Top 50 C# developer Jobs in Fairfield, Ca

Software Developer - AI Trainer
DataAnnotation —Walnut Creek, CA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Software Developer - AI Trainer
DataAnnotation —Antioch, CA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Web Applications Developer
Partnership HealthPlan of California —Fairfield, CA
- $122,667.11 - $159,467.24 a year
- Full-time
- Computer science
- Computer Science
- System design
Full stack .net developer (Concord, CA/ Charlotte, NC)
Cypress Global Services, Inc —Concord, CA
- Contract
- Mid-level
- SQL
- APIs
Quick Apply
Sr. .Net Analyst
ideaoninc —Concord, CA
- $132,870 a year
- Computer Science
- Mid-level
- Bachelor's degree
Senior Web Application Developer
Partnership HealthPlan of California —Fairfield, CA
- $141,067.17 - $183,387.32 a year
- Full-time
- Computer science
- Computer Science
- 5 years
Sr. .Net Developer
ideaoninc —Concord, CA
- Computer science
- Computer Science
- Research
.Net Fullstack Developer_Fairfield(California)
ISHIR —Fairfield, CA
- Contract
- 7 years
- Office
- SQL
Quick Apply
Software Engineer 2
Berkshire Hathaway Homestate Companies —Walnut Creek, CA
- $136,600 - $163,660 a year
- Hybrid work
- Azure
- Computer Science
- 5 years
- Free parking
- AD&D insurance
Quick Apply
UI Developer
Accenture —Walnut Creek, CA
- $49.29 - $59.29 an hour
- Full-time
- Computer Science
- Mid-level
- Office
- Disability insurance
- Health insurance
Software Developer - Graphics
Computers & Structures —Walnut Creek, CA
- Computer science
- Computer Science
- Software troubleshooting
- Health insurance
- Dental insurance
Software Engineer 3
Berkshire Hathaway Homestate Companies —Walnut Creek, CA
- $167,540 - $206,780 a year
- Hybrid work
- Azure
- Computer Science
- System design
- Free parking
- AD&D insurance
Quick Apply
Software Engineer II
Applied Materials —Benicia, CA
- $108,000 - $148,500 a year
- Full-time
- Computer Science
- Mid-level
- Bachelor's degree
Senior EDI Application Developer
Partnership HealthPlan of California —Fairfield, CA
- $141,067.17 - $183,387.32 a year
- Full-time
- Computer science
- Management
- Computer Science
Lead of Business Applications (LBA-2026)
Berkshire Hathaway Homestate Companies —Walnut Creek, CA
- $200,449.60 - $200,699.00 a year
- Email
- Azure
- Computer Science
- Mid-level
Quick Apply
6d
Full Stack Engineer Manager
Accenture —Walnut Creek, CA
- $87,400 - $293,800 a year
- Full-time
- Hybrid work
- Writing skills
- Analysis skills
- Mentoring
- Paid holidays
- Disability insurance
Engineer - RTOS US
Aptiv plc —Walnut Creek, CA
- Computer Science
- Bachelor of Science
- System design
Manager of Web Application Development
Partnership HealthPlan of California —Fairfield, CA
- $141,067.17 - $183,387.32 a year
- Full-time
- Computer science
- Computer Science
- 5 years
Android Developer - AI Trainer
DataAnnotation —California
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Application Developer - AI Trainer
DataAnnotation —California
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply

I want to receive the latest job alert for c# developer in fairfield, ca

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Explore jobs in more locations

c# developer jobs near fairfield, ca

Software Developer - AI Trainer

DataAnnotation -
Walnut Creek, CA

Quick Apply

Job Details

Part-time | Full-time | Contract
$50 - $100 an hour

Benefits

Flexible schedule

Qualifications

English

Full Job Description

DataAnnotation is committed to creating quality AI. Help train AI chatbots while gaining the flexibility of remote work and choosing your own schedule.

We are looking for an existing Software Developer - AI Trainer to help train AI models. 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. You can fit this work alongside a full-time role, or treat it as your primary focus, choosing projects and schedules that align with your 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.

Advantages of contracting with us:

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, on your own computer, from the comfort of your own home.
Competitive pay: projects are paid hourly at $50 to $100 USD per hour. Opportunities for higher bonus rates available for certain projects.
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.

Quick Apply

Refine Your Search

c# developer jobs in fairfield, ca

Software Developer - AI Trainer

Software Developer - AI Trainer

Web Applications Developer

Full stack .net developer (Concord, CA/ Charlotte, NC)

Sr. .Net Analyst

Senior Web Application Developer

Sr. .Net Developer

.Net Fullstack Developer_Fairfield(California)

Software Engineer 2

UI Developer

Software Developer - Graphics

Software Engineer 3

Software Engineer II

Senior EDI Application Developer

Lead of Business Applications (LBA-2026)

Full Stack Engineer Manager

Engineer - RTOS US

Manager of Web Application Development

Android Developer - AI Trainer

Application Developer - AI Trainer

I want to receive the latest job alert for c# developer in fairfield, ca

Explore jobs in more locations

Job Seeker Tools

Employer Tools

Browse

Stay Connected