In Every Particle — Understanding and Connecting Technology
Custom software development, data-sovereign AI, and digital transformation for the DACH region. For over 10 years, WIENtech has built the software that holds complex business processes together — for FinTech, healthcare, smart buildings, and enterprises that need AI on their own data without external dependencies.
Our Services — Custom Software Solutions and Data-Sovereign AI for the DACH Region
We guide companies across Germany, Austria, and Switzerland through every stage of digital transformation — from digitalization strategy and tailored software development to data-sovereign AI deployment and long-term operations. Six core areas, refined over a decade: digital transformation consulting, complex system integrations, FinTech software development, digital healthcare, intelligent building automation, and custom AI solutions built on your own business data.
Digital Transformation
Strategy, roadmaps, and execution for Mittelstand and enterprise teams across the DACH region
Complex System Integrations
Enterprise integrations and interface development for real-time business data
FinTech Digital Solutions
BaFin-compliant and FINMA-compliant financial platforms, payment systems, and billing products
Digital Healthcare
MDR-compliant eHealth solutions, DiGA development, and telemedicine platforms
Smart Buildings & PropTech
Building automation for zero emission buildings, ESG reporting, and portfolio control
Data-Sovereign Agentic AI
Autonomous AI agents on your business data, GDPR-compliant and without cloud dependency
01
Digital Transformation — Strategy and Execution for the Mittelstand and Enterprise
WIENtech delivers end-to-end digital transformation consulting for B2B companies in the DACH region — from business process analysis and digitalization strategy through legacy system replacement, process automation, and deploying AI agents for data-driven decision-making. Whether you are a Mittelstand manufacturer or a multinational enterprise, we replace legacy systems, automate workflows, modernise your IT landscape, and execute cloud migration strategies through agile development and close collaboration with your domain teams.
For SMEs, we proactively secure government funding: KMU.DIGITAL in Austria, go-digital in Germany, and cantonal digitalization programmes in Switzerland. SME digital funding can offset a substantial portion of your investment, and we handle the application process so you can focus on outcomes.
Digitalization strategy and transformation roadmap development
Legacy system replacement, cloud migration, and IT landscape modernisation
Business process automation and workflow optimisation
Data governance and enterprise data management
SME digitalization funding advisory for DACH programmes
Digital change management for B2B organisations
02
Complex System Integrations — Connecting Your Business Systems Across the Enterprise
WIENtech builds custom integration solutions that connect your ERP, CRM, and industry-specific systems into a unified data landscape. We connect the systems your teams already use so information flows automatically instead of being re-entered manually. These same integration capabilities power our AI solutions, enabling AI agents to access data across all your business systems.
For DACH manufacturers, we deliver Industry 4.0 integrations: connecting shop-floor machines and sensors to your business systems so production data reaches the people who make decisions. Industry 4.0 consulting backed by hands-on engineering.
SAP integration, ERP interface development, and custom API development
Connect ERP, CRM, warehouse, and industry-specific systems
Data consolidation from multiple sources into a single view
Industry 4.0 connectivity for machines, sensors, and production lines
Legacy system integration, data migration, and automated data flows
Real-time data access across departments and systems
03
FinTech Software Development — BaFin-Compliant, Scalable Financial Platforms for the DACH Region
WIENtech builds secure, scalable FinTech platforms that are BaFin-compliant and FINMA-compliant from the ground up — engineered for availability, GDPR-compliant data residency, and deep integration with established banking and payment infrastructure. Our portfolio includes digital payment solutions, loan management software, eMobility billing systems, Charging-as-a-Service platforms, treasury management, and pay-per-use business models.
Whether you are a German FinTech startup building a platform or an established financial institution modernising legacy systems, WIENtech delivers the custom software that carries your business model. Financial digitalization in the DACH region demands a partner who understands both regulation and technology.
BaFin-compliant and FINMA-compliant software development
Digital payment solutions and payment processing integration
eMobility billing systems and Charging-as-a-Service platforms
Loan management software and digital loan origination platforms
Treasury management and pay-per-use platform development
PSD2-compliant integrations and open banking connections
SaaS platform development for FinTech companies
04
Digital Health Software Engineering — MDR-Compliant eHealth Solutions for Germany, Austria & Switzerland
WIENtech develops eHealth solutions that are MDR-compliant and GDPR-compliant, integrate with hospital information systems, and connect to the German Telematikinfrastruktur. Our digital health portfolio includes DiGA development, telemedicine platforms, digital patient record integration, AI-powered medical documentation, and workflow automation for hospitals and medical centres.
