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Full Internship Jobs in California (NOW HIRING)

Prosum Inc.

Junior Full Stack Engineer

Santa Monica, CA · On-site

$70K - $95K/yr

Junior Full Stack Engineer Salary Range: $70,000-$95,000 About the Role We are seeking a Junior ... Experience working in an Agile development environment through coursework, internships, or ...

Krew Research

Full Stack Engineer

San Francisco, CA · On-site

$150K - $250K/yr

At least 2 years of full time professional, non-internship experience in full-stack engineering * Experience with backend development (Python, Go) * Strong code quality habits (testing, reviews, docs ...

Krew

Full Stack Engineer

San Francisco, CA · On-site

$150K - $250K/yr

At least 2 years of full time professional, non-internship experience in full-stack engineering * Experience with backend development (Python, Go) * Strong code quality habits (testing, reviews, docs ...

Mulhern+Kulp

Engineering Internship

San Diego, CA · On-site

$17.75 - $23/hr

... their full potential. If you bring the right mix of drive and talent, you'll find abundant ... Interns are integrated into their teams and have their own workspaces. We strive to provide a ...

Clerkie

Software Engineer Internship

San Francisco, CA · On-site +1

$80/hr

You'll work across the full stack, collaborating with engineers on frontend, backend, and ... This isn't just another internship - it's an investment in your growth. The ideal Clerkie team ...

Tiny Hero

Internship

Burbank, CA · On-site

$60 - $80/hr

In addition to these possibilities, Tiny Hero interns are also placed in our specially cultivated Internship program which offers a full curriculum of industry-wide knowledge and experience. You will ...

Clerkie

Software Engineer Internship

Los Angeles, CA · On-site +1

$80/hr

You'll work across the full stack, collaborating with engineers on frontend, backend, and ... This isn't just another internship - it's an investment in your growth. The ideal Clerkie team ...

Armadin

Frontend Engineer, Internship

Palo Alto, CA · On-site

$100 - $125/hr

We're a small, fast-moving team, so interns get real ownership: you'll work across the stack, from ... Contribute to scalable frontend and full-stack systems, balancing polish, performance, and ...

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All JobsFull JobsFull Internship JobsFull Internship Jobs in California

Full Internship information

What is a full internship?

A full internship is a structured work experience program where students or recent graduates work full-time, usually for a set period such as a summer or academic semester, to gain practical experience in their field of study. Full internships often involve working regular business hours and participating in real projects under the guidance of professionals. These internships can be paid or unpaid and are designed to help individuals develop relevant skills, build professional networks, and enhance their resumes for future job opportunities.

What types of projects can I expect to work on during a full internship, and how are tasks typically assigned?

During a full internship, you can expect to work on a variety of projects that align with the department’s current priorities and your field of study. Tasks are often assigned based on your skillset, interests, and the team's immediate needs, giving you exposure to both independent assignments and collaborative projects. Supervisors typically provide ongoing guidance and feedback, and you may have opportunities to participate in team meetings, presentations, and cross-functional initiatives. This structure not only supports your learning but also helps integrate you into the daily workflow of the organization.

What are the key skills and qualifications needed to thrive as an intern, and why are they important?

To thrive as an intern, you generally need a solid academic background in a relevant field, eagerness to learn, and basic knowledge of industry principles. Familiarity with productivity tools like Microsoft Office, Google Workspace, or specialized software relevant to the industry may be required. Strong communication, adaptability, and initiative are standout soft skills for making a positive impression and contributing to team projects. These skills and qualities help interns gain valuable experience, adapt quickly, and build a foundation for future career opportunities.

What is the difference between Full Internship vs Part-Time Internship?

AspectFull InternshipPart-Time Internship
DurationTypically 8-12 weeks, full-time hoursUsually 10-20 hours per week
Work Hours40 hours/weekLess than 20 hours/week
Experience LevelIntensive, immersive experienceFlexible, part-time engagement
CompensationOften unpaid or stipend-basedSimilar, varies by organization
PurposeGain comprehensive industry experienceSupplemental learning or academic credit

Full internships provide immersive, full-time experience ideal for gaining in-depth industry knowledge, while part-time internships offer flexible schedules suitable for students balancing other commitments. Both serve as valuable entry points into the industry, but full internships typically involve more responsibilities and learning opportunities.

