UX engineering services for UK SaaS products and digital platforms.
Most UX problems are symptoms of something deeper.
A fresh visual design won't fix information architecture that doesn't make sense. Faster pages won't fix navigation people can't follow. New button colours won't help a product that asks too much of users before it gives them anything back.
When a SaaS product has low engagement, high churn or frustrated users, the visible problem is rarely the real one. The real one is usually in how the product is structured, how it asks people to think, and how much it expects of them before they reach the thing they came for.
User experience engineering finds that cause and fixes it. The goal isn't a product that looks better in screenshots. It's a product that's easier for the people who use it every day.
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Does any of this sound familiar?
Users drop off before they reach the core feature you built the product around.
Your support inbox fills up every week with questions the product should answer on its own.
You've already paid for a redesign, and the complaints are still coming in.
Your team dreads sales demos, because the product doesn't show what it can really do.
New users don't get through onboarding without someone holding their hand.
You know something's wrong but can't pin it down, so every fix feels like treating a symptom.
Our UX design services.
SaaS UX audit services
Every engagement starts with an audit. A UX design audit looks at how people actually move through your product: where they stall, where they give up, and what the structure of the product is asking of them. You get a ranked list of what's broken and why before you spend anything on a redesign. Audits start from £800 and take about two weeks.
Redesign grounded in research
Once the audit is done, we redesign the flows causing the most damage first. Every change traces back to a specific finding, so your team can see why each decision was made, not just what changed. That makes the work easy to explain internally and easy to defend to a board.
Front-end rebuild
A design that can't be built is just a file. Our designers work alongside our front-end developers through the build, designing within React and your design system from the start, so the finished product matches the design instead of a compromised version of it.
Complex dashboard, B2B SaaS and AI-driven product UX
Data-heavy products, several user roles and AI features each need their own kind of thinking. Good SaaS UX design for a logistics manager processing forty jobs before lunch looks nothing like a consumer app. We've designed for logistics, HR analytics, property operations and home care.
Scalable design systems
A design system is what lets a product grow without falling apart visually. We build component libraries your team can extend, document properly and hand to a new developer without a briefing session.
What’s in a UX audit.
A focused audit of your main user journey starts from £800 and takes about two weeks. Products with several user roles or platforms are quoted after a short call. Every audit includes the same six parts.
Analytics review
Where users drop off, get stuck or hit errors, if you have analytics in place.
Team interviews
What your support, sales and product people already know about where users struggle.
Usability review
The product checked against established usability principles, screen by screen.
Flow walkthrough
Your key journeys walked step by step, with every friction point annotated.
Accessibility check
The basics of WCAG, so no group of users is locked out.
Ranked findings
What to fix first, with the expected impact and effort for each.
The report is yours to keep, whether or not you go on to the redesign with us.
What we have fixed.
C4 Logistics
Portal redesign across three user types
C4 Logistics runs a time-critical transport platform with three connected portals, for admins, suppliers and customers. Over time each one had become dated, cluttered and slow to use. It started as a request for a visual refresh.
The audit showed the data wasn't the problem. The structure was.
326 screens
Redesigned across three portalsOver 40%
Less time to process a job3 months
From kickoff to launchRetainer
Same team kept on after launch
What we found
- The information architecture was fragmented across 326 screens.
- None of the three portals had a clear structure for calls to action, so users didn't know where to click next.
- Branding was inconsistent, with no shared design system holding it together.
What we did
- We rebuilt the information architecture from scratch, then the navigation, then the interface.
- One sidebar now runs across all three portals, a single design system keeps them consistent, and the whole platform meets WCAG accessibility standards.
How a UX engineering engagement works.
Every engagement starts with the audit, even when the timeline is tight or you already have a theory about what's wrong. The audit is what makes the redesign work. A full engagement, from audit to a rebuilt front end, usually takes 8 to 10 weeks.
Discovery and UX audit
We interview your team, review the product against usability principles, analyse the main flows and go through it screen by screen. We're looking for structural problems, not cosmetic ones.
DELIVERABLES
- UX audit report
- Prioritised findings
- Annotated screen review
Information architecture and wireframes
We fix the structure before we touch the visuals: new navigation, reorganised flows and wireframes that show exactly how the changes will work. This is where the real decisions get made, while they're still cheap to change.
DELIVERABLES
- Revised information architecture
- Low-detail wireframes
- Flow diagrams
UX and UI design
The visual design sits on the new structure and is built from reusable components, so every screen stays consistent. AI tools help us get clickable prototypes in front of your users faster, so we test with real people before anything is built.
