Slow, janky UI that drives users away
A frontend that lags on scroll, stutters on animation or takes three seconds to render the first byte is costing you conversions. Performance is a frontend responsibility, not an infrastructure one.
Frontend Development
Frontend Development Services
We build fast, accessible and polished user interfaces in React, Vue, Next.js and Angular. Component-first, TypeScript-first and tested before it ships, for startups, SaaS products and enterprise teams across the US, UK and Canada.
- React / Vue / Next.js
- TypeScript First
- Core Web Vitals Green
- WCAG Accessible
Signs your frontend needs work
Is your current frontend holding your product back?
If any of these are familiar, the problem is not your product idea or your backend. It is the layer your users actually see and touch.
The built site doesn't match the designs
Pixel-imprecision accumulates. When spacing, colours and typography drift from the Figma file, the final product looks cheap next to the design your team spent weeks approving.
Mobile experience is inconsistent or broken
Building desktop-first and shrinking is not the same as mobile-first design. If touch targets are small, scroll is awkward or layouts collapse badly, most of your users are getting a worse product.
Old JavaScript codebase is a liability
Legacy jQuery, callback spaghetti and zero TypeScript make every change risky and slow. Modernising to React or Vue with TypeScript makes the codebase something a new hire can actually navigate.
No component system or design tokens
Duplicated styles and one-off components mean every new page takes longer to build. A proper component library makes future development faster and keeps the UI consistent.
Accessibility and SEO gaps in the markup
Missing aria labels, bad heading hierarchy and non-semantic HTML hurt screen readers and search engines equally. Accessibility is not optional and should not be retrofitted.
Who we work with
Industries we serve
We have built frontends for SaaS products, FinTech platforms, e-commerce stores and enterprise tools. We learn how your users work before we write the first component.
SaaS Products
FinTech
E-commerce
Healthcare
EdTech
Media
Enterprise
Retail
Startups
Agencies
What we build
Our frontend development services
From a single component library to a full product UI migration, every frontend engagement is scoped, tested and documented before we hand it over.
React Development
Component-based React applications built with hooks, context and modern patterns. Clean, tested and documented so your team can take it forward.
Vue.js Development
Vue 3 single-file components, Pinia state management and the Composition API for frontends that are readable, performant and easy to extend.
Next.js Development
Server-side rendering, static site generation and hybrid rendering from a single Next.js codebase. Fast by default, SEO-friendly by design.
Angular Development
Enterprise Angular applications with strict TypeScript, reactive forms, RxJS and the module architecture that large teams need to work in parallel.
UI Component System Development
A documented library of reusable components with design tokens, Storybook integration and style guides that lock in visual consistency across your product.
Performance & Core Web Vitals
Code splitting, lazy loading, bundle analysis, image optimization and render-blocking elimination to hit green Core Web Vitals scores and keep them there.
Frontend Redesign & Modernization
Migrate from legacy jQuery or Angular 1 to a modern framework while keeping the app live, the data intact and the team productive throughout the process.
Progressive Web App (PWA)
Service workers, manifest files and offline caching that give your web app an installable, app-like experience on any device without the app store.
TypeScript Migration
Incremental migration from JavaScript to TypeScript with full type coverage, strict config and a pattern guide so the whole codebase follows the same standards.
Accessibility Compliance (WCAG 2.1)
Semantic HTML, focus management, keyboard navigation, colour contrast and screen reader testing to meet WCAG 2.1 AA without sacrificing design.
Frontend Testing
Unit tests with Jest, component tests with Testing Library, and end-to-end tests with Cypress or Playwright. Coverage that gives your team confidence to ship.
Frontend Maintenance & Support
Dependency updates, security patches, browser compatibility monitoring and a fast helpdesk to keep your frontend current and stable.
Why choose us
Frontend development done to a higher standard
We treat performance, accessibility and test coverage as requirements, not optional extras. These are the standards behind every frontend we ship.
Start your project-
Framework-agnostic expertise
We work in React, Vue, Next.js and Angular. We recommend what fits the project, not what we happen to know best.
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Performance as a hard requirement
We set performance budgets at the start and enforce them throughout the build. Core Web Vitals are not an afterthought.
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Pixel-perfect from any design tool
Figma, Sketch, Adobe XD, we translate design files to working UIs with exact fidelity to spacing, type and colour.
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Accessible and inclusive by default
Semantic HTML, proper ARIA and keyboard nav are baked into components from the start, not added at the end.
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TypeScript-first approach
We default to TypeScript with strict mode on every new project. Better autocomplete, fewer runtime errors, easier refactoring.
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Tested on real devices
We test across Chrome, Firefox, Safari and real iOS and Android devices before anything goes to staging.
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Component-first architecture
Every project gets a documented component library. New pages are assembled from existing components, not coded from scratch.
