Your numbers are slipping and nobody can agree why?
Fix the Bottlenecks costing you Revenue and Customers
Your product has 2-3 critical friction points costing you money every day. We design a user-tested, developer- ready solution.
/Industry leaders we previously worked with
You Know Something’s Broken. You Just Can’t Get Everyone To Agree What.
The Work
How a design update helped AldiTalk reduce the time for plan change
–16,3%
Support chats/calls about plan selection
-13,8%
Time-to-decision (median, mobile)
2%
ARPU on successful change events
How a design update helped AldiTalk reduce the time for plan change
–16,3%
Support chats/calls about plan selection
-13,8%
Time-to-decision (median, mobile)
2%
ARPU on successful change events
How a design update helped AldiTalk reduce the time for plan change
–16,3%
Support chats/calls about plan selection
-13,8%
Time-to-decision (median, mobile)
2%
ARPU on successful change events
How a design update helped a Motorcycle brand cut support tickets by 41%
–27%
fitment-related returns in targeted categories
–41%
“Will it fit my bike?” support contacts
68%
mobile adoption of “Add your bike” in first 30 days
How a design update helped a Motorcycle brand cut support tickets by 41%
–27%
fitment-related returns in targeted categories
–41%
“Will it fit my bike?” support contacts
68%
mobile adoption of “Add your bike” in first 30 days
How a design update helped a Motorcycle brand cut support tickets by 41%
–27%
fitment-related returns in targeted categories
–41%
“Will it fit my bike?” support contacts
68%
mobile adoption of “Add your bike” in first 30 days
How we reduced the time-to-quote by 42% for a insurance company
-42%
Time-to-quote
–33%
underwriting back-and-forth
+14%
premium per policy
How we reduced the time-to-quote by 42% for a insurance company
-42%
Time-to-quote
–33%
underwriting back-and-forth
+14%
premium per policy
How we reduced the time-to-quote by 42% for a insurance company
-42%
Time-to-quote
–33%
underwriting back-and-forth
+14%
premium per policy
The Solutions
No new headcount, no platform rebuild — just clarity on where you’re losing money and the exact flows to fix first.
We help product and engineering teams ship again.
No new headcount, no platform rebuild — just clarity on where you’re losing money and the exact flows to fix first.
Business Impact Snapshot
You need a fresh, senior pair of eyes that can say, without politics: “This journey keeps customers.”
Business Impact Snapshot
You need a fresh, senior pair of eyes that can say, without politics: “This journey keeps customers.”
Business Impact Snapshot
You need a fresh, senior pair of eyes that can say, without politics: “This journey keeps customers.”
Critical Journeys to Fix First
You Don't Need More Ideas. You Need Measurable Success Criteria.
Critical Journeys to Fix First
You Don't Need More Ideas. You Need Measurable Success Criteria.
Critical Journeys to Fix First
You Don't Need More Ideas. You Need Measurable Success Criteria.
Definition of Success for Each Journey
No more “did we build this feature?” it becomes “did it reduce calls about lost SIM cards by 25%?”
Definition of Success for Each Journey
No more “did we build this feature?” it becomes “did it reduce calls about lost SIM cards by 25%?”
Definition of Success for Each Journey
No more “did we build this feature?” it becomes “did it reduce calls about lost SIM cards by 25%?”
What Has To Change To Hit That KPI?
This is not “the whole product needs love.” It’s: “Fix these 4 choke points first. The rest is cosmetic.”
What Has To Change To Hit That KPI?
This is not “the whole product needs love.” It’s: “Fix these 4 choke points first. The rest is cosmetic.”
What Has To Change To Hit That KPI?
This is not “the whole product needs love.” It’s: “Fix these 4 choke points first. The rest is cosmetic.”
What Happens After The Clarity Review?
If you want fixing those high-value journeys: Embedded UX Delivery Pod – design & repair the full flow end-to-end.
What Happens After The Clarity Review?
