java English-speaking jobs in Mainz

Experienced software development team lead develops technical concepts and supports agile teams. Analyzes requirements, leads and coaches development teams, conducts code and architecture reviews, and collaborates with stakeholders. Requires a degree in Computer Science or related field, leadership experience in software development, and strong interpersonal and technical skills.

Senior leadership role defining global marketing effectiveness frameworks. This position drives holistic business growth understanding, focusing on data-based decision-making and investment ROI across global teams.

For our secondary school in Heilbronn we are looking for a Teacher of Physics (German & English) (Part-time or full-time)

Electronics Engineer/Technician to integrate components into vacuum control systems. Requires a degree in Electronics/Mechatronics or relevant experience, proficiency in schematics, and strong problem-solving skills.

Seeking a Strategic Consulting Director/Senior Manager with a PhD in Materials Science, Chemical Engineering, or Biotechnology. Must have 3-5 years of strategic consulting experience at top firms, focusing on advanced materials or synthetic biology.

Deliver groceries to customers efficiently by e-bike or e-scooter. Maintain a high level of customer service and consistently meet or exceed delivery targets. Earn at least €13.90 per hour plus tips.

Lead and develop the R&D organization for the Agriculture Business Line, driving innovation and product development excellence across global sites. This role requires a strategic leader with engineering background to align technical capabilities with business objectives.

Hands-on Office & Studio Administrator needed to keep a livestreaming studio running smoothly. Tasks include office management, stocking supplies, and setting up/resetting sets. Requires organization, proactivity, and flexibility with hours.

Develop and operate a B2B SaaS/MSSP platform for automated and manual penetration tests. Requires experience in full-stack development using Go and Vue.JS/AngularJS, and software architecture.

Freelance German SEO Specialist needed to optimize Google Business Profiles for a global CRM brand. Requires native German speaker based in Germany with 3+ years of SEO experience and knowledge of CRM/B2B SaaS tools.

As COO, lead operational service delivery for a compliance provider. Responsibilities include managing client relationships, overseeing regulatory monitoring, and implementing new compliance solutions based on German and EU financial regulations.

This remote project involves recording and annotating Turkish audio interactions to support voice-controlled AI technologies. Candidates must be native in the language and use an Apple Silicon Mac running macOS Sequoia or later.

DevOps Engineer responsible for infrastructure operation, development, and optimization using automation and Infrastructure-as-Code. Duties include managing CI/CD pipelines and supporting developers. Requires experience with DevOps concepts and Linux.

The role involves maintaining and developing the SAP S/4HANA system landscape. Core duties include ensuring stable SAP operations, managing installations, upgrades, and supporting integrations. Requires relevant SAP Basis experience.

Master's thesis focusing on modeling and intelligent control of a dual-input RF Power Amplifier System. Tasks involve behavioral modeling, ML for parameter dependence, and developing ML control for temperature variations. Requires background in CS, EE, or Physics with applied math.

Senior Director of Product, Consumer, owns the product vision and roadmap for self-filing in Germany. This role shapes the two-brand strategy, builds AI-native products, and drives growth beyond filing into wealth creation.

Lead and develop a cross-functional team owning the end-to-end architecture of complex optical and optomechanical systems. Drive design quality and shape the technology roadmap in optic and mechanical design.

Specialist Process Development focuses on new technology process development for plastic battery housings in automotive applications. Responsibilities include managing process activities, conducting DoE, standardizing knowledge, and supporting digitalization initiatives. A degree in Plastic Engineering is required.

IT Business Application Specialist to evolve the application landscape. Responsibilities include maintaining Excel/Access solutions, managing Infor LN ERP, and developing reports. Requires IT background and proficiency in German, English, and French.

Senior Software Engineer for Internal AI. Design, build, and maintain internal products like complex agents and automations. Requires 5+ years shipping production software and strong Python skills with AI product experience.