Top 1405 Software engineer c# Jobs in Washington Dc

AP108 HEASARC Senior Scientific Software Developer
ADNET Systems, Inc. —Greenbelt, MD
- Computer Science
- Bachelor of Science
- Bachelor's degree
- Paid holidays
- Disability insurance
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Backend Software Engineer - AI Trainer
DataAnnotation —Rosslyn, VA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
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Software Engineer - AI Trainer
DataAnnotation —Falls Church, VA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
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TS/SCI Cleared Software Developer - Senior
Amentum —Fort George G Meade, MD
- $145,000 - $153,000 a year
- Full-time
- Software troubleshooting
- Office
- Master's degree
- Health savings account
- Relocation assistance
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AP106 Scientific Software Developer
ADNET Systems, Inc. —Greenbelt, MD
- Mid-level
- 3 years
- Bachelor's degree
- Paid holidays
- Disability insurance
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Application Developer
CGI Group, Inc. —Washington, DC
- $69,700 - $169,700 a year
- Oracle
- Computer Science
- ERP systems
- Paid parental leave
- Paid holidays
Associate Software Developer
Constellation Inc —Washington, DC
- $110,000 - $130,000 a year
- Full-time
- Hybrid work
- Computer Science
- Mid-level
- Bachelor's degree
- Disability insurance
- Health insurance
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7d
Software Engineer (C#/.NET)
CoStar Group —Arlington, VA
- $108,000 - $154,000 a year
- Full-time
- Azure
- System design
- Mid-level
- Employee stock purchase plan
- Health insurance
12d
Senior Software Engineer (C#/.NET)
CoStar Group —Arlington, VA
- $143,000 - $187,000 a year
- Full-time
- Azure
- System design
- Office
- Employee stock purchase plan
- Health insurance
12d
.NET Software Developer
The Hire Group —Washington, DC
- Computer science
- 7 years
- Computer Science
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HP100 Scientific Software Developer
ADNET Systems, Inc. —Greenbelt, MD
- Overtime
- Computer Science
- Java
- Bachelor's degree
- Paid holidays
- Disability insurance
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Software Developer (C# / .NET - Logistics & Industrial Systems)
x2 solutions LLC —Herndon, VA
- $75,000 - $95,000 a year
- Full-time
- Hybrid work
- Computer Science
- Engineering
- System design
- Health insurance
- Dental insurance
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Lead, Software Engineer
L3Harris Technologies —Herndon, VA
- $135,000 - $250,500 a year
- Full-time
- 7 years
- Java
- Presentation skills
- Paid holidays
- Disability insurance
Senior Embedded Firmware Engineer
CMR Clientmind Recruiting —Greenbelt, MD
- Full-time
- Hybrid work
- Mid-level
- Office
- Analysis skills
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3h
CI/CD Pipeline Engineer - AI Trainer
DataAnnotation —Washington, DC
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Real-Time Software Engineer
Leidos —Arlington, VA
- $87,100 - $180,000 a year
- Full-time
- Computer science
- Computer Science
- System design
- Paid holidays
- Paid time off
5G DevOps Engineer
Peraton —College Park, MD
- $104,000 - $166,000 a year
- Full-time
- Bachelor of Science
- System design
- Java
- Health savings account
- Paid holidays
Infrastructure Automation Engineer (US Citizenship REQUIRED)
The Tatitlek Corporation —Washington, DC
- From $130,000 a year
- Full-time
- Background check
- Azure
- Pass drug screening
- Health insurance
- Dental insurance
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Principal Cyber Software Engineer
Northrop Grumman —Jessup, MD
- $119,600 - $187,900 a year
- Overtime
- Computer Science
- Windows
- Java
- Paid holidays
- Disability insurance
Sr. Principal Cyber Software Engineer
Northrop Grumman —Jessup, MD
- $149,300 - $234,600 a year
- Overtime
- Computer science
- Computer Science
- Windows
- Paid holidays
- Disability insurance

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software engineer c# jobs near washington dc

AP108 HEASARC Senior Scientific Software Developer

ADNET Systems, Inc. -
Greenbelt, MD

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Job Details

Benefits

Paid holidays
Disability insurance
Health insurance
Dental insurance
Tuition reimbursement
Vision insurance
401(k) matching

