Based in Vienna, Austria
I am a highly experienced Senior IT-Consultant and Software Architect based in Vienna with over two decades of expertise in the software industry. Since 2006, I have been working as an independent developer and consultant, specialized in building robust enterprise solutions.
My core strength lies in Java and JEE development, complemented by a deep understanding of modern web technologies like Angular and React. I have a proven track record of leading complex projects, from designing microservices architectures to implementing business process management systems with Camunda BPM.
I am passionate about clean code, agile methodologies (Scrum), and delivering high-quality software that meets the specific needs of my clients, ranging from startups to major financial institutions and telecommunication providers.
Erste Digital | Vienna
Projects in the card payment environment:
float Software Development GmbH | Vienna
Founding a startup for "tailormade software", analysis and implementation of business processes. Development of the product "danube".
Johannes Schalhas - IT Consulting
IT Consultant, Software Developer and Architect, evaluation of new technologies, coaching and training of employees.
Phactum Softwareentwicklung GmbH
Senior roles in various large-scale projects, focusing on JEE, Spring Boot, and business process automation.
bwin Interactive Entertainment AG
Database development and optimization using PL/SQL.
tele.ring Telekom Service GmbH
Computer Science (Technische Informatik), part-time.
Completion with Matura (A-levels).
Realgymnasium (1989-1993) | Volksschule (1985-1989)
Developing card payment solutions for Erste Digital, awarded with the Mastercard Innovation Awards 2026.
Proof of Concept for third-party integration, front- and backend development for a major Austrian bank.
Implementation of a generic task list application for the internal service of a German financial provider.
Business analysis and implementation of a core software solution for process orchestration using Camunda BPM.
Replacement of an outdated business process engine for a German telecommunications provider using BPMN 2.0.
Design and implementation of a POS service platform for a large Austrian bank, ensuring high availability and secure transaction processing.
I am always open to discussing new projects, creative ideas, or opportunities to be part of your vision.
Information according to § 5 E-Commerce Act, § 14 Business Code, § 63 Trade Regulations and disclosure requirements according to § 25 Media Act.
Operator of the website:
Johannes Schalhas
IT Consulting
Neustiftgasse 72/3/6
A-1070 Wien, Austria
Contact:
Email: Click to reveal
Phone: Click to reveal
Object of the company:
IT Consulting and Software Development
Member of:
WKO (Austrian Federal Economic Chamber)
Applicable legislation and access to it:
Trade Regulations (Gewerbeordnung): www.ris.bka.gv.at
Supervisory authority/Trade authority:
Magistratisches Bezirksamt des VII. Bezirkes
EU Dispute Resolution:
Information on online dispute resolution: Consumers have the opportunity to submit complaints to the EU's online dispute resolution platform: http://ec.europa.eu/odr. You can also send any complaints to the email address given above.
