About Us

We have been developing software for companies and the public sector for over 20 years.

  • Development oriented

    We are constantly developing and validating new ideas.

  • Result oriented

    We focus on the target to create effective solutions.

  • Team oriented

    Everyone develops autonomously with guidelines and support of a strong team.

  • Future oriented

    Development with the latest technologies and tools.

What we offer

As a provider of individual software development, we put special emphasis on quality assurance, cost development and time planning throughout the whole project.

Our Services

How we work

Our project management is based on phase concepts and agile methods. We record the scope of the project in order to then allow for any changes with agile planning. Via our PM tool we offer continuous insight into the project.

Our Services
  • Development phases

    Projects with clear objectives, team structure and hierarchies. Phase planning at the beginning. Determinated objectives and project plan

  • Agile teams

    Development with a hands-on approach Interdisciplinary teams, flat hierarchies. Sprint phases with prototypes and tests. Customers are involved in the process.

Our team

Our core team consists of 25 employees, many of whom have been on board since 2001. As a result, we have a broad knowledge base.

Since the comapanies founding, the managing directors and shareholders have focused on commercial diligence, organic growth and technological development.

Careers with lemon⁴²

International partners

Together with our partner I-New, we are taking our technology expertise beyond the borders of Austria. International top companies in the telecom industry use our solutions worldwide.

  • 20+

    Years of experience

  • 500+

    Successful projects

  • 270+

    Satisfied customers

  • 15+


  • Quality & Security

    Before going online, our solutions undergo a security check. We use standards such as OENORM 7700, OWASP, Application Security Verification Standard and Secure Coding Guidelines from Mozilla. Our quality assurance guarantees the full functionality of your solution with manual and automated tests.

  • Integration with your IT

    During implementation, existing systems of an IT infrastructure can be integrated via web service or on database level. When designing the solution, we take care to consolidate the data streams, to use existing information from the respective systems and to avoid duplication of content.

  • Performance & Scaling

    We take technical measures to ensure fast loading times for the user. Our solutions undergo standardized load and scaling tests before going online. When creating web applications, we consider options for vertical as well as horizontal scaling.

  • Ready for Cloud

    lemon42 solutions can be operated scalably in the cloud. We also support on-site hosting or in a classic server housing environment. In addition, we take over operation, maintenance and monitoring and offer service level agreements. Depending on the agreement, also as a 24*7 solution.

  • Responsive Design

    With our design and usability specialists, we create user-oriented concepts so that our web solution meets modern requirements. We develop designs that adapt to any end device.

  • Project Management

    Our project management is a mixture of proven phase approaches and agile concepts. We capture the overall scope of the project as early as possible - flexible planning allows for changes during the project.

  • Analytic Tools

    To make the success of the web solution tangible, we make it possible to analyze user behavior with professional tools such as Google Analytics.

  • Accessibility solutions

    "Usability by design" is a self-evident fact for us, also with regard to accessibility. Our solutions are implemented according to the desired WAI level.

Technical Stack

  • Angular
  • Node
  • React
  • Python
  • Java Script
  • Vue.js
  • .NET
  • Strapi
  • MySQL
  • Amazon
  • iOS
  • Android

You are looking for a solution? We are looking for a challenge

Contact us