java English-speaking jobs in Mainz

Assemble, wire, and configure electrical systems for new robotics prototypes. Support hardware development, troubleshoot malfunctions, and document results while maintaining safety standards. Requires an Electrical Engineering or related degree/apprenticeship.

Senior Independent Sales Consultant to accelerate Rokt Ads growth in the DACH market. This role focuses on signing net-new advertiser logos across e-commerce, retail, and finance. Requires direct sales experience in DACH and German fluency.

Manage day-to-day operations for a student residence, leading the on-site team and ensuring high service and compliance standards. Oversee resident journey, drive occupancy, and manage site budgets. Requires strong German and English skills.

Competitive Programming Expert needed to build problems and graders for AI coding models. Tasks include writing algorithmic problems, correct/incorrect solutions in C++/Python, and designing robust test cases. Strong CP background is required.

Senior Agentic Engineer owns end-to-end Java backend services on AWS/K8s. Must have expert Java skills and practical experience running agentic workflows in production for high-throughput, low-latency systems.

Chief of Staff to the VP Platform Engineering, driving alignment and operational excellence across Core Platform teams. This role supports strategic execution, AI enablement, and cross-functional coordination.

Experienced professional needed to plan clinical activation and transition for a new military hospital. Responsibilities include developing CONOPS, managing timelines, and coordinating clinical processes for safe healthcare startup. Requires 5+ years in facility activations.

Senior Accountant manages financial accounting, including closing processes and team leadership within a corporate group. Responsibilities involve preparing financial statements under German GAAP, supporting US GAAP/IFRS reporting, and driving process improvements.

PhD student to develop methods and data analysis strategies for GHz speckle experiments in X-ray Photon Correlation Spectroscopy (XPCS). Will explore X-ray Speckle Visibility Spectroscopy (XSVS) and simulate experiments to assess and improve methods. Requires a Masters degree in physics and experience in scientific programming.

Senior Software Engineer for Smart Device Ecosystems & AI. Translate complex requirements into robust software using AI-assisted tools while maintaining full code ownership. Expertise in C++ or Go and service-oriented development is required.

Develop a transferable AI system for high-resolution urban air quality prediction by combining physics-based CTMs with probabilistic deep learning methods like neural processes. Focus on data infrastructure, architecture design, and uncertainty quantification.

Avalere Health seeks a qualified solicitor with 10+ years PQE to serve as General Counsel. Provide legal and compliance leadership, advise the Group Leadership Team, and lead the Legal and Compliance teams. Strong knowledge of UK, Europe, and US legal and regulatory landscapes is required.

Account Executive, SMB - DACH requires driving revenue expansion through relationship management with existing Docusign clients. The role involves upselling products, qualifying sales opportunities, and maintaining client loyalty in a fast-paced SaaS environment.

Senior BW/Data Expert to stabilize and modernize the SAP BW reporting environment. This role involves assessing legacy systems, designing future-state data models, and overseeing the data lifecycle for the Finance Data Platform. Requires 10+ years in SAP BW and data warehousing.

Postdoctoral Scientist needed in ultra-short pulse laser physics/optical frequency combs. Research involves developing VUV frequency comb lasers and feedback control systems for 229Thorium spectroscopy. Requires a PhD and expertise in laser stabilization and frequency combs.

Senior Backend Developer to design and build next-gen global learning platform services. Focus on high-performance microservices using Rust, integrating Go and Python. Requires 5+ years experience with Rust, PostgreSQL, and AWS.

Experienced SAP FI/CO Consultant needed to support SAP ECC and drive the transition to S/4HANA. Responsibilities include process optimization, configuration, and leading FI/CO sub-projects. Fluent German and strong English are required.

Drive end-to-end delivery of IS solutions enhancing business performance across Santen EMEA. Lead digital transformation projects, manage systems, and ensure GxP compliance while collaborating with global teams.

Expert DevOps Engineer for SAP Business Data Cloud (BDC) Sovereign Cloud activities. Focus on building and hardening internal environments, delivering BDC applications, and driving end-to-end deployment automation. Requires cloud delivery experience and knowledge of container orchestration.

Warehouse employee at Amazon loading conveyor belts, transporting, and staging deliveries. Duties include sorting parcels, lifting up to 15kg, and using scanners or forklifts. Must be 18+, proficient in German, English, or Arabic.