530 English-speaking jobs in Vienna

Collaborate with data teams to develop and deploy ML solutions on Databricks using Python, MLflow, and feature engineering. Implement end-to-end MLOps, integrate models with data pipelines, and contribute to reusable templates and documentation.

Freelance Test Engineer needed for web application testing in a financial services environment. Experience with manual and automated testing, API testing, Cypress, and troubleshooting is required.

QA Engineer for a multi-country conversational AI product. Responsibilities include planning and executing UI and AI-driven conversational flow testing, writing automated tests, and contributing to AI evaluation workflows. Requires experience in manual and automated testing, web and mobile test automation, and structured testing environments.

QA Engineer will design and execute automated test suites, ensuring coverage across web and mobile platforms. Experience with chatbot testing, mobile automation, and scripting languages (JavaScript, Python, or Kotlin) is required.

Develop and deploy machine learning models for forecasting, optimization, and decision support in electricity trading. Collaborate with data engineers and ensure models are reproducible, testable, and monitorable.

Lead a team of distributed engineers to optimize Ubuntu for the latest hardware platforms. Engage with commercial partners to deliver a seamless Ubuntu experience. Manage a team of software engineers, coach, mentor, and provide feedback. Ensure timely delivery on project milestones and uphold quality and reliability standards. Collaborate with other teams to align on product architecture and roadmaps.

Plan, launch, and optimize paid media campaigns across Meta, TikTok, YouTube, Pinterest, and more for two global fashion brands. Manage a regional ad budget, track KPIs, and continuously optimize campaigns to drive awareness, engagement, and in-store turnover.

Senior .NET Backend Engineer will design, develop, and maintain scalable backend systems and APIs. Collaborate with cross-functional teams to translate requirements into technical solutions. Provide technical guidance and lead code reviews. Troubleshoot issues and participate in on-call rotation.

Technical Project Manager for client-facing datacenter projects. Manages full project lifecycle, from client onboarding to technical delivery and budget oversight. Requires 3+ years of datacenter operations experience, technical client interaction, and proficiency with ITSM tools.

Study Start-up Manager to drive the initiation phase of clinical studies in minimally invasive, image-guided therapies. Responsibilities include protocol finalization, site activation, regulatory submissions, and cross-functional collaboration. Requires a university degree in a relevant field, 3-5 years of clinical research experience, and proficiency in GCP, ISO 14155, and Microsoft Office.

Design, develop, and maintain advanced features for the iOS platform. Collaborate with cross-functional teams to deliver a user-centric trading experience. Ensure code quality through testing and own and enhance your area of the app.

Software Engineer to design, develop, and maintain software for quantum key distribution (QKD) systems. Responsibilities include cybersecurity enhancement, system optimization, and process improvement. Experience in systems programming languages (C, C++, Rust), secure software development, and one or more of the following areas is preferred: security-sensitive systems, cryptography, fail-safe systems, distributed systems.

Senior Data Scientist with 3+ years of experience in data science, machine learning, or data engineering. Responsibilities include designing, implementing, and optimizing data science projects, collaborating with engineers, and communicating results to stakeholders. Must have strong Python skills and experience with code version control (Git).

Design and develop high-performance electronics for quantum key distribution (QKD) and optical payloads for space and ground systems. Own end-to-end hardware development from system architecture to board-level implementation and lab validation. Collaborate with optical, FPGA, and software engineers to define system requirements and interfaces.

Develop and improve Quantum Key Distribution (QKD) payloads for space applications. Contribute to subsystem design, collaborate with electronics and thermo-mechanical engineers, and execute laboratory testing. Prepare technical documentation and support environmental and space-qualification campaigns.

Define, evaluate, and ensure compliance with cybersecurity requirements for space and ground systems. Engineer and design safety- and security-critical requirements for satellite missions. Manage subcontractors and drive communication with project partners.

As a Product Assurance Engineer, you will define and implement a tailored product assurance strategy for space technology maturation programs, ensuring alignment with ECSS standards and customer requirements. You will lead PA activities across the product lifecycle, participate in design reviews and risk assessments, and conduct audits and inspections to ensure quality requirements are met.

We are seeking ambitious entrepreneurs to build and scale AI startups. You will own your company, receive funding support, and benefit from mentorship from unicorn founders. Must be based in Europe or the Americas and fluent in English.

Senior Software Engineer to build and maintain high-performance, scalable backend systems using Python. Develop core trading infrastructure, design APIs, and work with databases. Lead technical initiatives and drive architectural decisions.

Senior Product Manager (Product Marketing) will guide a cross-functional team to success, developing and implementing features for the shop, checkout, payments, and marketing aspects of the app and web platform. Responsibilities include defining OKRs, identifying opportunities for improvement, collaborating with designers and engineers, and advocating for the product vision. Requires 4+ years of experience in product management, excellent communication skills, and proficiency with project management tools.