MARA

MARA

LEHMANN

LEHMANN

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Industry:

Smart buildings, proptech, b2b and B2B2C marketplace

Role:

First in-house end-to-end product designer (research, design, PRDs, issue/story prioritization)

Internal collaboration with:

CPO, product manager, CTO, BE & FE engineers, customer success, marketing, sales

External collaboration with:

Office space managers, team admins, part-time external UI design consultants

Tools & systems used

Figma, Sketch, Shortcut, Notion, Dovetail, Maze, Mixpanel, and more.

Woman with laptop
Woman with laptop
Woman with laptop
TL;DR

Native app for office space access bookings, and team administration

My role


As the first in-house product designer, I was responsible for the end-to-end design of our native app and took over the designs and the work that had been done by an external design and tech agency.


The product ecosystem included the native app (iOS & Android), internal tooling, and hardware.
I built the design function from the ground up, hired the next UI designer, led two external part-time UI design consultants, and served as the de facto design lead.

Impact


Selected impact of feature work:

  • Designed and shipped a new meeting room check-in feature, reducing no-shows by 50% and significantly improving office space utilization.

  • Redesigned complex phone permission flows and enhanced error handling, cutting customer support contacts by 70%.

challenge.

Unifying ecosystems: Web app, native app, third party & hardware integration


The core challenge was designing for a fragmented ecosystem — not only of tools and data, but also of user roles.


On one side, we had to unify streams from native apps, hardware systems, and third-party integrations into a single source of truth for our customers.


On the other, we needed to account for overlapping but distinct use cases: Tentants who had their regular office and needed the app for access and booking, and Orbit customers who used the app to gain access to the whole network of office spaces.

Woman with laptop
Woman with laptop
Woman with laptop
error handling.

Customers often couldn’t enter a building or room and didn’t know why: Redesigning permissions & error handling

Problem


The original app experience for space access was a primary driver of user frustration and customer support contacts.
The core issue was a system-wide lack of clear feedback. Permissions screens were confusing, and when an unlock failed, there were no clear errors and mitigation options, leaving the user feeling uncertain and powerless.

Solution


Implement a multi-faceted solution for user-empowerment and error mitigation

  1. Redesigned and unified permissions hub

  2. User-facing error states and handling

  3. A new scalable, reusable “info card” component

  4. Updated, more informative icons

Outcome


  • A 70% reduction in support contacts

  • Customer satisfaction increase

Old


The original design suffers from several classic usability issues:

  • Fragmented Experience: The user has to navigate between multiple, separate screens ("Digital key," "Permissions," "Settings") to understand and manage a single concept: their access.

  • High Cognitive Load: The sheer number of toggles, lists, and separate screens creates a confusing and overwhelming experience. It's not immediately clear what the most important information or action is.

  • Unclear Status & Feedback: The UI lacks clear, at-a-glance status indicators, making it difficult for a user to feel confident about their current access permissions.

New



Updated icons and icon states

Updated icons and icon states

Redesigning the “entries” screen for clarity

Old


The problems: The original entries screen was a flat, unorganized list. While functional for a user with only one or two entry points, it was not a scalable solution. As users gained access to more spaces across different buildings and potentially even cities, this single list would become incredibly long and difficult to scan, leading to frustration and wasted time.

New


The solution & rationale: I redesigned the screen with a clear information hierarchy to improve scannability and support users with access to many locations. The new design introduces logical groupings based on proximity ("Nearby") and by building ("Palermo House"), allowing users to quickly find the specific entry they need. This new architecture provides a scalable and much more intuitive experience.


After implementing a “favorite location/base” feature, this screen became even more tailored to each user.

Favoriting a location


Favoriting a location feature expanded: automatically added the related entrances

New


Technical constraint
My preferred interaction would have been that the user’s most used entries appear automatically on top. This was however not possible as we didn’t track individual users’ entry usage. It was something we considered to potentially roll-out at a later stage.

Outcome


Favoriting a location resulted in 80% of users setting one up within the first week, leading to significantly fewer taps when accessing entries and booking spaces.

Redesigning the home screen for clarity and action


Old


The problems: The original home screen had several critical usability issues. Primary actions were hidden in a hamburger menu, reducing discoverability. The main floating button combined "search" and a "scan" feature that had no real-world use case, causing user confusion.

New


The solution & rationale: I redesigned the navigation to be more intuitive and action-oriented.

  1. Bottom navigation: I replaced the hamburger menu with a standard bottom navigation bar, making core features like "Bookings" and "Entries" immediately accessible.

  2. Clear primary CTA: The confusing search/scan button was replaced with a clear "Find space" call-to-action, which better reflected the user's primary goal.

  3. Feature deprecation: We deprecated the unused scan feature, simplifying the experience and removing a point of confusion.

big small things.

Empty states


The empty state was consistent with the ones we used in the new web platform for admins.

More on this case study coming soon!

other work.