Sonnesgade 11, 1
8000 Aarhus C
0045 3211 1001

SLETH Copenhagen

Orientkaj 4
2150 Nordhavn
0045 3213 1001

Jobs & internships

SLETH is a company in constant development that is always looking for talented people. We emphasize courage, creativity, curiosity and professionalism. To apply for a job or an internship, briefly describe your motivation and why we need you. Remember to specify which position and office you’re applying for in the subject line. Attach your portfolio and send your applications  to

Note: We only accept portfolios, resumes, motivational letters etc. as PDF files. For potential new interns, we encourage you to specify your desired start-up date. Be aware that we store applications for a period of up to 3 months.


Rasmus Therkildsen,
CEO, Partner, Architect MAA, 0045 3088 1001

Søren Leth,
CCO, Partner, Architect MAA MDL, 0045 2711 1990

Pi Aasbjerg Hansen,
CVO, Strategy and Development 0045 2920 2990

Lars Jensen,
Team Leader CPH, Architect MAA, 0045 3048 0001


Josefine Broe Malm,
Office Assistant 0045 3211 1001

Press- and business inquiries:
Mathias Skafte Andersen

Allan Edmond Hansen,
Architect MAA, 0045 2681 4237

Andreas Gotthelf Kristensen,
Architect, cand.arch., 0045 2920 2972

Astrid Linding Pedersen,
Architectural Intern,

Clara Kristine Guldbrandsen (ON LEAVE)
Landscape Architect, cand. arch, MDL 0045 2920 2976

Flemming Tanghus
Architect MAA, 0045 2920 2994

Haris Hasanbegovic
Architect MAA, 0045 2920 2970

Hans Bruun Olesen
Architect, 0045 2920 2971

Henrik Villefrance
Constructing Architect MAK,, 0045 2920 2992

Irene Blak Wilner
Architect cand.arch, 0045 2920 2987

Jacek Cezary Rymaszewski
Architect MAA, 3D Specialist

Jens Bager,
Architect MAA, 0045 2920 2984

Line Østergaard Præst,
Architect, cand.arch 0045 2920 2983

Magnus Oved Særkjær
Architect, cand.arch, 0045 2920 2993

Mathias Skafte Andersen,
Architect MAA/Graphic Designer, 0045 2920 2996

Mathias Ørntoft
Architect MAA, 0045 2920 2997

Mathilde Ballegaard Lehrmann
Architect, cand.arch 0045 2920 2978

Marie Wacher Rødbro
Landscape Architect MAA MDL,, 0045 2920 2977

Mike Højrup Brandt,
Architect, cand.arch, 0045 2920 2974

Nanna Østergaard Christensen (ON LEAVE)
Architect MAA, 0045 2920 2986

Niels Eli Kjær Thomsen,
Architect MAA, 0045 2920 2995

Sine Hvid Byriel,
Architectural Intern,

Søren Chr. Madsen,
Architect MAA, 0045 3136 9442


SLETH was founded in 2009 by partners and architects Søren Leth and Rasmus Therkildsen. With roots in the industrial South Harbor of Aarhus, Denmark, SLETH has evolved into a transdisciplinary and diverse studio employing around 30 talented people with a wide range of professional backgrounds in its Aarhus and Copenhagen offices.

In 2016 SLETH moved into our current Aarhus location, Sonnesgade 11. The building, which is both designed and owned by SLETH, embodies the office’s unique approach to architecture, sustainability, and urban design. Our Copenhagen office is located within COBE, a long time collaborator, in Pakhus 54 in the North Harbour.

SLETH has gained more than 10 years of experience in dealing with complex planning cases, since winning the open international competition for the masterplan of the North Harbour, Copenhagen. We act as advisors, architects and planners for private and municipal clients – both national and international – to secure sustainable and liveable urban environments for cities to grow in. We work holistically with the urban scale, offering consultancy on local-, municipal-, master-, and development planning as well as design and detailing of specific urban spaces and elements.


Sustainable urban planning

The North Harbour was the first new Danish city district to be pre-certified with DGNB Platinum. The project embodies our approach to urban planning. Through intense analysis we identify the special nature of a given context; its predisposed potentials, its aesthetic qualities and its cultural heritage. We compose progressive visions for the future, facilitate collaboration and dialogue within complex client- and user constellations, and ensure value and quality in the final realization.


Cultural Heritage

SLETH is formed by a special appreciation of the Modernist movement in architecture and planning. In 2005 partners Søren Leth and Rasmus Therkildsen initiated and curated an exhibition about the Danish modernist Knud Blach Petersen, best known for his design of the large scale housing project Gellerup Parken in Aarhus. Through the exhibition Petersen, who at the time was widely discredited for his work, regained public interest in his practice, which has later led to several of his projects being listed as cultural heritage.

SLETH continues to work as advisors and architects for municipal and private clients on preserving and transforming Danish modernist masterpieces; among others the Danish School of Journalism (Kjær & Richter) and Herning Højskole (Viggo Møller-Jensen and Tyge Arnfred).



SLETH works integrated with landscape architecture in our design practice on both city- and building-scale. Driven by our ambition to create projects that are born from the existing conditions of the site, each project is tailored to weave together city, building, and nature to ensure synergies between the built and the grown. We work with a broad range of landscape disciplines including coastal resiliency, landscape analyses, placemaking, rainwater management, ressource mapping, planting strategies, beautification, and identity creation in our pursuit to make pleasant, robust, and futureproofing projects.

Besides insisting on reclaiming the role of nature in every project, we also work with stand-alone landscape projects such as Blåvand City Center in Southern Denmark and with reconstruction, renovation, and renewal of modernistic cultural landscapes such as Herning Højskole (C.TH. Sørensen) and The Aarhus School of Journalism (Sven Hansen).



SLETH has designed a range of widely acknowledged buildings, including Sonnesgade 11 and Tønder Townhall. We have a team of talented architects and constructing architects securing high quality in all phases of building – from initial sketching and programming, communicating with authorities, to final detailing and construction management.

We develop smart solutions in close collaboration with engineers and contractors to push the limits of sustainable architecture. We design for the future, considering everything from the lifetime of building materials across optimization of the construction process to the everyday use of the finished building. Our work balances the specificity of site and context with the versatility of programme, producing architecture that is anchored in its surroundings while being prepared for the future.



An integral part of the office’s DNA is cultural and communal engagement. SLETH regularly organizes exhibitions, lectures, workshops, and events for the general public with the intent to educate, discuss, and learn about the urban situations and communities that are at the very core of our work.

We support cultural-, health-, and educational institutions by developing grant applications and preliminary sketch projects with the aim of raising the overall quality of the built environment and ensuring a sustainable framework for public activities. Projects include refurbishment and additions to the DGI House in Aarhus, transformation of the former School of Journalism into a museum and community hub, and a new stadium for Bakken Bears.



At SLETH we believe in forming and managing trusting and long-lasting relationships with our clients and collaborators. We consider our office as an open workshop space and frequently invite project groups to join us for meetings centered around interactive physical models.

Our office in Sonnesgade 11 reflects our approach and process. We work collaboratively, hang our ongoing work on the walls, and are constantly sharing knowledge and experience with each other. The office is a dynamic container of physical models, drawings and material samples, all of which are actively used in our design process.