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Sveltekit Jobs in California (NOW HIRING)

Mill

Senior Full Stack Engineer

San Bruno, CA

React, Vue, Angular, or SvelteKit) -- we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit ...

Mill

Senior Full Stack Engineer

San Bruno, CA · On-site

$185K - $210K/yr

React, Vue, Angular, or SvelteKit) - we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit ...

Mill

Senior Full Stack Engineer

San Bruno, CA · On-site

$185K - $210K/yr

React, Vue, Angular, or SvelteKit) - we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit ...

Mill

Senior Full Stack Engineer

San Bruno, CA · On-site

React, Vue, Angular, or SvelteKit) - we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit ...

Mill

Full Stack Tech Lead - Senior

San Bruno, CA · On-site

React, Vue, Angular, or SvelteKit) - we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit ...

Mill

Full Stack Tech Lead - Senior

San Bruno, CA · On-site

$210K - $250K/yr

React, Vue, Angular, or SvelteKit) - we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit ...

Mill

Full Stack Tech Lead - Senior

San Bruno, CA

React, Vue, Angular, or SvelteKit) -- we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit ...

Krea.ai, Inc

Fullstack Engineer

San Francisco, CA · On-site

Build and maintain APIs and UI flows for web + mobile in Svelte/SvelteKit , TypeScript * Design interactive, responsive front-end experiences-drag-and-drop, real-time canvas polish, smooth and ...

Mill

Full Stack Tech Lead - Senior

San Bruno, CA · On-site

$210K - $250K/yr

React, Vue, Angular, or SvelteKit) - we use SvelteKit at Mill but recognize that strong React/Vue/Angular experience is highly transferable, especially with AI-assisted tooling, so prior SvelteKit ...

Vast

Staff Software Engineer, AI Tooling

Long Beach, CA · On-site

$159K - $226K/yr

Experience with Svelte or SvelteKit * Experience with OpenWebUI or similar open-source AI interface platforms * Experience building or integrating MCP (Model Context Protocol) servers and gateways

Vast

Staff Software Engineer, AI Tooling

Long Beach, CA · On-site

... SvelteKit • Experience with OpenWebUI or similar open-source AI interface platforms • Experience building or integrating MCP (Model Context Protocol) servers and gateways • Experience with LLM ...

Hearst

Senior DevOps Engineer

Los Angeles, CA · On-site

$140K - $179K/yr

Support application and data platform operations involving Java/Groovy Spring Boot, .NET Core/C#, Svelte/SvelteKit, React, TypeScript, MarkLogic, PostgreSQL, Redis, Apache Kafka, Amazon RDS, and ...

Hearst Newspapers

Senior DevOps Engineer

Los Angeles, CA · Remote

$140K - $179K/yr

Support application and data platform operations involving Java/Groovy Spring Boot, .NET Core/C#, Svelte/SvelteKit, React, TypeScript, MarkLogic, PostgreSQL, Redis, Apache Kafka, Amazon RDS, and ...

Hearst Newspapers

Senior DevOps Engineer

Los Angeles, CA · Remote

$140K - $179K/yr

Support application and data platform operations involving Java/Groovy Spring Boot, .NET Core/C#, Svelte/SvelteKit, React, TypeScript, MarkLogic, PostgreSQL, Redis, Apache Kafka, Amazon RDS, and ...

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Sveltekit information

What is SvelteKit?

SvelteKit is a modern framework for building web applications using Svelte, a reactive JavaScript library. It provides a robust set of tools for routing, server-side rendering, static site generation, and more, making it easy to create fast and scalable web apps. SvelteKit streamlines the development process by integrating features like TypeScript support, file-based routing, and seamless deployment options. It's designed to offer an optimized developer experience and improved performance for users.

What are the typical collaboration dynamics for a SvelteKit developer within a cross-functional team?

