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Full Stack Developer Startup Jobs in California (NOW HIRING)

Octasyns

Full-Stack Developer

Emeryville, CA · On-site

Full Time Design & Development Emeryville / On-site Full-Stack Developer We are looking for an experienced Full-Stack Developer to join our team and help us build amazing software solutions using ...

Vianai Systems

Full Stack Developer

Palo Alto, CA · On-site +1

$110K - $160K/yr

As a full-stack developer, you would touch nearly every aspect of our business and work in cross ... We are a startup, and we are founded, funded, and led by veterans of the industry. We think and ...

Vianai Systems

Full Stack Developer

Palo Alto, CA · On-site +1

$110K - $160K/yr

As a full-stack developer, you would touch nearly every aspect of our business and work in cross ... We are a startup, and we are founded, funded, and led by veterans of the industry. We think and ...

Bowhead

Full Stack Developer

Corona, CA · On-site

$95K - $135K/yr

The Full Stack Developer will work directly with the client analyzing complex and unique technical support assignments and lead or collaborate with other system administrators, cybersecurity ...

Synectic Solutions Inc

Full Stack Developer

Norco, CA · On-site

$115K/yr

The Full Stack Developer will work directly with the client analyzing complex and unique technical support assignments and lead or collaborate with other system administrators, cybersecurity ...

Synectic Solutions Inc

Full Stack Developer

Norco, CA · On-site

The Full Stack Developer will work directly with the client analyzing complex and unique technical support assignments and lead or collaborate with other system administrators, cybersecurity ...

Bowhead

Full Stack Developer

Corona, CA

$95K - $135K/yr

The Full Stack Developer will work directly with the client analyzing complex and unique technical support assignments and lead or collaborate with other system administrators, cybersecurity ...

4STAFFING, INC.

Full Stack Developer

San Jose, CA

As a Full Stack Developer, you will be responsible for designing, developing, and maintaining web applications with a focus on both front-end and back-end technologies. You will work collaboratively ...

Info Way Solutions

Full Stack Developer

Fremont, CA · On-site

Info Way Solutions is seeking a Full Stack Developer to join their team. The role requires strong development skills in Java and ReactJS, along with experience in UI development and excellent ...

OpenBrand

Full Stack Developer

San Diego, CA · On-site

Careers Full Stack Developer September 1, 2026 Location: Chicago, IL area -- Hybrid / regular in-person collaboration preferred Company Overview OpenBrand is building the technology and data ...

New

Fincons US

Full Stack Developer

Los Angeles, CA · On-site +1

The Full Stack Developer will be responsible for designing, developing, testing, deploying, and maintaining modern web applications using Python, React, and AWS while collaborating closely with ...

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Showing results 1-20

All JobsFull Stack Developer Startup JobsFull Stack Developer Startup Jobs in California

Full Stack Developer Startup information

What is the difference between Full Stack Developer Startup vs Front End Developer?

AspectFull Stack Developer StartupFront End Developer
Required SkillsProficiency in both front-end and back-end technologies, databases, and server managementSpecialized in client-side technologies like HTML, CSS, JavaScript, and frameworks like React or Angular
Work EnvironmentFast-paced startup setting, often wearing multiple hats, involved in full project lifecyclePrimarily focused on designing and implementing user interfaces and user experience
Common UsageUsed in startups needing versatile developers capable of handling entire applicationsUsed in teams focusing on UI/UX and front-end development within startups or larger companies

In summary, a Full Stack Developer Startup has a broader skill set covering both front-end and back-end development, suitable for dynamic startup environments. A Front End Developer specializes in creating engaging user interfaces, often working within larger teams or specific projects. The choice depends on the scope of work and technical expertise required.

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

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

What cities in California are hiring for Full Stack Developer Startup jobs?

Cities in California with the most Full Stack Developer Startup job openings:

Full Stack Developer Startup jobs near you
Infographic showing various Full Stack Developer Startup job openings in California as of September 2026, with employment types broken down into 1% Internship, 85% Full Time, 8% Part Time, 5% Contract, and 1% Nights. Highlights an 84% Physical, 3% Hybrid, and 13% Remote job distribution.

Full Stack Developer

Redwood City, CA • On-site

SupportFinity™
IT Services • 51 - 200 employees
Learn more about SupportFinity™external

Other

Posted 11 days ago

Key responsibilities

  • Develop dynamic, responsive front-end applications using Angular.

  • Build and maintain Node.js and Express backend services for performance and scalability.

  • Design, implement, and manage RESTful APIs connecting front-end and backend systems.

Job description

About Us

GridCARE solves data center developers' most urgent bottleneck — immediate access to power — through a pioneering physics-based generative AI platform that unlocks gigawatts of near-term capacity from today’s grid. Partnering with utilities, GridCARE applies a proprietary playbook to create additional network capacity on existing transmission infrastructure without costly upgrades or multi-year delays. Founded at Stanford’s Doerr School and backed by leading investors in Energy and AI, GridCARE is working with major technology and data center companies to accelerate interconnection requests for large-load and data center projects.

As a fast-growing startup, we are seeking a skilled Full Stack Developer to help develop data-driven solutions that have real-world impact.

Job Description

We’re seeking a Full Stack Developer experienced in building scalable, high-performance web applications using Angular, Node.js, and REST API. In this role, you’ll architect and maintain APIs, build responsive user interfaces, and collaborate closely with product and data teams to deliver intelligent, user-centered solutions.

You’ll be instrumental in shaping GridCARE’s core web platform — from data visualization tools to backend integrations — ensuring speed, reliability, and exceptional user experience.

This is a unique opportunity to combine AI, data engineering and visualization expertise with cutting-edge AI solutions applied to solve the most impactful speed to power in the energy industry.

Responsibilities
  • Develop dynamic, responsive front-end applications using Angular.
  • Build and maintain Node.js and Express backend services for performance and scalability.
  • Design, implement, and manage RESTful APIs connecting front-end and backend systems.
  • Integrate various data sources and services, including PostgreSQL and cloud-based systems.
  • Write clean, maintainable, and testable code following best practices and team standards.
  • Collaborate with UI/UX designers, product managers, and QA engineers to ensure seamless functionality. Conduct code reviews, improve CI/CD workflows, and support deployment automation.
  • Troubleshoot, optimize, and enhance application performance across the stack.
Qualifications
  • Bachelor’s degree in Computer Science, Software Engineering, or a related field.
  • Proven experience developing full-stack applications with Angular and Node.js.
  • Expertise in JavaScript/TypeScript, HTML5, and CSS3.
  • Strong understanding of REST API design, implementation, and security.
  • Experience with PostgreSQL or other relational databases.
  • Proficiency in Git and familiarity with Agile methodologies.
  • Working knowledge of Docker, CI/CD pipelines, and cloud platforms such as AWS or Azure.
  • Excellent problem-solving, debugging, and communication skills.
Preferred
  • Experience with microservices architecture and distributed systems.
  • Understanding of API security best practices and authentication frameworks.
  • Exposure to DevOps or cloud-native environments.
  • Passion for building high-quality software that powers real-world infrastructure.
What we offer
  • Competitive salary and equity.
  • Comprehensive benefits package.
  • Hybrid work environment with catered lunches and snacks.
  • The chance to work at the intersection of AI, automation, and data systems alongside experienced engineers and leading researchers.
  • A mission-driven team focused on shaping the future of the energy transition.

Join us in tackling one of the most important infrastructure challenges of our time — enabling the energy foundation for the age of AI.

About the company

GridCARE

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