Top 258 Javascript ui developer Jobs in San Mateo, Ca

Android Developer - AI Trainer
DataAnnotation —California
- $50 - $100 an hour
- Contract
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
Frontend Developer - AI Trainer
DataAnnotation —Milpitas, CA
- $50 - $100 an hour
- Contract
- Remote
- English
- Mid-level
- Bachelor's degree
- Flexible schedule
Software Engineer - Frontend
Faros —San Mateo, CA
- Full-time
- Hybrid work
- Computer Science
- Software troubleshooting
- 5 years
Quick Apply
Lead Software Engineer - Frontend
Faros —San Mateo, CA
- $210,000 - $250,000 a year
- Full-time
- Hybrid work
- Computer Science
- Software troubleshooting
- 5 years
Quick Apply
UI Developer(React.JS)
Sonoma Consulting Inc. —San Francisco, CA
- Mid-level
- Analysis skills
- Supervising experience
Quick Apply
Frontend Engineer (SF)
General Medicine —San Francisco, CA
- $150,000 - $225,000 a year
- Full-time
- Hybrid work
- Mid-level
- Office
- 3 years
Quick Apply
Odos - Frontend Engineer
deCircle —San Francisco, CA
- Full-time
- Remote
- Mid-level
- AWS
- Analysis skills
Quick Apply
Software Engineer, Frontend
Ramp —San Francisco, CA
- $143,200 - $284,000 a year
- Full-time
- Hybrid work
- Mid-level
- Mentoring
- Recruiting
- Travel reimbursement
- AD&D insurance
Product Engineer, Product Platform
Replit —Foster City, CA
- $225,000 - $320,000 a year
- Full-time
- Hybrid work
- Mid-level
- Office
- APIs
- Commuter assistance
- Disability insurance
Full-Stack Engineer
Cube Dev —San Francisco, CA
- Full-time
- Remote
- English
- Mid-level
- SQL
Quick Apply
Full Stack Engineer - Front End
1X Technologies AS —San Carlos, CA
- $180,000 - $250,000 a year
- Full-time
- Office
- APIs
- Senior level
- Paid holidays
- Dental insurance
Quick Apply
UI Developer
Sonoma Consulting Inc. —Sunnyvale, CA
- Full-time
- Mid-level
- Analysis skills
- Bachelor's degree
Quick Apply
Software Engineer, Frontend
Sim —San Francisco, CA
- $140,000 - $220,000 a year
- Full-time
- System design
- Senior level
- Health insurance
Quick Apply
Front-end developer
Metamins —Burlingame, CA
- Full-time
- Computer science
- Computer Science
- English
- Health insurance
UI Developer
Two95 International Inc. —San Francisco, CA
- Contract
- 8 years
- Senior level
- Communication skills
Quick Apply
Frontend Developer
AVVENIRE SOLUTIONS —Fremont, CA
- Computer Science
- Mid-level
- Bachelor's degree
Principal Frontend Engineer - Discovery
roblox —San Mateo, CA
- $295,250 - $345,040 a year
- Full-time
- Computer science
- Computer Science
- Office
Design Engineer
Replit —Foster City, CA
- $180,000 - $290,000 a year
- Full-time
- Hybrid work
- Office
- 8 years
- Mentoring
- Commuter assistance
- Disability insurance
Senior Frontend Engineer
Grid —Oakland, CA
- $135,000 - $150,000 a year
- Full-time
- Remote
- Computer Science
- 5 years
- Bachelor of Science
- Health insurance
- Dental insurance
Quick Apply
Frontend Software Engineer
Outset —San Francisco, CA
- $160,000 - $300,000 a year
- Full-time
- Hybrid work
- Mid-level
- 3 years
Quick Apply

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javascript ui developer jobs near san mateo, ca

Android Developer - AI Trainer

DataAnnotation -
California

Apply Now

Job Details

Contract
$50 - $100 an hour

Benefits

Flexible schedule

Qualifications

Writing skills
C#
English
SQL
C++
JavaScript
Swift
Grammar Experience
Python
HTML

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 Android Developer - 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

Job Type: Contract

Pay: $50.00 - $100.00 per hour

Work Location: Remote

Apply Now

Refine Your Search

javascript ui developer jobs in san mateo, ca

Android Developer - AI Trainer

Frontend Developer - AI Trainer

Software Engineer - Frontend

Lead Software Engineer - Frontend

UI Developer(React.JS)

Frontend Engineer (SF)

Odos - Frontend Engineer

Software Engineer, Frontend

Product Engineer, Product Platform

Full-Stack Engineer

Full Stack Engineer - Front End

UI Developer

Software Engineer, Frontend

Front-end developer

UI Developer

Frontend Developer

Principal Frontend Engineer - Discovery

Design Engineer

Senior Frontend Engineer

Frontend Software Engineer

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