Our Team

Heading this fantastic team which lives and breathes the culture behind the restaurant is:

Chef Olivier

Creator of the SEEN concept, Chef Olivier is once again taking on the role of chefpreneur, maintaining the partnership and making this new venue on the rooftop of the Tivoli Avenida Liberdade, the best hotspot in town.

With 22 years’ experience as a chef and where a total of six brands have seen his signature dishes, he is already a benchmark in Portuguese restaurants because of the revolution he instigated and the trends and concepts he started which ensure that every guest enjoys a unique experience when dining By Olivier.

With the evolution in tourism and the restoration of the city’s most central thoroughfare, this chefpreneur brought the Olivier Avenida, a landmark restaurant in the city, to one of the main hotels on Avenida da Liberdade, the former hotel Tivoli Jardim which is today the AVANI Avenida Liberdade.

In the same style as the Olivier Avenida, Chef Olivier also opened Guilty, where guests can try new sensations in salads, hamburgers and pizzas, which he refers to as ‘casual food with a twist’, and K.O.B specialising in dry aged beef.

His restaurant YAKUZA is a statement by Olivier da Costa focusing on innovation and entrepreneurship which quickly brought him the status of successful business person.

With the inauguration of the chic bistrô, the Petit Palais, he opened a new era in the Olivier Group with the introduction of French cuisine combined with a new concept of entertainment, currently exploring the area of events.

In 2017, at the invitation of Tivoli Hotels, a partnership was formed which saw the opening of SEEN São Paulo, which is today one of the best restaurants in this Brazilian city. On the rooftop of the Hotel Mofarrej, with stunning views of the city skyline, you can find a fusion of Chef Olivier’s most iconic dishes with new recipes developed with traditional Brazilian produce.

Thalles Boniatti dos Santos


With traditional Japanese training, Thalles gained his first experience at the legendary restaurant Tsunami in Rio Grande do Sul, Brazil. After coming to Portugal, he demonstrated his talents at Estado Líquido and Romando Privé. Later on, he teamed up with the well-known sushi chefs Aguinaldo and Alex Hatano at Yakuza, part of the Olivier Group.

More recently, and after his time at Yakuza in Lisbon, he took on the position of chef, where he was in also in charge of the kitchen at the Yakuza Restaurant at the Pine Cliffs Hotel.

Thalles has specialised in a more contemporary line, and is the man behind the Sushi menu at SEEN São Paulo, where he presented many of his specialities.

Lucas Jaques

Head Bartender

Lucas, a 27-year-old Brazilian, has trained in classical and tiki cocktails, and started his career at the Tivoli São Paulo Mofarrej in the Must Bar, where he provided back up to the famous Bartender Jéssica Sanchez when their famous cocktail menu was implemented.

Speaking more than seven languages and highly charismatic, Lucas was invited to open the new restaurant concept at the Tivoli São Paulo, and was on the team led by the renowned Head Bartender Heitor Marin. At SEEN São Paulo, he took part in more than 15 guest bartenders events next to some of the most acclaimed professionals, he was also host at the final of the World Class Brazil.

After participating in the MIB Championships – Most Imaginative Bartender by Bombay Sapphire and Chivas Masters Global by Chivas Regal, Lucas was elected as Head Bartender for SEEN Lisboa, where, in addition to designing the cocktail menu, he’ll also be providing the best in Brazilian/international cocktails for Lisbon.

Ricardo Mendes

Restaurant Manager

Ricardo Mendes is also just 27 years old and is the face of SEEN Lisboa.

He holds a degree in architecture, however, he saw his real passion in the world of restaurants and bars, later specialising in “Management and Master Bartending” at the Bols Bartending Academy in Amsterdam.

He started out as Assistant Head Bartender at the Arena Lounge in Lisbon Casino, where he developed his experience in hospitality and bartending. Next up was a new project as Head Bartender at the “Casa de Pasto” restaurant/bar, where he won 3rd place in the “Best Cocktail in Lisbon” competition during Lisbon Cocktail Week, in 2016.

Before arriving at the Tivoli Avenida Liberdade, where he was in charge of the Sky Bar and Lobby Bar, Ricardo also worked in management and training at the Hard Rock Café in Lisbon.

Ivan Muhongo

Executive Chef

At 29 years old, Chef Ivan is at the helm of the kitchen at SEEN Lisboa, consolidating his experience at the Olivier Avenida Restaurant.

Trained in cooking and patisserie at the Santarém School of Hospitality and Tourism, he now has eight years of valuable experience in kitchens at numerous hotels and restaurants including Hotels Real Vila Itália and Santa Eulália, the Sheraton Algarve and Inspira Santa Marta.

He first led a kitchen at the Meson AndaLuz tapas restaurant, where his creativity and innovation gained further recognition.