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Software Engineer Fullstack Jobs in California (NOW HIRING)

About the Role Formal is on a mission to build the best engineering team and we're looking for ... Relevant software development experience building data-intensive software platforms * Strong ...

Software Engineer (Fullstack)

San Francisco, CA ยท On-site

$150K - $210K/yr

We're looking for a highly motivated and experienced Software Engineer to join OneCrew's quickly growing team. You'll play an instrumental role in defining and building out the product and platform ...

We need a full-stack engineer to help build and improve those checkout experiences, from the ... Implements tasks within the Software Development Lifecycle (SDLC), receiving structure and ...

Role Overview We are looking for a Staff Software Engineer - Fullstack to act as a senior technical leader across our engineering organization. This is a high-impact individual contributor role ...

Role Overview We are looking for a Staff Software Engineer - Fullstack to act as a senior technical leader across our engineering organization. This is a high-impact individual contributor role ...

Senior Software Engineer, Fullstack

San Mateo, CA ยท On-site

$242.10K - $293.80K/yr

As a Senior Fullstack Software Engineer on this team, you'll work across both the web platform and its backend, shaping the experience where millions of people first discover and return to Roblox.

Software Engineer, Fullstack

Mountain View, CA ยท On-site

$140K - $265K/yr

Glean is looking for creative engineers to own and launch delightful user facing features. In a rapidly growing startup, this entails developing ideas with product managers and designers to best ...

Software Engineer, Fullstack

Mountain View, CA ยท Hybrid

$140K - $265K/yr

Glean is looking for creative engineers to own and launch delightful user facing features. In a rapidly growing startup, this entails developing ideas with product managers and designers to best ...

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Software Engineer Fullstack information

See California salary details

$42.5K

$142.5K

$197.1K

How much do software engineer fullstack jobs pay per year?

As of May 30, 2026, the average yearly pay for software engineer fullstack in California is $142,522.00, according to ZipRecruiter salary data. Most workers in this role earn between $121,400.00 and $164,900.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Software Engineer Fullstack, and why are they important?

To thrive as a Software Engineer Fullstack, you need strong proficiency in both front-end (e.g., JavaScript, HTML/CSS, frameworks like React or Angular) and back-end (e.g., Node.js, Python, Java, databases) development, typically supported by a degree in computer science or related experience. Familiarity with version control systems like Git, CI/CD pipelines, cloud services, and relevant certifications (such as AWS Certified Developer or similar) is highly beneficial. Effective problem-solving, communication, and teamwork skills help you collaborate across multidisciplinary teams and adapt to evolving project requirements. These combined skills ensure you can build, maintain, and optimize complete web applications that meet both user and business needs.

How does a Fullstack Software Engineer typically collaborate with other team members during a project?

Fullstack Software Engineers often work closely with both frontend and backend specialists, designers, and product managers to deliver end-to-end solutions. They participate in agile ceremonies such as daily stand-ups, sprint planning, and code reviews, ensuring alignment across the development process. Effective communication and cross-functional collaboration are key, as fullstack engineers bridge the gap between user-facing features and backend services. This collaborative environment helps foster continuous learning and exposure to diverse technologies.

What is a Software Engineer Fullstack?

A Software Engineer Fullstack is a professional who develops and maintains both the front-end (client side) and back-end (server side) components of web applications. They are proficient in a range of technologies, including user interface design, server programming, databases, and APIs. This role requires a broad understanding of how web applications work from end to end, enabling them to build complete, functional products. Fullstack engineers are valuable for their versatility and ability to collaborate across different areas of a development project.
Infographic showing various Software Engineer Fullstack job openings in California as of May 2026, with employment types broken down into 87% Full Time, 9% Part Time, and 4% Contract. Highlights an 95% Physical, and 5% Remote job distribution, with an average salary of $142,522 per year, or $68.5 per hour.

Software Engineer | Fullstack

Formal

San Francisco, CA โ€ข On-site

Full-time

Medical, Dental, Vision, PTO

Posted yesterday


Job description

About Formal
Formal is data security platform designed to help teams understand and control their data on autopilot.
We're building a modern protocol-aware reverse-proxy for datastores and APIs that helps organizations understand their data in real-time. This allows teams to see how sensitive data is stored, consumed, and used in order to enforce least privilege through masking, filtering, or anonymization policies.
We are trusted by leading companies such as Ramp, Gusto, Notion to solve problems across data security and compliance, data quality management, and infrastructure access.
Formal is backed by top-tiers VCs including Thrive Capital and Y Combinator with angel investors that include executives and founders from Datadog, Clickhouse, Plaid, and Vanta.
About the Role
Formal is on a mission to build the best engineering team and we're looking for people who want to make outsized impact on shaping the product and building the company.
Our ideal candidate has a deep understanding of building scalable systems, a strong sense of ownership, and enjoys owning projects from inception to scaling it in production.
Our tech stack currently involves Typescript, NextJS, Shadcn, Vercel, and Golang
What you'll do
  • Continuously improve the performance and reliability of our frontend application by optimizing code and identifying areas for enhancement.
  • Enhance existing features by incorporating user feedback and implementing improvements to usability and design.
  • Take ownership of the frontend architecture, ensuring scalability, maintainability, and adherence to best practices.
  • Lead any initiative you think may have a strong impact on Formal.
What You Need
  • Relevant software development experience building data-intensive software platforms
  • Strong expertise in a modern framework (e.g. React, Vue.js) and proficiency with some backend language (we use Go)
  • Experience with streaming data processing frameworks such as Apache Kafka and Google Pub/Sub
  • Some experience with underlying infrastructure primitives like Kubernetes and Terraform
  • Experience in building scalable, responsive, and cross-browser compatible web applications
  • Solid understanding of frontend development principles, including testing, performance optimization, code modularity, and accessibility
  • Strong problem-solving skills and the ability to tackle complex technical challenges with innovative solutions
  • Excellent collaboration and communication skills, with the ability to work effectively in cross-functional teams
Nice-to-Haves
  • Early engineer at a hyper-growth startup.
  • Extensive experience designing applications on Figma
  • Experience contributing to a design framework
  • Experience with UI/UX and product design
Compensation
  • This role offers cash compensation and stock options.
  • The positioning of offers within a certain range depends on various factors, including: candidate experience, qualifications, skills, business requirements, and geographical location.
Benefits (for U.S.-based full-time employees)
  • 100% medical, dental & vision insurance coverage for you
    • Partially covered for your dependents
  • Flexible PTO