Our Firm

Born in 1995 in Liège, Eleftherios STYLIANIDIS holds a Master’s degree in Civil Engineering–Architecture from the University of Liège (2018). He began his career and completed his entire internship at the architecture firm Pierre MAES & Associates. During this time, he took part in a wide variety of projects, ranging from house extensions and full energy-efficient renovations of public housing to industrial halls and other public infrastructures such as hospitals and sports centers.

At the same time, he quickly launched his own practice, developing residential projects that included the transformation of single-family homes and the design of apartment buildings. In 2022, he became a partner and actively engaged in the new venture UMAN architect.

Recently graduated in Architecture from the University of Liège, Lucie LOIX is originally from Geer, a small village in the Hesbaye countryside, where she grew up on a farm, fostering her appreciation for authenticity.

During her Master’s, she developed a passion for repurposing old buildings, giving new life to historically rich spaces while adapting them to contemporary uses. In 2023, Lucie spent time in Italy for an Erasmus program, an experience that greatly enriched her studies both professionally and personally.

In early September, joining ÔME architect was truly a dream come true for her.

Today, she is excited to explore the profession of architecture, learn from the wonderful team she has joined, and help design projects that may become clients’ lifelong dreams.

After graduating as an architect from the Institut Supérieur d’Architecture Saint-Luc in Liège in 1985, Damien HUBLET spent the first twenty years of his career working with various architecture firms in Switzerland, Belgium and the Grand Duchy of Luxembourg.

It was in the latter country that, in 2006, he decided to establish his own practice, Atelier d’Architecture Extenso.

For nearly twenty years, he developed Extenso into a thriving practice, dedicating himself fully to the company alongside his team. Passionate about his profession, Damien places particular importance on the human dimension in all his professional relationships. He is also known for his spontaneity, his sense of humour and his approachable nature, both with his team and his clients.

His commitment to architecture extends beyond his own practice. For almost three years, he has been actively involved with the Order of Architects – Conseil francophone et germanophone. Since January 2026, he has served as Treasurer and as a delegate to the National Council of the Order of Architects and to the French- and German-speaking Council of the Order of Architects.

As a father of three, Damien has always successfully balanced family life with his life as an entrepreneur.

In 2026, after twenty years devoted to Extenso, he decided to pass his practice on to UMAN and to write the next chapter of his story alongside them. Still involved as managing director, he is now helping shape this new adventure with a desire to share his experience, expertise and his warm, humorous approach to human relationships.

Born in 1998 and originally from Liège, Margaux HEINE began her Civil Engineering–Architecture studies at the University of Liège in 2016.

In early 2022, she joined Pierre Maes as a student, and continued her journey with UMAN Architect as an intern. She aims to further her training by pursuing certification as an EPB Manager.

Born in 1979 in Liège, Malik MERBAH holds a Master’s degree in Architecture from the University of Liège (2003), with a specialization in Micro-Architecture. After completing his internships at 3F Architecture, he joined the firm Pierre Maes & Associés Architectes S.A. in 2006, where he worked for several years as a project manager.

During his 16 years at Pierre Maes & Associés, he was able to apply his skills and creativity to the design and realization of a wide variety of ambitious projects including industrial buildings, tertiary and service-sector facilities, apartment and office buildings, police stations, social housing, and private residences. This experience enabled him to master all phases of the architectural process, from initial design through to the final completion of works.

Deeply interested in 3D design, he also possesses strong skills in this field and is eager to refine and expand his expertise toward virtual immersion technologies. While he is highly sensitive to the aesthetic dimension of architecture, he always strives to design functional, high-quality spaces that meet his clients’ expectations.

In January 2022, following the merger of the firms Pierre Maes & Associés, HP, and U’MAN, he joined the new structure UMAN architect.

Graduated from the Institut Victor Horta in Brussels in 2002, Stéphane VERMEIRE immediately began his career as a self-employed architect.

He subsequently collaborated with several architectural firms on a wide range of projects, including residential, public, and industrial buildings.

Building on this diverse experience, he gradually specialized in the execution phase of projects, including tender documentation and site supervision.

In January 2026, he joined the UMAN architect team, where he brings his expertise to ambitious projects.

