java English-speaking jobs in Mainz

Portfolio Advisor will execute the Wholesale sales strategy with Financial Intermediaries in Germany and Austria. Responsibilities include dedicated client coverage, relationship building, and contributing to sales meetings and strategy development.

This fast-track program offers early leadership exposure across strategy, products, customers, operations, and sales within a global industrial manufacturing organization. Requires a technical or business degree and fluency in English and German.

Senior Project Manager role requiring five years of experience leading strategic or regulatory projects in a top financial institution. Must understand end-to-end banking processes and possess strong IT proficiency. English fluency is essential.

Senior Project Manager to lead complex data centre and mission-critical projects. Requires 7+ years managing multidisciplinary projects, strong client-facing skills, and fluency in German and English.

Senior Business Development Manager to develop sales strategies for Hong Kong and European markets. Responsibilities include identifying new business in airport, port, and transport sectors, managing negotiations, and building key regional accounts. Requires 5+ years of overseas sales experience.

Site Manager responsible for managing BESS projects from RTB to COD as Owner's Representative. Coordinates EPC contractors, suppliers, and stakeholders to ensure on-schedule delivery and commissioning. Requires a relevant degree and 3+ years of project management experience.

Oversee regulatory compliance for outsourcing and third-party arrangements. Coordinate risk assessments and support governance throughout the outsourcing lifecycle. Requires experience in regulated financial services and familiarity with outsourcing frameworks.

Procurement Specialist for Facility & Construction Services drives the Sales Market procurement strategy. Responsibilities include securing supplier bases, managing agreements, and ensuring compliance with global standards. Requires 3+ years in procurement.

Manages warehousing quality control, standardizes processes, and improves efficiency. Develops and implements quality control strategies, ensures compliance with standards, and reduces error rates. Supervises on-site operations, identifies risks, and promotes cross-departmental collaboration.

Workstream Lead – Process Equipment is responsible for planning and executing CQV activities for GMP process equipment across the entire process chain. This role provides technical leadership for equipment qualification and manages cross-functional interfaces. Native German proficiency is mandatory.

Senior Project Development Lead will manage large-scale battery energy storage projects through development, focusing on grid connection, permitting, and stakeholder engagement.

Lead Digital First partnerships with large, digitally-native companies, driving growth through AI-powered Search and YouTube solutions. Requires 15 years in digital sales leadership and fluency in German and English.

Service Technician provides on-site support for the operation and maintenance of industrial fluid systems at a customer's manufacturing facility in Offenbach am Main, Germany. Responsibilities include ensuring optimal fluid condition, communicating with internal and external stakeholders, and maintaining accurate data. Requires technical training or equivalent experience, fluency in German and English, and strong customer focus.

Manage and grow complex website and retainer projects for B2B SaaS companies. Coordinate projects, lead client communication, and translate client feedback into actionable steps for design and development. Support clients with website strategy, CRO, messaging, landing pages, and long-term website growth.

Technical Management Engineer provides Level 2 service support, assists L1 teams with escalations, and supports L1 training. Responsibilities include technical support, training, and managing regional issues. Requires a technical background and 3+ years in technical support.

AI Research Engineer will design, develop, and deploy AI-driven security services. Responsibilities include prototyping, testing, and benchmarking AI models, as well as staying abreast of AI/ML advancements. Requires experience in Go, Python, cloud-native architectures, and AI/ML techniques.

Senior SAP Finance Architect needed with 12+ years of experience in SAP FI/CO within S/4HANA. Responsibilities include designing architectures, leading greenfield/brownfield transformations, and managing simplification items. Must be German speaking.

Chief Growth Officer to lead international expansion and commercial scale-up for a climate-tech B2B SaaS company. Own market opening, GTM playbook replication, and sales structure development. Requires 7+ years in B2B SaaS with scaling experience.

Talent & Performance Lead HCM requires expertise in Talent Management and Workday Talent modules. Candidates need 5+ years in large-scale HCM implementations, focusing on data quality and risk mitigation.

Manager role managing client projects involving game-theoretical negotiation projects, such as monopoly negotiations or competitive tendering. This position requires conducting complex negotiations while overseeing costs and results.