java English-speaking jobs in Mainz

Solar Project Manager to lead and optimize multifamily and C&I solar PV projects in Germany. Manage project delivery, coordinate teams, and ensure compliance with regulations and safety standards.

Supply Chain Quality Engineer for Printed Circuit Assembly (PCA) ensures manufacturing quality and reliability of PCBAs throughout the outsourced supply chain. Audits and develops PCBA suppliers, implements process monitoring strategies, and resolves technical issues.

Risk & Compliance Associate to support two partners in a global consulting firm. Responsibilities include executing projects, coordinating tasks, performing gap analyses, and developing policies and procedures. Requires experience in compliance monitoring, contract management, insurance portfolio management, and risk management frameworks.

Provides operational and administrative support to the European sales team. Maintains customer information, prepares sales documents, and coordinates order processing. Assists with customer inquiries, report preparation, and internal coordination tasks. Fluent in Chinese and English required.

Tenure-track professorship in Hybrid Solar Technologies at KIT Department of ETIT. Research focus on technological development of hybrid solar thermal energy technologies. Applicants should have expertise in photovoltaic-thermal hybrid technologies, solar thermal energy technologies, or other thermal energy technologies using renewable energies.

Senior C++ Engineer to develop and maintain a full stack service suite for a Local Positioning System (LPS) based on Ultra-Wideband (UWB) technology. Responsibilities include designing APIs, enhancing system testing, and extending services using modern technologies. Experience with C++, build systems, containerization, and testing frameworks is required.

The Antenna Chief Engineer leads the product journey for Active Antenna Systems, from concept to lifecycle management. This role drives system architecture, including array geometry, beamforming, and spatial radiation performance. The Chief Engineer aligns and leads multidisciplinary engineering functions, ensuring compliance with industry standards.

Experienced PACS Technical Consultant needed for 6-month contract (likely to extend). Install, configure, and optimize PACS solutions, including storage, modality mapping, and life cycle management. Support data migrations, UAT, and go-live activities. Strong DICOM, RIS, HL7, and Windows/Linux experience required.

Computational Scientist needed for Biomarker Development team. PhD in Life Sciences, Biology, or related field required. Strong experience analyzing biomarker and biological datasets in a scientific or clinical context. Proficiency in R and Python for data analysis and visualization.

Principal Scientist - Quality Control Chemical Testing Lab will ensure timely completion of work, adherence to safety and GMP compliance, and execution of activities in accordance with SOPs, methods, GDP, and regulatory guidelines. Responsibilities include data review, deviation identification and investigation, continuous improvement, cross-functional participation, and audit support.

Creative Strategist to develop innovative Twitch-native creative concepts for brand campaigns. Translate client briefs into impactful ideas, present to clients, and collaborate with cross-functional teams.

Manage and enhance private cloud infrastructure at CGM. Provision, automate, and integrate servers into private cloud environments. Utilize tools like Helm for automation and Ceph for storage solutions. Create documentation, implement monitoring, and ensure stable platform operation.

Lead RF design, simulation, and integration for multi-band wireless systems supporting autonomous robots and drones. Develop robust communication layers and radio architectures for swarming and distributed sensor fusion. Integrate anti-jamming and secure RF techniques to ensure reliable connectivity in contested environments. Collaborate with hardware, software, and AI teams on RF hardware, firmware, and protocols.

Senior Fullstack Software Developer sought for a role combining .NET/C# backend development with Angular/TypeScript frontend technologies. Requires 5+ years of experience in fullstack development, strong understanding of distributed systems and databases, and proficiency in clean coding practices. Must be fluent in German (C1/C2) and English.

Partner to lead new business development and project delivery for a growing life sciences strategy consulting firm. Requires 5-10+ years of top-tier strategy consulting experience, a strong network in the pharma/biotech/medtech ecosystem, and fluency in German.

Leads and manages the global engineering organization across US, EMEA, and APAC, responsible for new product development, sustaining engineering, and application engineering. Ensures successful development and commercialization of innovative polymer processing technologies. Manages engineering teams and budgets, driving innovation in melt delivery, filtration, pelletizing, extrusion dies, and sustainable solutions.

Manages cloud network operations with a focus on automation and DevOps principles. Requires several years of experience in cloud and network architectures, strong MPLS and BGP skills, and CCNP Service Provider certification.

Provides support to data centers and Points of Presence (POPs) for installation, repair, and maintenance activities. Requires deep knowledge of physical layer rack and stack configurations and experience with telecom/network equipment. Performs site surveys, audits, and coordinates with vendors and technicians.

Research Assistant (m/f/d) for a 3-year limited-term position at the Professorship for Hydro-mechanics. The position involves numerical simulation of microbial transport in porous media and carbonate mineral precipitation. Requires a completed university degree in a relevant field and proven knowledge of reactive transport in porous media.

Lead the technical vision and development of a platform connecting renewable energy production and consumption. Design, evolve, and scale core systems, including trading infrastructure and optimization engines. Build and manage the engineering organization, driving data and intelligence capabilities.