Graduating with distinction in Architecture from the Institut Supérieur d’Architecture Lambert Lombard in Liège in 1983, Pierre MAES founded the Architecture Office Pierre Maes and Robert Mélotte immediately after completing his studies. He has since worked across a wide range of fields, including residential buildings, industrial facilities, tertiary sector projects, hospital architecture, urban planning and design.

In 1997, focusing primarily on public contracts and industrial projects, he established the firm Pierre MAES & Associés. Deeply interested in architecture and heritage from an early age, he joined the Royal Commission for Monuments, Sites and Excavations in 2001. A registered member of the Order of Architects of Liège since 1983, he has also been registered with the Order of French Architects (Hérault) since 1990.

Passionate about technology and the environment, he contributed to the development of energy performance software and also served as an Archicad beta tester for Graphisoft. Firmly convinced of the importance of multidisciplinary teamwork toward a shared goal, he co-founded the firm UMAN architect in 2021 with his partners and associates.

As an associate architect at UMAN architect, he brings the benefit of nearly 40 years of experience, guiding teams toward the realization of projects that strive for optimal quality. He advocates for constant dialogue and collaboration, key ingredients in the success of any project.

Gwenaëlle SAUR has been working in architecture for more than twenty years, developing an approach that combines creativity, practicality and technical expertise. Over the years, she has been involved in the study, development and delivery of a wide range of projects, with particular attention to the quality of communication and to the collective energy that connects clients, contractors and architects.

Her training in personal development has strengthened her sensitivity to others and to their individuality. It has taught her to listen differently and to adapt to people and situations alike – a valuable quality that she naturally incorporates into the way she works.

For her, placing humanity at the heart of her profession is the strongest bond. She enjoys everything that takes shape throughout a project: ideas, trust and the relationships that develop along the way. It is this deeply human dimension, alongside design and delivery, that gives meaning to her commitment.

Trained as an architect in Brussels, Amandine PAGEAIS is passionate about science, mathematics, and puzzles. Sensitive to art, light, and attentive to detail, she naturally specialized in residential architecture and joined ÔME architect.

Her driving force is sustainable construction, creating spaces that are beautiful, healthy, and breathable. She designs environments that promote well-being and intelligent use, spaces where people enjoy living, even on a rainy Monday morning.

Her own house in the Condroz ? Designed by herself and built during her pregnancy because she enjoys taking on two challenges at once, with the same level of precision and emotion.

Born in 1970 in Liège, Sabine SIMAL earned a secretarial diploma in 1988. After her first professional experience at the GENDARME consultancy office, she joined the Guy PARTHOENS engineering firm, where she further developed her expertise, primarily in the judicial and architectural fields.

In 2005, she joined Contraste Architecture, where she honed her secretarial skills, particularly in the context of architecture, handling tasks such as preparing construction site reports, liaising with various administrations and construction companies, managing schedules, and welcoming clients.

Grégoire DECHÊNE was born in 1979 in Tours, where he began his stone masonry training with the Compagnons du Devoir in 1995. He earned his CAP in 1997 and his CPP in 1999. Over more than 20 years, he honed his craft on numerous construction sites in Belgium and France, culminating in being recognized as a Talent Wallon in 2018.

He worked both on the creation of sculpted works and on the digital drafting (CAD) of these structures. It was his passion for drawing that led him, in 2019, to join Contraste Architecture, where he expanded his skills to include other techniques, such as BIM.

Born in 1977 in Verviers, Pierre PONCELET completed his secondary studies at IATA in Namur and earned a Master’s degree in Architecture from Institut Saint-Luc Liège in 2001, specializing in urban planning.

He began working independently immediately after graduation and, in 2008, partnered with David Hotua to establish HP-Architecture SRL. Active in both private and public projects, the firm grew steadily, bringing together around ten architects by 2020.

Sharing the desire to expand and pool expertise, HP-Architecture collaborated with Contraste and Pierre Maes, culminating in the creation of UMAN architect.

Arnaud DETRO works as a draftsman at UMAN architect.

Born in 1972 in Rocourt, Stefania BERTOJA earned her Architecture diploma from the Institut Supérieur d’Architecture Lambert Lombard in Liège in 1995. Upon completing her studies, she began her career and completed her entire internship at Pierre MAES Architecture. She later became an associate collaborator and Administrator at Pierre Maes & Associés Architectes S.A.

