java English-speaking jobs in Mainz

Senior Service Designer focuses on journey management for JobRad® 2.0. You will create journey maps and service blueprints, lead the Customer Journey Guild, and define end-to-end journey metrics. Requires 5+ years in service/UX design.

Legal Counsel providing advice on software, data, cybersecurity, and contract law for European subsidiaries. Responsibilities include drafting and negotiating global contracts and supporting regulatory compliance. Requires a Volljurist or comparable qualification and fluency in English and German.

Senior Data & AI Consultant to help clients turn data and AI ambitions into business value. Shape and deliver engagements across strategy, transformation, bespoke AI solutions, and platform development. Requires 5+ years in Data & AI and 2+ years in consulting.

Chief of Staff to structurally build company and org processes. Own strategic projects end-to-end, creating scalable ways of working. Requires 5-8 years in strategy & operations, fluent German/English, and interest in amateur football.

Lead the vision and design of complex engineering and digital solutions. Architect end-to-end technical blueprints, select tech stacks, and guide teams across embedded systems, IoT, and cloud platforms.

Accountant role managing day-to-day finance operations for an international creative agency. Responsibilities include invoice processing, financial record maintenance, and supporting monthly closing. Requires 4+ years of experience with German accounting and DATEV.

Manager EXO Supply Industrial Chemistry serves as the technical partner for Third-Party Manufacturers. This role drives technical excellence, leads cost optimization, and executes manufacturing projects across global supply chains.

As a Sr. Customer Success Manager, you advocate for customers, driving adoption and usage of ServiceNow products. You ensure technical health, resolve escalations, and leverage AI experience. Fluent in English and German is required.

Senior Full Stack Tech Lead develops performant, reusable TypeScript code for web apps. Own technical direction, driving architecture and implementation using tools like NextJS, PayloadCMS, and Tailwind CSS.

Junior Specialist Treasury EMEA handles daily bank contact, inquiries, and stakeholder feedback. Responsibilities include ensuring transaction compliance and supporting financial reporting. A degree in Finance or related fields is required.

Support the marketing of the European Flight Academy. Tasks include planning events, website optimization, and social media content creation. Requires fluency in German and English.

Seeking AI/ML and Software Engineers for advanced AI systems. Roles include full-time AI/ML Engineer or flexible contract Software Engineer. Requires strong skills in Python, C++, Java, Golang, TypeScript, or Rust.

Complete an 18-month trainee program in Digital Experience Software Development. Requires a degree in Informatics, Math, or related field, plus initial experience. Strong coding skills and fluency in English are key.

Support trial sites as a Freelance Site Coordinator, managing ICH-GCP compliance and protocol requirements. Key duties include communication, monitoring visit assistance, enrollment tracking, and data management. Requires 2+ years in a clinical trial environment.

Wood Defect Product Owner to own the data to model to customer feedback loop for AI wood defect detection. Requires forestry or wood science background and digital competence to improve defect models.

Oversee maintenance of the Sky Line people mover system infrastructure at Frankfurt Airport. Responsibilities include managing planned/unplanned maintenance, spare parts, and leading a team of 15. Requires technical background and leadership experience.

Build the operating system for a fast-growing AI music video platform. Structure financial planning, hiring, and cross-functional execution while protecting speed. Requires experience scaling product companies and understanding German compliance.

Logistics Planner Junior Specialist supports Finished Vehicle Logistics by creating transport plans for trucks and rail, securing capacity, and managing loading schedules. Requires relevant academic background, MS Office proficiency, and English fluency.

Specialist Product Engineering role involving creating and maintaining technical documents like BOM and assembly instructions. This position acts as a central interface between development, production, and sales. Requires technical training or engineering degree and proficiency in German and English.

Lead global BPM and Data Governance evolution, building on established foundations. Define operating models, drive process excellence, and mature data governance to enable AI-supported business transformation.