java English-speaking jobs in Mainz

The Exzellenzcluster SCALE seeks an individual to coordinate office and financial administration. Duties include office management, personnel and financial administration, budget management, and administrative support.

The General Manager, Europe will lead the company's expansion across the region, developing and executing growth strategy, establishing regional operations, and building partnerships.

Implementation/Client Onboarding Specialist to manage end-to-end implementation projects for veterinary customers in Germany, Austria, and Switzerland. Deliver remote and onsite training, configure software, and build relationships with stakeholders. Fluency in German and English required.

Intern in the CEO Office will work on international expansion, process automation, and operational excellence initiatives. Must have completed two internships in a fast-paced environment and be solution-oriented.

As an Enterprise Corporate Sales Account Executive, you will develop and close new business and expand Docusign's footprint by selling products and services within a defined territory. You will be responsible for exceeding sales quotas, managing deals, and collaborating with internal teams and partners.

PMI Manager to drive growth and integration strategy for a cybersecurity and compliance company. Develop cross-selling strategies, lead post-merger integration activities, and implement management software. Requires 5+ years of relevant experience, operational PMI expertise, and fluency in German and English.

Lead a product pillar strategy for a critical product area, driving deep multi-product penetration across customer employee bases. Build and coach a product team to deliver unified, AI-enhanced, and scalable experiences.

Lead DevOps Engineer to design, own, and scale the multi-cloud backbone of IQA, an AI-powered SaaS solution. Define and execute the multi-cloud infrastructure roadmap, own the technical strategy for Kubernetes-based deployment infrastructure, and build, deploy, and monitor deployments across various cloud providers and on-premise setups. Engineer DevOps tooling and automation layers, own the infrastructure strategy including data, CI/CD, and orchestration, and develop and optimize APIs and data processing systems using Python. Collaborate with product and engineering leadership to translate business requirements into robust infrastructure capabilities.

Full Stack Engineer to independently implement features end-to-end for a live financial consulting platform. Requires 4+ years of experience with Node.js, TypeScript, PostgreSQL, and Next.js or NestJS.

Senior Protection & Secondary Design Engineer specializing in Medium Voltage (MV) systems. Designs protection schemes, develops secondary schematics, selects relays, and configures, tests, and commissions protection systems. Requires 7-10+ years of experience in protection engineering and secondary system design (MV level).

Senior Principal Software Engineer will lead Zalando's migration to React Native, solving complex engineering challenges and ensuring a scalable, secure transition. You will champion a performance-first culture, mentor engineers, and architect core app features with performance as a primary consideration. Extensive experience developing large-scale React Native applications and deep architectural fluency in the new React Native architecture are required.

Ensure the reliable operation of Linux and infrastructure platforms for a large e-commerce store. Collaborate with development and DevOps teams to maintain a scalable and high-performing environment. Responsibilities include server administration, configuration management, virtualization, monitoring, and database management.

Lead and mentor a team of developers, driving architectural decisions and coding standards. Design, develop, and maintain scalable web applications, architecting complex systems for reliability and security. Conduct code reviews, develop automated tests, and collaborate with teams to deliver high-quality solutions.

Machine Learning Engineer to develop and optimize AI models for autonomous driving. Requires MSc/PhD in Computer Science, Robotics, or equivalent experience with TensorFlow or PyTorch, C++, and Python.

Senior Software Engineer needed to design, maintain, and improve backend systems for a growing technology company. Focus on shared services, APIs, and data-driven workflows. Experience with system design, cloud environments, and clean code is required.

Develop and enhance the user interface for control center software, ensuring optimal management of public transit operations. Contribute to the design and implementation of use cases, develop JavaFX components, and participate in agile development processes.

Develop control algorithms for industrial systems and contribute to load analysis and evaluation as part of system design, validation, and optimization.

Working student (m/f/d) for UX Design at ABB Robotics in Gilching. Design a new interface from scratch, workflows, and layouts. Collaborate with engineering and product teams.

Digital Verification Engineer to validate functional blocks and subsystems for optical fiber transmission solutions. Requires expert-level experience in digital design verification, SV-UVM, SVA, and C++.

Leads a distributed team of engineers focused on resolving software defects and delivering bug fixes for open source software. Manages team performance, provides coaching and mentorship, and collaborates with other engineering teams. Requires experience with software development using C, C++, Go, Python, and version control systems.