java English-speaking jobs in Mainz

Sales Development Representative for Checkmk, a leading hybrid IT monitoring software. Support customer growth in Europe, the US, and beyond.

Content Moderator needed to assess and respond to user-reported content, ensuring it aligns with community standards. Must be fluent in Hebrew and English.

The Economics of a Green and Just Transition team seeks a trainee to support policy and research work on financing and implementing a green and just transition. The trainee will draft content, contribute to EU-level policy analysis, and may support an industry-focused project.

Postdoctoral researcher to develop a physics-based framework for assessing the long-term habitability of rocky exoplanets. Will advance atmospheric codes and conduct detectability analyses. Requires a completed PhD in a relevant field.

Lead the planning, coordination, and technical management of complex digital projects focused on e-commerce, digital platforms, integrations, and interface management. Translate client requirements into technical concepts, working with architects and developers to ensure scalable, performant, and secure solutions. Manage Scrum teams, define backlogs and priorities, and maintain transparent communication with clients and stakeholders.

Treasury Manager (m/f/d) Liquidity, FX and Working Capital Optimization will manage collateral usage, oversee liquidity and funding costs, and prepare short- and medium-term working capital and cash flow forecasts. The role involves optimizing working capital structures, driving process automation, and collaborating with stakeholders to improve cash flow efficiency.

Remote Virtual Executive Assistant supports entrepreneurs in the US & Europe by managing email, calendar, tasks, travel, and accounting. Requires a Bachelor's degree, strong problem-solving skills, and excellent written and verbal communication in English (C2).

Own end-to-end Talent Acquisition for a rapidly growing green tech startup specializing in algorithmic energy trading. Scale existing processes, develop sourcing and channel strategies, and partner with hiring managers to build a high-performing team. Proven recruiting track record in tech-driven environments and experience with structured interviews and assessment tools are required.

This Minijob Shift Engineer role involves fault repair, equipment maintenance, plumbing, furniture and lighting installation, and periodic maintenance. Successful candidates will have previous experience as an Engineer or in a similar role.

Senior R&D Expert to design and optimize excavators for European market segments including demolition, material handling, waste & recycling, and civil engineering. Lead development and integration of application-specific solutions, ensuring compliance with European regulations. Translate market needs into engineering requirements for global R&D teams.

FutureLog seeks a Product Marketing Manager to shape product positioning, messaging, and go-to-market strategies for its Procure-to-Pay platform. This role involves market analysis, product storytelling, and collaboration with cross-functional teams. Experience in SaaS, product launches, and pricing strategies is required.

Experienced Boeing Captains with significant Training/Check Captain flight experience and strong soft skills are sought for a global engagement role. The position involves flying, training, consulting, mentoring, and customer support. Must have a valid FAA, EASA, or equivalent ICAO license, First Class Medical, and 3,000 hours PIC time on a Boeing type.

Lead and develop a field sales team in Northern Germany, driving regional business growth for industrial automation solutions. Provide technical sales support, build customer relationships, and execute sales strategies.

As a Senior Legal Counsel (AI Law), you will provide strategic legal guidance on a range of AI-related matters, including regulatory compliance, data strategy, intellectual property, and risk management. You will advise on evolving AI regulations, ethical guidelines, and industry standards, with a primary focus on the EU.

HR Specialist (f/m/d) Operations & Projects will manage operational HR processes, prepare documentation and reports, and support managers and employees on HR-related topics. The role requires experience in HR generalist functions, knowledge of German labor law, and proficiency in Microsoft Office Suite.

Manages legal aspects of construction projects, drafting, reviewing, and negotiating contracts with clients and subcontractors. Provides legal support to project managers and claim managers. Ensures compliance with legal and internal requirements.

Wizz Air seeks A320 Captains (Type Rated & Non-Type Rated) with a valid EASA ATPL (A), Class 1 Medical, minimum 3,500 total flight hours, and 1,000 hours on multi-crew jet aircraft.

As Enterprise Architect – Strategic Domains, you will shape the future Enterprise Architecture practice within the Heraeus Group, focusing on strategically important business and IT domains. You will develop reference architectures, support portfolio decisions, and coach stakeholders on architecture planning.

Experienced Spa Nurse needed for esteemed cruise line client. Deliver wellness and beauty services, ensuring guest safety and satisfaction. Previous cruise ship experience as a Spa Nurse required.

Supports daily operations and business development for the European team. Manages office administration, coordinates business operations, provides sales support, and assists with finance processes.