java English-speaking jobs in Mainz

Principal Strategy & Consulting bridges business strategy, customer challenges, AI, and technology. This role develops scalable growth plays, shapes executive narratives, and builds consulting frameworks to drive client transformation.

Experienced phlebologist or vascular surgeon sought to implement diagnostic and therapeutic procedures for venous diseases. Will advise and treat patients with conditions such as varicose veins and chronic venous insufficiency. Collaborate with a team of doctors, nurses, and therapists.

Senior Product Manager for Energy at 1KOMMA5° to build and scale the Heartbeat AI platform. Define product vision, standardize energy propositions, and analyze international energy markets. Requires 4+ years in energy retail/trading.

Principal Managing Partner cultivates deep client relationships, orchestrating cross-functional efforts across all lines of business. This role drives multi-year account strategies, ensuring customer success and strategic alignment. Requires 8+ years in large account management and fluency in German and English.

Senior Global Tax Manager will shape and execute international tax strategy, providing expert guidance on direct tax issues, M&A transactions, and cross-border matters.

Medical Director, Medical Affairs - Neurology supports European medical affairs for Myasthenia Gravis. Responsibilities include co-developing medical strategy, leading data generation, and serving as a scientific liaison. Requires PhD or MD and 10+ years of experience.

Leads a distributed team of engineers focused on resolving software defects and delivering bug fixes for open source software. Manages team performance, provides coaching and mentorship, and collaborates with other engineering teams. Requires experience with software development using C, C++, Go, Python, and version control systems.

Principal Consultant - Data & AI role advising leading financial services companies on strategy, Data & AI, and Cyber. Requires deep expertise, ownership, and a drive to build. Must be fluent in English and German.

Frisbii seeks a Partner Manager to build and grow relationships with technology, channel, and strategic partners. This role focuses on driving partner-influenced revenue and ensuring partner alignment with Frisbii's go-to-market strategy.

As Head of Operations, you will strategically build and scale Seturion’s Operations function for a DLT-based settlement and registry solution. This role requires expertise in post-trade lifecycle management and regulatory compliance.

Experienced business leaders with entrepreneurial drive are sought to join a trusted business consulting network as Managing Directors. Partners will lead and grow their own firms in North and East Germany, supporting SMEs in achieving growth and profitability.

Launch and grow your consulting office through a 12-month venture building journey. Build client pipelines in energy, mobility, and decarbonization while delivering high-impact projects. Requires 4+ years in strategy consulting or 3+ in sales/entrepreneurship.

Deliver groceries to customers efficiently by e-bike or e-scooter. Meet and exceed delivery targets while providing exceptional customer service. Earn at least €13.90 per hour plus tips.

Seeking a builder CEO to drive Fintant's growth and execution. This operator role involves leading growth, partnerships, and market expansion to scale the finance talent platform. Requires strong entrepreneurial experience.

Act as a trusted advisor and extension of the Chief Officer, Health, driving governance and execution across a complex international environment. Lead strategic initiatives, manage performance reporting, and oversee financial planning.

Late Technical Co-Founder to own the technical vision and architecture for an AI assistant used by German public administrations. Drive the AI roadmap, solve scaling challenges for telephony, and lead a senior engineering team.

Lead process consulting and software integration projects as a Master Architect for Product Lifecycle Management (PLM) and Industrial Internet of Things (IoT). Create digital transformation roadmaps and customer-specific solution architectures for PTC Windchill and ThingWorx. Manage and coordinate project teams, analyze customer requirements, and ensure successful implementation.

Experienced Head of IT and InfoSec needed to lead IT and information security functions. This role involves defining roadmaps, delivering infrastructure, and ensuring compliance with standards like ISO 27001 and TISAX.

Lead and develop a procurement team for a global manufacturing company. Define and implement procurement strategy, optimize supplier partnerships, and drive cost efficiencies.

Build Flip's consulting practice from the ground up, running pre-sales and post-sales projects. Drive enterprise deals and develop customers into operating platforms using technical and commercial expertise.