadership focus

Senior Software Engineers typically have more experience, take on leadership roles, and handle complex system design, whereas Software Developers focus on coding and feature development. The two roles often overlap but differ mainly in responsibility level and scope of work.

What are the most commonly searched types of Software Engineers jobs in Washington? The most popular types of Software Engineers jobs in Washington are:
What cities in Washington are hiring for Senior Software Engineers jobs? Cities in Washington with the most Senior Software Engineers job openings:
Infographic showing various Senior Software Engineers job openings in Washington as of August 2026, with employment types broken down into 88% Full Time, 8% Part Time, and 4% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution.

Software Engineer (Senior) - TS/SCI with Polygraph Required

Catalyst Operations & Analytics

Vienna, VA • On-site

Full-time

Posted 12 days ago


Job description

Salary: $170,000 - $210,000

Position Summary

Senior Software Engineers lead the design, development, and delivery of complex software systems in support of the customer's requirements. Senior Software Engineers take ownership of significant portions of the software development lifecycle from requirements analysis and design through coding, integration, and testing while operating within Agile development teams. Senior Software Engineers apply sound engineering judgment to resolve difficult technical problems, evaluate design trade-offs, and help ensure delivered systems meet performance, security, and reliability standards. Senior Software Engineers are expected to review the work of less experienced engineers and provide technical mentorship


Requirements

US Citizenships and TS/SCI with Polygraph (no exceptions)


Education/Experience Requirements:

  • Bachelor's degree and 7-11 years of relevant professional software engineering experience (Master's degree and 5-9 years also acceptable); additional relevant experience may be considered in lieu of a degree


Required Skills:

  • Strong proficiency in one or more modern programming languages (e.g., Java, Python, C/C++, JavaScript)
  • Demonstrated experience across the full software development lifecycle (SDLC), including requirements analysis, design, coding, integration, testing, and deployment
  • Experience working within Agile/Scrum development teams and ceremonies
  • Experience with version control and configuration management tools
  • Experience developing on Windows and/or Linux operating systems
  • Experience with DevOps practices, CI/CD pipelines, and test automation
  • Demonstrated ability to evaluate software architecture and technical trade-offs
  • Strong critical thinking, technical writing, and oral communication skills, including the ability to present technical solutions to customers
  • Senior positions review and guide the work of Junior and Mid-Level engineers