Top 1819 Java Engineer Jobs in San Mateo, CA

Backend Software Engineer - AI Trainer
DataAnnotation —Dublin, CA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
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Backend Software Engineer - AI Trainer
DataAnnotation —South San Francisco, CA
- $50 - $100 an hour
- Part-time
- Remote
- Writing skills
- English
- Mid-level
- Flexible schedule
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Hibernate, Restful Webservices
Sonsoft Inc —Sunnyvale, CA
- Full-time
- Research
- Mid-level
- Bachelor's degree
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Server Side Java Engineer with Twitter API Experience
Sonsoft Inc —Sunnyvale, CA
- Full-time
- 5 years
- US work authorization
- Senior level
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Server Side Java Engineer with Twitter API Experience
Sonsoft Inc —Sunnyvale, CA
- Contract
- 5 years
- US work authorization
- Senior level
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Java /AngularJS
Sonsoft Inc —Sunnyvale, CA
- Full-time
- Mid-level
- 3 years
- SQL
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Java UI Engineer
Sonsoft Inc —Sunnyvale, CA
- Full-time
- Mid-level
- Java
- Analysis skills
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Java J2EE Engineer
Sonsoft Inc —Sunnyvale, CA
- Full-time
- Oracle
- Maintenance
- Mid-level
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Hiring Java Developers
AG Technologies —San Francisco, CA
- Computer Science
- Mid-level
- Java
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java developer
Code Lab Technology —San Francisco, CA
- Contract
- Mid-level
- Java
- Bachelor's degree
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Java/Python Engineer - Santa Clara, CA
Calypso Way —Santa Clara, CA
- $45 - $50 an hour
- Contract
- Mid-level
- 3 years
- Java
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2d
Software Engineer
Fuku —San Francisco, CA
- Full-time
- Computer Science
- Mid-level
- Java
- Paid holidays
- Health insurance
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Java/OBIEE Opportunities
AG Technologies —San Francisco, CA
- Computer Science
- Java
- Master's degree
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Software Engineer (Java)
Nerdify —San Francisco, CA
- Mid-level
- Java
- HTML
Java/Networking Positions
AG Technologies —San Francisco, CA
- Mid-level
- Master's degree
- SQL
Quick Apply
Backend engineers
Alan AI —Sunnyvale, CA
- Full-time
- System design
- Mid-level
- Java
Java Backend Engineer
UST —Sunnyvale, CA
- $75,000 - $113,000 a year
- Writing skills
- System design
- SQL
- Paid jury duty
- Health savings account
Quick Apply
Senior Software Engineers - Java
BluePal software solution and services —Sunnyvale, CA
- Computer Science
- Mid-level
- Office
Backend Engineer
HeyGen —San Francisco, CA
- $170,000 - $220,000 a year
- Azure
- Computer Science
- System design
- Health insurance
- Paid time off
Engineering
Beans.ai —Palo Alto, CA
- Email
- Computer Science
- System design
- Mid-level

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Java Engineer jobs near San Mateo, CA

Backend Software Engineer - AI Trainer

DataAnnotation -
Dublin, CA

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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 Backend Software Engineer - 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.

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Refine Your Search

Java Engineer jobs in San Mateo, CA

Backend Software Engineer - AI Trainer

Backend Software Engineer - AI Trainer

Hibernate, Restful Webservices

Server Side Java Engineer with Twitter API Experience

Server Side Java Engineer with Twitter API Experience

Java /AngularJS

Java UI Engineer

Java J2EE Engineer

Hiring Java Developers

java developer

Java/Python Engineer - Santa Clara, CA

Software Engineer

Java/OBIEE Opportunities

Software Engineer (Java)

Java/Networking Positions

Backend engineers

Java Backend Engineer

Senior Software Engineers - Java

Backend Engineer

Engineering

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