If you want fixing those high-value journeys: Embedded UX Delivery Pod – design & repair the full flow end-to-end.
What Happens After The Clarity Review?
If you want fixing those high-value journeys: Embedded UX Delivery Pod – design & repair the full flow end-to-end.
The Process
How We Clear Your Product's Biggest Bottlenecks.
/0
1
2
3
4
Start -> Clarity
We audit your highest-impact user journeys and map where users get stuck, confused, or drop off.
Diagnose -> Design
We define the full flow end-to-end, build the high-fidelity, system-ready prototype and test it with real users.
Outcome -> Ship & Measure
That’s where we support your team through implementation and ensure the spec gets built right. We help instrument key KPIs and provide a 4-week impact review: what changed, what to fix next.
/01
Discover
We start by digging deep, understanding your goals, audience, and challenges. This is where insights surface and opportunities take shape.
/01
Start -> Clarity
We audit your highest-impact user journeys and map where users get stuck, confused, or drop off.
/01
Discover
We start by digging deep, understanding your goals, audience, and challenges. This is where insights surface and opportunities take shape.
/02
Plan
Next we map out a clear strategy, aligning AI solutions with your vision. Every step is designed to solve real problems and unlock growth.
/02
Diagnose -> Design
We define the full flow end-to-end, build the high - fidelity, system-ready prototype and test it with real users.
/02
Plan
Next we map out a clear strategy, aligning AI solutions with your vision. Every step is designed to solve real problems and unlock growth.
/03
Build
Then we bring ideas to life, developing custom AI agents and automations. Each solution is crafted to fit seamlessly into your workflow.
/03
Outcome -> Ship & Measure
That’s where we support your team through implementation and ensure the spec gets built right. We help instrument key KPIs and provide a 4-week impact review: what changed, what to fix next.
/03
Build
Then we bring ideas to life, developing custom AI agents and automations. Each solution is crafted to fit seamlessly into your workflow.
/04
Scale
Finally we refine and expand, tracking results, improving performance, and scaling your AI systems as your business grows.
/04
Scale
Finally we refine and expand, tracking results, improving performance, and scaling your AI systems as your business grows.
„Working with Stephan felt like we had an experienced design partner who truly understood our vision for ALDI TALK and brought it to life."
Matthias Sobania
Brand Manager Aldi Talk
“Engineering lost days per sprint waiting for decisions. The 30-day pod delivered a build-ready spec for submission + payment change – we hit the Q3 release.”
Azzam Rezk
Project Manager Randstadt Digital
"Stephan did a brilliant job of guiding the partner brands through the transformation and ensuring they retained their brand DNA!"
Abhishek Pratap
UX Lead BORN GROUP
„Working with Stephan felt like we had an experienced design partner who truly understood our vision for ALDI TALK and brought it to life."
Matthias Sobania
Brand Manager Aldi Talk
“Engineering lost days per sprint waiting for decisions. The 30-day pod delivered a build-ready spec for submission + payment change – we hit the Q3 release.”
Azzam Rezk
Project Manager Randstadt Digital
"Stephan did a brilliant job of guiding the partner brands through the transformation and ensuring they retained their brand DNA!"
Abhishek Pratap
UX Lead BORN GROUP
„Working with Stephan felt like we had an experienced design partner who truly understood our vision for ALDI TALK and brought it to life."
Matthias Sobania
Brand Manager Aldi Talk
“Engineering lost days per sprint waiting for decisions. The 30-day pod delivered a build-ready spec for submission + payment change – we hit the Q3 release.”
Azzam Rezk
Project Manager Randstadt Digital
"Stephan did a brilliant job of guiding the partner brands through the transformation and ensuring they retained their brand DNA!"
