java English-speaking jobs in Mainz

Experienced Patent Legal Assistant / Patentanwaltsfachangestellte required to support Patent Attorneys in Munich or London. Responsibilities include managing case files, providing paralegal support, and ensuring legal deadlines are met. Fluent German and English required.

Lead the finance function for a security and compliance tech company, encompassing accounting, controlling, FP&A, and finance operations. Develop and grow a finance team, act as a strategic partner to the executive team, and ensure accurate financial reporting and compliance.

PhD researcher to work on a project using infrared frequency comb spectroscopy enhanced by machine learning to analyze broadband spectra and relate them to plasma parameters. The project is a collaboration between Ruhr University Bochum, Kiel University, and Oxford Instruments Plasma Technology.

Lead Full-Stack Engineer needed for a hyper-scaling tech company. Design and evolve distributed fullstack architectures using React/Next.js + Node.js. Build highly performant user interfaces and backend services. Shape API models, data flows, and integration logic. Mentor other engineers and lead discussions. Deep expertise in React, Next.js, Node.js, TypeScript, and REST/GraphQL API design required.

The Regional Marketing Communications Manager activates Megger's marketing strategy, ensuring marketing activities contribute to commercial funnel generation, brand visibility, and regional marketing KPIs. Responsibilities include event management, channel partner marketing, regional campaign activation, and reporting on marketing activity performance.

Develops Cafeyn Premium distribution partnerships across Europe, with a focus on the DACH region and verticals such as Telecom, Banking, Insurance, Pay TV, and Retail. Leads the full sales cycle, from prospecting and pitching to negotiating and closing deals. Manages executive relationships with partner organizations. Contributes to vertical expertise and collaborates cross-functionally.

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.

Product Manager to build and improve dealer-facing products in areas like inventory management, listings, lead handling, and billing workflows.

As a Sr. Advertising Technology and Media Sales Manager, you will leverage your experience selling digital advertising solutions to CPG brands and agencies to grow category revenues. You will act as a strategic partner, building and executing full funnel strategies, identifying new business opportunities, and retaining existing advertiser revenue.

Construction Manager needed for 8-12 month contract in Munich. 5+ years experience managing construction sites, ideally with interior fit-out expertise for office buildings. Must be fluent in English and German.

Senior R&D Project Manager to oversee diverse technology development, process optimization, and innovation projects. Manage cross-functional teams, build global collaboration frameworks, and accelerate technology industrialization. Requires 6+ years of R&D project management experience, proficiency in project management tools, and bilingual (Chinese/English) proficiency.

Nagarro seeks a driven SAP Cloud (Senior) Sales Specialist to acquire new business and build customer value. Responsibilities include identifying and engaging new customers, managing a qualified pipeline, and leading the full sales cycle. Requires 3+ years of proven success selling SAP Cloud solutions with a consistent track record of winning new customers.

Expert Controlling will define and implement standardized production controlling processes, ensure accurate product cost calculations, and translate production data into insights for management.

Site Project Manager for large industrial/electrical/data center projects. Manages site operations from preparation through construction and testing. Ensures safety, quality, and adherence to procedures. Requires electrical background, construction site experience, and strong communication skills. Fluent in English and German. Willingness to work on rotation.

Leads the planning, implementation, and continuous improvement of environmental, health, and safety processes. Provides expert guidance to site leadership and employees, ensuring compliance with legal and corporate standards. Conducts risk assessments, investigates incidents, manages audits, and develops site-specific SHEA strategies.

PhD student will establish and cultivate vascularized tumor spheroids in bioreactors, conduct MRI measurements, and analyze data.

The Voyage Global Leadership Development Program is a full-time, paid program for recent university graduates. Participants will gain hands-on experience in hotel operations, including Food & Beverage, through rotations and special projects. The program spans 12-18 months and includes leadership training, mentorship, and opportunities to collaborate with other Voyage participants worldwide.

Experienced Project Manager needed to lead post-acquisition integrations for a growing company. Responsibilities include managing communications, updating policies, documenting processes, and coordinating system integrations. Fluent German and English required, with willingness to travel within Germany and Switzerland.

Finance Controller (m/f/d) supports the Central Europe region's Financial Performance Management process, including FP&A and Controlling activities. The role involves monthly and annual closings, rolling forecasts, cost controlling, and business partnering.

Provide technical leadership for MES workflows, integrations, and shop-floor systems. Collaborate with architects, business teams, and vendors to ensure system reliability. Guide the team on development, AMS support, and troubleshooting.