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Full Stack Internship Jobs in California (NOW HIRING)

Noso Labs Inc.

Full Stack Engineer

San Francisco, CA · On-site

$153 - $207/hr

This is not a standard internship or part-time role, you'll be a core member of the team, writing ... Build full-stack features across our React Native mobile frontend and Python backend, from idea to ...

Krew

Full Stack Engineer

San Francisco, CA · On-site

Required : • 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 ...

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 ...

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 ...

Chemify Ltd

Junior Full Stack Engineer

San Francisco, CA · On-site

$90 - $120/hr

The Role We are seeking a Junior Full Stack Software Engineer to join the team building the ... We expect you to bring: * 0-2 years of software experience (internships, projects, or a strong ...

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 ...

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Full Stack Internship information

What types of projects and technologies can I expect to work with during a full stack internship?

As a Full Stack Intern, you'll typically be involved in both front-end and back-end development tasks, often contributing to real-world projects such as website features, web applications, or internal tools. You can expect to work with modern frameworks like React or Angular for the front end and Node.js, Python, or Java for the back end, along with databases like MongoDB or PostgreSQL. Interns often collaborate closely with senior developers and participate in code reviews, agile sprints, and team meetings, gaining practical experience across the software development lifecycle. This hands-on exposure is designed to develop your technical skills and prepare you for a future full-time role.

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

To thrive as a Full Stack Intern, you need foundational knowledge of front-end and back-end development, proficiency in programming languages like JavaScript, HTML/CSS, and at least one backend language, often demonstrated through coursework or projects. Familiarity with frameworks like React or Angular, databases such as MySQL or MongoDB, and version control systems like Git is typically expected. Strong problem-solving skills, eagerness to learn, and effective communication help interns excel in team-based, fast-paced environments. These skills and qualities are crucial for adapting to diverse tasks and contributing meaningfully to complex software projects.

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Full Stack Internship jobs near you
Infographic showing various Full Stack Internship job openings in California as of August 2026, with employment types broken down into 92% Full Time, 3% Part Time, 4% Contract, and 1% Nights. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution.

Full Stack Engineer

San Francisco, CA • On-site

Noso Labs Inc.
See more jobs at Noso Labs Inc.external

$153 - $207/hr

Other

Posted 10 days ago

Job description

Full-time • San Francisco, CA - Onsite • 6 days a week • $180,000 base + meaningful equity

Founding Software Engineer at NOSO (YC S25).

Before applying
  • We work 6 days a week, and we also work and ping each other in the night.
  • We are in office in SF, and do not have any remote options.
  • We have an extremely high bar on work.
  • We do a lot of customer onsite visits.
  • If you are not okay with any of the above, DO NOT APPLY.
What You Get in Return
  • Huge career growth path
  • Great and super capable colleagues
  • NO BULLSHIT culture
  • Above market pay
The Role

As Founding Software Engineer, you will be our first full-time engineer and play a pivotal role in shaping our product and technology stack from the ground up. You will work closely with the founding team to design and build features end-to-end, bringing new AI-driven capabilities to market. This is not a standard internship or part-time role, you'll be a core member of the team, writing production-quality code and making high-impact decisions from day one.

Key Responsibilities
  • Build full-stack features across our React Native mobile frontend and Python backend, from idea to production
  • Design and integrate LLMs and other AI models into our applications, including data collection, fine-tuning, and deployment
  • Handle enterprise customer data and APIs, build data pipelines to clean, store, and analyze large datasets
  • Test and validate model performance, optimize for efficiency, and ensure reliability at scale
  • Take ownership across the stack, from backend services and database schemas to intuitive mobile UI
  • Work closely with product, AI, and design to turn customer needs into technical solutions
Required Qualifications
  • New Graduate: Bachelor's or Master's in CS, EE, or a related field, graduating in 2025 or 2026
  • GPA of 3.7 or higher
  • Familiarity with ML frameworks like TensorFlow or PyTorch and basic NLP/AI concepts
  • Comfortable with large datasets (Pandas, NumPy) and cloud platforms (AWS, GCP, or Azure)
  • Strong problem-solving and communication skills
  • Passion for AI and impact in the trades industry
Nice to Have
  • Experience deploying ML models at scale
  • Familiarity with enterprise systems and APIs (CRM, dispatch tools)
  • Full-stack or AI projects and internships
  • Interest in HVAC, plumbing, or other field-service domains
  • Startup or hackathon experience
  • $180,000 base + equity
  • Meaningful ownership in the company
  • YC-backed with runway to grow
  • Massive learning opportunity working on AI, full-stack, and cloud with experienced founders
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