backend developer English-speaking jobs in Klosterneuburg

Develops, verifies, and documents fluid delivery systems. Provides technical designs for chemical fluid systems based on modeling and calculation data. Ensures system compliance with engineering requirements and safety standards.

Project Administrator (maternity cover) to support a research cluster in Human Evolution, Ancient DNA, and Archaeological Science. Responsibilities include personnel management, project management, communication, and administrative tasks. Requires several years of office/administrative experience, excellent IT skills, and fluency in English and German.

Leads the strategic direction and long-term architecture of On's Performance Product Portfolio (Running, Outdoor, Athletes). Provides visionary and strategic leadership for all performance verticals, ensuring alignment with On's global mission and business objectives. Builds and scales a high-performance team, fostering an environment of inclusivity, development, and accountability.

SAP Fioneer seeks a Lending Solutions Expert to support customer requests, design solutions, conduct product demos, and contribute to Go-to-Market activities. Requires a Master's degree and 1-3 years of experience in financial services with exposure to IT strategy/transformation, in-house banking transformation, or (IT) program/project management. Strong analytical skills and business judgment are essential. Fluency in English is required, German is a plus.

Ensures quality and regulatory compliance while driving process effectiveness and efficiency. Coordinates cross-functional projects in an international matrix organization, with a focus on production transfers and AI-development. Guides employees through the investigation of nonconformities and the development and implementation of solutions within a CAPA system.

As a Staff Engineer Mixed Signal Layout, you will plan, estimate, and execute mixed-signal floorplans for IP macros and subsystems. You will drive analog full-custom layout implementation and perform layout verification. You will collaborate with circuit designers and layout teams to ensure seamless integration.

Senior GEOS Application Engineer / Technical Lead will drive both change delivery and operational stability for GEOS. Responsibilities include end-to-end delivery of GEOS enhancements, UAT execution, incident/problem management, and contributing to GEOS modernization. Requires strong GEOS experience in enterprise application engineering with accountability for Run + Change (at least 3 years), professional German and English language, and proven track record in UAT/go-live and incident handling.

BRUNA seeks a creative Social Media & Content Creator to develop and manage the brand's social presence. Responsibilities include creating, curating, and publishing content across platforms, engaging with the community, and collaborating with creators. The ideal candidate has 2+ years of experience with lifestyle brands, a strong understanding of social media platforms, and a passion for visual storytelling.

The Global Escalation Manager manages complex customer escalations, ensuring timely resolution and customer satisfaction. This role requires strong technical knowledge of the IXOPAY platform, excellent communication skills, and the ability to collaborate with multiple teams.

Senior Global Medical Advisor needed for temporary position until April 30, 2028. Responsibilities include managing publications, supervising the literature database, revising medical documents, and answering medical inquiries. Requires a medical or scientific degree and experience in critical care, regulatory affairs, clinical development, or drug safety. Fluency in English and strong communication skills are essential.

Accountant needed to manage Order-to-Cash (O2C) processes, billing, and General Ledger. Support financial reporting, audits, and compliance with Austrian authorities. Requires SAP S/4HANA, Jira, and Excel proficiency, as well as fluency in German and English.

Freelance Senior Software Engineer needed to craft developer prompts, adapt content, and write model responses. Must have 2+ years of experience in software engineering, technical research, or educational content development and proficiency in languages like Python, JavaScript, Java, or C++.

Gain hands-on experience in investment banking through a 10-week virtual internship. The program includes two weeks of intensive training followed by eight weeks of work on live projects with a Managing Director or Partner at a boutique investment bank.

Coordinates and delivers a range of events and activities at Schloss Leopoldskron. Manages the events calendar, prepares offers and contracts, and leads site inspections and client meetings. Acts as a key point of contact for guests and supports clients on event days.

Talent Acquisition professional responsible for talent evaluation, job advertising, talent prospecting, and staffing planning.

Application Support Engineer providing 1st and 2nd line support to a global client base with a focus on German speaking clients. Requires commercial experience in application/technical support, Linux knowledge, Python scripting, SQL knowledge, and fluent English and German.

Leads the strategic direction and operational excellence of AT&S's SAP/ERP domain. Responsible for strategy development, governance, and execution of SAP/ERP initiatives and transformations. Manages a team of IT professionals and ensures alignment with corporate and business requirements.

Investment Principal to contribute to investment strategy, manage deal pipelines, and support portfolio company development. Requires 10+ years of experience in venture capital, private equity, or M&A with a strong track record in investment management and deal execution.

Develop and implement earned media strategies for motorsports and aviation projects across Red Bull's global network. Drive brand attribution by engaging media and curating storylines. Collaborate with country teams to elevate media opportunities and manage relationships with marketing teams and external stakeholders.

CRM Manager to develop and execute lifecycle campaigns, monitor communication channels, and analyze customer interactions to optimize engagement strategies in the Polish market. Requires 4+ years of multi-channel campaign management experience, strong analytical skills, and experience with CRM tools. Fluent English is mandatory.