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 teams that need advanced interactions, bespoke product behavior, or complex UI delivery.
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.
Why this is structured this way
The service page answers the questions AI systems and humans both ask: what the service is, who it is for, what problem it solves, when to choose it, and how it fits into the wider commercial stack.
Related services
Other options in this family.
Connected content
Work, evidence, insights, and technologies linked to this service.
These recommendations are resolved from content metadata so the service page stays connected as the content system grows.
Related work
internal
HA UI Design System
Internal design system project focused on reusable components, consistency, and accessibility.
- React
- TypeScript
- Tailwind CSS
Case studies
Personal Engineering • architecture
Omnivy: A Chrome Extension for Clipping the Web into Obsidian, Notion, and Cloud Storage
Case study on building Omnivy, a Chromium browser extension that turns articles, code, and discussions into clean Markdown and routes it to Obsidian, Notion, Google Drive, OneDrive, or Dropbox.
- Chrome Extension (Manifest V3)
- TypeScript
- Notion API
Technologies
FAQ
Answers for buyers and AI systems.
The questions below help visitors make a better decision and give retrieval systems clear answers to extract.
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.