java English-speaking jobs in Mainz

Administers time and attendance for approximately 80 drivers and white-collar employees, ensuring compliance with German Traffic Regulations, the Work Time Act, USAREUR instructions, and Collective Tariff Agreement stipulations. Manages travel authorizations, advance payments, and expense claims.

Client Accountant to coordinate financial matters for international clients, providing bookkeeping, reporting, and audit coordination support.

Manage the local Business Field (BF) strategy and achieve commercial targets (P&L), including sales, costs, and EBIT. Lead and develop the local BF team, ensuring implementation of performance processes, IT tools, and quality management.

Senior Electronics Engineer needed for challenging projects requiring analytical skills, firmware understanding, and experience with motor control systems, power electronics, and communication protocols. Must have experience with schematic design, PCB layouts, and testing.

ATIA Ltd seeks reseller companies to find clients needing IT systems, web applications, or ISO standard services. Partners receive 20-30% of project value or set their own price on a base price provided by ATIA.

Execute KJUS sales strategy across ski, golf, and lifestyle categories in Central and Southern Germany, focusing on wholesale and B2B channels. Drive sales growth, manage budgets, and strengthen brand presence.

North Vector Dynamics seeks a part-time European Sales and Partnerships leader to develop the European market for defense technology. The role involves managing the full sales cycle, building strategic partnerships, and engaging with defense ministries and prime contractors.

Software Development Engineers design, build, and operate innovative products and services using cloud-native architectures and microservices. They collaborate with cross-disciplinary teams, write clean code, and participate in code reviews and technical discussions.

Provides support for content creation, business operations, and external outreach. Assists with administrative tasks, marketing initiatives, and stakeholder relationships. Develops and edits content for various platforms, conducts research, and manages online communities. Supports project tasks, prepares presentations, and assists with business support functions.

This is a non-traditional CFO role for a high-growth technology company. The successful candidate will lead financial strategy, investor relations, capital raising, and strategic transactions. The CFO will serve as a strategic partner to the CEO and Board, shaping the company's future through growth, acquisitions, and partnerships.

Apex.AI seeks an experienced Head of IT and InfoSec to lead IT and information security functions. This role combines strategic leadership and tactical IT operations. Responsibilities include managing cloud and on-prem IT systems, implementing security controls, and collaborating with engineering and product management.

The NUCLEATE Excellence Cluster at the University of Würzburg seeks PhD or Postdoctoral Researchers in nucleic acid sciences and technologies. Applicants for a PhD position must hold a Masters degree, while postdoctoral applicants require a doctoral degree in a relevant field.

Serves as primary point of contact for global automotive customers, managing full order process, logistics, and forecast execution. Drives process improvements, collaborates with cross-functional teams, and ensures on-time, compliant execution.

Senior Security Architect needed to design, implement, and improve enterprise security architectures and strategies. Experience in IT and OT security, risk assessments, and security roadmaps required.

As Interim Senior Brand Designer, you will own the creative pipeline and evolve the Edurino identity, turning marketing needs into high-standard visual stories. You will lead the conceptualization and visual identity for major campaigns and seasonal events, producing high-quality assets across digital and print touchpoints.

The Research Infrastructure Specialist (Postdoc) for Trusted Research Environments will translate TRE governance, research, and data-access requirements into technical specifications. The role involves coordinating between researchers, IT specialists, data curators, legal/data protection experts, and user communities. Responsibilities include designing, testing, and documenting secure TRE workflows and supporting the operational implementation of legal requirements in TRE processes.

After Sales Service Specialist for North Africa will manage customer communication, interface with sales and order management, and process service and maintenance offers. Requires a degree in industrial engineering or comparable training with experience, technical understanding, and fluency in German, French, and English.

Configure and enhance Workday's Core HCM module, partnering with stakeholders to translate business needs into system design improvements. Provide support to SumUppers using Workday and build reliable reports and dashboards.

As Chief Operating Officer, you will own end-to-end company operations, translating strategy into execution and ensuring the organization scales. You will lead financial operations, establish governance frameworks, and drive cross-functional alignment.

Electronics Technician needed for aircraft maintenance within the LUNA ATP system. Responsibilities include manufacturing, repairing, and testing system units, assemblies, and cable harnesses. Requires vocational training as an electronics technician, experience in electronics/electrical engineering, and fluency in German.