Every solution is built for the approval requirements of the DACH healthcare market, not adapted from a generic international template. Health app development in Germany requires MDR-compliant engineering from day one.
MDR-compliant software development and ISO 13485 processes
DiGA development and prescription app engineering
Telemedicine platform development and white-label video consultation
Hospital system integration and secure clinical data exchange
Digital patient record integration and TI connectivity
AI-powered medical documentation and automated reporting
Health app development for DACH regulatory standards
05
Smart Home & Building Automation — Intelligent Systems for Zero Emission Buildings in the DACH Region
The revised EPBD (EU 2024/1275) mandates zero emission building compliance for new public buildings from 2028 and all new buildings from 2030. Smart home systems and intelligent building automation form the foundation by connecting heating, cooling, lighting, and renewables into one unified control system.
WIENtech develops GDPR-compliant building automation that works reliably even without internet. A local control unit manages real-time building operations on-site, while the cloud platform in European data centres delivers analytics, automated ESG reporting, and portfolio management. We build on LoRaWAN for large building portfolios and Matter for manufacturer-independent device compatibility.
Building automation that works reliably even without internet
LoRaWAN sensor networks for large building portfolios
Matter as the manufacturer-independent smart home standard
Connect existing building equipment, including older installations
EPBD-compliant zero emission building software and ESG reporting
Energy monitoring and management across property portfolios
GDPR-compliant building automation with European hosting
06
Data-Sovereign Agentic AI — Custom AI Software Built on Your Own Business Data
WIENtech develops custom AI software that operates exclusively on your own business data, without sending a single byte to external providers. No external cloud services, no vendor lock-in, and no dependency on third-party AI platforms. Our AI agents retrieve information from your internal data sources, validate results, and deliver well-founded answers to complex business questions on infrastructure you control.
Complete data sovereignty and GDPR compliance start at the architecture level. No external provider trains on your data, no US cloud dependency, and no regulatory grey area. Your teams make strategic decisions faster based on AI that genuinely understands your organisation's data.
AI software that works exclusively on your own business data
Autonomous AI agents that find answers across internal documents and systems
Open-source AI models on your infrastructure or in European data centres
Complete data sovereignty with no data leaving your organisation
GDPR-compliant AI with no vendor lock-in or external cloud dependency
Data-driven decision-making across contracts, documents, and enterprise knowledge
Connects to ERP, CRM, document management, and data warehouses
Digital Transformation
WIENtech delivers end-to-end digital transformation consulting for B2B companies in the DACH region, from business process analysis and strategy to legacy replacement, workflow automation, and cloud migration.
For SMEs, we also secure funding through programmes such as KMU.DIGITAL in Austria, go-digital in Germany, and cantonal initiatives in Switzerland.
Digitalization strategy and transformation roadmaps
Legacy replacement, cloud migration, and IT modernisation
Business process automation and workflow optimisation
Data governance and enterprise data management
Change management for B2B organisations
SME digitalization funding advisory
Complex System Integrations
We connect ERP, CRM, and industry-specific systems into a unified data landscape so information flows automatically instead of being re-entered manually.
For manufacturers, we connect machines and sensors to business systems so production data reaches the people who make decisions.
SAP integration, ERP interfaces, and custom APIs
Connect ERP, CRM, warehouse, and industry software
Data consolidation from multiple sources
Industry 4.0 connectivity for machines and sensors
Legacy integration, migration, and automated data flows
Real-time data access across departments
FinTech Digital Solutions
We build secure, scalable FinTech software that is BaFin-compliant and FINMA-compliant, PSD2-ready, and deeply integrated with existing banking and payment infrastructure.
From startups to established financial institutions, we deliver the custom software behind payment platforms, lending products, and eMobility billing systems.
BaFin-compliant and FINMA-compliant software development
Digital payment solutions and payment processing integration
eMobility billing systems and Charging-as-a-Service platforms
Loan management software and digital loan origination platforms
Treasury management and pay-per-use platform development
PSD2-compliant integrations and open banking connections
SaaS platform development for FinTech companies
Digital Healthcare
We develop MDR-compliant and GDPR-compliant eHealth solutions that integrate with hospital systems and connect to the German Telematikinfrastruktur.
