ZipRecruiter

Log In

1

Intern Mern Stack Developer Jobs in California (NOW HIRING)

Juicebox, Inc

Software Engineer Intern

San Francisco, CA · On-site

$60/hr

How can we improve our internal tools, developer experience, or testing infrastructure? * How can ... Our stack includes Next.js, React, Node.js, OpenSearch, AWS SQS, Spark, and a variety of inference ...

New

RocketRide Inc.

AI Developer Intern

San Francisco, CA · On-site

$22.75 - $29.75/hr

About This Role We're searching for an AI Developer Intern for the fall term (mid-Sep through mid ... Hands-on work with cutting-edge agentic AI tools, frameworks, and infrastructure - the real stack ...

InnoActive Group

Software Engineer Intern

San Jose, CA · On-site

You will work across the entire stack, from building responsive user interfaces to designing robust ... • Cloud & DevOps: Render, Google Cloud Platform (GCP), Docker, CI/CD pipelines • Version ...

New

InnoActive Group

Software Engineer Intern

Sunnyvale, CA · On-site

You will work across the entire stack, from building responsive user interfaces to designing robust ... • Cloud & DevOps: Render, Google Cloud Platform (GCP), Docker, CI/CD pipelines • Version ...

New

InnoActive Group

Software Engineer Intern

Alameda, CA · On-site

You will work across the entire stack, from building responsive user interfaces to designing robust ... • Cloud & DevOps: Render, Google Cloud Platform (GCP), Docker, CI/CD pipelines • Version ...

New

InnoActive Group

Software Engineer Intern

Sonoma, CA · On-site

You will work across the entire stack, from building responsive user interfaces to designing robust ... • Cloud & DevOps: Render, Google Cloud Platform (GCP), Docker, CI/CD pipelines • Version ...

New

InnoActive Group

Software Engineer Intern

Fremont, CA · On-site

You will work across the entire stack, from building responsive user interfaces to designing robust ... • Cloud & DevOps: Render, Google Cloud Platform (GCP), Docker, CI/CD pipelines • Version ...

New

Clera

Founding Engineer Intern

San Francisco, CA · On-site

... Intern to join their founding team in San Francisco. You'll work directly with the CTO to ship ... Full-stack focus -- not an ML engineer and not overly specialized in a single language (e.g. Python ...

InnoActive Group

Software Engineer Intern

San Mateo, CA · On-site

You will work across the entire stack, from building responsive user interfaces to designing robust ... • Cloud & DevOps: Render, Google Cloud Platform (GCP), Docker, CI/CD pipelines • Version ...

New

InnoActive Group

Software Engineer Intern

Hayward, CA · On-site

You will work across the entire stack, from building responsive user interfaces to designing robust ... • Cloud & DevOps: Render, Google Cloud Platform (GCP), Docker, CI/CD pipelines • Version ...

New

Clera

Founding Engineer Intern

San Francisco, CA · On-site

... Intern to join their founding team in San Francisco. You'll work directly with the CTO to ship ... Full-stack focus - not an ML engineer and not overly specialized in a single language (e.g. Python ...

previous page

Showing results 41-60

All JobsIntern Mern Stack Developer JobsIntern Mern Stack Developer Jobs in California

Intern Mern Stack Developer information

What is an intern MERN stack developer?

Intern MERN Stack Developers are entry-level programmers who assist in building web applications using the MERN stack, which stands for MongoDB, Express.js, React.js, and Node.js. As interns, they work under the guidance of senior developers to gain hands-on experience in designing, developing, and deploying full-stack web applications. Their responsibilities typically include writing code, fixing bugs, collaborating with teams, and learning best practices in software development. This role is ideal for those looking to start a career in web development and gain practical experience with modern JavaScript technologies.

What types of projects and tasks can I expect to work on as an intern MERN stack developer?

As an Intern MERN Stack Developer, you will typically participate in projects that involve building and maintaining web applications using MongoDB, Express.js, React, and Node.js. Your daily tasks may include writing and testing code, fixing bugs, developing new features under the guidance of senior developers, and contributing to team meetings. You'll likely collaborate with designers, backend engineers, and QA testers, gaining exposure to the full software development lifecycle. This hands-on experience is valuable for building your technical skills and understanding industry-standard development workflows.

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

To thrive as an Intern MERN Stack Developer, you need a solid understanding of JavaScript, HTML, CSS, and the core components of the MERN stack: MongoDB, Express.js, React.js, and Node.js, often supported by relevant coursework or self-led projects. Familiarity with version control systems like Git, basic RESTful API development, and optionally cloud platforms or CI/CD tools is valuable. Strong problem-solving skills, eagerness to learn, and effective communication help you collaborate with teams and adapt to new tasks quickly. These skills are crucial for contributing to real-world projects, resolving development challenges, and growing into a proficient full-stack developer.

What is the difference between Intern Mern Stack Developer vs Junior Mern Stack Developer?

