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Junior Developer Startup Jobs in California (NOW HIRING)

FreedomPay

Jr. Front-End Engineer

San Francisco, CA · On-site

FreedomPay is a product-driven startup transforming the way companies grow their teams. They are seeking a Junior Front-End Engineer to build pioneering local commerce applications and collaborate ...

Stealth Battery Startup

Senior Cell Engineer

San Jose, CA · On-site

$122K - $168K/yr

About the Company We are a stealth-mode battery startup developing cutting-edge battery technology ... Mentor and guide junior engineers and technicians, fostering technical growth and innovation.

Evolver

Senior Python Developer

Palo Alto, CA · Hybrid

$142K - $192K/yr

We are an innovative technology startup focused on transforming professional services through ... Mentorship: Guide and support junior developers to foster technical growth within the team.

Evolver

Senior Python Developer

Palo Alto, CA · On-site

$142K - $192K/yr

We are an innovative technology startup focused on transforming professional services through ... Mentorship: Guide and support junior developers to foster technical growth within the team.

Doppel

Software Engineer, Autopilot

San Francisco, CA · On-site

Doppel is a rapidly growing Series C startup focused on building the future of social engineering ... Mentor junior engineers, foster a high-performing team culture, and shape the team roadmap ...

Coco

Staff Software Engineer, Backend

Venice, CA · On-site

Job Summary : Coco is a venture-backed startup dedicated to perfecting the last-mile delivery ... junior engineers. Responsibilities : • owning and driving products from design to development to ...

Automationtechies

Controls Engineer

Agoura Hills, CA · On-site

$89K - $115K/yr

... startup activities. You'll also collaborate with clients throughout project execution and may lead projects while mentoring junior engineers. Qualifications: * Bachelor's degree in Electrical or ...

Automationtechies

Controls Engineer

Agoura Hills, CA · On-site

$89K - $115K/yr

... startup activities. You'll also collaborate with clients throughout project execution and may lead projects while mentoring junior engineers. Qualifications: * Bachelor's degree in Electrical or ...

Clera

Senior Android Software Engineer

San Francisco, CA · On-site

$160K - $200K/yr

Mentor and provide technical guidance to junior engineers on the Android team * Pragmatically solve complex engineering challenges in a fast-moving startup environment What We're Looking For Required ...

Clera

Senior Android Software Engineer

San Francisco, CA · On-site

$160K - $200K/yr

Mentor and provide technical guidance to junior engineers on the Android team * Pragmatically solve complex engineering challenges in a fast-moving startup environment What We're Looking For Required ...

twenty80.io

Senior Full Stack Software Engineer

Los Angeles, CA · On-site +1

$160K - $210K/yr

  • Medical

  • Dental

  • Vision

  • PTO

Mentor junior engineers and contribute to a strong engineering culture Tech Environment The engineering team works with a modern startup stack, including: * Frontend: React, TypeScript, Next.js

AI Talent Now

Senior Product Engineer

Palo Alto, CA · On-site

$140 - $250/hr

... backed startup, or as founder * Has conducted code reviews and PRs for more junior engineers Education * Degree from top-20 CS program - this is a requirement for those with Technical Skills

Luxus

Senior Electical Engineer (POWER)

Walnut Creek, CA · On-site

$119K - $155K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The ideal candidate will bring deep technical expertise in power engineering, mentor junior ... Lead and participate in field investigations and startup/commissioning activities. * Provide ...

Luxus

Senior Electical Engineer (POWER)

Walnut Creek, CA · Hybrid

$119K - $155K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

The ideal candidate will bring deep technical expertise in power engineering, mentor junior ... Lead and participate in field investigations and startup/commissioning activities. * Provide ...

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All JobsDeveloper Startup JobsJunior Developer Startup JobsJunior Developer Startup Jobs in California

Junior Developer Startup information

See California salary details

$23.7K

$87.8K

$135.7K

How much do junior developer startup jobs pay per year?

As of Aug 15, 2026, the average yearly pay for junior developer startup in California is $87,810.00, according to ZipRecruiter salary data. Most workers in this role earn between $66,100.00 and $85,900.00 per year, depending on experience, location, and employer.

What is a junior developer startup?

A Junior Developer Startup job involves working as an entry-level software developer in a fast-paced startup environment. You'll likely assist in coding, debugging, and testing software while collaborating with a small team. Startups often require developers to be adaptable, learn quickly, and take on various responsibilities beyond coding. This role provides great exposure to modern technologies and agile development practices. It’s a valuable opportunity to grow your skills and gain hands-on experience in a dynamic setting.

What are the key skills and qualifications needed to thrive in the junior developer startup position, and why are they important?

