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Frontend Developer Internship Jobs in California

Palantir

$10K/mo

As a Software Engineer Intern, you'll have an opportunity to grow more quickly than you ever ... For example, you might join a team that builds a Foundry front-end application, or a component of ...

New

Palantir

Software Engineer, Internship

Palo Alto, CA · On-site

$10K/mo

As a Software Engineer Intern, you'll have an opportunity to grow more quickly than you ever ... For example, you might join a team that builds a Foundry front-end application, or a component of ...

Palantir

Software Engineer, Internship

Palo Alto, CA

$10K/mo

As a Software Engineer Intern, you'll have an opportunity to grow more quickly than you ever ... For example, you might join a team that builds a Foundry front-end application, or a component of ...

Phonely Ltd

Software Engineer Intern

San Francisco, CA · On-site

Software Engineer Internship This is a high-impact internship where you'll write real code, ship ... Investigate and troubleshoot real customer issues across frontend and backend systems * Work ...

Palantir

$10K/mo

Varying languages, including Java and Go for backend and Typescript for frontend * Open-source ... start of internship. * Experience coding in programming languages, such as Java, C++, Python ...

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Frontend Developer Internship information

See California salary details

$41.9K

$109K

$153.5K

How much do frontend developer internship jobs pay per year?

As of Sep 5, 2026, the average yearly pay for frontend developer internship in California is $108,967.00, according to ZipRecruiter salary data. Most workers in this role earn between $102,600.00 and $119,400.00 per year, depending on experience, location, and employer.

What is a frontend developer internship?

A Frontend Developer Internship is a temporary position designed to give aspiring developers hands-on experience building and designing user interfaces for websites and web applications. Interns typically work with HTML, CSS, and JavaScript, and may use frameworks like React or Angular. They collaborate with designers and backend developers to improve the user experience. This role helps interns develop professional coding skills and gain industry knowledge while working on real projects.

What kind of projects and responsibilities can I expect during a frontend developer internship?

As a Frontend Developer Intern, you'll typically work on real-world projects such as building user interfaces, fixing bugs, or contributing to new features under the guidance of experienced developers. Your daily tasks may include writing and testing code, participating in code reviews, and collaborating with designers and backend teams to deliver a seamless user experience. Interns often take part in agile team meetings and are encouraged to share ideas and ask questions. Working closely with your colleagues provides valuable mentorship and a chance to build both technical and teamwork skills that are vital for future roles in frontend development.

What are the key skills and qualifications needed to thrive in a frontend developer internship?

To thrive as a Frontend Developer Intern, a solid understanding of HTML, CSS, and JavaScript, along with a foundational knowledge of responsive design and web accessibility, is essential. Familiarity with frameworks like React or Angular, code versioning tools such as Git, and hands-on project experience are typically expected; relevant coursework or certifications can provide an edge. Strong problem-solving abilities, effective communication, and a willingness to learn in a collaborative environment are key soft skills. These qualities ensure interns can quickly contribute to real projects, adapt to the team's workflow, and develop the professional skills required for a successful tech career.

What are the most commonly searched types of Frontend Developer jobs in California?

The most popular types of Frontend Developer jobs in California are:

What are popular job titles related to Frontend Developer Internship jobs in California?

For Frontend Developer Internship jobs in California, the most frequently searched job titles are:

What job categories do people searching Frontend Developer Internship jobs in California look for?

The top searched job categories for Frontend Developer Internship jobs in California are:

What cities in California are hiring for Frontend Developer Internship jobs?

Cities in California with the most Frontend Developer Internship job openings:

Frontend Developer Internship jobs near you
Infographic showing various Frontend Developer Internship job openings in California as of August 2026, with employment types broken down into 85% Full Time, 2% Part Time, and 13% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $108,967 per year, or $52.4 per hour.

Software Engineer, Frontend/Web App

AI Chopping Block

San Carlos, CA • On-site

$120 - $160/hr

Other

Medical, Retirement, PTO

Posted 17 days ago

Job description

About Beacon AI

We’re a fast-moving team of aviators, engineers, and operators building an AI platform to make flying safer, more efficient, and more capable. Backed by top investors, we’ve secured a dozen Department of Defense contracts and partnered with major airlines to deliver mission-critical systems. We operate without silos or heavy processes. Small, focused teams own what they build, ship quickly, and learn fast, pushing the boundaries of how humans and AI work together in aviation.

Role Overview

We are seeking a Frontend Web App Engineer to join our team and help build high-impact web interfaces that integrate with our flight safety platform. In this role, you will work closely with senior engineers, product managers, and designers to develop user-facing features that enable interaction with complex aviation data. You’ll contribute to production systems, grow your technical skills, and play a meaningful role in advancing flight safety and operational efficiency.

What You’ll Do

  • Design and implement React-based features for web applications that work with real-time and historical aviation data.

  • Integrate, process, and visualize data from multiple sources, including live streams and archived datasets.

  • Collaborate with backend engineers, product managers, and UX/UI designers on feature design and implementation.

  • Contribute to code reviews and follow established frontend best practices and architectural patterns.

  • Help ensure frontend systems are reliable and maintainable through testing and documentation.

  • Contribute to reusable components and shared frontend libraries.

What Will Make You Successful

  • 2+ years of experience building user-facing web applications, or equivalent experience through internships, projects, or coursework.

  • Experience with React, TypeScript, JavaScript, state management, and modern web standards (HTML/CSS).

  • Familiarity with asynchronous frontend patterns and working with APIs or data streams.

  • Strong problem-solving skills and eagerness to learn from feedback and mentorship.

  • Ability to work effectively in a collaborative, fast-moving environment.

  • Attention to code quality, performance, and maintainability.

Bonus Points

  • Passion for aviation and a desire to improve air travel efficiency and safety.

  • Experience with mapping or geospatial tools such as Mapbox or Cesium.

  • Exposure to live data or video streaming concepts.

Work Location

This is a hybrid role based in San Carlos, CA, with 3+ days per week onsite and the option to work remotely on remaining days.

Perks & Benefits (Full-Time Employees)

  • Healthcare: 100%* of employee medical premiums covered; 25% for dependents

  • Time Off: 3 weeks PTO plus 13+ paid company holidays

  • 401(k): Offered (no current employer match, but we are committed to enhancing this benefit in the future)

Due to U.S. export control regulations, we can only hire U.S. Persons (U.S. citizens, Green Card holders, lawful permanent residents, or individuals granted asylum or refugee status). We are unable to provide visa sponsorship or support visa transfers. All work must be performed in the United States.

Beacon AI is an equal opportunity employer and does not discriminate based on race, color, religion, sex, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, veteran status, or any other protected characteristic. We prohibit harassment or discrimination of any kind in the workplace and comply with all applicable federal, state, and local employment laws.

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