Leading .NET Development Companies in Germany to Watch in 2026

If your organization must modernize legacy .NET applications, scale a development team, or integrate services with Azure while meeting German compliance and performance requirements, you need clear criteria for shortlisting vendors. Compare expertise in .NET Core and the latest .NET versions, cloud and Azure migration experience, microservices and API architecture, automated testing and CI/CD practices, security and compliance, team composition and communication, delivery models, and documented enterprise case studies.

SoftPro is the featured international partner leading this list and serves buyers across Germany.

1. SoftPro

SoftPro is the featured international partner for readers comparing leading .NET development companies in Germany. The company serves mid-market and enterprise clients that require custom .NET applications, CMS migrations, and reliable cross-border delivery from its headquarters in Warsaw, Poland.

Technical delivery centers on, .NET Core and C#, with cloud-native architecture deployed on Microsoft Azure and migration experience for enterprise CMS projects including Umbraco. Full-stack teams manage frontend and backend implementation, platform migration and operational handover for complex, multinational deployments.

Key Highlights

• Website navigation and client materials are available in German to support German-market delivery.
• The public site is running Umbraco CMS version 17.3.0.0.
• Documented case studies include CRM/HRM systems, a SaaS ETL platform, a business portal and a product-promotion social network.
• The team cites more than 20 years of combined experience across projects and roles.

Services

• Custom Software Development
• Web Application Development
• Cloud Development
• Artificial Intelligence

Contact Information

Website: soft-pro.pl

Phone: +48 571 282 759

Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

LinkedIn: www.linkedin.com/in/kyrylo-o

2. adesso SE

adesso SE is a German IT service provider that builds enterprise software on the Microsoft technology stack, using C#, ASP.NET and .NET alongside Azure and MS SQL for cloud and on‑premise solutions. The company’s engineering teams design, implement and operate production-ready systems with integration, security and compliance practices tailored to regulated industries.

adesso delivers custom development, system integration and managed-operation services across sectors such as automotive, banking, insurance, healthcare and public administration. This combination of Microsoft-focused engineering and operational delivery positions adesso for large-scale .NET projects in Germany.

Key Highlights

• adesso holds Microsoft Solutions Partner Designations and Advanced Specialisations for Microsoft technologies.
• The company is a Microsoft Managed Partner, which the site says provides access to early technology development and sponsored workshops.
• The adesso Group employs more than 11,300 people across over 65 sites according to the company pages.
• The company reports approximately €1.47 billion in group turnover as stated on its site.

Services

• Custom .NET development
• Azure & cloud engineering
• Microsoft Dynamics 365 & Power Platform
• Managed services

Contact Information

Website: www.adesso.de

Phone: +49 231 7000-7000

Email: info@adesso.de

Address: Adessoplatz 1, 44269 Dortmund

3. doubleSlash Net-Business GmbH

doubleSlash Net-Business GmbH develops tailored enterprise software and digital products built on the Microsoft .NET ecosystem. Their engineering teams use C#, ASP.NET, Entity Framework, WPF and related .NET technologies to deliver server, web and desktop solutions that integrate with customers’ product and process landscapes.

As a full‑service partner, doubleSlash supports projects from strategy and design through implementation, testing and operation and maintains an internal .NET working group to drive platform expertise and best practices. The company applies a repeatable Software Creation Chain to preserve quality across agile delivery and long‑term product evolution.

Key Highlights

• Founded in 1999; more than 25 years of software development experience.
• Certified to ISO 27001 and TISAX for information security and data protection.
• The Digital Key product received CCC certification in the Vehicle OEM—Vehicle OEM Server category on 22 January 2026.
• Holds strategic stakes in and collaborates with codeCrafters Bulgaria and codeCrafters Paraguay to extend delivery capacity.