Abhishek Pratap
UX Lead BORN GROUP
Three Ways We Work — Pick What Fits Your Need
Three Ways We Work — Pick What Fits Your Need
Product Clarity Review
Business Impact Snapshot — Where you're leaking money
Business Impact Snapshot — Where you're leaking money
Critical Journeys Identified — The 2-3 flows that matter most
Critical Journeys Identified — The 2-3 flows that matter most
Success Metrics Defined — Clear KPIs per journey
Success Metrics Defined — Clear KPIs per journey
Prioritized Fix List — What to change, in what order, and why
Prioritized Fix List — What to change, in what order, and why
Executive Summary — readout for leadership. Political air cover for your team.
Executive Summary — readout for leadership. Political air cover for your team.
UX Growth Pod
You've identified the broken journey. Now you need it fixed.
You've identified the broken journey. Now you need it fixed.
End-to-end flow definition (all states, edge cases, errors)
End-to-end flow definition (all states, edge cases, errors)
High-fidelity, system-ready prototype
High-fidelity, system-ready prototype
User-tested validation (we test with real users before handoff)
User-tested validation (we test with real users before handoff)
Complete build spec (acceptance criteria, accessibility, responsive behavior)
Complete build spec (acceptance criteria, accessibility, responsive behavior)
Fractional Design Leader
If full design leadership is too early
If full design leadership is too early
If retainers are too expensive
If retainers are too expensive
We review your team's work, improve UX, polish UI, push conversions
We review your team's work, improve UX, polish UI, push conversions
Tools: Loom reviews + Figma + Slack
Tools: Loom reviews + Figma + Slack
Cost: 3000 € / Month
Cost: 3000 € / Month
Product Clarity Review
Business Impact Snapshot — Where you're leaking money
Critical Journeys Identified — The 2-3 flows that matter most
Success Metrics Defined — Clear KPIs per journey
Prioritized Fix List — What to change, in what order, and why
Executive Summary — readout for leadership. Political air cover for your team.
UX Growth Pod
You've identified the broken journey. Now you need it fixed.
End-to-end flow definition (all states, edge cases, errors)
High-fidelity, system-ready prototype
User-tested validation (we test with real users before handoff)
Complete build spec (acceptance criteria, accessibility, responsive behavior)
Fractional Design Leader
If full design leadership is too early
If retainers are too expensive
We review your team's work, improve UX, polish UI, push conversions
Tools: Loom reviews + Figma + Slack
Cost: 3000 € / Month
The Founder
Hi, I'm Stephan. My work has 700K+ App Store ratings, a 4.5 score, multiple 'Award' wins, and reaches 20+ million people everyday.
"Why Bottleneck UX?"
Most product teams are drowning in feature requests. Everyone has an opinion. Nobody can agree on priorities.
The real problem? You've lost sight of the critical paths — the 2-3 journeys that actually drive revenue and retention.
Those journeys have bottlenecks. Small friction points that seem minor but compound into massive losses: onboarding drop-off, support volume, silent churn.
We find those bottlenecks. We measure their impact. We tell you what to fix first.
That's why we're called Bottleneck UX.
Hi, I'm Stephan. My work has 700K+ App Store ratings, a 4.5 score, multiple 'Award' wins, and reaches 20+ million people everyday.
"Why Bottleneck UX?"
Most product teams are drowning in feature requests. Everyone has an opinion. Nobody can agree on priorities.
The real problem? You've lost sight of the critical paths — the 2-3 journeys that actually drive revenue and retention.
Those journeys have bottlenecks. Small friction points that seem minor but compound into massive losses: onboarding drop-off, support volume, silent churn.
We find those bottlenecks. We measure their impact. We tell you what to fix first.
That's why we're called Bottleneck UX.
Hi, I'm Stephan. My work has 700K+ App Store ratings, a 4.5 score, multiple 'Award' wins, and reaches 20+ million people everyday.
"Why Bottleneck UX?"
Most product teams are drowning in feature requests. Everyone has an opinion. Nobody can agree on priorities.
The real problem? You've lost sight of the critical paths — the 2-3 journeys that actually drive revenue and retention.
