NORTHELL
SYSTEMS OPERATIONAL Start a project →
UI UX DESIGN SERVICES

UI/UX Design Services That Cover Research Through Handoff

Research, structure, and visual design as one connected engagement — not a UX phase handed off to a different UI vendor, losing context at the seam. Tested with real users before engineering builds against it.

Talk to an engineer

BONUS Free: UI/UX Designer Interview Scorecard — 8 portfolio-review criteria plus 5 live-exercise prompts — the same rubric we use to screen every designer we place.

We reply within one business day. No spam, no obligation.

In short: Northell's UI/UX design services cover research, structure, and visual design as one connected engagement instead of two disconnected phases.
CAPABILITIES

What UI/UX Design Covers

User Research

Interviews and usability testing ground both structural and visual decisions in real behavior.

Information Architecture & Flows

Navigation and task flows designed and validated before visual design begins.

Visual & Component Design

A documented component system designed on top of validated structure, not a disconnected UI pass.

Usability Testing & Iteration

Prototypes tested with real users at multiple stages, not just once at the end.

FIT CHECK

Built for Specific Buyers, Not Everyone

Founders Needing Design Before Engineering Starts

Have a product idea and need it designed properly, end to end, before any code gets written.

Product Teams Replacing a Disjointed Design Process

Previously split UX and UI across different people or vendors and felt the seams.

Companies Redesigning an Underperforming Product

Both the structure and the visuals need work, not just one or the other.

If you've already validated UX and just need visual polish, or vice versa, our narrower UI Design or UX Design pages will scope faster than a full combined engagement.

PROCESS

From Kickoff to Launch

01

Research & Discovery

User interviews and, where relevant, existing-product analysis before any screen gets designed.

→ Research findings
02

IA, Flows & Wireframes

Structure validated with users at low fidelity before visual investment begins.

→ Validated wireframes
03

Visual Design

Component system and visual design built on top of validated structure.

→ Visual design system
04

Usability Testing & Handoff

Final prototype tested with users, then delivered as a documented, handoff-ready system.

→ Tested, handoff-ready design
STACK

Technologies We Use

Design Tools
FigmaFigJam
Research
User interviewsMazeUserTesting
System
Design tokensComponent libraries
Handoff
Figma Dev ModeDocumentation
155+ product builds shipped
22% conversion on new-build designs, per our published design-team data
16% conversion lift on existing-product redesigns, per our published design-team data
FAQ

Common Questions About UI/UX Design

Why hire one team for both UX and UI instead of specialists for each?

When UX and UI are designed together, structural decisions and visual decisions inform each other in real time — splitting them across two vendors adds a handoff point where things get lost, similar to splitting front-end and back-end development.

What's the actual process from research to handoff?

User research and information architecture first, then wireframes tested for usability, then visual design and a documented component system — each phase builds on validated decisions from the last, not a guess.

Do you design for web, mobile, or both?

Both — the process is the same regardless of platform, though the platform-specific conventions (responsive web patterns vs. iOS/Android guidelines) differ and get applied accordingly.

Can you design for a product you're not also building?

Yes — design-only engagements are common, delivered as a build-ready handoff your engineering team (internal or another vendor) can implement directly.

How long does a full UI/UX engagement take?

A focused engagement covering research through handoff typically runs 6-10 weeks, depending on screen count and how much research is needed.

Start Your UI/UX Design Project