Product UI UX Design Services
UI UX Design Services For Products That Actually Have To Ship
Most design work fails somewhere between the presentation and the sprint. The screens look right, then engineering asks what happens when the list is empty, the name is forty characters long or the request times out. We design the whole product, including the parts nobody screenshots.
Triple Protection Guarantee
- US-Registered Entity
- Signed IP Assignment
- Senior Engineers Only
Triple Protection Guarantee:
- US-Registered Entity
- Signed IP Assignment
- Senior Engineers Only
Years In Business
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Engineers On Staff
0
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Avg. Engineer Exp.
0
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Where UX Pays Off
Research First
Not Guesses
Senior Engineers
Vetted Only
Timezone Overlap
Live Hours
Design System
Tokens Built
Delaware LLC
US Entity
Accessibility
WCAG-Aligned
Usability Tests
Real Users
Engineering Handoff
Buildable
Every UI State
Specified
IP Assignment
Signed
Delivery Overlap
Fixed
Hours
Files & IP Owner
You
Trusted By Startups
What Our UI UX Design Services Really Cover
UI design is what the product looks like. UX design is what it is like to use. Product design is the decision about what should exist at all. Buying only the first of those is why so many redesigns change the colours and none of the numbers. Our work runs the whole way through: talk to users, decide the structure, design every state, test it with people who are not you, then hand engineering something they can build without inventing the missing halves.
Stallyons is registered in Delaware as a US company, and our team works a time-zone window agreed before the project starts, with four-plus hours of daily overlap. You sign a US contract, run diligence on a US entity and pay one US invoice. Behind the work sits twelve-plus years of delivery across six continents and around thirty-five engineers, averaging four-plus years of production experience. Designers here sit next to the people who ship the code, which is why the handoff is not a document thrown over a wall.
What A Design Engagement Covers
Research that changes decisions: interviews, session recordings and support tickets read before anyone opens a design file, so the brief is tested rather than restated in a nicer typeface.
Structure before surface: information architecture, navigation and flows agreed while they are still cheap to change, because moving a screen is easier than moving a shipped feature.
A design system, not a folder of screens: tokens for colour, type and spacing, components with real states, and documentation that tells an engineer which one to use and when.
Accessibility designed in: contrast that passes, focus order that makes sense, labels for assistive technology, and motion that respects the reduced-motion setting.
Every state specified: empty, loading, error, permission denied, long text and slow network, so the build has no gaps left for an engineer to guess at later on.
One accountable vendor: one contract, one invoice and one entity for legal and finance to run diligence on, instead of a spread of contractors across four jurisdictions.
Why Product Teams Buy UI UX Design Services Externally
- Ask what research happens before the first screen. If the answer is a competitor sweep and a mood board, you are buying decoration and calling it design.
- Ask to see an error state, an empty state and a form with bad input. Portfolios show the happy path because the happy path is the easy part to draw.
- Ask how engineers receive the work. Tokens, named components and written specs, or a link to a file and a call scheduled for questions later.
- Ask what happens to accessibility. Contrast, focus order and screen-reader labels are decided in design, and retrofitting them after launch costs several times more.
- Check the exit before you need it. The Figma files, the source assets and the system documentation are all in your own account, so leaving is administration.
- Ask who owns the system after handover. A design system nobody maintains drifts back into one-off screens within about two release cycles.
How To Start A Design Project Safely
Every project starts with a free 45-minute scoping session. No slide deck, no sales script. You bring the product, the users and the problem you can see; you leave with a design plan and a timeline.
We are selective about new projects and cap how many we run at once, because the scoping is the product. If what you need is research rather than a redesign, we will say so before you buy one.
Why Clients Choose Us
Full
Written IP Transfer
USA
Contract Entity
Yours
Files & Accounts
Named
Senior Level
Ready for a product your users can actually use?
What Our Designers Deliver
The UI UX Design Services We Deliver
Every product is a different problem, and the underlying jobs repeat: learn what users do, decide the structure, design every state, prove it works and hand it over buildable. These are the pieces we deliver most often.
Product Design Sprints
Discovery, framing, concepts, tests
End-to-End
UX Research Work
Interviews, journeys, insights
Evidence-Led
Design Systems
Tokens, components, documentation
Reusable
Wireframes And Flows
IA, navigation, screen states
Agreed Before UI
UI Screens
Layout, type, colour, imagery
Brand-True
Prototypes & Tests
Clickable flows, user sessions
Validated
Accessibility Design
Contrast, focus, labels, motion
Passes
Mobile App Design
iOS and Android patterns, touch sizing
Thumb-Fit
SaaS & Dashboards
Data density, tables, empty states
Legible Data
Redesign And Uplift
Audit, prioritise, ship in stages
Staged Roll
Not sure where your product loses people? Let us look.
Common Challenges
Why Do UI UX Design Projects Fail?
Six patterns behind almost every redesign that changed the colours and none of the numbers. All six start early.
Pretty Not Usable
01
The work is judged on how it looks in the presentation rather than how it performs in the hands of somebody in a hurry. Nothing is wrong with it, and the drop-off point never moves.
