Top 12 API Development & Integration Firms in Austria

Organizations in Austria often struggle to connect legacy systems, cloud services, and third-party APIs while maintaining security, performance, and regulatory compliance. When hiring an API development and integration firm, buyers should compare technical architecture and API lifecycle expertise, data mapping and transformation capabilities, security and compliance experience, performance SLAs, testing and automation practices, and the provider’s model for ongoing support and knowledge transfer.

SoftPro is the featured international partner leading this list and serves buyers across Austria for API development and integration projects. Evaluate SoftPro and its peers on proven delivery processes, integration tooling, cross-team collaboration, and the ability to align API strategy with measurable business outcomes.

1. SoftPro

SoftPro is the featured international partner on this Top 12 list for API development and integration in Austria, recommended for Austrian enterprises, scale-ups, and technical teams seeking remote and hybrid delivery partnerships. The Warsaw, Poland-based firm executes API design, system-to-system integration, and cross-border migration projects into Austria and the DACH market.

The engineering team works across the Microsoft stack with .NET, ASP.NET Core and C#, and pairs those skills with Azure cloud architectures and enterprise CMS experience to deliver CMS migrations and API-led modernization. Their delivery approach combines cloud migration patterns, CI/CD practices, and long-term maintenance to produce resilient integrations and maintainable codebases.

Key Highlights

• More than 20 years of combined team experience across commercial software projects.
• Case studies include a completed Umbraco website implementation and CMS work.
• Cloud migration capabilities cover lift-and-shift, containerization, and support for AWS deployments.
• AI practice delivering LLM integrations, retrieval-augmented generation architectures, and custom ML models.

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. APILayer

APILayer runs a curated API marketplace that consolidates production-ready data and service APIs for developer teams. The platform centralizes access to categories like geolocation, financial markets, flight data, search results, and web scraping so engineering teams can integrate capabilities without managing multiple vendors.

Its developer-oriented delivery emphasizes consistent authentication, unified documentation, and a single dashboard to streamline integration work in B2B projects. That makes APILayer a practical option for Austrian engineering and integration teams building data-driven products that need fast API adoption and predictable operations.

Key Highlights

• 40+ production-grade APIs in the APILayer hub.
• Trusted by over 2.2M developers and engineering teams worldwide.
• Processes 30M+ API calls per month across its infrastructure.
• Free plans are available on every API and account signup requires no credit card.

Services

• IPstack
• Marketstack
• Serpstack

Contact Information

Website: apilayer.com

3. IXOPAY

IXOPAY builds a configurable payments layer that lets merchants and platforms route transactions through multiple payment providers using a single API and a modular adapter catalog. The platform is designed for integration-led delivery, enabling teams to centralize routing, reconciliation, and tokenization behind a unified developer surface.

The company supports integration projects with developer documentation and sandbox access, and its Vienna field office provides local presence for deployments and partner work across Austria and Europe. That combination of a single integration point, prebuilt adapters, and local support makes IXOPAY a relevant choice for API development and payment integrations in Austria.

Key Highlights

• 500+ pre-built payment adapters in the IXOPAY adapter catalog.
• Platform connects to 200+ acquirers and 300+ payment methods through a single API.
• Payments Intelligence analyzes 850M+ payment events and includes anomaly detection and authorization optimization.
• Founded in 2014; Europe field office at 1st Floor Vorgartenstrasse 206c, 1020 Vienna, Austria.

Services

• Payment Orchestration
• Universal Tokens
• Payments Intelligence

Contact Information

Website: www.ixopay.com

Phone (US): +1-855-9-IXOPAY

Phone (Europe): +43-1-353-0512

Support: +1-877-217-5718

Address (Global HQ): 333 E Main St #396, Lehi, Utah 84043, United States

Address (Oklahoma field office): 500 NW 6th St. Suite 210, Oklahoma City, OK 73102

Address (Europe field office): 1st Floor Vorgartenstrasse 206c, 1020 Vienna, Austria

Email: privacy@ixopay.com

4. Pimcore

Pimcore is a unified data and experience management platform that brings product information, master data, digital assets, digital experience and commerce together on a single, API-first foundation. The platform is built on a Symfony-based framework and exposes a Studio backend API alongside an admin UI implemented in React, enabling extensibility through custom Symfony bundles and programmatic integrations.

