Performance improvements for a Start Up.
Oscar is a Denmark-based car rental platform undergoing a phase of expansion to several countries. We worked with them by bringing efficiency with scalable solutions so they could make this move the right way.
The result of this collaboration was a strong reduction of churn, great improvement of the conversion rate and user retention. At the end, it brought a significant amount of sales to the company - supporting Oscar on its expansion strategy with a strong base of loyal and recurrent customers.
As a Design Lead, I worked daily with the Frontend and Backend teams, reported to the C level and had weekly calls with the stakeholders.
My responsibilities included understanding the requirements, maintaining consistency across the project, estimating the execution time, onboarding and assisting team members, reviewing deliverables, improving the process, and communicating with the client.
The product data (recordings, heatmaps, stakeholder calls, etc) showed us:
So how to solve these points effectively?
After gathering knowledge from other departments to have a clear view of what the users looked like, and what they needed, we built a system of benefits for each of them, so we could display exactly what they were looking for.
We prioritized the users strategically, and than designed solutions for each of them.






The result of this collaboration was a strong reduction of churn, great improvement of the conversion rate and user retention, which brought a significant amount of sales to the company - supporting Oscar on its expansion strategy with a strong base of loyal and recurrent customers.
I worked with Marcos on two projects - car rental search and booking process optimization. Marcos is really experienced and he provided good ideas of how to solve customer problems. He is also patient and has a calm attitude. Marcos always puts end-users and customers first. He designed a really smooth user experience for Oscar's search and booking journeys. I definitely recommend Marcos and would be happy to work with him again.

After almost 20 years working on this business, and 12 years running a design company, I learned that I was an obsolete professional and leader after just a few weeks working with Marcos. He made our entire company push it's boundaries a bit further and go to another level. That's how amazing this guy is. Would love to work with him again.

Marcos is exceptional designer and fast learner. His designs were always delivered fast and in great quality. He delivered a very complex feature using a mix of design and vibe coding in a short amount of time and the feature received very positive feedback from our users. He is the designer you need in the AI era, someone who not only has a strong foundation in design, but also knows how to leverage AI, adapt quickly to new technologies, and evolve with the industry.

I had the pleasure of working with Marcos at Subtraid and quickly came to value him as an integral member of the team. He consistently delivered high-quality work with exceptional responsiveness, often producing polished sales presentations on very short notice to support key business initiatives and the company's growth. Beyond his strong work ethic and reliability, Marcos brought a positive attitude and collaborative approach that made him an excellent cultural fit. He was a pleasure to work alongside, and I would confidently recommend him to any organization seeking a talented, dependable, and professional team member.

Working with Marcos at Thr33fold was an excellent experience. He is incredibly creative and talented, especially when it comes to video production and campaign design. His ability to turn ideas into impactful visuals made a big difference in several of our projects. I highly recommend him.

I had the pleasure of hiring Marcos and seeing him grow personally and professionally. A big part of what I like about him is his sensitivity to the people he works with, the people he drafts experiences for, and his overall attitude, which translates into his work - curiosity, and eagerness to design delightful experiences while understanding the why behind them. He would be a great addition to any team, especially if you need a designer with a strong graphic background.

Marcos is a creative, proactive, curious, and supportive person who strives for excellence in whatever he's up to. He's always seeking to learn and trying to find the best solution for the given situation. He is certainly a great addition to any team.

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