Advanced Frontend Engineering
We turn approved designs into fast, accessible, maintainable interfaces using React and Next.js, matching the design closely and testing across real devices rather than just the browser we built it in.
Who it helps
Agencies needing to outsource complex UI builds, startups building SaaS products, and enterprise teams migrating away from legacy frontend monoliths.
What it solves
Focused implementation for the specific business problems listed below.
Overview
For founders, product teams, and businesses outgrowing spreadsheets or generic SaaS tools.
Scope
Frontend architecture and development. We take approved designs and turn them into a maintained codebase, integrating with your existing backend APIs or headless CMS.
Outcomes
- Close, responsive translation of Figma designs into production code.
- A highly organized, component-based architecture (easy for your team to maintain).
- Sub-second rendering speeds via optimized React/Next.js implementation.
- Strict adherence to web accessibility standards (WCAG).
Cost & Timeline
How much does it cost?
Frontend engineering is typically scoped as part of a larger build or as a dedicated engagement for an existing product. Price depends on the number of components/screens, state management complexity, and performance requirements.
How long does it take?
Timelines vary widely with scope — a focused frontend engagement typically runs 4–10 weeks.
Core Service
Component-Based Architecture (React)
Server-Side Rendering & Static Generation (Next.js)
Responsive, Mobile-First CSS (Tailwind/CSS Modules)
State Management (Zustand/Redux)
API & Headless CMS Integration
Web Accessibility (A11y) Implementation
Optional Add-ons
+ Complex WebGL / Three.js 3D Rendering+ Advanced Framer Motion Micro-Animations+ Progressive Web App (PWA) Configuration+ Frontend Testing (Cypress/Playwright) Setup
The problems we solve
Common reasons businesses choose this service.
The Problems
You have beautiful Figma designs, but your current developers can't build them accurately.
The current website is a tangled mess of jQuery and inline styles that takes months to update.
The UI feels clunky and slow because state management is handled poorly.
You need to decouple your frontend from a slow, monolithic backend (headless migration).
Our Solutions
Component-Based Architecture (React)
Server-Side Rendering & Static Generation (Next.js)
Responsive, Mobile-First CSS (Tailwind/CSS Modules)
State Management (Zustand/Redux)
API & Headless CMS Integration
Web Accessibility (A11y) Implementation
Process
How we deliver this service.
1
Design Handoff & Audit
We review the Figma files, identify any edge cases the designer missed, and define the global design tokens.
2
Component Architecture
Before writing page code, we build a UI library of isolated, reusable components (buttons, cards, forms).
3
Layout & Logic
We construct the pages, implement complex state logic, and handle data fetching from your APIs.
4
Animation & Polish
We add the premium micro-interactions, smooth page transitions, and loading states that make the app feel alive.
5
QA & Accessibility Testing
We test across all major browsers and devices, ensuring screen readers can perfectly navigate the interface.
Use Cases
Common applications.
SaaS Dashboard Build
Building a data-heavy analytics dashboard in React with real-time charting and fast, responsive filtering.
Headless eCommerce Frontend
Replacing a slow Shopify Liquid theme with a fast Next.js frontend connected via the Storefront API.
Marketing Site with WebGL
Developing a highly interactive, award-winning promotional site using Three.js and complex scroll animations.
Recommendations
Related services and next steps.
Recommended technologies
When it is not the right choice
- -Backend database architecture or server management.
- -Creating the actual visual designs (we require finalized Figma/XD files before starting).
- -Fixing legacy WordPress PHP templates.
How this service fits into your roadmap
This engagement is designed to integrate cleanly with your existing codebase, hosting infrastructure, and marketing workflows. Deliverables include complete documentation and technical handover for your internal team.
Related services
Other options in this family.
Connected evidence
Work, case studies, and technologies linked to this service.
Explore technical case studies, architectural guides, and implementation decisions from our production projects related to this service.
Related work
internal
HA UI Design System
Internal design system project focused on reusable components, consistency, and accessibility.
- React
- TypeScript
- Tailwind CSS
Case studies
Technologies
FAQ
Frequently asked questions.
Direct answers to common questions about scope, technical delivery, and project expectations.
Yes — we regularly work within existing React/Next.js codebases rather than starting from scratch.
Frontend engineering is the focus of this service; for full-stack builds, see our custom web application development service.
Ready to discuss advanced frontend engineering?
Start a project conversation or request an audit if you want to talk through the right next step first.