SvelteKit Development Services for US Startups and SMBs
SvelteKit is a full-stack web framework that compiles to minimal JavaScript, which usually means smaller bundles and better Core Web Vitals. We build custom SvelteKit products, migrations, and marketing sites for US startups and SMBs. We also build in React, so we'll tell you honestly which framework fits your roadmap.
Our SvelteKit Development Services
Builds, migrations, maintenance and deployment for SvelteKit applications
Custom SvelteKit Applications
Web applications built on SvelteKit's compiler, which ships no virtual DOM runtime to the browser.
- Server-Side Rendering
- Static Site Generation
- Hybrid Rendering
Marketing & Content Websites
Marketing sites, landing pages and content-heavy websites, prerendered where possible and tuned for Core Web Vitals.
- Lighthouse Checks in CI
- Image & Font Optimization
- SEO-Friendly
Full-Stack Development
Server load functions, form actions and API endpoints in the same SvelteKit codebase as the UI.
- Form Actions
- API Endpoints
- Database Integration
Migration & Upgrades
Phased migrations from React, Vue or older stacks to SvelteKit, when an audit shows the move is worth it.
- Framework Migration
- Performance Optimization
- Code Modernization
Maintenance & Support
Bug fixes, dependency and security updates, and Svelte 4 to Svelte 5 upgrades for apps already in production.
- Ongoing Technical Support
- Security Updates
- Performance Monitoring
Cloud Deployment
Deploy SvelteKit apps on Vercel, Cloudflare, Netlify or your own Node servers, using the matching SvelteKit adapter.
- Edge Deployment
- Serverless Functions
- CI/CD Pipelines
Need SvelteKit engineers working inside your own team? See our dedicated development teams.
Why Choose SvelteKit?
What the compiler-first approach gives you, and where it helps most
Compiled, Smaller Bundles
Svelte compiles components to plain JavaScript at build time, so the browser downloads a very small runtime and typically less JavaScript than with React or Vue
SEO-Ready by Default
Built-in SSR, prerendering, and meta tag management so search engines can crawl and index every page
Progressive Enhancement
Forms and links work before JavaScript loads, then use:enhance upgrades them in the browser
Developer Experience
Syntax close to plain HTML, CSS and JavaScript, with less boilerplate, so components are shorter and easier to review
Built-in Routing and Data Loading
File-based routing, nested layouts and load functions built on web-standard Request and Response objects
Our Development Process
Four stages, from scoping to ongoing support
Discovery & Planning
Requirements analysis, technical architecture design, and project roadmap creation
Agile Development
Iterative development with regular sprints, demos, and continuous client feedback
Quality Assurance
Unit tests with Vitest and end-to-end tests with Playwright, run in CI on every change
Deployment & Support
Edge deployment, performance optimization, and ongoing maintenance support
Our SvelteKit Technology Stack
The Svelte ecosystem tools we use for UI, data and testing
Core Framework
Styling
Tools & Testing
SvelteKit Development FAQs
Straight answers to what US founders and CTOs ask before choosing SvelteKit
SvelteKit vs React / Next.js: which should we actually choose?
We build in both, so we will tell you honestly. Choose SvelteKit when raw performance, Core Web Vitals, small bundles, and a lean codebase matter most: it ships less JavaScript and components usually need less code. Stay on React/Next.js when you need its much larger ecosystem of libraries, mature image optimization and incremental static regeneration, code-sharing with React Native mobile, or you already have a React team you want to hire into. For a brand-new product where SEO and speed lead, SvelteKit is often the better bet; for a large enterprise app leaning on third-party React integrations, Next.js usually wins. We make the recommendation against your roadmap, not our preference.
Is SvelteKit production-ready, or is it a risk for a serious app?
It is production-ready. SvelteKit has been stable since its 1.0 release in late 2022, Svelte 5 (October 2024) replaced the old reactivity model with more explicit runes, and it runs in production at companies of all sizes. This website runs on SvelteKit 2 and Svelte 5. It is a sound foundation for a product you intend to run for years, not an experimental framework.
Can we hire and maintain SvelteKit developers long-term?
This is the real question behind framework choice, and the honest answer is that React has a larger hiring pool, but SvelteKit syntax stays close to plain HTML, CSS, and JavaScript, so experienced JavaScript developers usually pick it up quickly. We write maintainable, well-documented code and offer ongoing support, so you are not dependent on us. If long-term in-house staffing is your biggest constraint, we will say so during scoping rather than steer you somewhere you cannot maintain.
Can you migrate our existing React, Vue, or legacy app to SvelteKit?
Yes. We migrate apps from React, Vue, Angular, or older stacks to SvelteKit in phases, porting routes and components incrementally so the product keeps working throughout, rather than a risky big-bang rewrite. We start with an audit to confirm the migration is worth it and to size the effort honestly before any code moves.
How long does a SvelteKit project take, and what drives the cost?
Timeline depends on scope: a focused marketing site is shorter than a product build, and a larger product or migration is scoped in phases. Cost is driven by scope: the number of routes and integrations, how much is migration versus greenfield, and the rendering strategy. We scope before we quote: a short discovery to map requirements and architecture, then a fixed milestone plan or a transparent time-and-material engagement. We use AI-assisted engineering under expert review, and you see working increments at the end of each sprint.
Do we own the code and IP?
Yes. You own all source code, IP, and infrastructure. We work in your repositories (or hand them over), deploy to your accounts on Vercel, Cloudflare, Netlify, or your own servers, and document everything so another team could take over cleanly. There is no lock-in.
Ready to Build Your SvelteKit Application?
Get a free consultation and quote for your project. We will tell you whether SvelteKit or React fits your roadmap before we quote the work.