Qualifications

Software engineering
Content creation for technical audiences
Bug Tracking (Quality assurance practices)
Continuous Delivery (CD) implementation
Software coding
Git
Bachelor's degree
Issue tracking
Version control systems
Software documentation
Managing projects
Open source contribution
DevOps automation
Technical writing experience within technology
Providing code feedback

Full Job Description

AP108 HEASARC Senior Scientific Software Developer

The High Energy Astrophysics Science Archive (HEASARC) at NASA's Goddard Space Flight Center (GSFC) seeks a senior scientific software developer with significant experience in developing, maintaining, and managing open source software. Experience with developing or maintaining C and C++ code would be a plus. We maintain a large code base of analysis software called HEASoft written over several decades and using multiple languages from a variety of contributors and developers. We need to modernize the development and management practices we use. As we open source parts of this code, we expect contributions also from the community. We are furthermore developing a plan for modernizing the software itself and will need an experienced developer to be involved in the design as well as implementation of this future code base.

Required Qualifications:

Demonstrated experience developing and maintaining large, long-lived code bases in a collaborative or open source environment
Proficiency in at least one systems-level language (C, C++, Fortran) and at least one scripting language (Python, Perl, or shell)
Experience with modern software development practices: version control with git, code review workflows, CI/CD pipelines, and issue tracking
Experience managing open source projects, including contribution workflows, licensing considerations, and community-facing documentation
Ability to work across a multi-language, multi-contributor code base and improve consistency without requiring full rewrites
Strong written communication skills for technical documentation and contributor-facing guidance
Bachelor of Science degree in Physics, Astronomy, Computer Science or a relevant physical science
US Citizenship or Permanent Residency (LPR) required, with US residency for the past 3 consecutive years.
Ability to obtain and maintain a Tier 1 Investigation through NASA.

Desired Qualifications:

Experience modernizing or refactoring legacy scientific software
Familiarity with HEASARC tools or high-energy astrophysics data formats (HEASoft, FTOOLS, XSPEC, FITS)
Experience with software build systems (CMake, Autotools, or similar) across multiple platforms
Background in scientific computing or research software engineering
Experience designing software architecture for long-term maintainability and extensibility
Master of Science degree or higher in Physics, Astronomy, Computer Science or a relevant physical science

Team ADNET brings over 30+ years of experience to information systems and professional services for the federal government. With a history of expertise in software development, computer network design, IT security, mission operations support, and educational outreach, Team ADNET is deeply embedded in the Space and Earth Science at NASA's Goddard Space Flight Center (GSFC) in Greenbelt, MD.

ADNET Systems, Inc. is working with Goddard Space Flight Center to fulfill NASA's vision for space exploration, and working with the Science and Exploration Directorate to fulfill its many missions.

ADNET Systems, Inc. is an employee-centric company, committed to providing premier benefits that support our employees and their families. With affordable medical and dental plans coupled with leading disability and life insurance options, ADNET offers our employees the benefits most sought after by today’s professional candidate. Furthermore, our benefits package features the extras that distinguish us from other small businesses, ensuring our high employee retention that our customers appreciate.

Some features of our compensation plans and environment perks include:

Annual Leave/Sick Leave
Military and Family Emergency Leave
Paid Holidays
Performance Bonuses
Medical, Dental and Vision Plans
Direct Deposit Payroll
401K Plan with Company Matching
Tuition Reimbursement
Swag bags

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Refine Your Search

software engineer c# jobs in washington dc

AP108 HEASARC Senior Scientific Software Developer

Backend Software Engineer - AI Trainer

Software Engineer - AI Trainer

TS/SCI Cleared Software Developer - Senior

AP106 Scientific Software Developer

Application Developer

Associate Software Developer

Software Engineer (C#/.NET)

Senior Software Engineer (C#/.NET)

.NET Software Developer

HP100 Scientific Software Developer

Software Developer (C# / .NET - Logistics & Industrial Systems)

Lead, Software Engineer

Senior Embedded Firmware Engineer

CI/CD Pipeline Engineer - AI Trainer

Real-Time Software Engineer

5G DevOps Engineer

Infrastructure Automation Engineer (US Citizenship REQUIRED)

Principal Cyber Software Engineer

Sr. Principal Cyber Software Engineer

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