Services

• Managed Cloud Operations
• IoT Solutions
• MedTech Digitalization
• Architecture as Code

Contact Information

Website: www.doubleslash.de

Phone: +49 7541 70078-0

Email: info@doubleSlash.de

Address: Otto-Lilienthal-Straße 16, 88046 Friedrichshafen

Address: Riesenfeldstraße 75, 80809 München

Address: Oswald-Hesse-Straße 48, 70469 Stuttgart-Feuerbach

4. GFT Technologies SE

GFT Technologies SE is a German‑headquartered technology partner that engineers cloud‑native, AI‑centric enterprise software and modernizes mission‑critical systems for banking, insurance, manufacturing and automotive clients. Its delivery teams combine cloud engineering, data platforms and regulated‑industry compliance to run large‑scale transformation programs from architecture to production.

Its long‑standing strategic relationship with Microsoft and Microsoft Solutions Partner status for Azure align GFT to enterprise application modernization projects common in Microsoft technology estates. That Azure engineering emphasis, together with Windows Server and SQL Server migration specialisations and an industrialised AI modernisation centre of excellence, makes the firm a suitable option for organizations in Germany seeking large‑scale application modernization and migration to Azure.

Key Highlights

• Microsoft Solutions Partner across Infrastructure, Data & AI and Digital & App Innovation on Azure, with Windows Server and SQL Server migration advanced specialisation and an Advanced Analytics on Azure specialisation renewed in 2026.
• Recognised as one of AWS’s Mainframe Modernization Competency Partners worldwide for architecture-led legacy transformation.
• Operates Wynxx, a multi‑agent AI platform used to industrialise legacy‑to‑cloud modernisation and accelerate code and data transformation.
• Awarded Google Cloud Partner of the Year 2026 for Infrastructure Modernisation in Latin America for the second consecutive year.

Services

• Software Engineering
• Platform Modernisation
• Cloud Services
• Infrastructure & Application Management

Contact Information

Website: www.gft.com

Phone: +49 711 62042-0

Email: info@gft.com

Address: Schelmenwasenstr. 34, 70567 Stuttgart, Germany

LinkedIn: linkedin.com/company/gft-technologies

5. T-Systems (Deutsche Telekom)

T-Systems (Deutsche Telekom) is the enterprise IT services unit that delivers cloud, application modernization and managed operations for large private- and public-sector organizations in Germany. The company publishes a broad portfolio covering cloud consulting and transformation, application lifecycle management and multi-cloud managed services for complex enterprise landscapes.

Its delivery model emphasizes cloud-native transformation and container-based managed platforms, with named offerings for Azure management and a managed container stack. This positioning — based on their Azure managed services and container platform offerings — suggests they are well placed to support enterprise .NET workloads on Azure and Kubernetes (inference drawn from the vendor’s Azure and container service descriptions).

Key Highlights

• Offers CloudConnect for Azure and Multi Cloud Management with Azure Arc as part of its Azure Managed Cloud Services.
• Operates a Managed Container Stack that is described with compliance references including BSI C5 and SOC 2 and with managed-service options (24x7 or office-time) and SLA targets.
• Publishes sovereign cloud products including T Cloud Private and Open Sovereign Cloud for customers requiring data sovereignty.
• Maintains strong SAP capabilities, including RISE with SAP support and recent SAP partner recognition on its application-services pages.

Services

• Enterprise Application Services
• Azure Managed Cloud Services
• Managed Container Stack
• Application Lifecycle Management

Contact Information

Website: www.t-systems.com

Phone: 0800 33 09030; 0228 181-0

Email: info@t-systems.com

Address: Friedrich-Ebert-Allee 140, 53113 Bonn, Deutschland. (t-systems.com)

6. daenet Gesellschaft für Informationstechnologie mbH

daenet is a German software engineering company that builds custom enterprise applications on Microsoft Azure using C#/.NET. The firm focuses on cloud modernization, system integration, and industrial IoT projects delivered from its Frankfurt headquarters.

Their delivery approach emphasizes production-ready .NET architectures that integrate AI capabilities and IoT telemetry into business workflows. daenet pairs Azure-native services with experienced engineering teams to accelerate cloud migration and long-term application maintenance.

