Hi, I’m Lucas. Currently, UX designer for e-comm @ Mindcurv – Based in Essen, Germany
See case studies
Cooking voice assistant
Designing conversational user interfaces (CUI)
![Ilustration of Google conversational device closed to a tomato, egg and coriander](https://lucasdacosta.com/wp-content/uploads/2024/03/chet-antonio-conversational-agent.jpg)
Human CAPCHAs
Improving user experience of CAPTCHAS
![](https://lucasdacosta.com/wp-content/uploads/2024/04/Group-119.png)
Sales price calculator
Windows software to support sales with profit
![](https://lucasdacosta.com/wp-content/uploads/2024/04/UX-UI-design-for-software.png)
Virtual cookalong
UXR I Guidelines for virtual meeting Apps
![](https://lucasdacosta.com/wp-content/uploads/2024/04/ux-best-practices-virtual-meeting.png)
E-commerce certificates
Purchase discount certificates for restaurants
![](https://lucasdacosta.com/wp-content/uploads/2024/04/ecommerce-for-restaurnts.png)
Web privacy manager
Web extention to support GDPR rights
![Chrome extension inside a door locker when the data collected by websites can be seen](https://lucasdacosta.com/wp-content/uploads/2024/03/browser-extention-GDPR.jpg)
Group trip planner
Web-app to plan trips collaboratively
![](https://lucasdacosta.com/wp-content/uploads/2024/04/Group-110.png)
Website optimization
Improving products discoverability
![](https://lucasdacosta.com/wp-content/uploads/2024/04/UI-UX-marketing-website.png)
Bar & QRcode reader
Android App to support retail
![](https://lucasdacosta.com/wp-content/uploads/2024/04/android-app-ux-and-ui-design.png)
Free trial sign-up optimization
Reducing cost of trial signups
![](https://lucasdacosta.com/wp-content/uploads/2024/04/trial-conversion-rate-increase-funnel.png)
Cooking voice assistant
Designing conversational user interfaces (CUI)
5 months
Duration
Academic Siegen Uni
Type of project
Remote
Location
5 people
Team
Group trip planner
Web-app to plan trips collaboratively
5 months
Duration
Academic (Siegen Univ)
Type of project
Remote
Location
4 people
Team
What people say about me
“Not only does he deliver quick with a high quality, he understands and takes charge in leading his part of the project in such a manner, that deadlines are essentially never missed...” Read more
Khalil Khandouk @Cisco
Germany, 2022
“I have seen his skills and precision grow since initially hiring him; his work enabled Carnelian Inc. to do more, faster, and pushed us to be better...” Read more
Natalie Leroy @Carnelian
Remote, 2020
“I was particularly impressed by Lucas ability to handle complex design problems and come up with creative and effective solutions...” Read more
Aline Timoteo @UFPE
Brazil, 2008
Some tools that I use
![](https://lucasdacosta.com/wp-content/uploads/2024/03/figma.png)
![](https://lucasdacosta.com/wp-content/uploads/2024/03/jira.png)
![](https://lucasdacosta.com/wp-content/uploads/2024/03/react.png)
![](https://lucasdacosta.com/wp-content/uploads/2024/03/html.png)
![](https://lucasdacosta.com/wp-content/uploads/2024/03/css.png)