As a SvelteKit developer, you’ll often collaborate closely with UX/UI designers, backend engineers, and project managers to deliver seamless web applications. Daily responsibilities may include participating in stand-up meetings, integrating frontend components with APIs, and reviewing code with teammates to maintain quality standards. Clear communication and an understanding of the full development lifecycle are vital, as you’ll frequently need to translate design concepts into interactive user experiences while ensuring alignment with backend data flows. This collaborative environment offers valuable learning opportunities and exposure to a variety of technologies, supporting both professional growth and team cohesion.

What are the key skills and qualifications needed to thrive as a SvelteKit developer?

To thrive as a SvelteKit Developer, you need a strong grasp of JavaScript, TypeScript, modern web development principles, and a solid understanding of Svelte and SvelteKit frameworks. Familiarity with version control systems like Git, deployment tools, and RESTful APIs, as well as experience using build tools such as Vite or Rollup, is typically required. Standout soft skills include problem-solving, effective communication, and adaptability to rapidly changing technologies. These skills and qualities are crucial for building efficient, scalable web applications and collaborating effectively within development teams.

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For Sveltekit jobs in California, the most frequently searched job titles are:

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Infographic showing various Sveltekit job openings in California as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Security Software Engineer, Open Source Frameworks

Vercel

San Francisco, CA • On-site, Remote

Full-time

Posted 27 days ago

Job description

About Vercel:
Vercel is the agentic infrastructure company. We free people and agents to ship what's next.
For more than a decade, Vercel has shaped how the web is built. As the team behind Next.js, v0, and AI SDK, we create products that help builders move from idea to production with speed, security, and exceptional developer experience.
Now, software is entering a new era, and the next generation of products will not just be used by people. They will be built, extended, and operated by agents.
We are building the platform for that future, trusted by companies like OpenAI, PayPal, Ramp, Supreme, and millions of developers worldwide. Whether you're building our products, supporting our customers, growing our community, or shaping our story, you'll help define what comes next.
About the role
Vercel builds and maintains a broad portfolio of open source projects that power the modern web, running in millions of applications. Your primary focus will be Turborepo, Nuxt, Svelte/SvelteKit, SWR, Workflow, and Nitro. A single structural fix at the framework level protects every one of those applications at once, which makes this one of the highest-leverage security roles at the company.
We're looking for a security engineer who loves finding a whole class of vulnerability and eliminating it in one move, not someone who's satisfied filing one bug at a time. You'll run deep security assessments of framework internals (routing, middleware, caching, server actions, the build pipeline), find the systemic patterns that produce entire families of bugs, and drive the framework-level fixes and design changes that remove them permanently. You'll also own how these projects handle externally reported vulnerabilities, coordinated disclosure, and CVEs, working directly with maintainers and the open source security community. This includes hands-on ownership of Vercel's open source bug bounty program for these projects: triaging incoming reports, validating and reproducing findings, and driving fixes with the right maintainers.
What you will do
  • Hunt for vulnerability classes, not individual bugs: Run deep security assessments of framework internals (routing, middleware, caching, data fetching, server actions/RSC boundaries, build tooling) to find the systemic design patterns that produce whole families of issues.
  • Drive root-cause framework fixes: Push design changes upstream that eliminate a category of vulnerability across every application built on the framework, rather than patching individual instances as they're reported.
  • Own vulnerability disclosure and CVEs: Triage security reports from the community and researchers across Turborepo, Nuxt, Svelte/SvelteKit, SWR, Workflow, Nitro, and other maintained OSS projects. Coordinate embargoed fixes, write and publish advisories, and manage the CVE/CNA process end to end.
  • Run the OSS bug bounty program for these projects: Own triage and validation of incoming reports to Vercel's open source bug bounty program for Turborepo, Nuxt, Svelte/SvelteKit, SWR, Workflow, and Nitro. Reproduce findings, assess severity, and coordinate fixes with the right maintainers and researchers.