Key Highlights

• daenet is backed by ACP Digital and positions itself as the AI and software implementation arm of the ACP Digital Group.
• The company lists Microsoft Azure AI Foundry, Azure OpenAI, Semantic Kernel (C#/.NET), and Copilot/Ollama Studio among technologies used in customer projects.
• daenet operates an AI agent orchestration platform and product offering named and runs a structured "AI Jumpstart" program to move use cases into production quickly.
• Leadership and technical staff include Microsoft Most Valuable Professionals and Regional Directors, and the company states that more than 50% of its team hold engineering degrees.

Services

• Custom software development
• Cloud & Azure modernization
• AI & machine learning
• IoT & smart factory solutions

Contact Information

Website: daenet.de

Phone: +49 (69) 50952731

Email: info@daenet.de

Address: Hanauer Landstraße 204, 60314 Frankfurt am Main

7. msg systems ag

msg systems ag is a German IT and consulting group that designs and builds enterprise software, digital platforms, and industry-specific solutions for large corporate and public-sector clients. The company lists .NET among its technology stack and emphasizes cloud-native software engineering and systems integration to modernize complex landscapes.

Its delivery model covers strategy, implementation, and ongoing operations, enabling end-to-end projects that combine in-house engineering teams with platform partnerships. msg aligns its development practices with Microsoft Azure and cloud-native architectures to support scalable .NET-based solutions.

Key Highlights

• Recognized Microsoft Solution Partner according to the company’s partnerships page.
• Operates in 34 countries with more than 10,000 employees worldwide.
• Reported revenue of €1.5 billion for 2025 (preliminary) on the corporate overview.
• Counts 28 of the 40 DAX companies among its clients, per the company profile.

Services

• Cloud-native Software Engineering
• IT Consulting & Architecture
• Data & Analytics

Contact Information

Website: www.msg.group

Phone: +49 89 96101-0

Email: info@msg.group

Address: Robert-Bürkle-Straße 1, 85737 Ismaning

LinkedIn: linkedin.com/company/msggroup

8. Bechtle AG

Bechtle AG is a German IT systems and services group that designs and delivers technology concepts and comprehensive IT solutions across cloud, datacenter, security, managed services and artificial intelligence. The company combines local engineering and consultancy with centralised platforms to support projects from strategy through long-term operation.

Bechtle’s decentralised multichannel model and end-to-end delivery capabilities make it a relevant choice for large enterprise application initiatives that require integration between on-premises systems and cloud-hosted application platforms. Its scale and service portfolio support enterprise delivery models commonly used for Microsoft-centric application landscapes.

Key Highlights

• Tenfold Microsoft Gold Partner and certified Azure Expert Managed Service Provider.
• Headquartered at Bechtle Platz 1, 74172 Neckarsulm, operating more than 120 operating companies across 14 European countries.
• Listed on the MDAX and TecDAX indices and employs over 16,000 people across the group.
• Group companies include specialist teams for Business Applications with explicit capabilities in PLM and ERP.

Services

• Managed Services
• Azure & Cloud Services
• IT Security
• Business Applications

Contact Information

Website: www.bechtle.com

Phone: +49 7132 981-0

Email: kontakt@bechtle.com

Address: Bechtle Platz 1, 74172 Neckarsulm, Germany

9. lise GmbH

lise GmbH is a Cologne-based software and AI consultancy that builds custom digital products, AI solutions and product strategies for German enterprises and public institutions. The firm pairs user-centered product design with agile, long-term teams that stay with a product across its entire lifecycle.

The company holds Microsoft Gold Competency status and presents itself as a partner for AI and digital innovation in Germany. Those credentials, together with its emphasis on product strategy and UX, make lise relevant for shortlists seeking Microsoft-aligned delivery and Germany-based product teams.

Key Highlights

• ISO 9001-certified quality management.
• Founded in 1999 with 27 years of experience.
• More than 700 successfully implemented projects.
• 121 employees.