No Research At All
02
The brief is taken as the truth and the design restates it more attractively. Nobody speaks to a user, so the wrong problem is solved very competently.
The Happy Path Only
03
Every screen is drawn with perfect data and a fast connection. Empty, loading, error and long-name states are then invented by whoever builds it.
Handoff Guesswork
04
Engineering receives a file link and a hopeful message. Spacing, breakpoints and component behaviour get decided in the sprint, and the build slowly stops matching the design.
Accessibility Skipped
05
Contrast, focus order and labels are left as a late audit item. The fixes then touch every screen at once, which is precisely when nobody has the budget for it.
No System, Just Screens
06
Four shades of the same grey and three button heights, because each screen was drawn on its own. Consistency then needs a project of its own to restore.
Recognise a few of these? Let us fix them.
Our Design Services
6 UI UX Design Services You Can Buy
Six ways to buy design from one accountable vendor. Run one, or run several in parallel under a single contract.
Product Design Engagement
01
End-to-end design of a product or a major area: research, structure, interface and prototype, with a named lead who reports into you and a plan you approve before work starts.
UX Research & Testing
02
Interviews, usability sessions, card sorting and analytics read together, written up as decisions with evidence attached rather than a deck of interesting observations.
Design System Delivery
03
Tokens, components and usage documentation, built against the framework your engineers actually use, so the library is adopted instead of admired.
SaaS UI UX Design Services
04
Onboarding, permissions, settings, billing screens and dense data tables designed to stay readable as the account grows and the row count stops being polite.
Mobile App UI Design
05
Platform-correct patterns, touch sizing and gestures for iOS and Android, designed alongside our mobile app development team.
Redesign & Accessibility
06
An existing product audited against usability and WCAG criteria, then improved in prioritised stages, so value arrives before the whole redesign is finished.
Not sure which piece you need first? Let us scope it together.
Why Choose Us
What Makes Our UI UX Design Services Different In Practice
The details that decide whether a design survives first contact with engineering.
A US Legal Entity
01
Stallyons is registered in Delaware. Your contract, your invoice and your legal recourse sit with a US company, not an unknown one.
Designed To Be Built
02
Our designers sit beside the engineers who ship. Tokens map to real components, and nothing reaches you that cannot be built as drawn.
Overlap You Set
03
You choose the hours we share with your working day, and stand-ups, reviews and escalations all happen inside that window.
Evidence Over Taste
04
Decisions are argued from interviews, sessions and analytics rather than seniority in the room, and the reasoning is written down where you can read it.
Reviewed Code
05
Every merge is reviewed against an agreed definition of done, on your board, where you can read it yourself.
One Contract
06
One contract covers the engagement, so procurement, legal and finance each deal with a single named counterparty.
Ready to see what proper product design looks like?
Our Process
From First Call To Design Handoff In Six Steps
A design process that settles research, structure and states before any visual work.
Discovery
Understand the users, product and constraints
Scoping
Agree the scope, deliverables and cost
Design
Flows, wireframes and then the interface
Contracting
NDA, IP assignment, access and onboarding
Validate
Prototype, test with users, then revise
Handoff & Build
Specs, tokens and support during build
Want to see how this maps to your roadmap?
Technology Stack
The Toolkit Behind Our UI UX Design Services
The tools we design, research and document in, and the frameworks the work is handed off into.
Design Tools
Figma Libraries
FigJam Boards
Prototype Links
Version Sets
Spec Sheets
Research And Validation
Interviews
Usability Tests
Card Sorting
Surveys
Analytics Review
Design Systems
Design Tokens
Component Set
Storybook Library
Theme Modes
Documentation Site
Accessibility
WCAG 2.1 AA Aim
Contrast AA
Focus Order
Screen Reader Pass
Motion Settings
Build Handoff
React Components
Angular Kits
Vue Components
Tailwind CSS Theming
GitHub Handover
Who We Design For
UI UX Design Services For Every Kind Of Product
Eight kinds of product with different users and one shared need: fewer people giving up halfway through.
SaaS & Web Platforms
Onboarding, billing, settings
Consumer Mobile Products
Onboarding, habits, retention
Healthcare & Clinics
Patient flows, safety, clarity
Fintech & Banking
Trust, verification, statements
Retail And E-Commerce
Browse, checkout, returns, accounts
Education And Learning
Courses, progress, assessment
Operations & Admin
Dense tables, bulk actions
Marketplaces & Portals
Two-sided flows, listings
Working in another sector? See all industries we serve.