From DiGA development and telemedicine platforms to AI-powered medical documentation, every solution is built for DACH healthcare approval requirements.
MDR-compliant software development and ISO 13485 processes
DiGA development and prescription app engineering
Telemedicine platforms and white-label video consultation
Hospital integration and secure clinical data exchange
Digital patient record integration and TI connectivity
AI-powered medical documentation and reporting
Health app development for DACH standards
Smart Buildings & PropTech
The revised EPBD mandates zero emission building compliance for new public buildings from 2028 and all new buildings from 2030, making intelligent building automation a core software requirement.
Our building control systems work reliably even without internet, while European cloud infrastructure delivers analytics, ESG reporting, and portfolio management.
Offline-capable and secure building automation
LoRaWAN sensor networks for large property portfolios
Matter for manufacturer-independent device compatibility
Retrofit integration for existing building equipment
EPBD-compliant software and automated ESG reporting
Energy monitoring across entire portfolios
European hosting and data sovereignty
Data-Sovereign Agentic AI
We develop AI solutions that run exclusively on your own business data, with no external cloud dependency and no data sent to third-party providers.
The result is complete data sovereignty and faster, data-driven decision-making across contracts, customer data, financial information, and internal knowledge.
AI software that works on your own business data
Autonomous AI agents across internal documents and systems
Open-source AI on your infrastructure or in Europe
No data transfer to external AI providers
No vendor lock-in and no US cloud dependency
Data-driven decision support across enterprise knowledge
Integration with ERP, CRM, DMS, and data warehouses
Next Step
Recognize your challenge in one of these six service areas? Let's plan the next step together.
Which companies benefit most from custom software development?
Organisations whose processes are too complex, too regulated, or too differentiated for off-the-shelf products. Typical scenarios: legacy system replacement, SAP and ERP integration, industry-specific compliance, and digitalizing manual workflows in mid-sized companies.
How does the full-cycle software development process work at WIENtech?
Every engagement starts with structured requirements analysis, digitalization strategy, and technical architecture defined with your team. Then come agile development sprints, reviews, testing, deployment, and ongoing maintenance. You see working software within weeks, not months.
How long does a typical custom software development project take?
An MVP can be delivered in 3-4 months. Complex enterprise solutions with system integrations, data migration, and regulatory compliance typically run 6-18 months. With agile development, we deliver working software within the first sprints so assumptions can be validated early.
What makes FinTech software development in the DACH region particularly complex?
Strict regulatory oversight from BaFin and FINMA, PSD2 and GDPR requirements, high availability mandates, audit-proof transaction logging, and secure banking system integration. This combination demands deep domain knowledge and proven integration experience.
How does smart building automation work without internet?
A local control unit manages all critical building operations on-site — heating, cooling, ventilation, and lighting. If the internet drops, the building keeps running normally. When connectivity returns, data synchronises automatically with the cloud platform for analytics and reporting.
What does the EPBD 2024 directive mean for building owners in the DACH region?
All new public buildings must meet the zero emission building standard from January 2028, all new buildings from January 2030. For existing buildings, renovation targets apply to the worst-performing non-residential stock. From 2030, whole-life carbon assessment becomes mandatory for new construction.
Can my company use AI without sharing data with external providers?
Yes. Our data-sovereign AI runs entirely on your own infrastructure or in GDPR-compliant European data centres. No data is sent to external AI providers for processing or training. You keep full control over your business data.
What is the advantage of open-source AI over commercial AI services?
Commercial AI services require your business data to be sent to external servers, which is a major compliance and confidentiality risk. Open-source AI models run on your own infrastructure, giving you full control, no vendor lock-in, and no US cloud dependency.
Which business systems can the AI agents access?
Our AI connects to your existing systems: ERP, CRM, document management, data warehouses, email archives, contract management, and project databases. The AI agents unlock organisational knowledge across departmental and system boundaries.
Digital Europe
Technology for Europe's future
WIENtech builds where Europe's future takes shape: smart building software for zero emission buildings,
digital health platforms, Industry 4.0 integrations, and data-sovereign AI that keeps European enterprise
data under European control. With EU Inc. and the EU AI Act reshaping the single market, we deliver the
technology powering these digital business models.