To thrive as a Junior Developer at a startup, you need foundational knowledge of programming languages (such as JavaScript, Python, or Ruby), basic understanding of web development, and a degree in computer science or related experience. Familiarity with source control systems like Git, cloud services, and popular frameworks is important, and participation in coding bootcamps or relevant certifications is a plus. Strong problem-solving, adaptability, and effective communication are key soft skills for collaborating in a dynamic, fast-paced environment. These abilities help junior developers quickly learn, contribute to product development, and grow within the rapidly evolving startup landscape.

What are some common challenges a junior developer may face when working at a startup?

Junior Developers in startup environments often encounter rapid changes in project direction, shifting priorities, and the need to learn new technologies quickly. Unlike more established companies, startups may have less formalized onboarding and training, requiring you to take initiative and learn on the go. You'll likely collaborate closely with small, cross-functional teams, which means communication skills and flexibility are essential. Embracing these challenges can accelerate your growth, expand your technical skill set, and offer opportunities to make a direct, visible impact on the company's products.

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

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

What are popular job titles related to Junior Developer Startup jobs in California?

For Junior Developer Startup jobs in California, the most frequently searched job titles are:

What job categories do people searching Junior Developer Startup jobs in California look for?

The top searched job categories for Junior Developer Startup jobs in California are:

What cities in California are hiring for Junior Developer Startup jobs?

Cities in California with the most Junior Developer Startup job openings:

Junior Developer Startup jobs near you
Infographic showing various Junior Developer Startup job openings in California as of August 2026, with employment types broken down into 100% Full Time. Highlights an 86% In-person, 5% Hybrid, and 9% Remote job distribution, with an average salary of $87,810 per year, or $42.2 per hour.

Junior Software Developer -- Remote

59 Pines

Laguna Beach, CA • Remote

$95K/yr

Part-time

Posted 9 days ago

Job description

We're hiring a Junior Software Developer to join a small, fast-moving engineering team building a consumer-facing web application.

Summary
  • Flexible Title: Can tailor to reflect your skills & experience.
  • Flexible Time: Can do full-time, part-time, side-gig (off-hours), or fractional (contract).
  • Flexible Commitment: Can do short-term, long-term, or intermittent.
  • No degree required. Bootcamp grads, self-taught developers, and career changers welcome.

Why so flexible? We're a FUNDED startup racing to launch end of Q3 2026. That gives us just 3 months to stack features while raising additional working capital. Feel free to jump in, help us ship, then bounce >> or stick around. A successful launch translates into lots of permanent jobs for those that want them. We're also interested in long-term "side gig" relationships, if that's what you're into—in our experience, a few expert hours often beat full-time learning-curve hours.

About Us

We're a credible, funded, remote-first startup backed by a growing team. We're pre-launch and moving fast.

About The Role

We have a working product and a real engineering team — you won't be building alone or guessing what to work on. What we need is another pair of hands who can pick up well-scoped tickets, ship clean code, and grow fast in a codebase that's already structured and documented.

This is a real opportunity to learn from senior engineers in a production environment, not a "junior developer" role where you're actually alone building the whole thing. You'll work on features that real users interact with, get code reviews that teach you something, and have direct access to senior engineers.

Compensation

Up to $95,000 max total annual compensation in Tier 1 cities; cash and equity components to be negotiated. Given the flexible commitment model, comp will be structured accordingly — fractional or hourly arrangements welcome.

What You'll Do in Your First 7 Days
  • You've gotten your local development environment running and submitted your first PR
  • You've reviewed the codebase structure and understand where things live
  • You've attended your first engineering standup and know how the team communicates
  • You've picked up a starter ticket and shipped (or nearly shipped) a small feature or fix
  • The team knows who you are, why you're here, and how you'll work together
What You'll Do Ongoing
  • Build features — pick up tickets, implement them, get them reviewed, ship them
  • Fix bugs — investigate issues, trace them through the stack, and resolve them
  • Write tests — maintain and extend test coverage as you go
  • Participate in code reviews — review others' code and learn from reviews of yours
  • Improve as an engineer — ask questions, pair when stuck, and level up through real production work
What We're Looking For

Must-haves:

  • Solid fundamentals in a modern frontend framework (React, Vue, Angular) and a backend language (Python, Ruby, Node — we'll teach you whichever you're missing)
  • Can read and navigate an existing codebase — you don't need everything explained line by line
  • Understand the basics: version control (Git), REST APIs, relational databases
  • Self-directed learner — you Google before you ask, but you ask before you're stuck for hours
  • Strong async communicator — you write clear PR descriptions and flag blockers early

Nice-to-have:

  • Previous contributions to open source or side projects you can show
  • Bootcamp, CS degree, or self-taught — we care about what you can do, not how you learned it
  • Comfortable in fast-moving, ambiguous environments
What You're NOT
  • Not a solo developer — you'll have senior engineers to learn from and a structured codebase to work in
  • Not a DevOps / infra hire — we have that covered; you're building product features
  • Not expected to be an expert — we're hiring for trajectory, not years of experience

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