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Junior Developer Startup Jobs in California (NOW HIRING)

... junior IT engineers and team members Company : We're a stealth-mode battery startup. Founded in , the company is headquartered in San Francisco Bay Area , CA , US, , with a team of 11-50 employees.

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.

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 ...

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.

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 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 ...

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 ...

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 ...

Staff iOS Engineer

San Diego, CA · On-site

$188K - $255K/yr

Our 40 years of expertise have rooted us in the startup mentality, positively disrupting ourselves ... Coach and mentor junior engineers on best practices of software engineering, leveraging AI to ...

Senior Electical Engineer (POWER)

Walnut Creek, CA · On-site

$119K - $155K/yr

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

Senior Electical Engineer (POWER)

Walnut Creek, CA · Hybrid

$119K - $155K/yr

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

Senior Electical Engineer (POWER)

Walnut Creek, CA · Hybrid

$119K - $155K/yr

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

... team. • Mentor junior engineers and contribute to a culture of technical excellence ... Go, GRPC, Kubernetes, React, Typescript, AWS and Terraform. • Early-stage experience at a startup ...

... team. • Mentor junior engineers and contribute to a culture of technical excellence ... Typescript, GRPC, Go, Kubernetes, React, AWS and Terraform. • Early-stage experience at a startup ...

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Showing results 1-20

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 Jul 24, 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 job?

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 cities in California are hiring for Junior Developer Startup jobs? Cities in California with the most Junior Developer Startup job openings:
Infographic showing various Junior Developer Startup job openings in California as of July 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $87,810 per year, or $42.2 per hour.

Full-time

Posted 28 days ago


Job description

Job Summary:
Stealth Battery Startup is a company focused on developing cutting-edge battery technology to promote clean energy. They are seeking a Senior IT Engineer to manage productivity tools and optimize the internal technology ecosystem, directly impacting employee experience and operational efficiency.
Responsibilities:
• Administer and support tools like Slack, Jira, Confluence, Google Workspace, Microsoft 365, and other business-critical applications
• Troubleshoot end-user issues across SaaS platforms
• Manage user provisioning and access audits
• Identify opportunities to streamline workflows and reduce manual tasks
• Implement and validate cross application integrations
• Evaluate new SaaS tools and assist with onboarding
• Maintain IT documentation and knowledge base articles
• Collaborate with network and security engineers to ensure compliance
• Participate in IT projects, rollouts, and cross-functional initiatives
Qualifications:
Required:
• 5+ years in IT support, systems administration, or operations
• Experience in Microsoft 365 and Google Workspace administration
• Exposure to scripting languages (PowerShell, Bash, Python, etc.) and automation
• Familiarity with IAM platforms (Okta, Entra ID, Google Identity)
• Experience supporting SaaS tools like Slack, Jira, Confluence, Zoom
• Excellent troubleshooting, communication, and documentation skills
• Experience mentoring junior IT engineers and team members
Company:
We're a stealth-mode battery startup. Founded in , the company is headquartered in San Francisco Bay Area , CA , US, , with a team of 11-50 employees. The company is currently Early Stage.