Our Ambition is to Multiply Your Potential to Think and Achieve Big

Tekla produces information modelling software for construction, energy and infrastructure industries.

We drive the evolution of digital information models and provide competitive advantage to the construction, energy and infrastructure industry. Tekla became part of Trimble in July 2011. 

The company has two business areas, Building & Construction and Infra & Energy, which cater for the needs of the respective industries. In both areas, we work close to our customers. 


  • Established in 1966
  • Headquarters in Espoo, Finland
  • Global presence: offices in more than twenty countries, a worldwide partner network, and  customers in over 100 countries
  • Employs nearly 800 people
  • Tekla became part of Trimble Navigation Ltd. in 2011. 
    More information on Trimble at: www.trimble.com

Tekla collaborative, shared values drive our actions and guide us in how we act as employees and as a company.


Professional expert

Tekla professional expertise and shared, jointly agreed policies, and practices enable our superior quality performance. Our goal-driven and systematic operating policies guarantee an outcome that we can be proud of.

Committed partner

Our operations are based on providing customers with a major competitive edge and value. Commitment, mutual trust and the ability to meet customers’ ever-changing needs ensure successful and long-term co-operation. It is a matter of honor for us to keep our promises.

Innovative pioneer

As a pioneer, Tekla encourages innovation and the identification of new opportunities and solutions. We have a zest for creating new solutions and modernizing old ones, as well as the expertise required for putting results successfully into action.

Successful team

Together we form a successful team whose members learn from one another. Mutual respect, openness, and recognizing successful employee performance create the Tekla Spirit. We have a strong drive to succeed.

The Tekla Management Team consists of the President and the Directors of the business areas and key support functions.


Timo Keinänen

Tekla's Managing Director
Master of Science in Economics and Business Management


Anneli Bergström

Vice President, Director responsible for Human Resources
Master of Science in Computer Science


Ritva Keinonen

Vice President, Director responsible for Product Development, Building & Construction
Master of Science in Engineering, eMBA


Kai Lehtinen

General Manager, Trimble Energy & Public Administration Division
Master of Science in Engineering


Harald Lundberg

Vice President, Director responsible for Tekla Information Management
Master of Science in Engineering


Risto Räty

Executive Vice President, Deputy CEO of Tekla and General Manager of Trimble Buildings Structures Division 
Responsible for Building & Construction business area
Master of Science in Engineering

Tekla personnel 1976By the mid-1960s, computers and automatic data processing were well established in Finland. Companies that performed advanced engineering computing had also adopted Automatic Data Processing (ADP).

Due to the ever-increasing amount of computing work and lack of resources, a group of engineering offices established a joint software company. The company, named Teknillinen laskenta Oy ("technical computing") was registered in February 1966. The same spring, the company trading name was abbreviated to Tekla. Tekla's first office was located in Helsinki, Finland.

The foundation for Tekla's operations was defined as ADP consultation, computing services, training courses and software development. Six planning committees were formed in 1967 for the latter purpose, representing the different industries of the shareholding companies. The goal of the planning committees was to define the features of common software in cooperation with Tekla employees.
In fact, these committees created the model for Tekla's future way of working: starting projects to develop new programs in conjunction with customers.




Teknillinen laskenta Oy is established in Helsinki. Tekla is adopted as new trade name. Reino Heinonen is appointed as the company's Managing Director.


Focus of software development shifts to structural engineering, road building and earth-moving.


Tekla opens a remote connection to Nokia's computing center.


Tekla opens a fixed remote line to the Control Data Corporation computing center in Stockholm and obtains its first Scandinavian customers.


Tekla begins FEM (Finite Element Method) computation and gains customers in the mechanical engineering industry.


Plotter software and graphic printing are adopted.


Tekla acquires its first main computer (Perkin Elmer).


The company adopts Tekla Oy as its legal name.


All designers and programmers get an alphanumeric terminal of their own.


Tekla develops virtual database technology: the use of relational databases becomes notably faster.


Tekla's first successful systems that combine graphics and a relational database are completed.


Tekla begins developing its own technical tools, "kits", for software development.


All of Tekla's new software development projects are moved to the Unix environment using the company's own technical tool (GISbase). 


Tekla's first X product, Xroad for road planning, is launched, followed by Xcity for urban planning.


The Xpower network information system for electricity utilities is followed by a similar system for telephone companies: Xcable.


The commercial version of the structural steel engineering software Xsteel is completed.


Tekla's quality system is certified.


A subsidiary is established in Sweden. Tekla's transfer to the Windows environment begins with the Xforest software product.


