java English-speaking jobs in Mainz

Senior Project Monitor for a real estate lender. Assess and monitor German real estate developments across the finance lifecycle, reviewing budgets, programs, and risks. Requires technical expertise and fluent German/English.

Lead elderly American travelers on river cruises in the Rhein-Main-Danube area. Provide informative talks on history and culture while conducting guided tours and managing logistics. Fluent English is required.

Deliver simulator-based training in ship command and vessel maneuvering for nautical officers and captains. Responsibilities include maintaining training courses and documentation in English. Requires four years' experience as a Senior Officer or Captain.

Experienced Development Lead needed for renewable energy projects in Germany. Manage Solar/BESS projects from planning to permitting, coordinating with stakeholders. Requires experience in German project development, Solar PV/BESS, and local authority engagement.

Senior PV Project Manager responsible for planning and delivering photovoltaic projects from development to commissioning. Requires 3+ years in PV project management, experience with residential and C&I rooftop installations, and knowledge of VDE standards.

SAP SCM Consultant provides offshore solution design support for Supply Chain, Warehousing, and Logistics. Responsibilities include fit-gap analysis, design documentation, and testing support for S/4HANA SCM. Requires SAP S/4HANA SCM configuration experience.

Experienced Freelance Clinical Trial Liaison needed for EMEA support. Responsibilities include site contact, training, and driving trial execution and enrollment. Requires 6+ years of clinical operations experience, strong site liaison skills, and proficiency in English and German.

Develop and execute the growth strategy for the Swiss market, owning sales performance, budgeting, and partnerships across retail and e-commerce channels. Requires a degree in a related field and experience in Key Account Management.

Lead new client acquisition and retention in the International Private Bank. Advise on investments, banking, and wealth planning, managing client relationships to deliver complete wealth management solutions.

Senior Management Consultant specializing in Reward Strategy, Organisation Design, and Job Architecture. Partner with executives to solve complex workforce challenges and align people strategy with business outcomes. Requires fluency in German and English.

Servicemitarbeiter (m/w/d) for TUI BLUE, focusing on breakfast and backoffice duties. This role supports the global flagship hotel brand known for quality and modernity.

Galaxus seeks a Ramp-up and Integration Lead to manage the commissioning and testing phases of a new logistics system. The role involves coordinating technical activities between engineering, project management, and operations, tracking risks and defects, and ensuring smooth system implementation. Requires a technical degree or equivalent experience, strong automation knowledge, and fluency in English and German.

Chief Engineer for Data Center Engineering Operations ensures peak efficiency of electrical, mechanical, and fire/life safety equipment. Responsibilities include maintenance, emergency response, and managing projects to drive innovation and reduce costs.

Experienced Project Manager to lead a pan-European retail program rollout. Own the end-to-end project lifecycle, coordinating stakeholders across international markets. Requires experience in consumer electronics and retail landscapes.

Robotics Operator monitors and controls robots in live hotel environments. Responsibilities include real-time monitoring, remote teleoperation, ensuring safe task performance, and providing occasional on-site support. Strong interest in robotics and physical AI is required.

Director of Product Marketing and Market Research leads product marketing strategy and owns market research. This senior role defines positioning, drives adoption, and translates market intelligence into business strategy for a complex portfolio.

Project Manager Business Solutions SAP SD manages global IT initiatives, overseeing the SAP SD lifecycle and driving digital transformation. Requires 2+ years in enterprise IT/SAP, deep SAP SD knowledge, and fluency in English and German.

Design and implement AI-enabled workflows in a cloud-driven environment, focusing on Generative AI, LLMs, and AI agents. Take technical ownership of applied AI solutions, building enterprise-grade systems on modern AI platforms.

Senior Manager to lead complex Finance Transformation and Cloud ERP programs. Responsibilities include advising on finance processes, ERP strategy, and managing implementations across platforms like SAP S/4HANA, Oracle, Workday, and NetSuite. Requires leadership and fluency in German and English.

Senior Data Scientist to lead end-to-end ML model development. Requires 3+ years as a Data Scientist, strong software engineering skills (Python, SQL), and experience with open-source libraries. Good German and fluent English are required.