Top 531 Ui Developer Jobs in San Mateo, CA

Android Developer - AI Trainer
DataAnnotation —Cupertino, CA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Digital Support Specialist
California Teachers Association —Burlingame, CA
- $7,669 - $8,236 a month
- Overtime
- Background check
- Word processing
- Computer literacy
- Health insurance
- Dental insurance
Frontend Developer - AI Trainer
DataAnnotation —Milpitas, CA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Quick Apply
Frontend Developer (React) Junior/Mid
Careerswift —San Francisco, CA
- Full-time
- Remote
- Mid-level
- 3 years
Intermediate/Junior Web Developer
Social Concepts —Redwood, CA
- Email
- Computer science
- Computer Science
- Bachelor of Science
Web Development
Family Reunion —San Francisco, CA
- Email
- Microsoft Outlook
- Windows
- SQL
Software Engineer -- Frontend
Skydera —Palo Alto, CA
- Mid-level
- Office
- Health insurance
- Dental insurance
Web Developer
San Francisco Bay University —Fremont, CA
- $45 - $65 an hour
- Full-time
- Hybrid work
- Mid-level
- University
- Bachelor's degree
Quick Apply
13d
UI React. JS
Avila Trading —Fremont, CA
- Computer science
- 6 years
- Computer Science
Frontend Developer
AIM —San Francisco, CA
- $124,865.64 - $150,375.83 a year
- Full-time
- Azure
- Mid-level
- Office
Quick Apply
Product Engineer - Frontend
Promise —San Francisco, CA
- $170,000 - $220,000 a year
- Full-time
- Hybrid work
- Mid-level
- Office
- AWS
- Paid holidays
- Health insurance
Frontend Engineer - UI/UX Focus
Zettabyte —Palo Alto, CA
- Full-time
- Hybrid work
- Mid-level
- Office
- US work authorization
UI Developer
Logic —Mountain View, CA
- $49.29 - $59.29 an hour
- Full-time
- Computer Science
- Mid-level
- Office
- Disability insurance
- Health insurance
13d
Front-End Engineer (Anime)
Spellbrush —San Francisco, CA
- Full-time
- Remote
- Mid-level
- Office
Frontend Developer
AVVENIRE SOLUTIONS —Fremont, CA
- Computer Science
- Mid-level
- Bachelor's degree
Frontend Engineer (React/TypeScript)
OnHires —San Francisco, CA
- Full-time
- Remote
- 3 years
- Mentoring
- Agile
Software Engineer (Front-end)
Finrise —Burlingame, CA
- Email
- Office
- AWS
- Continuous improvement
Senior Frontend Engineer, Mobile
Roger Healthcare —San Francisco, CA
- $170,000 - $230,000 a year
- Full-time
- Remote
- 6 years
- Older adults
- In-person
- Paid time off
- Vision insurance
Staff Frontend Software Engineer
Clerk AI —San Francisco, CA
- Remote
- 6 years
- Mentoring
- Senior level
- Dental insurance
- 401(k) 4% Match
Quick Apply
Frontend Software Engineer
HeyGen —San Francisco, CA
- $180,000 - $240,000 a year
- Mid-level
- HTML
- Health insurance
- Paid time off

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Ui Developer jobs near San Mateo, CA

Android Developer - AI Trainer

DataAnnotation -
Cupertino, CA

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Job Details

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

Benefits

Flexible schedule

Qualifications

English

Full Job Description

We are looking for an existing Android 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, up 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

Ui Developer jobs in San Mateo, CA

Android Developer - AI Trainer

Digital Support Specialist

Frontend Developer - AI Trainer

Frontend Developer (React) Junior/Mid

Intermediate/Junior Web Developer

Web Development

Software Engineer -- Frontend

Web Developer

UI React. JS

Frontend Developer

Product Engineer - Frontend

Frontend Engineer - UI/UX Focus

UI Developer

Front-End Engineer (Anime)

Frontend Developer

Frontend Engineer (React/TypeScript)

Software Engineer (Front-end)

Senior Frontend Engineer, Mobile

Staff Frontend Software Engineer

Frontend Software Engineer

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