Tekla completes its first Internet technology application: WebMap for municipalities.


Tekla's long-term Managing Director Reino Heinonen is followed by Seppo Ruotsalainen. Tekla establishes a subsidiary in Malaysia.


Tekla establishes subsidiaries in the United States, the United Kingdom, Germany and Japan.


Tekla is listed on the Helsinki Stock Exchange. The company buys the French company SMRT, which becomes Tekla's subsidiary Tekla Sarl. Tekla also starts subsidiaries in Norway, the United Arab Emirates and Brazil, and a representative office in China.


Tekla divests its Xcable, Xenvi and Xforest operations and buys customer information system business and related services from Finnish Enfo Plc.


Seppo Ruotsalainen resigns in November, and Heikki Multamäki is appointed as the company's acting President and CEO. Tekla introduces extranet and intranet network services developed for energy companies.


Microsoft .NET software development environment is adopted.


Ari Kohonen starts as President and CEO. The business acquired from Enfo is sold to TietoEnator. Tekla Structures structural engineering software (based on Xsteel) is launched.


Tekla's 40th anniversary. Tekla establishes a liaison office in India.


Tekla sells its project-based Defence business to Patria. Tekla establishes an office in Denmark.


More than 80% of net sales comes from international operations. Tekla has an own office in 12 countries and a worldwide partner network. Tekla's software products and services are used in more than 80 countries.


In February Tekla Malaysia opens a representative office in Jakarta, Indonesia and another in July in Bangkok, Thailand. More than 16,000 Tekla Structures licenses are sold globally.


More than 18,000 Tekla Structures licenses are sold globally. Tekla has customers in nearly 100 countries. In February Tekla receives the 2009 Internationalization award from the President of the republic of Finland. In the same month, Tekla establishes an office in Singapore to serve as the Tekla hub for South East Asia.


Tekla becomes part of Trimble Group.


Tekla is outlisted from the Helsinki Stock Exchange.


Tekla leverages the work of Trimble Buildings and Trimble Infrastructure division.


CSC becomes part of Tekla.

The story of Tekla

Media Folder: 

Tekla develops model-based software products for the architectural, engineering, and construction (AEC) market, for local government use and for power companies. These products provide users with state-of-the-art features and functionality for creating, analyzing, and changing model-based information. Feasible implementation of the products is made possible by Tekla’s own technology platform and architecture.

Tekla applications manage large amounts of complex information. This information has a multi-dimensional geometric or locational component. It is not, however, managed through a drawing or map or 3D visual approach; instead, the information is stored in a data model.

The advantages of a data model approach are obvious: data model evolution, multi-user access, availability in other applications, and other important requirements are easy to fulfill. Since sufficient support for the geometry or location component of the information is not readily available in data model tools, Tekla has gone through a great deal of its own development in this area.

How model-based information is used

One way to demonstrate the advantages of the model-based approach is to look at the evolution of a data model. As an example, during the last decade it has become increasingly necessary to support the time dimension in the 3D model for construction design. Due to the flexible nature of data models, adding the fourth dimension was very straight forward. Another trend is the growing role of cost information as the 'fifth dimension'.

Advances in communication technologies have made collaboration between people and companies working on a same project first of all possible and secondly necessary. The model-based approach readily supports this source of improved productivity through the natural ability to create new models from the combined information of multiple data sources. Sharing a model or the exchange of changes to a model are all built-in services in model-based systems.

Finally, the integration of different information systems is impossible without clean interfaces for access to information and related services. For a data model, these requirements are fulfilled through standard functionality.

Tekla software architecture

Implementing a model-based system that manages financial data or customer information is relatively easy, since there are many tools for creating these horizontal applications. For many vertical markets, such as those that Tekla works with, there are no tools available or they provide insufficient performance or feature sets.

To be able to support all the needed functionality at the required performance level also with large models, Tekla has designed a software architecture that combines available technologies with custom-built ones.

The underlying foundation is Microsoft’s .NET technology and its development tools. The .NET provides a vast amount of basic software development services and offers the highest available level of productivity for Tekla and its partners. .NET is also the industry standard in interconnecting desktop applications.

Tekla’s technology platform, Tekla Technology, provides the tools required for the model-based approach. The data model needs to work in an intelligent way and maintain full integrity at all times, and changes to it need to be visualized immediately. For example, when the profile of a beam in a structural model is modified, changes need to propagate to a number of connections and other parts in the model.

Making sure that the model always behaves as needed without delay is what customers expect of Tekla. Keeping this promise allows our customers to reach the levels of productivity and quality they need to remain competitive in their own fields.