java English-speaking jobs in Mainz

Bild-Expressen GmbH seeks skilled photographers to cover sports assignments in the Koblenz/Bonn/Köln/Frankfurt and Hannover/Hamburg regions. Duties include photographing player and team portraits outdoors and in studios. Applicants must have strong photography skills, be responsible and organized, and possess excellent social skills. Must have a German driver's license and access to a car.

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.

Manage the full recruitment process, onboarding, and offboarding. Maintain personnel files, advise on HR policies, and coordinate employee development programs.

Energy Storage Sales Manager / Country Manager needed for front-of-meter BESS projects. Experience with EPCs, system integrators, and developers required. Must understand local grid codes and interconnection processes. Fluent English, local language proficiency a plus.

Leads oversight of projects from proposal to completion, collaborating with clients, technical teams, and business development. Provides technical and portfolio leadership for CMC activities, ensuring successful project execution and delivery.

Field Service Engineer needed for start-up and commissioning of solar inverters at photovoltaic solar plants. Responsibilities include diagnosing and repairing faulty inverters, completing field reports, and maintaining company property. Requires 3+ years of experience in similar environments and training in electricity and electronics. Travel to solar plants is required (approximately 80% of the time).

Senior Research Engineer to develop advanced models of high-speed PHY systems, analyze impairments, and propose architectural improvements. Requires experience with signal processing, system modeling, and simulation tools.

Finance & Tax Manager combines financial and tax management responsibilities for a German group company. The role oversees financial management, coordinates IPO preparation, and ensures tax compliance and optimization. Requires 8+ years of experience in financial and tax management, strong knowledge of German GAAP and IFRS, and fluency in Chinese, English, and German.

Account Manager (m/f/d) for the DACH region. Responsible for managing customer relationships, driving customer budgeting and account plans, and identifying new business opportunities. Requires several years of experience in the lubricant industry, strong knowledge of price management and Salesforce, and excellent communication skills.

Lead civil construction activities on large-scale industrial, energy, and infrastructure projects. Manage budgets, schedules, and quality control for civil deliverables. Ensure health, safety, and regulatory compliance.

Intellect Design Arena Ltd seeks a Pre-Sales/Solution Consultant to drive business growth. The role involves collaborating with the sales team to understand client requirements, develop solutions, and deliver presentations. Candidates should have experience in core banking transformation deals and strong communication skills.

VoIP Engineer to support and maintain VoIP and telephony systems, providing customer support and participating in system upgrades.

The Turnover Piping Engineer ensures piping systems are installed, inspected, and tested according to project specifications and codes. The role verifies, documents, and manages the turnover of piping systems from construction to commissioning. The Engineer coordinates with subcontractors, construction, and client teams to achieve compliance and readiness.

Develops and executes creative strategies for EMEA markets, with a focus on the UK, Germany, and UAE. Manages creative production, localization, and copywriting for campaigns. Conducts market research and analyzes campaign performance. Collaborates with internal and external teams to ensure brand consistency and achieve business objectives.

Product Designer needed for a Germany-based AI company developing intelligent document processing solutions for enterprise customers. Shape how users interact with AI-powered workflows, focusing on the human-AI handoff.

Experienced Power Platform Architect needed to design and implement solutions integrating Power Apps, Power Automate, Dataverse, and Dynamics 365 (CE/F&O). Expertise in Copilot, AI Builder, and Azure OpenAI integration is required. Strong understanding of Azure components, security, and ALM practices is essential.

Senior Product Manager to lead product strategy and growth for a new product line. Will conduct market research, define product requirements, and collaborate with cross-functional teams. Requires 3-5 years of experience in product management or marketing within the medical sector.

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.

Drive projects, design workflows using automation tools, and handle high-impact tasks to support the leadership team.

IT Support Engineer provides 1st and 2nd level support for users, troubleshoots hardware, software, and network issues, and manages Active Directory, Azure AD, and Microsoft 365 environments.