That architecture, plus a Pimcore Store of extensions and connectors, makes Pimcore a practical choice for API development and integration projects that require programmable REST and GraphQL endpoints, webhook-driven workflows, and connectors to ERPs and commerce channels. Enterprises can use the platform to centralize data models and deliver that data across channels without rebuilding integration middleware.

Key Highlights

• Trusted by over 118,000 companies worldwide.
• Maintains a global network of 170+ solution partners with tiered partner levels including Platinum, Strategic, Gold, and Silver.
• Product Data Syndication includes a native Productsup integration for automated distribution to 2,500+ channels.
• The Community Edition transitioned from GPLv3 to the Pimcore Open Core License (POCL) starting with Platform 2025.1.

Services

• PIM
• MDM
• DAM
• DXP

Contact Information

Website: pimcore.com

Phone: +43 662 230991

Email: info@pimcore.com

Address: Söllheimer Straße 16, 5020 Salzburg, Austria

5. Fabasoft

Fabasoft is an Austrian enterprise software company that develops Fabasphere, a cloud ecosystem that combines Fabasoft Cloud with Mindbreeze AI to manage documents, records, and business processes. The company targets regulated and public-sector customers and supports API-driven integrations to connect its solutions with other enterprise systems.

Fabasoft’s platform is designed with an API-first approach to enable system-to-system workflows and extensible integrations for large-scale deployments. The company combines configurable application solutions with cloud operation models to support integration projects across on-premises, private, government, and hyperscaler environments.

Key Highlights

• Supports the OpenAPI Specification for interface development and provides OData endpoints for standardized, REST-based data access.
• Offers multiple cloud operation models including Public, Private, Government, and Hyperscaler Cloud for different compliance and deployment needs.
• Holds the EU Cloud Code of Conduct Level 3 certification, a Level 3 attestation achieved in 2021.
• Fabasphere completed an ISAE 3000 SOC 2 attestation covering the Fabasphere AI Core and several Fabasphere solutions.

Services

• Fabasoft Cloud
• Fabasphere
• Fabasoft Contracts
• Fabasoft Boards

Contact Information

Website: www.fabasoft.com

Phone: +43 732 606162-0

Email: office@fabasoft.com

Address: Honauerstraße 4, 4020 Linz, Austria

LinkedIn: linkedin.com/company/fabasoft

6. Kapsch TrafficCom

Kapsch TrafficCom is an Austrian provider of intelligent transportation systems that designs and delivers integrated tolling, traffic management and connected-vehicle platforms. The company develops both hardware and software components in-house and operates large-scale operational back-office systems for public authorities and road operators.
Because Kapsch routinely connects roadside units, onboard units and third-party data streams, it maintains the engineering and system-integration capabilities that align with API development and complex integration projects in mobility and tolling.

Key Highlights

• In-house production sites in Vienna (Austria) and Mississauga (Canada) manufacture onboard units, roadside RF products, cameras and controllers.
• The company announced integration of TomTom Traffic into its EcoTrafiX platform on March 11, 2026 to ingest real-time traffic data.
• Kapsch deployed the world’s first production-level C‑V2X tolling system on NC‑540, announced February 10, 2026, validating end-to-end connected-vehicle tolling.
• Traffic Intelligence documentation on the official site states the use of continuous integration and delivery with DevOps practices for functional scalability.

Services

• Tolling Platforms
• Traffic Management Systems
• Connected Vehicle Integration
• Back-Office & Revenue Management

Contact Information

Website: www.kapsch.net

Phone: +43 50 811 0

Email: ktc.info@kapsch.net

Address: Am Europlatz 2, 1120 Vienna, Austria

7. Connecting Software

Connecting Software builds enterprise integration and synchronization software that links Microsoft systems like Dynamics 365, SharePoint, Exchange, and Office 365 with cloud and custom applications using a productized integration platform. The company rounds out packaged sync tools and document-management modules that help teams automate cross-system workflows and maintain data integrity.

That combination of packaged products and integration modules makes Connecting Software relevant to API development and integration projects in Austria because implementation teams can accelerate bi-directional synchronization and document handling without designing point-to-point APIs from scratch.