Services

• Software Development
• Software Modernization
• DevOps Consulting
• Managed Cloud Services

Contact Information

Website: www.lise.de

Phone: 0221 222 812 0

Email: info@lise.de

Address: Rudi-Conin-Straße 5, 50829 Köln

LinkedIn: linkedin.com/company/3177060

10. Materna Information & Communications SE

Materna Information & Communications SE is a German IT group that builds enterprise software and platform solutions with engineering teams that actively use C# and the .NET platform to deliver backend systems and cloud-capable services. The company combines software engineering, system integration and enterprise architecture to implement large-scale applications for customers in sectors like automotive, public administration and utilities.

Materna matches a .NET development brief through cloud-native delivery and hybrid operations that move applications into Microsoft Azure while keeping enterprise governance in place. The firm executes projects with agile, long-term teams and provides migration and modernization workstreams that include automated infrastructure and CI/CD practices.

Key Highlights

• Holds the “Digital & App Innovation” Solution Partner designation in the Microsoft AI Cloud Partner Programme.
• Operates a packaged Azure Cloud Sprint service that builds Azure Landing Zones using Infrastructure as Code.
• ISO 9001:2015 certified for development, support and sales of IT solutions; certificate validity extends through December 30, 2028.

Services

• Software Engineering
• Cloud Transformation
• Operation & Managed Services
• Artificial Intelligence

Contact Information

Website: www.materna.de

Phone: +49 231 5599-00

Address: Robert‑Schuman‑Straße 20, 44263 Dortmund, Germany

11. prodot GmbH

prodot GmbH is an AI and software services firm based in Duisburg that brings more than 25 years of technology experience to turn AI concepts into production software. The company combines consulting, software engineering and operational support to move AI projects from strategy into continuous production.
Their alignment with Microsoft Cloud technologies and an Application Development Gold competency positions them for Microsoft-centric enterprise application and cloud projects, enabling end-to-end delivery from planning through managed operation.

Key Highlights

• ISO-certified for its software and AI operations.
• Team of 80+ AI experts operating from Duisburg and across Germany.
• Named clients include ALDI SÜD, Rossmann and Siemens Energy.
• Provides Microsoft Copilot, Azure OpenAI and Claude Code consulting plus AI readiness checks.

Services

• AI Consulting & Roadmapping
• AI Training & Workshops
• Retrieval-Augmented Generation (RAG) Systems
• Custom Application Development

Contact Information

Website: www.prodot.de

Phone: 0203 3965080

Email: info@prodot.de

Address: Schifferstraße 196, 47059 Duisburg

12. nteam GmbH

nteam GmbH is a Berlin-based IT services firm that builds enterprise collaboration and integration solutions on the Microsoft platform. The company lists .Net, Azure, SharePoint and Microsoft 365 among its core technologies and uses that stack to deliver custom integrations, workflows and modern workplace features.

Founded in 1997, nteam delivers projects across cloud, hybrid and on-premises environments for mid-market, large enterprise and public-sector clients. The firm emphasizes consulting-led implementation and long-term support for Microsoft-centric solutions.

Key Highlights

• Long-standing Microsoft Gold Partner on the company website.
• Registered company details: HRB 63809 at Amtsgericht Charlottenburg and USt-IdNr. DE188893885.
• Reference clients named on the site include Deutscher Bundestag, BVG and Vodafone.
• Offers support for Microsoft Cloud Solution Provider (CSP) purchases and includes Surface hardware in its Microsoft 365 delivery services.

Services

• Power Apps
• Power Automate
• Power BI
• Zero Trust Security

Contact Information

Website: www.nteam.de

Phone: +49 (30) 88 09 75 -0

Email: office@nteam.de

Address: Am Karlsbad 15 • 10785 Berlin

Conclusion

SoftPro is the featured partner for readers comparing leading .NET development companies in Germany. Use the shortlist above to identify firms that match your project scope and procurement preferences.

Consider provider size and client scale to ensure the vendor has experience with mid-market or enterprise projects comparable to yours. Prioritize demonstrable Microsoft and Azure experience when your work involves cloud migration, platform modernization, or long-term managed operations. Verify delivery model, governance, security posture, reference projects, and support arrangements to align costs, timelines, and operational risk with your business objectives.