  • Get security into design early: Partner with framework maintainers and core teams during RFCs and design review, so new features ship with security considered from the first draft, not bolted on after a report comes in.
  • Build preventive tooling: Contribute linters, codemods, and CI checks that catch regressions of previously-fixed vulnerability classes before they land again.
  • Own supply chain security for these projects: Harden how dependencies, releases, and published packages for Turborepo, Nuxt, Svelte/SvelteKit, SWR, Workflow, and Nitro are built, signed, and distributed. As more contributions and dependency updates are generated or assisted by AI agents, build the review and provenance practices that keep that increased volume safe.
  • Work with the community, not around it: Engage directly with maintainers, contributors, and external researchers as peers. Bring pragmatic security recommendations to project discussions in a way that respects how these projects actually get built, and represent Vercel in coordinated disclosure norms and working groups when an issue spans multiple ecosystems.
About you
  • You've actually used or broken these frameworks: You've built real things with Turborepo, Nuxt, Svelte/SvelteKit, SWR, Workflow, or Nitro (or closely comparable projects), or you've found and reported security issues in them. This is a hard requirement, not a nice-to-have: we need someone who understands what these projects actually do and how they're actually used, not a generalist parachuting in.
  • You have a deep appreciation and respect for open source work: You understand that these are community projects with maintainers, contributors, and users who care deeply about them, and you treat that with the seriousness it deserves. You're not here to slow the project down with process for its own sake.
  • 4+ years in security engineering, ideally with real hands-on open source contribution experience. You've actually sent PRs to projects like these, not just filed issues against them.
  • You're energized by root cause, not remediation count: Finding the one design flaw that kills fifty potential bugs is more satisfying to you than closing fifty tickets one at a time.
  • You can read framework internals, not just application code: Strong JavaScript/TypeScript fundamentals and genuine familiarity with how modern meta-frameworks work under the hood (routing, SSR/RSC, middleware, bundling/build systems).
  • Pragmatic, not theoretical: You can weigh real-world risk against maintainer and community bandwidth, and land on security improvements that actually ship, rather than the theoretically ideal fix that never gets merged.
  • Vulnerability research chops: Experience with structured security assessment methodology and coordinated/responsible disclosure processes, including handling embargoes and writing clear advisories.
  • Clear communicator: You can explain a vulnerability, a tradeoff, or a design recommendation clearly to maintainers, contributors, and non-security engineers alike, in writing and in conversation.
  • Comfortable operating in public: You're used to working transparently with external researchers, maintainers, and the community, not just inside a company's four walls.
Bonus if you have
  • CVE credits or published security research, especially in JavaScript frameworks or the Node ecosystem.
  • Maintained or heavily contributed to a widely used open source project.
  • Experience with supply chain security tooling (Sigstore, SLSA/provenance, dependency and package scanning).
  • Thought about how increasing AI-agent-authored contributions change the risk model for open source maintenance.
  • Run or triaged for a bug bounty / vulnerability disclosure program before, ideally for open source projects.

Benefits:
  • Competitive compensation package, including equity.
  • Inclusive Healthcare Package.
  • Learn and Grow - we provide mentorship and send you to events that help you build your network and skills.
  • Flexible Time Off.
  • We will provide you the gear you need to do your role, and a WFH budget for you to outfit your space as needed.

The San Francisco, CA base pay range for this role is $208,000.00 - $312,000.00. Actual salary will be based on job-related skills, experience, and location. Compensation outside of San Francisco may be adjusted based on employee location. The total compensation package may include benefits, equity-based compensation, and eligibility for a company bonus or variable pay program depending on the role. Your recruiter can share more details during the hiring process.
Vercel is committed to fostering and empowering an inclusive community within our organization. We do not discriminate on the basis of race, religion, color, gender expression or identity, sexual orientation, national origin, citizenship, age, marital status, veteran status, disability status, or any other characteristic protected by law. Vercel encourages everyone to apply for our available positions, even if they don't necessarily check every box on the job description.

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