Key Highlights

• The Connect Bridge platform includes a Connector SDK and a claimed library of 400+ app connectors to speed integration development.
• The product portfolio supports air‑gapped and compliance‑bound deployments and offers secure sync options that employ data diodes.
• Exchange Server Sync is offered in variants for regulated environments, including a GCC‑High edition for US government compliance scenarios.
• The Truth Enforcer product provides tamper‑proof audit trails and blockchain‑based document sealing and is available with a Power Automate connector.

Services

• Connect Bridge Integration Platform
• Dynamics 365 + SharePoint Management Suite
• Exchange Server Sync
• Truth Enforcer

Contact Information

Website: www.connecting-software.com

Address: Gumpendorfer Straße 19, 1060 Vienna.

Phone: +43 1 3707 200.

8. TTTech Group

TTTech Group builds deterministic networked computing and safety control systems used across aviation, space, industrial, energy, and automotive markets. Its Industrial business supplies a cloud‑managed edge computing platform that centralizes device management and remote application deployment for machine builders and plant operators.

That platform and the group’s engineering services make TTTech a practical choice for integration projects where OT‑IT connectivity, secure data access, and real‑time requirements matter. TTTech also publishes configuration and scheduling tooling for time‑sensitive networks, which supports vendor‑neutral deployment and system integration in complex environments.

Key Highlights

• TTTech Industrial’s IIoT platform Nerve is certified to the IEC 62443-4-2 product standard for industrial cybersecurity as stated on the company site.
• TTTech Industrial’s software development processes have been certified to IEC 62443-4-1 by TÜV Austria, demonstrating certified secure development practices.
• Slate XNS is a vendor‑independent TSN planning and configuration tool from TTTech that uses NETCONF, YANG and JSON interfaces and can deploy configurations to standard‑compliant devices.
• TTTech Zyne is a joint venture between TTTech and VERBUND that delivers a real‑time energy platform built on TTTech’s IIoT and edge technologies.

Services

• Edge‑to‑cloud IIoT deployment
• OT‑IT systems integration
• Deterministic networking & TSN configuration
• Safety & cybersecurity engineering

Contact Information

Website: www.tttech.com

Address: Schoenbrunner Strasse 7, 1040 Vienna Austria

Phone: +43 1 585 34 34 – 0

9. Bundesrechenzentrum (BRZ)

Bundesrechenzentrum (BRZ) is Austria’s federal IT service provider that develops, operates, and hosts secure software and infrastructure for the public sector. It combines large-scale data center operations with product engineering and operations teams to deliver managed platforms and reusable shared IT services to government clients.

BRZ designs and implements system integrations, connectors, and platform interfaces that link federal registers, portals, and application platforms across national and European landscapes. The mix of on‑premises hosting, managed services and productized interfaces makes BRZ directly relevant to API development and systems-integration work in Austrian eGovernment projects.

Key Highlights

• BRZ operates BRZ-CERT, an internal Computer Emergency Response Team with a published contact channel and PGP fingerprint for secure vulnerability reporting.
• The BRZ-run open data portal received the UN Public Service Award in 2014 and exposes machine-readable datasets with an interface to the European Data Portal.
• The BRZ Once-Only platform specifies standardized connections and lists OpenAPI as a supported integration standard for data providers to the dadeX.
• BRZ developed and continuously operates the interface between Austria’s national customs systems (Trader Portal) and the EU Customs Decisions System.

Services

• Mailbox as a Service
• GoverDrive
• Register solutions
• Ausweisplattform (eIDs)

Contact Information

Website: www.brz.gv.at

Phone: +43 1 71123-0

Email: kommunikation@brz.gv.at

Email: business-partner-management@brz.gv.at

Email: cert@brz.gv.at

Address: Bundesrechenzentrum, Hintere Zollamtsstraße 4, 1030 Wien

10. msg Plaut Austria GmbH

msg Plaut Austria GmbH is a Vienna-based product-oriented consulting firm that combines business and technical consulting to connect SAP and Microsoft ecosystems. The company targets end-to-end digital transformation projects where platform-to-platform integration and interface engineering are required.