DELIVERABLES
- Full UI design
- Interactive prototype
- Design system and component library
Front-end build and QA
Design and engineering run side by side, not one after the other. Our designers test every screen against the flows we agreed in phase 2, checking that it works for the person using it, not just that it looks right.
DELIVERABLES
- A built and tested front end
- A design-to-code review
- Deployment
Many clients then keep the same designer or front-end developer on a monthly retainer. The person who ran the audit stays on the product, so nothing gets lost.
This is not a visual redesign.
What a visual redesign does
What UX engineering does
Most SaaS products that come to us for user experience engineering have already had a visual redesign. It made the product look better, and the support tickets kept coming, because the problem was never visual. If users are still frustrated after a redesign, the problem is structural. That's what we find and fix.
Why UK product teams choose Exline Labs for UX engineering.
We find the real problem, not the visible one
Our UX design consultants treat every audit as an investigation into why users behave the way they do. Each redesign decision traces back to something we found, so you're never paying for changes based on opinion.
Design and engineering work together
Our designers understand front-end code and design within its limits. They know what your components can and can't do, so nothing gets lost between the design file and the finished product.
The same team stays on the product
The people who audit your product are the people who rebuild it. If you keep us on after launch, the same designer and developer stay with your team, so nobody new needs three weeks to catch up.
We come prepared to every call
Before your discovery call, we've already been through your product and noted the obvious friction points. You get observations on the call, not a questionnaire you could have filled in yourself.
What does a UX engineering engagement cost?
It depends on scope. A focused UX audit of your main user journey starts from £800. A full redesign and front-end rebuild across several user roles is a much bigger piece of work, and both start with a discovery call.
What shapes the cost
How many user roles your product has, how many screens are in scope, whether you need design only or a front-end rebuild too, and how tangled the current structure is.
What you get before work starts
Many engagements start with the audit on its own. You decide what to do next once you've seen the findings.
Every month this stays unfixed is costing you.
A product that's hard to use doesn't just frustrate people. It loses them. Churn adds up, support costs rise and sales demos fall flat, and the gap between what your product can do and what users think it can do gets wider every month.
Teams who bring UX problems to us tend to stay, because we find the actual problem, explain what we're doing and why, and deliver something people can use without help. All 15 of our Clutch reviews are verified, and every one is rated 5.0.
If something's broken, the best time to fix it was the last time a user left because of it.
Don't take our word for it.
Germany
Communication was always followed up and deliveries were on time. They were always available for additional help and support. This is not what I experienced with the agency I used before - with Exline I always knew exactly where the project stood.
Christian Mühle
Managing Director of IDEA Data Solutions GmbH
Ready to find out what is actually broken?
Tharsh Thangavadivel
Founder, Exline LabsWe look at your product before the call, so we come with findings, not just questions.
Not ready to call yet?
Tell us about your project.
We reply within one working day.
01
We look at your product and spot where users get stuck.
02
We send you our first observations. No sales pitch.
03
If it looks like a good fit, we suggest a discovery call, with no obligation.
Still have questions?
What is user experience engineering?
It's UX design and front-end engineering done by one team. We find out why users struggle, redesign the flows, then build the fixes ourselves, so the design survives into the finished product. If you only need design, we offer user experience design services on their own too.
How much does a UX audit cost?
A focused audit of your main user journey starts from £800. Products with several user roles, platforms or a large number of screens are quoted after a short call. You get a fixed price before any work starts.
How long does a UX audit take?
About two weeks. We talk to your team, review the product against usability principles and go through it screen by screen. You get a ranked list of findings before you spend anything on a redesign.
What is a UX audit and what does it include?
It's a structured review of how usable and clear your product is. We look at the main user journeys, accessibility and the paths to conversion, and give you a prioritised list of what to fix. Our guide explains what a UX audit includes in more detail.
We already had a redesign. Why are the problems still there?
Because most redesigns change how a product looks, not how it works. If users are still confused, the cause is almost always in the information architecture, the user flows or the logic underneath. That's what an audit finds.
How does UX design increase conversions?
It removes friction, makes the next step obvious and guides people towards the action you want, whether that's signing up, booking a demo or buying. Small structural fixes often move conversion more than a full visual refresh.
What's the difference between UX and UI design?
UX is the whole journey a user takes through your product. UI is how each screen looks and behaves along the way. We do both. Read more about UX vs UI.
Do you work on products another team built?
Yes. Most of the products we work on weren't built by us. We review the existing design and front end before the discovery call, so we understand the constraints before we propose anything.
Do you build scalable design systems for startups?
Yes. We build reusable components with clear documentation, so your product stays consistent as it grows and new developers can pick it up quickly.
Can you design for both mobile and desktop?
Yes. Every design is built to work on small and large screens, and we test it on real devices before it ships.