EU Inc. and Digital Business Models in Europe
With EU Inc. — the "28th regime" presented by the European Commission in March 2026 — entrepreneurs can
register a European company within 48 hours for under EUR 100 and operate across all 27 member states.
450 million consumers, one legal framework. The Commission projects 300,000 companies and 1.6 million jobs
in the first decade.
Data-Sovereign AI for European Enterprises — Agentic AI Without US Cloud Dependency
The EU AI Act, GDPR, and sector-specific regulations create a clear imperative: European enterprises need
AI under European data sovereignty. Our custom AI software runs on open-source models deployed on your
infrastructure or in GDPR-compliant European data centres, with no US cloud dependency and no vendor
lock-in.
KMU.DIGITAL — SME Digitalization and Mittelstand Digital Solutions
SME digitalization is a decisive lever for Mittelstand competitiveness. KMU.DIGITAL in Austria,
go-digital in Germany, and cantonal programmes in Switzerland make digital funding accessible from
strategy through implementation, including data-sovereign AI deployments.
BUILD UP — Software for the European Sustainable Building Community
The BUILD UP initiative of the European Commission drives building sector digitalisation: renovation
passports, EPBD data infrastructure, and heat pump integration into intelligent building automation.
All require capable software for building energy data capture, decentralised energy control, and
audit-proof ESG reporting.
Industry 4.0 — Smart Manufacturing Solutions for the DACH Region
Our Industry 4.0 solutions connect machine and sensor data with the business systems where decisions are
made. From predictive maintenance to real-time production monitoring, we build integration software that
turns machine data into actionable intelligence.
Zero Emission Buildings and the EPBD Directive — Software for Europe's Building Transformation
The revised EPBD (EU 2024/1275) sets binding milestones: member state transposition by May 2026, zero
emission building standard for all new public buildings from January 2028, and all new buildings from
January 2030. Existing buildings face binding renovation targets, while whole-life carbon assessment
becomes mandatory for new construction from 2030.
LoRaWAN sensor networks for real-time capture across building portfolios
Offline-capable building control with GDPR-compliant cloud connectivity
Automated ESG and WLC reporting systems for low-carbon buildings
Digital Health — Software for Connected Patient Care
European healthcare digitises under the strictest regulatory conditions — MDR, GDPR, and Germany's
Telematikinfrastruktur. We build eHealth solutions that integrate with hospital systems and secure data
exchange between clinical systems, from DiGA-compliant health applications to telemedicine platforms.
About WIENtech — Your Partner for Custom Software Development and Data-Sovereign AI in the DACH Region
WIENtech is a B2B software consultancy in Vienna with over ten years of experience delivering custom software development and enterprise AI solutions across Germany, Austria, and Switzerland. We manage the full software development life cycle — from requirements analysis and digitalization strategy through agile development to deployment and continuous improvement. Our data-sovereign AI capability extends this into autonomous AI agents that operate exclusively on your business data — no dependency on external providers. End-to-end software development from a single source: fewer vendor interfaces, faster time-to-market, and one technology partner who owns your project from first concept through live operations.
Core Competencies
Full-cycle software development — concept to go-live, maintenance, and continuous evolution
Connect your business systems — ERP, SAP, CRM, and legacy system replacement
FinTech and regulatory compliance — BaFin, FINMA, PSD2, GDPR-compliant platforms
Digital healthcare — MDR-compliant software, telemedicine, DiGA development
Smart home and building automation — LoRaWAN, Matter, works offline, manufacturer-independent
Data-sovereign AI — enterprise AI on your own infrastructure, open-source models, no external data sharing
Deep DACH market knowledge — regulation, SME digital funding, Mittelstand business culture
Technology Partner
Looking for an experienced technology partner in the DACH region?
Let's talk — from strategy and implementation through live operations.
Case Studies — Custom Software Development Projects Across the DACH Region
Four projects. Four industries. One methodology: full-cycle custom software development with deep domain expertise. From FinTech platform development and BaFin-relevant compliance to an application that works without internet for Deutsche Bahn AG and a complete platform re-architecture in PropTech.
Petar Stanchev
Contact person and IT consultant
Contact
Contact — Let's Discuss Your Software Project
Custom software development, system integration, AI for business, or digital transformation — whatever your challenge, we are ready.
Schedule a free 30-minute consultation and we will discuss how WIENtech delivers for your organisation.