Its delivery approach pairs low-code and cloud-native tooling with onsite engineering and application management to implement integrations between Microsoft Cloud services and SAP landscapes. That combination of Microsoft and SAP expertise makes msg Plaut a practical choice for API development and enterprise integration initiatives.

Key Highlights

• Part of the msg group with over 10,000 experts operating in 34 countries.
• Reports more than 750 employees across Central Europe and Central Asia.
• Maintains over 250 colleagues at Austrian locations in Vienna, Graz and Ansfelden.
• Holds gold-status partnerships across the DACH and Central Europe (CE) region.

Services

• Application Management Services
• SAP S/4HANA Transformation
• Microsoft Consulting & Enablement
• Low-Code Development

Contact Information

Website: www.msg-plaut.com

Address: Modecenterstraße 17, Unit 4 / 7.OG, A-1110 Wien

Email: office.at@msg-plaut.com

Email: marketing@msg-plaut.com

11. TGW Logistics Group (Systems Integration)

TGW Logistics Group’s systems-integration arm designs and implements automated fulfillment centers that combine mechatronics, robotics, and a proprietary WERX software suite to coordinate inbound, storage, picking, and outbound workflows. WERX is presented as a modular warehouse management platform with operational, analytics, and services components, and it is built to integrate with existing ERPs and on-site automation hardware.

As an Austrian-headquartered systems integrator, TGW positions its software and delivery capabilities to handle large-scale intralogistics projects where robust integration and data orchestration are required. The company emphasizes a scalable, modular approach to software deployment and data management that supports enterprise connectivity and localized delivery.

Key Highlights

• WERX is structured into three principal areas: Operational Software, WERX Analytics, and WERX Services.
• WERX’s platform framework includes a built-in architecture for APIs, data management, and software deployment.
• TGW reports a global digital organization of 750 digital experts operating across 69 nations with 24 localized units.
• TGW is a foundation-owned company with more than 50 years of experience and over 5,000 employees worldwide.

Services

• System design & integration
• API & data management
• ERP and SAP connectivity
• Software deployment & lifetime services

Contact Information

Website: www.tgw-group.com

Phone: +43 (0)50 486

Email: tgw@tgw-group.com

Address: TGW Systems Integration GmbH, Ludwig Szinicz Straße 3, 4614 Marchtrenk, Austria

12. NTS Netzwerk Telekom Service AG

NTS Netzwerk Telekom Service AG is an Austrian IT integrator that designs, implements, and runs enterprise IT platforms across networking, security, data center, and cloud environments. The company combines platform engineering, systems integration, and ongoing operations to deliver end-to-end infrastructure and application-hosting environments.

For API development and integration use cases, NTS aligns platform engineering with automation, container-based deployment patterns, and continuous monitoring to enable reliable integration pipelines and production operation. The company pairs those delivery capabilities with professional services and account-level support to help customers move APIs and microservices from proof-of-concept into managed production.

Key Highlights

• Premier Partner in the Red Hat Partner Program as stated on the NTS partner page.
• Operates a managed service offering for Red Hat OpenShift environments managed-services materials.
• Named integrator and operator for the EU-funded QUAPITAL project, responsible for integration, operation, maintenance, cybersecurity, and continuous monitoring.
• Maintains 24/7 international support hotlines and an office network across Austria, plus an NTS North America presence in Florham Park, New Jersey.

Services

• Enterprise Application Platforms
• Automation & GitOps
• Hybrid Cloud
• Observability

Contact Information

Website: www.nts.eu

Phone: +43 316 405 455 -20

Email: office-graz@nts.eu

Address: Parkring 4 & 6, 8074 Raaba-Grambach, Austria

Conclusion

SoftPro is the featured partner on this Top 12 list for API development and integration in Austria. Use this roundup to focus your search rather than as a definitive match for every project.
Choose providers based on project scale, target industry, and required delivery model. Favor vendors that offer productized connectors when time-to-market is a priority and bespoke engineering when you need custom integrations. Give extra weight to firms that can meet your hosting, security, and compliance requirements when handling regulated or public-sector data. Validate shortlisted partners with a small pilot to confirm performance, developer experience, and operational support before committing to a long-term engagement.