Those journeys have bottlenecks. Small friction points that seem minor but compound into massive losses: onboarding drop-off, support volume, silent churn.
We find those bottlenecks. We measure their impact. We tell you what to fix first.
That's why we're called Bottleneck UX.
available
Stephan Lucka
CREATIVE DIRECTOR
Hi, I´m Stephan, founder of bottleneck-ux. I ’ve spent 10+ years designing digital products that are simple, smart and built to perform. I’ve worked with brands like Bayer, ALDI TALK, E.ON, Telefonicá, Deichmann, ALDI SÜD, Innogy, HDI, and much more helping them improve UX, boost retention and reach over 100 million users. My work has 700K+ App Store ratings, a 4.5 score, multiple 'Award' wins, and reaches 20+ million people everyday.
available
Stephan Lucka
CREATIVE DIRECTOR
Hi, I´m Stephan, founder of bottleneck-ux. I ’ve spent 10+ years designing digital products that are simple, smart and built to perform. I’ve worked with brands like Bayer, ALDI TALK, E.ON, Telefonicá, Deichmann, ALDI SÜD, Innogy, HDI, and much more helping them improve UX, boost retention and reach over 100 million users. My work has 700K+ App Store ratings, a 4.5 score, multiple 'Award' wins, and reaches 20+ million people everyday.
show bio
available
Stephan Lucka
CREATIVE DIRECTOR
Hi, I´m Stephan, founder of bottleneck-ux. I ’ve spent 10+ years designing digital products that are simple, smart and built to perform. I’ve worked with brands like Bayer, ALDI TALK, E.ON, Telefonicá, Deichmann, ALDI SÜD, Innogy, HDI, and much more helping them improve UX, boost retention and reach over 100 million users. My work has 700K+ App Store ratings, a 4.5 score, multiple 'Award' wins, and reaches 20+ million people everyday.
show bio
What Teams Usually Ask
Do we need to pause our roadmap for this?
No. The Review happens in parallel. We need 3-4 hours of your time max. For the Pod, expect 5-10 hours over 30 days.
What if we want to fix things internally after the Review?
Perfect. The Review gives you everything you need to execute yourself. We only do the Pod if you want senior execution support.
How is this different from hiring a UX contractor?
We're senior practitioners, not junior designers billing hourly. We've shipped at scale. You get clarity and outcomes, not timesheets.
What if we have a designer already?
Great. We work alongside your team. Think of us as the experienced backup that unblocks decisions and prevents thrashing.
How fast can we start?
Usually within 2 weeks. Book a call, we scope the Review, and kick off.
What Teams Usually Ask
Do we need to pause our roadmap for this?
No. The Review happens in parallel. We need 3-4 hours of your time max. For the Pod, expect 5-10 hours over 30 days.
What if we want to fix things internally after the Review?
Perfect. The Review gives you everything you need to execute yourself. We only do the Pod if you want senior execution support.
How is this different from hiring a UX contractor?
We're senior practitioners, not junior designers billing hourly. We've shipped at scale. You get clarity and outcomes, not timesheets.
What if we have a designer already?
Great. We work alongside your team. Think of us as the experienced backup that unblocks decisions and prevents thrashing.
How fast can we start?
Usually within 2 weeks. Book a call, we scope the Review, and kick off.
What Teams Usually Ask
Do we need to pause our roadmap for this?
No. The Review happens in parallel. We need 3-4 hours of your time max. For the Pod, expect 5-10 hours over 30 days.
What if we want to fix things internally after the Review?
Perfect. The Review gives you everything you need to execute yourself. We only do the Pod if you want senior execution support.
How is this different from hiring a UX contractor?
We're senior practitioners, not junior designers billing hourly. We've shipped at scale. You get clarity and outcomes, not timesheets.
What if we have a designer already?
Great. We work alongside your team. Think of us as the experienced backup that unblocks decisions and prevents thrashing.
How fast can we start?
Usually within 2 weeks. Book a call, we scope the Review, and kick off.