With a strong awareness of space quality, design, and the environment, she has, for over 25 years, managed numerous projects across various sectors, with a particular focus on public contracts. For more than 15 years, she has served as project manager, gaining extensive experience in hospital facilities, commercial buildings, office complexes, and listed heritage buildings, among others.

In 2022, she continued her journey as an Associate Architect at UMAN Architect.

After many years working in construction, Eric LACROIX decided to reorient his career and pursued training as a “Versatile Draftsman in an Engineering Office” at EAFC in Blegny.

Following an initial solo experience in an architecture office, he joined UMAN architect with the goal of joining a team of draftsmen, further developing his skills and leveraging his hands-on knowledge of the field.

Born in 1991 in Woluwé-Saint-Lambert, Julie Miers holds a Master’s degree in Civil Engineering–Architecture from the Catholic University of Louvain, obtained in June 2014.

Born in 1974 in Huy, Sébastien DECKMYN holds a Master’s degree in Architecture from the University of Liège (2000). After completing his internships, he co-founded Contraste Architecture in 2002. From the start of his career, he developed his expertise in both private and public projects.

In 2004, he trained in judicial expertise, a practice he continues to apply regularly. In 2012, he founded SPRL Gdlex, a company focused on technical consulting, which he left in 2018 but continues to collaborate with. In the same year, he became a trainer at the Collège des Experts Architectes de Belgique, where he currently serves as Vice-President.

Registered with the Order of Architects of the Province of Liège, he is also very active in the associative sector and has served as President of the Order of Architects of the Province of Liège since January 2021. As an associate architect, he contributes to the organization of the firm and the development of UMAN architect.

Born in 1997, Thi Mai HANOCQ holds a Master’s degree in Civil Engineering–Architecture from the University of Liège (2020).

After completing part of her internship at a Liège-based architecture firm, where she participated in various types of projects (residential, industrial, etc.), she joined Pierre MAES & Associés Architecture. In 2022, she became part of UMAN Architect.

At the same time, to broaden her expertise, she pursued training to obtain EPB Manager and EPB Certifier certifications.

Driven by a strong passion for both creativity and technical expertise, Stéphanie Maquet chose to study architecture.

Since 2007, she has thrived in creating living spaces, developing innovative technical solutions, and turning constraints into genuine opportunities. For her, each project is a chance to rethink limits and design functional, aesthetic, and sustainable spaces that meet specific needs.

Stéphanie pays special attention to the small details that make a difference, whether in the choice of materials, furniture design, or the search for subtle yet essential technical solutions.

Always eager to grow, she has expanded her skills over the years through training in safety and health coordination as well as building energy performance, subjects now central to her practice.

Today, her thirst for learning has led her to explore new horizons. Viewing architecture as a true team endeavor, Stéphanie joined ÔME Architect, an environment where she collaborates with passionate professionals to continue enriching her vision of architecture.

Born in 1974 in Liège, Fabrizio TENGATTINI holds a Master’s degree in Architecture from the University of Liège (2000). Immediately after graduation, he specialized in public contracts, and his daily deepening of the relevant laws led him to become a trainer for architects.

From 2004 to 2010, he also served as an Assistant Professor at the Haute École de la Province de Liège, where he trained future Construction Bachelor's students in professional practice. His passion for architecture and his profession earned him the Cadet Star in 2009 and the Gold Honor Insignia from the Institut Royal des Elites du Travail in 2016.

He is very active in the associative sector, advocating for his peers, and currently serves as President of the Union Wallonne des Architectes (UWA). As an associate architect, he contributes to all projects, focusing particularly on overall design and project guidelines.

Born in Arlon in 1974 and trained in administration and accounting, her professional career has not quite followed the path her studies initially prepared her for. She began her career in retail, in Belgium and Luxembourg, progressing from sales assistant to assistant manager, then store manager and finally Regional Store Manager. A rich experience that developed her strong interpersonal skills, team spirit, organisational abilities and sense of responsibility.

After several years in retail, the desire for a new balance led her back towards her original field of study. She joined the Swenen architecture practice in Luxembourg, where she worked for five years before continuing her career at Extenso as Office Manager.

The acquisition of Extenso by UMAN now marks a new chapter in her career. She has the opportunity to join the UMAN team and contribute to the development of UMAN’s first office in Luxembourg. She takes on this new challenge with enthusiasm, putting her versatility, experience and organisational skills at the service of the team.