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

The most popular types of Full jobs in California are:

What cities in California are hiring for Full Internship jobs?

Cities in California with the most Full Internship job openings:

Full Internship jobs near you
Infographic showing various Full Internship job openings in California as of August 2026, with employment types broken down into 6% Internship, 66% Full Time, 25% Part Time, 1% Temporary, and 2% Contract. Highlights an 86% Physical, 2% Hybrid, and 12% Remote job distribution.

Junior Full Stack Engineer

Prosum Inc.

Santa Monica, CA • On-site

$70K - $95K/yr

Other

Posted 25 days ago

Key responsibilities

  • Implement well-scoped features across the frontend and backend stack.

  • Build user interface components using React.js and TypeScript, and develop backend functionality and REST API endpoints using Python/FastAPI.

  • Participate in code reviews, write unit tests, and collaborate with team members through Agile ceremonies and knowledge-sharing activities.

Job description

Job Description
Junior Full Stack Engineer
Salary Range: $70,000-$95,000
About the Role
We are seeking a Junior Full Stack Engineer to join a growing technology organization and help build modern, AI-powered applications. This role is designed for an early-career engineer who has strong technical fundamentals, is eager to learn, and is excited about developing across both frontend and backend technologies.
The Junior Full Stack Engineer will work on well-defined feature tickets, contribute to production applications, and develop their technical skills through hands-on delivery, code reviews, pairing, and mentorship from experienced engineers. This is an opportunity to grow within a collaborative engineering environment that values quality, curiosity, and continuous improvement.
Key ResponsibilitiesFeature Development
  • Implement well-scoped features across the frontend and backend stack.
  • Build user interface components using React.js and TypeScript, following established design systems and component library conventions.
  • Develop backend functionality and REST API endpoints using Python/FastAPI, with guidance from senior engineers.
  • Connect frontend and backend services and develop an understanding of application architecture and data flow.
  • Follow established coding patterns, style guides, development standards, and best practices.
Quality & Learning
  • Write unit tests and develop familiarity with integration testing practices.
  • Participate in code reviews, both receiving feedback on your work and gradually reviewing contributions from other team members.
  • Ask questions early, communicate blockers, and collaborate effectively with engineering leadership and technical leads.
  • Participate in Agile ceremonies, including standups, sprint planning, retrospectives, and demos.
  • Leverage modern AI-assisted development tools to improve productivity and learn engineering patterns and best practices.
Growth & Contribution
  • Take ownership of your professional development in partnership with your manager.
  • Participate in technical learning opportunities, architecture discussions, code pairing, and knowledge-sharing sessions.
  • Contribute ideas for improving engineering tools, documentation, development processes, and team practices.
  • Develop familiarity with AI-powered applications and common LLM integration patterns.
Required Qualifications
  • Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent experience through a coding bootcamp, self-directed learning, or demonstrated personal projects.
  • 0-3 years of professional or internship software engineering experience.
  • Working knowledge of Python and/or JavaScript/TypeScript, with the ability to read and contribute to code in both languages.
  • Basic familiarity with React.js, including components, props, and state.
  • Understanding of REST APIs, including how to consume APIs and basic principles of API design.
  • Experience with Git, including branching, committing, creating pull requests, and resolving merge conflicts.
  • Ability to write basic SQL queries and understand relational database concepts.
  • Strong curiosity, willingness to learn, and ability to receive and apply constructive feedback.
Preferred Qualifications
  • Academic or personal project experience with FastAPI, Flask, or Django.
  • Experience building frontend applications with React.js, including coursework, hackathons, or personal projects.
  • Exposure to a cloud platform such as AWS, Azure, or GCP through coursework or personal projects.
  • Familiarity with AI/ML concepts or experience integrating an LLM API into a project.
  • Experience working in an Agile development environment through coursework, internships, or extracurricular projects.
Work Environment & Requirements
  • Hybrid work environment with structured in-office days to support onboarding, collaboration, and team engagement.
  • Ability to work at a computer workstation for extended periods.
  • Ability to use a keyboard, mouse, and other standard computer equipment.
  • Availability during standard business hours, with flexibility for team ceremonies and occasional production support as needed.

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