java English-speaking jobs in Mainz

Mechanical Engineer will design, develop, and modify mechanical engineering layouts, schematics, and specifications. Responsibilities include overseeing manufacturing and installation processes, coordinating procurement and assembly of mechanical components, and leading mechanical design projects.

Support the Application Owner for the MACE Audit application. Drive development, optimization, and maintenance, managing roadmaps, changes, and testing. Coordinate stakeholders and ensure UI/UX and IT security compliance.

Support Finance and HR operations at DLT Finance AG. Tasks include bookkeeping, invoice processing, financial reporting, candidate communication, and onboarding support. Requires university enrollment in a related field and strong analytical skills.

Lead an established Data Analytics team, developing analysts while remaining hands-on with SQL, Python, and AI tools. Shape analytics in an AI-native environment, building scalable data products and delivering actionable insights to senior stakeholders.

Experienced Training Manager to design and deliver operational training programs, build onboarding frameworks, and support workforce development initiatives in logistics operations.

Responsible for mechanical site supervision during wind turbine installation and completion. Ensures safe, high-quality, and on-schedule execution. Provides technical coordination and supervision of external contractors. Reviews turbine-related reports and documentation. Participates in project and site meetings.

Define and own ECAD library architecture, establishing global standards and governance. Architect integrations between ECAD tools and systems. Requires engineering education and strong ECAD experience, including Siemens Xpedition.

Analyst, Credit Ratings - Structured Finance role involves assisting with credit ratings for European structured finance transactions, RMBS, ABS, and SME-CLOs. Responsibilities include portfolio credit analysis and producing detailed committee memos.

Senior Expert in R&D Developability and Formulation develops robust drug product formulations for protein therapeutics from early to clinical stages. This role leads formulation strategy for injectable biologics, supporting CMC and regulatory activities.

Manage and grow key enterprise accounts in the DACH region. This role involves owning a portfolio, engaging with C-suite executives, and driving account growth through strategic planning. Requires 3+ years of relevant experience and native German with fluent English.

Hybrid role combining Customer Service and Logistics Coordination. Serve as a customer contact, manage orders in ERP, and coordinate shipments with carriers. Requires German and English fluency, and experience in customer service or logistics.

Experienced IT Program Manager needed to lead complex programs from Germany. Requires 12-15 years of global delivery experience, managing offshore teams, and familiarity with AI Native frameworks. Minimum C1 German proficiency is required.

Lead and scale the engineering organization for a next-generation supply chain platform. Drive platform architecture evolution, align technology strategy with business goals, and champion scalable, AI-first systems.

Ambitious Account Manager needed to grow business in Northern and Eastern Germany. Requires 3+ years of B2B sales experience, strong relationship-building skills, and fluency in German and English.

Lead and develop a central team to manage global serious incidents, complaints, and claims for PS business. Coordinate quality assurance, risk assessment, and legal defense related to service disruptions. Requires technical/legal degree and strong knowledge of relevant laws.

PhD positions are available at the International Max Planck Research School for Functional Material Design. Candidates with an MSc in a natural science are sought to research sustainable materials in an interdisciplinary environment.

Head of PMO to lead transformation for a Private Equity-backed industrial business post-merger. This hands-on role drives execution, integration, and value creation across the group, reporting to the CEO.

MIG welder needed for assembly and car body welding (including out-of-position welding). Requires DB standards certification, experience with technical drawings, and proficiency in MIG welding (aluminum).

Manage the full commercial contract lifecycle, including negotiation and compliance, for a specialty pharmaceutical company. Requires 3+ years in contract management and familiarity with CRM/ERP systems.

Construction Manager for onshore wind projects. Take full responsibility for construction budget and schedule, leading all phases from planning to handover. Requires civil/industrial engineering degree and relevant construction management experience.