java English-speaking jobs in Mainz

Senior Principal Software Engineer will lead Zalando's migration to React Native, solving complex engineering challenges and ensuring a scalable, secure transition. You will champion a performance-first culture, mentor engineers, and architect core app features with performance as a primary consideration. Extensive experience developing large-scale React Native applications and deep architectural fluency in the new React Native architecture are required.

Uber Eats seeks a results-driven Account Manager to manage a portfolio of high-value restaurant partners in North Rhine-Westphalia. Responsibilities include driving business growth, identifying sales opportunities, mitigating partnership risks, and advocating for partner needs. Fluency in German and English, 2+ years of B2B sales or account management experience, and a driver's license are required.

Lab Manager responsible for formulation development of animal health products. Requires 3+ years experience in pharmaceutical industry with a focus on oral dosage forms and process scale-up. Must have strong knowledge of GMP and regulatory guidelines. Fluency in German and English required.

Novastone Capital Advisors seeks motivated professionals to acquire and lead a small to medium-sized enterprise in Germany. Successful candidates will establish a search process, manage the acquisition, and assume the CEO role. Must have 10+ years of professional experience, 5+ years in leadership roles, and 10+ years of experience running and growing businesses in Germany. Fluency in English and German is required.

Data Analyst for Finance to develop and maintain financial models, analyze business performance, and prepare reports. Requires a degree in Finance, Economics, or Business Administration and 3+ years of experience in financial modeling and data analysis. Proficiency in Power BI is required.

Launcher Assembly Technician responsible for the assembly, integration, and testing of launch vehicles. Requires vocational training in a relevant field, experience in aviation/aerospace, knowledge of gas/fluid bolting techniques, and fluency in English and German.

Leads IT projects and develops on-prem and cloud infrastructures. Designs and optimizes IT system architectures, ensuring continuous improvement. Consults on technologies, evaluates infrastructure performance, and manages integration and migration activities.

Leads, mentors, and develops a cross-functional engineering and technology team. Defines and evolves the technology roadmap for scalable, high-performance XR products. Evaluates, selects, and implements new tools, platforms, and technologies. Ensures high standards across software quality, security, reliability, and delivery. Partners with senior leadership to align technology with business strategy. Manages technology budgets, resource planning, and delivery timelines. Builds external technology partnerships and stays ahead of emerging market and technology trends.

Senior Technical Product Manager for a growing consultancy. B2B experience required, with a technical/development background and exposure to infrastructure products. Must be fluent in German (B2/C1+) and English. Remote with up to 3 days per week on client site.

Designs, develops, implements, and owns products and solutions to improve the security, reliability, and scalability of N26 cloud infrastructure and systems in the workload orchestration domain. Works with Product, customers, and stakeholders to understand their needs and build the right products and solutions.

The Leibniz Institute for Natural Product Research and Infection Biology seeks a Scientific Communication, Public Relations, and Events Officer to prepare and communicate research results and activities, particularly for the INCATE project. Responsibilities include writing accessible texts, supporting public relations activities, organizing events, and developing communication materials. The ideal candidate has a degree in media, communication, journalism, or public relations, or a natural science degree with proven science communication skills. Fluency in German and English is required.

Senior Account Executive to drive sales of Talentir's payout software in the DACH market. 5+ years of enterprise B2B sales in fintech, payment infrastructure, or compliance SaaS required.

Experienced Communications Manager needed for 12-month maternity cover. Support global communications and PR activities, manage media relationships, and coordinate events. Develop and distribute press materials, monitor industry trends, and prepare reporting. Collaborate with internal and external teams to ensure consistent brand messaging.

Research Associate (75% position) with opportunity to pursue a PhD in Innovation Leadership. Focus on international market expansion strategies, particularly in India and global markets.

Solution Architect for clinical software solutions combines technical expertise with understanding of clinical and administrative processes. Develops customer-specific solution concepts, analyzes requirements, and collaborates with engineering, product, and project management. Requires a computer science degree, strong understanding of APIs, interfaces, and system architecture, and knowledge of IT and infrastructure concepts. German fluency is required.

Support Engineer (all genders) will monitor and process tickets, providing 2nd & 3rd level support for network and security incidents. Responsibilities include analyzing, resolving, and documenting issues, collaborating with manufacturers, and developing skills through certifications.

As a System Integration Engineer, you will ensure seamless product integration, robust test processes, and high quality operational performance across global integration centers. You will own KPI management, test equipment strategy, and NPI readiness while driving continuous improvement initiatives.

ATIA Ltd seeks reseller companies to find clients needing IT systems, web applications, or ISO standard services. Partnerships offer 20-30% of project value or a markup on a base price.

Senior Manager HR Digitalization and Tools leads the development, implementation, and maintenance of HR systems and software solutions. This role develops and executes a digital transformation strategy for HR, aligning with organizational objectives.

Support Munich sales team in collaborative sales processes with a premium automobile manufacturer. Analyze market, customer, and sales data. Assist with strategic planning and logistics.