After obtaining his Architecture diploma from Saint Luc Liège in 1997, Emmanuel PIERRET began his internship in the Pays de Herve at the Garsoux and Dethier office.

With six years of diverse experience, he then joined and became a partner at the Artau office in Malmedy, where he had the opportunity to work on large-scale public projects (nursing homes, hospitals, clinics) as well as residential projects.

The 20 years he spent at Artau allowed him to develop extensive knowledge and expertise in project execution and construction site management, with the MontLégia Clinic project as a career highlight.

In 2024, he embraced a new phase of his career by joining UMAN architect.

Born in 1998 in Liège, Manon VANDERSMISSEN holds a Master’s degree in Architecture from the University of Liège (2022).

Immediately after graduation, she joined UMAN Architect to complete her internship, participating in a variety of projects while specializing in public contracts.

Born in Arlon in 1985, Thomas DETAILLE graduated in architecture from the Institut Supérieur d’Architecture Saint-Luc in Liège in 2011.

In 2012, he joined Atelier d’Architecture Extenso, where he developed comprehensive experience across the profession, from design to site supervision, primarily in the residential sector, both in Belgium and Luxembourg.

Over the years, he developed particular expertise in the renovation, transformation and extension of existing buildings – projects he is especially passionate about.

With a keen interest in materials and craftsmanship, he regularly pursues additional training, particularly in woodworking.

In September 2026, he joins UMAN Architect following the integration of Extenso into the practice.

Joining UMAN in 2024, UVAN does not create architecture, draw, or write construction meeting reports.

As Mobility Manager, his role is quite different: he accompanies the team in the field, during team-building events, and on site visits. He can also be found waiting at the bottom of ski slopes or with wheels in the sand and his hood in the sun.

Robust, versatile, and easily recognizable, UVAN is a valuable addition to our team!

Born in 1985 in Libramont, Damien DENIS holds a Master’s degree in Architecture from the Institut Supérieur d’Architecture Lambert Lombard (2009). He began his internships at the A.3 office in Arlon, working on projects of various scales and program types.

Two years later, at Altema, he contributed to the development of public contracts, primarily focusing on execution phases and construction site management. Seeking experience in the single-family housing sector, he joined HP ARCHITECTURE in 2014, where he further developed his creativity.

Today, he is primarily driven by public contract projects and diverse programming. Actively involved in the associative sector, he participated in the founding of UMAN architect in December 2021. As an associate architect, Damien leads the large projects and public contracts team.

Born in 1979 in Namur, David HOTUA holds a Master’s degree in Architecture from the University of Liège (2003). After completing his internships, he worked for several regional offices before partnering with Pierre PONCELET to establish HOTUA+PONCELET ARCHITECTURE in 2008, based in Marche-en-Famenne.

Passionate about the dynamics of development and human synergies, he contributes to the added value of UMAN Architect. Registered with the Order of Architects of the Province of Luxembourg, he is also a strong advocate and representative of the associative and cultural values of his region.

As an associate architect at UMAN architect, he contributes to the firm’s overall vision.

Born in 1995 in Rocourt, Jérémy MOTTARD holds a Bachelor’s degree in Graphic Techniques. Passionate about architecture and interior design, he specialized in 3D architectural rendering during his studies.

Shortly after graduating, he collaborated with several architecture firms across Wallonia before joining UMAN in January 2023.

As a 3D graphic designer, his role is to assist architects, developers, and builders in representing their construction projects through realistic 3D visuals.

Jean-Yves Jehoulet has always aspired to be an architect—he drew his first building at the age of seven! After graduating from Saint-Luc in Liège, he worked at CABANN architectonic’ and AIR-lab before founding his own firm, Jehoulet Architect, in 2012.

Actively involved in the advocacy and representation of the architectural profession, Jean-Yves has been a member of the Order of Architects since 2014. Within the institution, he has held several positions and currently serves as Secretary of the Francophone and Germanophone Council and of the National Council.

In 2024, he co-founded ÔME architect alongside Pierre Monseu Atelier d’Architecture and UMAN architect.

Born in 1978, Marc DEDECKER holds a degree in Automotive Mechanics, obtained in 2000.

Driven by a creative spirit and an interest in architecture and construction, he pursued training in building drawing and construction techniques, a pivotal step that allowed him to combine his technical skills with artistic creativity.

