Frontend Engineering
Production frontends built on Next.js with zero server lag. We turn designs into blazing-fast, accessible, SEO-ready experiences deployed on the edge.
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Load time
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Lighthouse score
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Cache hit rate
Deliverables
What you walk away with
Every engagement ships with concrete, usable assets — not just advice.
4 deliverables included
Component-driven codebase
Edge deployment setup
Performance & SEO tuning
CI/CD pipeline
How we work
Proven process for this service
Step 1 of 3
Architect
We plan a fast, scalable frontend architecture.
Step 2 of 3
Build
Componentized, tested, and performance-budgeted code.
Step 3 of 3
Ship
Edge deploy with monitoring and CI/CD.
Why Duoplex
Results from development
Next.js, Shadcn & edge-fast builds
End-to-end delivery
Design, engineering, and growth aligned on a single roadmap.
Speed without rework
Tight scopes, weekly ships, and no agency hand-off delays.
Measured in revenue
Every decision is tied to conversion, retention, or spend.
Built to last
Clean systems your team can own long after launch.
“Duoplex rebuilt our entire pipeline — site, automation, and ads. Our spend finally converts, and leads reach sales in under a minute.”
Sara Whitfield
Founder, Halcyon Home
Growth signal
0% rise in follow-ups
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Years shipping digital products
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Brands fully digitized
0x
Avg. conversion lift
0%
Manual ops automated
FAQ
Common questions
What stack do you build with?
Next.js and React with Tailwind and Shadcn UI, deployed to edge platforms like Vercel. It's a modern, widely adopted stack any engineering team can maintain.
Can you migrate our WordPress or legacy site?
Yes. We run staged migrations with full URL mapping and redirects, so you keep your search rankings while gaining a dramatically faster site.
Who owns the code?
You do. The repository, the CI/CD pipeline, and the deployment accounts are all yours from day one — no lock-in.
Do you provide support after launch?
Yes. We offer maintenance retainers covering monitoring, dependency updates, performance checks, and new feature work as you grow.
Ready to start with Frontend Engineering?
Share your goals — we'll outline scope, timeline, and the clearest path to results.