AspectIntern Mern Stack DeveloperJunior Mern Stack Developer
Experience LevelEntry-level, internshipEntry to early professional experience
ResponsibilitiesAssisting in development tasks, learning, supporting senior developersDeveloping features, fixing bugs, contributing to projects
Skills & CertificationsBasic knowledge of MERN stack, learning mindsetProficiency in MongoDB, Express.js, React, Node.js, some certifications
Work EnvironmentInternship programs, training-focusedFull or part-time roles in tech teams

The main difference between an Intern Mern Stack Developer and a Junior Mern Stack Developer lies in experience and responsibilities. Interns are typically students or beginners gaining hands-on experience, while Junior developers have some practical skills and contribute more independently. Intern roles focus on learning and support, whereas Junior roles involve active development and problem-solving.

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

The most popular types of Mern Stack Developer jobs in California are:

What are popular job titles related to Intern Mern Stack Developer jobs in California?

For Intern Mern Stack Developer jobs in California, the most frequently searched job titles are:

What job categories do people searching Intern Mern Stack Developer jobs in California look for?

The top searched job categories for Intern Mern Stack Developer jobs in California are:

What cities in California are hiring for Intern Mern Stack Developer jobs?

Cities in California with the most Intern Mern Stack Developer job openings:

Intern Mern Stack Developer jobs near you
Infographic showing various Intern Mern Stack Developer job openings in California as of August 2026, with employment types broken down into 50% Full Time, and 50% Part Time. Highlights an 100% In-person job distribution.

Software Engineer Intern

Juicebox, Inc

San Francisco, CA • On-site

$60/hr

Full-time, Internship

Medical, Dental, Vision

Posted yesterday

New

Job description

About Juicebox
Juicebox is on a mission to help teams win the talent war.
In the age of AI, human ingenuity is the ultimate scarce resource. Recruiting is a zero-sum game where you either compete or lose.
Teams at Ramp, Notion, and leading AI labs use Juicebox to power their hiring, alongside 5,000+ customers from early-stage startups to Fortune 500 companies.
We are on the path to $100M in ARR with 20%+ monthly growth, powering thousands of searches every day and making Juicebox one of the fastest-growing AI SaaS companies in the world.
Juicebox has raised over $116M in funding from lead investors including Sequoia Capital, DST Global, and NFDG. Read more about our $80M Series B here. Additional investors in Juicebox include Y Combinator, Coatue, Bond, Lux, Verified Capital, and Committed Capital.
About the Internship
This is a 12-week, in-person internship based in our San Francisco office.
As a Software Engineering Intern, you'll own a meaningful project that contributes directly to Juicebox's product or engineering infrastructure. You won't be working on a hypothetical intern assignment: you'll build alongside our engineers, ship real work, and see how customers use what you create.
Depending on your interests and the needs of the team, you might work on questions like:
  • How can we improve the quality and ranking of our search results?
  • What new filters or data sources could make our search engine more powerful?
  • How can we use LLMs to make recruiters dramatically more effective?
  • How can we improve our internal tools, developer experience, or testing infrastructure?
  • How can we delight a new user in their first few minutes with Juicebox?

Recent engineering projects have included fine-tuning models to extract insights from profiles, building feedback loops to improve search queries, and shipping new product experiences from end to end.
Our stack includes Next.js, React, Node.js, OpenSearch, AWS SQS, Spark, and a variety of inference providers and LLMs. You don't need experience with every part of our stack, but you should be excited to learn quickly by building.
What You'll Experience
You'll have both a manager and a mentor throughout the summer:
  • Your manager will help scope your project, give you regular feedback, and support your performance and growth.
  • Your mentor will be an additional resource for technical guidance, navigating Juicebox, and making the most of your internship.

You'll also participate in a small intern cohort with programming such as:
  • Practical sessions on getting the most from 1:1s and giving and receiving feedback
  • Conversations with Juicebox leaders, founders, and investors
  • Cohort outings and a dinner with our executive team
  • An end-of-summer demo where you'll share what you built

About You
  • You are currently pursuing a degree in computer science, engineering, or a related technical field-or have developed equivalent skills through your own experience.
  • You've built something from scratch, whether through a class, personal project, research, internship, startup, or open-source contribution.
  • You enjoy solving ambiguous problems and learning by building.
  • You take ownership, ask thoughtful questions, and are comfortable seeking feedback.
  • You care about the people using what you build-not just whether the code works.
  • You have experience programming in at least one language and a solid understanding of core computer science concepts.
  • You can work from our San Francisco office for the full 12-week internship.

You do not need to have used our exact stack before. We care more about your curiosity, technical foundation, pace of learning, and the quality of what you've built.
Compensation & Perks
  • $60 per hour
  • Housing or relocation stipend
  • Daily meals in our San Francisco office
  • Intern events, leadership conversations, and professional-development sessions
  • Meaningful ownership and the opportunity to ship work used by real customers

Dates
Our Summer 2027 cohort will have two 12-week groups, one will run from May 24, 2027 through August 13, 2027, the other will run from June 14 through September 3, 2027.
Your start date depends on university calendars. Please share your availability when applying.
Perks & Benefits for Full Time Employees
  • Top-of-market compensation with meaningful equity, because everyone should share in our success.
  • Comprehensive healthcare with 100% employer-paid medical coverage for employees (PPO Platinum plan with $0 deductible). 90% employer contribution for dependents. Dental & Vision: 90% employer covered; 85% for dependents.
  • $2,000 annual wellness stipend to support your physical, mental, and financial well-being.
  • Daily meals provided.
  • $300/month commuting stipend to help cover the cost of getting to and from the office.

Apply