java English-speaking jobs in Mainz

The Mechatronic Engineer will coordinate the operation of the SUNDAE2 measurement system, integrating, commissioning, and optimizing its mechanical, electrical, and motion-control systems. Responsibilities include operating and maintaining the Hall probe measurement system, specifying and integrating new instrumentation, and developing measurement procedures.

Define and lead Symrise's global cyber and information security strategy. Responsible for safeguarding the global digital ecosystem, production environments, and data while enabling business growth.

Senior Electrical Hardware Engineer to lead complex electronics development, including PCB redesign, from concept to production release. Requires deep experience in mixed-signal hardware and project ownership.

Install, maintain, and upgrade semiconductor equipment at advanced manufacturing facilities. Perform preventative and corrective maintenance on electrical, vacuum, mechanical, plasma, hydraulic, and gas systems. Requires up to 75% travel.

Strategic Finance Leader for Germany, orchestrating end-to-end financial planning and decision support. This role drives value creation by guiding investment decisions, margin architecture, and performance routines across the value chain.

Process Specialist supports production by analyzing and resolving manufacturing and quality issues. Responsibilities include optimizing assembly processes, reducing scrap, and documenting solutions using Lean and Six Sigma methods. Requires experience in complex medical disposable product manufacturing.

Social Media Manager & Copywriter needed to manage and publish content across all social media platforms. Write engaging copy, plan and distribute newsletters, and coordinate blog articles. Must have native-like German, 1+ year of experience in social media management, content marketing, or copywriting, and excellent written German.

As a Bioinformatician / Data Scientist, you will support the generation, structuring, processing, and analysis-readiness of high-dimensional patient data across genomics, transcriptomics, proteomics, epigenetics, liquid-biopsy, and functional ex-vivo datasets. You will ensure data is properly ingested, organized, quality-controlled, documented, and made available for downstream analyses, clinical interpretation, and digital-twin development.

Legal Counsel to support the growth of a leading international renewable energy developer's German business. Provide legal support across utility-scale wind, solar PV, BESS and hybrid energy projects.

Supply Chain Manager for a pharmaceutical organization. Responsibilities include coordinating end-to-end supply chain, managing product launches, and maintaining supplier relationships. Requires relevant experience and fluency in German and English.

Senior Director of Engineering to lead design and establishment of a new life sciences manufacturing site. Requires 15+ years in complex manufacturing, advanced degrees, and experience with large-scale capital projects.

Warehouse Logistician/CDL Driver needed for an OCONUS contract. Duties include transporting items, using MHE, driving box trucks/trailers, and preparing cargo. Requires TS/SCI clearance, forklift certification, and ability to obtain German driver's licenses.

The Data Center Engineering Operations Technician is responsible for the delivery of best practice systems and problem resolution on all data center electrical and mechanical infrastructure. The role requires a highly driven individual who demonstrates initiative and proactively seeks solutions to complex technical problems. Responsibilities include setting and maintaining safety standards, driving continuous improvement efforts, and collaborating with stakeholders to deliver operational excellence.

As a Specialist, Talent Acquisition, you will help shape the talent profile by identifying and attracting top talent for entry and mid-level roles. You will partner with site HR to execute recruiting plans and manage the full life cycle recruiting process.

Own post-sales relationships with installation partners to ensure projects move through onboarding, installation, and invoicing without stalling. Drive delivery performance and improve processes in an AI-enabled energy-tech business.

Experienced SAP Commerce Cloud Project Manager needed for a 1-year freelance role. Responsibilities include driving B2B implementation, managing integrations, leading UAT, and overseeing cutover and stabilization. Must have led E2E SAP Commerce Cloud implementations.

Experienced hospital nurse needed for a Near Patient Nurse role supporting the TRICARE Overseas Program. Requires 3+ years of inpatient clinical experience, fluency in German and English, and a valid driver's license.

Procurement Lead for a leading M&E design and build contractor. Responsibilities include strategic sourcing, supplier management, and project procurement for complex mechanical and electrical projects. Requires 7+ years' experience in M&E or construction.

Support technology service delivery across client engagements through coordination, governance, and stakeholder management. Requires 2-5 years of experience, a relevant Bachelor's degree, and fluency in German and English.

Project Assistant role supporting a global power technology leader. Responsibilities include managing operational workflows, maintaining project data, and coordinating stakeholders. Requires a Bachelor's degree and advanced Microsoft Office skills.