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Ongoing frontend support
We stay around for questions, dependency updates and new feature development after the initial engagement.
How we work
Our frontend development process
Eight stages from design review to handover. Each stage produces something you can see and validate before the next begins.
- 01
Discovery
Goals, technical constraints, existing codebase and performance baseline reviewed.
- 02
Design review
Figma files audited for component reuse, edge cases and responsive patterns.
- 03
Architecture
Component hierarchy, state management strategy and folder structure agreed.
- 04
Component build
Components built in isolation with tests and Storybook documentation.
- 05
API integration
Components wired to backend endpoints with error states and loading skeletons.
- 06
Testing & QA
Unit, integration and E2E tests. Cross-browser and device testing.
- 07
Deployment
CI/CD pipeline configured, build optimized and deployment verified.
- 08
Handover
Documentation, component guide and a knowledge transfer session.
What is included
Not all frontend work is the same quality
The difference between a working frontend and a maintainable, performant, accessible one is everything in the list below.
What you get Junior developer Devlon StedyDesk
TypeScript from day one
Performance budgets enforced
Accessible components (WCAG 2.1)
Storybook component documentation
Cross-browser & device testing
Unit and integration tests
Design system tokens integration
SEO-aware rendering strategy
CI/CD pipeline configuration
Post-launch support
Client words
Trusted by product teams that care about quality
They rewrote our React app with TypeScript and proper component architecture. Lighthouse went from 44 to 96. New developers can actually understand the codebase now, which was not the case before.
We hired them for a Next.js build and they delivered in five weeks. Every Figma screen was matched exactly and the app passes our WCAG audit without any additional work.
Our Vue 3 migration had stalled for months with our previous team. They finished it in six weeks, added proper TypeScript and left us with a test suite that actually runs. Huge difference.
Built with proven tools
Our frontend technology stack
We use mature frameworks and proven tooling, not whatever is trending this sprint.
- React
- Vue.js
- Next.js
- Angular
- TypeScript
- JavaScript
- Tailwind CSS
- Sass
- Vite
- Webpack
- Storybook
- Jest
- Cypress
- Playwright
- Figma
Questions, answered
Frontend development FAQs
How much does frontend development cost?
Most frontend projects land between $5,000 and $40,000. A component library or redesign migration sits at the lower end; a full product frontend with testing and documentation sits higher. Every quote is scoped and itemized before we start.
Which frontend framework do you recommend?
It depends on your project and team. React and Next.js suit most product and marketing needs and have the largest hiring pool. Vue is a strong choice for teams that prefer a more opinionated structure. Angular suits large enterprise teams with strict consistency requirements. We recommend based on your context.
Can you work with our existing backend or API?
Yes. We work with REST APIs, GraphQL endpoints and third-party data sources. We review your API contracts early in the project and flag any issues before build begins.
How do you ensure frontend performance?
We set Lighthouse score targets at project start and enforce them. We use code splitting, lazy loading, image optimization, tree shaking and font subsetting as standard, and we audit the bundle before delivery.
Can you migrate our jQuery codebase to React or TypeScript?
Yes. We do incremental migrations, running old and new code side by side so the site stays live throughout. We establish patterns early and work through the codebase systematically rather than doing a risky big-bang rewrite.
Do you build design systems and component libraries?
Yes. We design and build component libraries with design tokens, Storybook documentation, variant coverage and usage guidelines. These become the foundation that makes future development faster and more consistent.
How do you handle accessibility?
We write semantic HTML, use proper ARIA roles and labels, test keyboard navigation and check colour contrast against WCAG 2.1 AA as a standard part of every build. We do not treat accessibility as an optional bolt-on.
Can you work directly from our Figma files?
Yes. We work from Figma as the source of truth. We audit files for completeness before build and flag ambiguous states, missing mobile designs or inconsistent spacing before they become build problems.
How long does frontend development take?
A component library takes 3 to 6 weeks. A full product frontend with testing and CI/CD typically takes 8 to 14 weeks. Timelines depend on scope, design readiness and API availability.
Do you write tests?
Yes. We write unit tests for logic, component tests with Testing Library and end-to-end tests with Cypress or Playwright. Test coverage is agreed at scoping and treated as part of the deliverable, not optional.
Can you help with state management?
Yes. We set up and advise on Redux Toolkit, Zustand, Pinia, Jotai or React Query depending on what your application actually needs. We do not default to complex state management when simpler options are sufficient.
What happens after the frontend launches?
We provide documentation, a component guide and a handover session. Most clients retain us for ongoing development, dependency updates and feature additions on a retainer or time-and-materials basis.
Ready to build a frontend your team is proud of?
Tell us what you need. You will get a straight answer on scope, cost and timeline, usually within one business day.