Equipped with these new competencies, Marc joined O2 Architecture in January 2018, where he began learning Building Information Modeling (BIM).

In September 2023, he embraced a new challenge by joining UMAN. With his diverse experience and passion for innovation, Marc continues to push the boundaries of his field daily, leaving his mark on the world of architecture and construction.

Born in 1992 in Liège, Colin CHARLIER studied Communication with a specialization in Journalism at the University of Liège.

After graduating, he worked for six years as a communications officer in professional organizations and as a journalist for the Belga news agency before joining UMAN Architect in January 2024, ready to take on new challenges.

On a daily basis, he is responsible for external communication (website, social media, newsletters, etc.) and the organization of events.

Born in 1987 in Dnipro, Ukraine, Dmytro TERESHCHENKO holds a Master’s degree in Architecture from the Prydniprovska State Academy of Civil Engineering and Architecture (2011).

He began his career working on residential and public projects in Ukraine, where he gradually took on positions of responsibility and led design teams. Over the years, he has collaborated with international firms in the United States, Canada, the United Kingdom, and Switzerland.

After moving to Belgium and settling in Liège in 2022, he pursued a second Master’s degree in Architecture at KU Leuven, which he completed in 2025. During his studies, he worked in an architecture office in Brussels and contributed to projects carried out across Belgium. In November 2025, he joined UMAN architect, where he works in particular on design-related tasks.

His experience includes residential, interior, and public projects, supported by strong expertise in architectural visualization, BIM workflows, and multidisciplinary collaboration.

It is for its diversity and creativity that Joséphine Louis chose to study architecture.

Originally from Namur, she began her studies at the University of Liège. She started her internship at Burnon Architecture, where she worked on various projects and discovered a particular aspect of the profession: heritage, with its challenges of preservation and transmission.

Curious and motivated, she aims to deepen her knowledge and develop her skills across all areas of architecture, while fully committing to teamwork at UMAN architect.

Having completed secondary school in 2019 with a qualification as a construction draftsman, Manon Ipers continued her studies at ULB La Cambre Horta in Brussels. With a particular interest in renovation and heritage buildings, she focused her final thesis on the case of Mirwart Castle.

In 2023, she joined Etienne Burnon’s team for her first internship, which allowed her to deepen her knowledge of heritage. After completing her master’s, she became increasingly passionate about heritage and the rehabilitation of historic buildings.

Today, a trainee architect for one year, she thrives working on renovation and rehabilitation projects as well as on listed buildings within UMAN architect.

As an architect, Morgan Delvaux has been developing a practice informed by diverse approaches to design for over ten years. After gaining experience with Junya Ishigami in Tokyo and Herzog & de Meuron in Basel, she co-founded Laboratoire before joining UMAN architect. Alongside her practice, she teaches at the University of Liège.

Her work explores how architecture can support a world in transition. She sees the territory as a material for design – its landscapes, resources, uses and traces – and architecture as a means of revealing new ways of living, sharing and transforming our environment.

Building on this focus on resources and what already exists, circularity and the ecological transition play a central role in her research. Rather than seeing them as constraints, she considers them levers for reinventing the project: transforming rather than replacing, working with what already exists, using less and using it better, and allowing new spatialities to emerge from these choices. Architectural ambition and environmental responsibility thus contribute to the same goal: creating generous, sustainable places designed with the collective in mind.

This line of thinking also leads her to question the role of the architect and their ability to bring together the many stakeholders who shape our living environment. These questions inform both her teaching and her engagement in the architectural debate, notably as a guest speaker as part of the HouseEurope! initiative.

Deeply attached to Wallonia, her native region, Morgan sees it as a context rich in resources and possibilities, whose evolution she wishes to actively support. For her, the built environment is one of the visible expressions of a society: its quality contributes to the attractiveness of a region, as well as to the sense of belonging of those who live there and their desire to care for it.

Her arrival at UMAN architect is rooted in a shared ambition to give greater prominence to territorial issues, circularity and the ecological transition within the firm’s projects and practices. She intends to contribute actively to this ambition by bringing together her attention to the local context with the experience she has gained and the connections she has built abroad. Her work is thus rooted in Wallonia while opening up new perspectives for reflection and collaboration beyond its borders.