How We Compare
Your UI UX Design Services Options, Compared
An honest look at your four delivery options.
| Capability | Freelance Designer | In-House Generalist | Branding Studio | Stallyons Technologies |
|---|---|---|---|---|
| Research before the first screen | If budgeted | No time for it | ✕ Brand workshop only | Interviews and analytics first |
| Empty, loading and error states | On request | Partly drawn | ✕ Not covered | Every state specified |
| Design system with real tokens | ✕ Loose file | Started, unfinished | Style guide only | Tokens, components, docs |
| Accessibility in the design | Sometimes | Late audit | ✕ Not considered | Contrast, focus, labels |
| Dense data and mobile patterns | Depends who | Web habits | ✕ Marketing pages | Tables and touch sizing |
| Handoff engineers can build from | A file link | Same room | ✕ Flat artwork | Specs, tokens, build support |
| File ownership & contracting | ✕ Designer's account | Your own payroll | Varies | US-registered LLC, your files |
See the difference for yourself
Complete Engagement
Everything Included In Your UI UX Design Engagement
From Scoping to Contracting to Delivery, One Vendor
Here is everything included when you design your product with us:
One Design Engagement Price: No Hidden Fees, No Surprises.
Every design engagement includes all eight components above. One contract, one senior team, one predictable cost, and no vendor sprawl.
🔒 No obligation. We'll deliver a detailed proposal within 48 hours.
Plus, Get These Free Bonuses
Free UX Design Review
A written read on where your product loses people, which screens break under real data, and what accessibility would flag, ordered by impact. Yours to keep.
Included Free
Design Plan And Estimate
A phased design plan with scope, milestones, the research it needs and a transparent, itemised estimate for the engagement.
Included Free
Free Vendor Checklist
The questions we would ask any ui ux design agency about research, states, systems and handoff, so you can put us through the same test.
Included Free
Risk-Free Partnership
Our UI UX Design Services Promise
We stand behind every engagement with commitments that protect your investment.
01
Scope Agreed First
Scope, model, working hours and cost structure are written down and agreed before contracting, so nothing is discovered later.
02
Built to Last
Senior developers, code review, automated tests, security and accessibility audits, and clean, documented code you fully own.
03
IP And Access Protected
NDA and IP assignment are signed before access, permissions are scoped per person, and your accounts stay under your control.
Start your design engagement with confidence, backed by our Triple Protection Guarantee.
Track Record
Engagements That Ship, Scale, and Compound
500+
Projects Delivered
29+
Service Categories
81%
Repeat Client Rate
4.9 ★
Clutch Rating
"Stallyons took our Figma design and built it into a live web application, a cognitive game with level-based match play, messaging, a tutorial, and a directory that ranks users nationally. What impressed me most was their grasp of the code behind that logic, and the quality of the experience. Delivered on time with steady updates."
Jerry L.
Founder
PicCiti LLC
"We brought Stallyons in to absorb an overflow of work, and they delivered ten iOS and Android apps, from reporting to geo-location for logistics, plus several backend systems, owning design, development, and app-store submission. Everything stood out: code quality, speed, and reliability. Perfect code, on time, adopted company-wide."
William B.
Director
Amplo Solutions
FAQ
Frequently Asked UI UX Design Questions
UI UX design services cover the whole path from question to buildable interface: research with real users, information architecture and flows, wireframes, the visual interface, a design system of tokens and components, prototypes tested with people outside the team, accessibility decisions, and a handoff engineers can build from without inventing the parts that were never drawn.
UI design is the surface: layout, type, colour, components and the visual language of the interface. UX design is the experience: what the structure is, how someone moves through it, and whether they succeed at what they came to do. Product design sits above both and asks what should exist at all, weighing user need against what the business can build. Buying only UI is the usual reason a redesign changes how a product looks and nothing else.
Cost follows how many flows are in scope, how much research the work actually needs, whether a design system is being built or extended, and how many platforms the work has to serve. Research depth and platform count move it most. We scope first, then price, and itemise what each phase covers so you can cut before you commit rather than after.
Ask to see the unglamorous screens. An error state, an empty state, a form with bad input and a table with two thousand rows will tell you more than any showreel. Then ask how engineers receive the work, and who decides contrast and focus order. A ui ux design company that answers those three clearly is one whose designs tend to survive the sprint.
You do, from the first day. The Figma files, source assets, prototypes and system documentation live in your own account, and NDA and IP assignment are signed before anyone gets access. Everything produced on the engagement is assigned to you outright, with no licence-back.
Yes, and they are different disciplines rather than the same screens at a narrower width. Mobile app ui ux design services here mean platform-correct navigation, touch targets sized for thumbs, gestures, offline and permission states, and layouts that survive a small screen in bright sunlight. We design against iOS and Android conventions, not against one another.
It is part of the design rather than an audit bolted on afterwards. Colour contrast is checked as palettes are chosen, focus order is decided with the layout, form fields get real labels, error messages say what to do next, and motion respects the reduced-motion setting. Our aim is alignment with WCAG 2.1 AA criteria.
Either works. Plenty of clients take the design and build it with their own engineers, which is exactly why the handoff carries tokens, specs and named components. When you would rather one vendor carried it through, the same team can build it as web application development, and the designers stay on through the sprint.
Still have questions? Let's talk.
Schedule an appointment with us today!
Ready To Design A Product People Can Use?
Get a free consultation. We will walk your product, name where users drop off, and send a written proposal.
