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Software Developer Co Op Jobs in Washington (NOW HIRING)

Pioneering Evolution LLC

Junior Full-Stack Developer

Arlington, VA · On-site

$80K - $100K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... software development experience, or equivalent internship/co-op experience. * Experience developing applications using .NET Core / ASP.NET Core. * Familiarity with one or more modern front-end ...

Cummins Inc.

2025 - Summer Intern Co-op Conversion

Largo, MD · On-site

$14.75 - $19.75/hr

This requisition is for 2025 Summer Intern/Co-op Conversion candidates with assignment end dates ... Functional Talent Scouts (function or engineering subfunction), who are CC03 or higher employees ...

Cummins Inc.

2025 - Summer Intern Co-op Conversion

Bowie, MD · On-site

$14.50 - $19.50/hr

This requisition is for 2025 Summer Intern/Co-op Conversion candidates with assignment end dates ... Functional Talent Scouts (function or engineering subfunction), who are CC03 or higher employees ...

Peraton

Software Developer

Linthicum, MD · On-site

$104K - $166K/yr

Responsibilities Peraton is seeking a Software Developer in our Linthicum, MD office in support of our Department of Defense (DoD) customer as part of a highly talented, highly motivated, and high ...

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Showing results 21-40

All JobsSoftware Developer Co Op JobsSoftware Developer Co Op Jobs in Washington

Software Developer Co Op information

See Washington salary details

$54.4K

$126.7K

$188K

How much do software developer co op jobs pay per year?

As of Aug 16, 2026, the average yearly pay for software developer co op in Washington is $126,675.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,900.00 and $147,200.00 per year, depending on experience, location, and employer.

What is the difference between Software Developer Co Op vs Software Engineer Intern?

AspectSoftware Developer Co OpSoftware Engineer Intern
CredentialsTypically enrolled in a computer science or related degree programUsually students in a similar field, often at the undergraduate level
Work EnvironmentPart-time or full-time during academic terms, often in corporate or tech company settingsTemporary position, often during summer, in tech companies or startups
Employer & Industry UsageCommon in tech, software, and IT industries; used by companies to develop talent pipelineCommon in tech and software industries; used for skill development and recruitment

Both roles are internship positions aimed at students gaining practical experience. The main difference lies in terminology and sometimes duration or scope, but both serve as entry points into software development careers.

What are the most commonly searched types of Software Developer jobs in Washington?

The most popular types of Software Developer jobs in Washington are:

What are popular job titles related to Software Developer Co Op jobs in Washington?

For Software Developer Co Op jobs in Washington, the most frequently searched job titles are:

What job categories do people searching Software Developer Co Op jobs in Washington look for?

The top searched job categories for Software Developer Co Op jobs in Washington are:

What cities in Washington are hiring for Software Developer Co Op jobs?

Cities in Washington with the most Software Developer Co Op job openings:

Software Developer Co Op jobs near you
Infographic showing various Software Developer Co Op job openings in Washington as of August 2026, with employment types broken down into 1% Internship, 85% Full Time, 11% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $126,675 per year, or $60.9 per hour.

Junior Full-Stack Developer

Pioneering Evolution LLC

Arlington, VA • On-site

$80K - $100K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 24 days ago

Job description

POSITION DESCRIPTION

Pioneering Evolution is seeking a Junior Full-Stack Developer to support the development and maintenance of secure, mission-critical software solutions for a federal customer. This is an excellent opportunity for an early-career software developer to work alongside experienced engineers in a collaborative Agile environment while building modern web applications. The ideal candidate will be eager to learn, contribute to both backend and frontend development efforts, and grow their technical skills while supporting high-quality software delivery.

Responsibilities:

  • Develop and maintain software features using .NET Core and modern front-end frameworks under the guidance of senior developers.
  • Assist with the development and integration of RESTful APIs.
  • Build and maintain responsive user interfaces that integrate with backend services.
  • Write clean, maintainable, and well-documented code following established coding standards and best practices.
  • Develop unit tests and assist with integration testing to ensure software quality and reliability.
  • Collaborate with software engineers, QA personnel, DevSecOps engineers, UI/UX designers, and other team members throughout the software development lifecycle.
  • Participate in Agile ceremonies including sprint planning, daily stand-ups, backlog refinement, and retrospectives.
  • Troubleshoot software defects and assist with debugging and issue resolution.
  • Document application functionality, technical designs, and implementation details.
  • Support software deployments, application maintenance, and continuous improvement initiatives.
  • Learn and apply secure software development practices appropriate for federal software environments.

REQUIRED EXPERIENCE:

  • Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related technical discipline.
  • 0-3 years of professional software development experience, or equivalent internship/co-op experience.
  • Experience developing applications using .NET Core / ASP.NET Core.
  • Familiarity with one or more modern front-end frameworks such as Angular, React, or Vue.js.
  • Basic understanding of C#, object-oriented programming principles, and software development best practices.
  • Familiarity with RESTful APIs.
  • Basic knowledge of relational databases such as PostgreSQL, SQL Server, or similar database platforms.
  • Familiarity with Git version control.
  • Strong problem-solving, communication, and teamwork skills.
  • Eagerness to learn new technologies and work in a collaborative Agile environment.
  • Must be available to work full-time onsite in the Washington, D.C. metro area.
  • U.S. Citizenship and an active Secret Clearance are required.

DESIRED EXPERIENCE:

  • Internship or academic project experience developing web applications.
  • Familiarity with cloud platforms such as Microsoft Azure or AWS.
  • Exposure to containerization technologies such as Docker or Kubernetes.
  • Basic understanding of DevSecOps concepts and CI/CD pipelines.
  • Interest in secure software development and modern software engineering practices.
  • Experience working on team-based software development projects.

WHO WE ARE AND WHAT WE OFFER:

In addition to competitive salaries and opportunities for professional development and advancement, our employees enjoy a comprehensive range of benefits. To keep pace with the changing needs of our employees, we continually evaluate our benefit plans.

  • Paid time off
  • 10 paid holidays
  • Medical insurance
  • Dental insurance
  • Vision insurance
  • Legal assistance
  • Company-paid life insurance and AD&D
  • Company-paid long-term and short-term disability insurance
  • Tuition reimbursement
  • 401(k) plan with company contribution
  • Continuing Education Opportunities