java English-speaking jobs in Mainz

PhD position in immunological research investigating the interplay of infections and autoimmunity in liver and bowel diseases. Applicants should have a scientific university degree and experience with cell culture, flow cytometry, and bioinformatics.

The Leibniz Institute for Natural Product Research and Infection Biology seeks a Scientific Communication, Public Relations, and Events Officer to prepare and communicate research results and activities, particularly for the INCATE project. Responsibilities include writing accessible texts, supporting public relations activities, organizing events, and developing communication materials. The ideal candidate has a degree in media, communication, journalism, or public relations, or a natural science degree with proven science communication skills. Fluency in German and English is required.

Solution Representative needed for ground PV and energy storage projects in Europe and ANZ. Designs customized technical solutions, develops proposals, and ensures compliance with local standards. Requires 3+ years of experience in technical solution design for renewable energy projects and proficiency in relevant technical standards and tools.

SAP FI/CO Process Consultant/Project Manager needed for S/4HANA transformation program. Lead end-to-end project management activities, drive process analysis and optimization, and coordinate stakeholders. 3+ years of SAP process consulting/project management experience and S/4HANA transformation project experience required. Fluent German.

The Operations Manager oversees all aspects of operational and customer service activities within the Cosentino Center, including material handling, inventory management, logistics & delivery, warehouse operations, and team leadership.

IoT Connectivity Manager will manage existing automotive connectivity for Hyundai Group vehicles in Europe. Responsibilities include managing Mobile Network Operators, troubleshooting connectivity issues, and coordinating new features with internal and external teams.

Staff Backend Engineer will lead the architectural roadmap for Trust & Safety, transitioning from siloed tools to a unified "Trust-as-a-Service" platform. Responsibilities include defining technical standards, leading a "neuron-based" risk engine, and overseeing third-party integrations. Requires 10+ years of backend engineering experience, mastery of Python and distributed systems, and expertise in AWS.

Manages subcontractor strategy, bid support, selection, and contract negotiation for wind construction projects. Requires 5+ years of procurement experience in renewable energy or EPC sectors.

E-Commerce & Marketing Specialist (m/f/d) for a growing company. Contribute to various e-commerce areas based on your profile and interests. Flexible work arrangements available.

Develop and implement a global internal communication strategy, manage internal communication campaigns, and create content for various channels. Support the introduction and continuous improvement of internal communication channels. Partner with HR, IT, and other departments to ensure consistent communication. Monitor reach, engagement, and feedback on internal communication activities.

Lead global revenue strategy for a mid-sized SaaS client, unifying sales, marketing, customer success, and professional services. Define and execute a global revenue strategy aligned with SaaS acceleration, product evolution, and market expansion goals.

DevOps Engineer to maintain, automate, and enhance production environments supporting trading systems. Requires experience in energy, commodities, power trading, or financial trading.

Senior Manager for Corporate Strategy, focusing on the Consumer Markets business segment. Leads strategic initiatives, advises top management, and ensures business unit perspective is reflected in corporate strategy. Requires a degree in a relevant field, 5+ years of experience in strategy roles, and experience in B2B high-tech manufacturing, B2B2C industries, or diversified manufacturing.

Shape and evolve VBA's communication strategy, execute day-to-day communications, and develop messaging for diverse stakeholders. Analyze target audiences, improve engagement, and contribute to VBA's position in the impact and sustainability ecosystem.

PhD student to investigate and develop advanced materials for CO2 capture processes. Responsibilities include experimental measurements, data analysis, and material characterization using techniques like X-ray analysis and vibrational spectroscopy. Collaboration with international partners and manuscript preparation are also required.

Experienced SAP PP-PI/MES Integration Expert needed to support and optimize a complex manufacturing landscape. Focus on SAP PP-PI with strong integration experience, particularly with PAS-X and Werum ATLAS.

DevOps Specialist (CI/CD & DevSecOps) with 12-15 years of experience building and securing enterprise-grade delivery pipelines on cloud platforms (AWS/Azure/GCP). Expertise in ART CI/CD, Jenkins/Concourse, Git/Bitbucket, Maven/Gradle, Artifactory/JFrog, SonarQube, Terraform/Ansible, Prometheus, Grafana, ELK Stack, and Python/Bash/PowerShell. Strong DevSecOps experience including FOSS scanning, vulnerability detection, and secure SDLC automation. Proficiency with Agile/SAFe and JIRA/Confluence.

Experienced SAP S/4HANA Specialist needed to analyze, optimize, and support production planning processes. Expertise in PP, QM, and BI modules required. Must translate business requirements into technical solutions and provide user training.

Provide L1/L2 desktop support (remote & onsite), troubleshoot hardware/software issues, manage tickets, and install/configure Windows OS & MS Office.

Manage a portfolio of major airline and oil company accounts, developing and executing account plans focused on growth, retention, and customer satisfaction. Lead contract renewals and price negotiations, prepare commercial proposals, and identify upsell and cross-sell opportunities.