Top 1289 software engineer c# Jobs in washington, dc

Software Engineer - AI Trainer
DataAnnotation —Suitland, MD
- $50 - $100 an hour
- Contract
- Remote
- English
- Mid-level
- Bachelor's degree
- Flexible schedule
Software Engineer
Constellation Inc —Washington, DC
- $110,000 - $130,000 a year
- Full-time
- Hybrid work
- Computer Science
- Mid-level
- Bachelor's degree
- Health insurance
- Dental insurance
Contract Software Engineer - AI Trainer
DataAnnotation —Washington, DC
- $50 - $100 an hour
- Contract
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Software Engineer for Autonomous Systems
Johns Hopkins Applied Physics Laboratory (APL) —Laurel, MD
- $100,000 - $245,000 a year
- Full-time
- Computer Science
- Bachelor of Science
- Mid-level
- Disability insurance
- Health insurance
Software Developer - Expert
Amentum —Chantilly, VA
- $225,000 - $235,000 a year
- Full-time
- Computer science
- Computer Science
- Pass drug screening
Quick Apply
16h
Sr. Software Engineer TS/SCI Polygraph
Leidos —Alexandria, VA
- $131,300 - $237,350 a year
- Full-time
- Bachelor of Science
- Writing skills
- Windows
Geospatial Systems Software Engineer, Senior
General Dynamics Information Technology —Springfield, VA
- $162,037 - $219,227 a year
- Master's degree
- SQL
- C++
- Paid time off
- Work from home
Geospatial Systems Software Engineer, Senior
General Dynamics Information Technology —Springfield, VA
- $162,037 - $219,227 a year
- Master's degree
- SQL
- C++
- Paid time off
- Work from home
Sr. Software Engineer TS/SCI Polygraph
Leidos —Annapolis Junction, MD
- $131,300 - $237,350 a year
- Full-time
- Bachelor of Science
- Writing skills
- Windows
Principal Software Engineer
Focused Support LLC —Columbia, MD
- $185,000 - $240,000 a year
- Full-time
- Hybrid work
- Computer science
- Management
- Computer Science
- Relocation assistance
- Health insurance
Quick Apply
HP100 Scientific Software Developer
ADNET Systems, Inc. —Greenbelt, MD
- Overtime
- Computer Science
- Java
- Bachelor's degree
- Paid holidays
- Disability insurance
Quick Apply
AP106 Scientific Software Developer
ADNET Systems, Inc. —Greenbelt, MD
- Mid-level
- 3 years
- Bachelor's degree
- Paid holidays
- Disability insurance
Quick Apply
AP108 HEASARC Senior Scientific Software Developer
ADNET Systems, Inc. —Greenbelt, MD
- Computer Science
- Bachelor of Science
- Bachelor's degree
- Paid holidays
- Disability insurance
Quick Apply
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
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
Formal Verification and Software Assurance Engineer
Johns Hopkins Applied Physics Laboratory (APL) —Laurel, MD
- $100,000 - $245,000 a year
- Full-time
- Computer Science
- Mid-level
- Windows
- Disability insurance
- Health insurance
Fullstack .NET Developer
IvoryCloud —Rockville, MD
- $95,000 - $125,000 a year
- Full-time
- Hybrid work
- Background check
- Computer Science
- System design
- Paid training
- Disability insurance
Quick Apply
13h
Senior Software Defined Radio Developer
Teltrium, Inc. —Greenbelt, MD
- $118,000 - $150,000 a year
- Full-time
- 5 years
- Master's degree
- Analysis skills
- Health insurance
- Dental insurance
Quick Apply
Full Stack Developer - AI Trainer
DataAnnotation —Washington, DC
- $50 - $100 an hour
- Contract
- Remote
- English
- Mid-level
- Bachelor's degree
- Flexible schedule
Senior Software Developer
Amentum —Chantilly, VA
- $190,000 - $220,000 a year
- Full-time
- Computer science
- 7 years
- Computer Science
- Paid parental leave
- Health savings account
Quick Apply

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software engineer c# jobs near washington, dc

Software Engineer - AI Trainer

DataAnnotation -
Suitland, MD

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Job Details

On demand | Contract
$50 - $100 an hour

Benefits

Flexible schedule

Qualifications

C#
English
Bachelor's degree
AI
Grammar Experience
Python

Full Job Description

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule.

We are looking for a proficient Software Engineer - AI Trainer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development.

Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a full-time role, while others treat it as their primary focus, choosing projects and schedules that align with their availability and goals.

To get started, once you sign up for an account, you'll take a short assessment (this serves as our version of an interview). If you pass that assessment, you’ll receive an email confirmation, and paid work will become available to you through our platform.

Benefits:

Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule: choose which projects you take on and when you work.
Competitive pay: projects are paid hourly, up to $100+ USD per hour. Opportunities for higher-paying projects are available with strong performance.
Impact: help shape the future of AI technologies.
Responsibilities:

Design and solve diverse coding problems used to train AI systems.
Write clear, high-quality code snippets and detailed explanations.
Evaluate AI-generated code for accuracy, performance, and clarity.
Provide feedback that directly shapes the next generation of AI models.
Qualifications:

Fluency in English (native or bilingual level).
Proficiency in at least one of the following programming languages or frameworks: JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, Kotlin, or Swift.
Excellent writing and grammar skills.
A bachelor’s degree (completed or in progress).
Previous experience as a Software Developer, Coder, Software Engineer, or Programmer is preferred.
Note: Payment is made via PayPal. We will never ask for any money from you. PayPal will handle any currency conversions from USD. This job is only available to those in the US, Canada, UK, Ireland, Australia, and New Zealand. Those located outside of these countries will not see work or assessments available on our site at this time.

#INDCODSTN

Pay: $50.00 - $100.00 per hour

Work Location: Remote

Apply Now

Refine Your Search

software engineer c# jobs in washington, dc

Software Engineer - AI Trainer

Software Engineer

Contract Software Engineer - AI Trainer

Software Engineer for Autonomous Systems

Software Developer - Expert

Sr. Software Engineer TS/SCI Polygraph

Geospatial Systems Software Engineer, Senior

Geospatial Systems Software Engineer, Senior

Sr. Software Engineer TS/SCI Polygraph

Principal Software Engineer

HP100 Scientific Software Developer

AP106 Scientific Software Developer

AP108 HEASARC Senior Scientific Software Developer

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

Real-Time Software Engineer

Formal Verification and Software Assurance Engineer

Fullstack .NET Developer

Senior Software Defined Radio Developer

Full Stack Developer - AI Trainer

Senior Software Developer

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