java English-speaking jobs in Mainz

Experienced (Sr) Product Marketing Manager to drive business growth and product strategy for Nexperia's expanding Silicon Carbide (SiC) portfolio.

Leads Occupational Health, Safety, and Environmental standards, ensuring regulatory compliance in a complex production environment. Drives Health, Safety, and Environmental performance, monitors KPIs, and leads audits and risk assessments. Requires a degree in a relevant field, 5+ years' experience, and fluency in German.

Peroptyx seeks Data Analysts to review mapping data for digital applications. Responsibilities include verifying business information, distances, and ensuring route accuracy. Must be fluent in English and German, possess excellent research skills, and have strong local knowledge of Germany. Must pass an online exam and be willing to work a minimum of 10 hours per week.

The Deployment, Associate configures, tests, and prepares POS and credit card equipment for deployment. This role involves managing inventory, fulfilling orders, and ensuring quality and safety standards.

Kautex, a global automotive supplier, seeks a Working Student IT - Infrastructure to support its IT infrastructure across 30+ plants in 13 countries.

Bodycote seeks a Recruiter - Western Europe to drive talent acquisition across France and Germany. The role involves end-to-end recruitment, sourcing, and building relationships with hiring managers. Fluency in English, French, and German is required.

Lead international expansion and commercial scale-up for a VC-backed climate-tech B2B SaaS company. Own the opening and ramp of new markets, targeting 150% revenue growth. Lead and develop go-to-market strategies, establish sales structures, and drive value-based selling. Own country-level P&L and recruit market leads.

Director of Product (Platform) will own the foundational layer powering Ocrolus's document intelligence infrastructure, API/developer platform, and model orchestration. This role defines platform strategy, roadmap, and abstractions for both business units, balancing near-term delivery with long-term scalability.

Research Assistant positions available at the Institute for Software and Systems Engineering (ISSE) at Clausthal University of Technology. Focus on AI-based platforms and matching systems for the circular economy. Responsibilities include requirements definition, research project conception, and development of AI-supported solutions. Applicants must have a Master's or Diploma in computer science, software systems engineering, digital technologies, or a related field. Strong knowledge of programming languages, object orientation, machine learning, and both written and spoken English and German are required.

Supports a global IT transformation program focused on e-Invoicing implementation. Develops and executes communication strategies, creates project documentation, and facilitates workshops. Conducts stakeholder analysis, change impact assessments, and training needs analysis. Collaborates with project managers, business teams, and technical experts. Requires a degree in a related field and experience in change management, project management, or communication.

Administration Assistant to support Consulting, Accounting, and Tax teams. Responsibilities include managing client engagements, processing invoices, and ensuring smooth administrative processes. Requires organizational skills, attention to detail, and proficiency in Microsoft Office.

Leads commercial expansion in Germany and the DACH region for an AI-powered engineering and manufacturing solutions company. Builds strategic relationships with industrial manufacturers and drives adoption of AI solutions. Combines enterprise sales, consultative solution selling, and customer engagement. Reports to the Co-founder & CEO.

Leads and supports construction across ILOS' international markets, ensuring consistent delivery standards and a quality-led approach. Oversees construction leads and teams in Ireland, Italy, UK, and Germany. Drives modern construction processes, governance, and performance tracking. Requires significant senior-level construction experience in renewable energy or related sectors.

Lead the Supply engineering team, shaping the roadmap and ensuring predictable, high-quality delivery. Guide system design, review code, and contribute to continuous improvement. Hire and onboard engineers, collaborate with stakeholders, and advocate for AI-driven engineering practices. Several years of experience leading software engineers in a product-led B2C or marketplace environment is required.

Medical Director II (Dermatology) will provide medical and safety monitoring, develop clinical development strategies, and offer scientific guidance to project teams.

doTERRA seeks a Head of EU Government Affairs to lead advocacy and engagement with EU institutions and trade associations. This role requires 10+ years of experience in EU public affairs, government relations, or regulatory advocacy, with a focus on highly regulated sectors.

Lead the product and solutions portfolio across Cleanroom & Dryroom, Media Supply, and Exhaust & Abatement business lines. Drive the evolution from project-specific solutions to standardized, scalable offerings. Own product lifecycle management, including roadmap development, new product introduction, and portfolio governance. Partner with Sales, Global Account Management, Operations, Procurement, Innovation, Digital/Data, and business-line leadership. Build and develop a global product management team.

Set up and operate offset printing presses to produce high-quality prints. Adjust ink, paper, and alignment for optimal output. Conduct quality checks and troubleshoot minor machine issues. Follow job instructions and maintain production logs.

Field Services Engineer to install, commission, and provide support for AM systems. Requires a technical diploma or degree and experience servicing, maintaining, or repairing AM, CNC, robotic, or automation machines. Travel to Spain, Portugal, and the UK is required.

Visable, the European B2B market leader, seeks a Sales Manager to drive customer acquisition for B2B platforms "wer liefert was (wlw)" and "europages." Polish language skills are required.