java English-speaking jobs in Mainz

Senior Backend Engineer (C#/.Net) will design, develop, test, and ship robust software applications, APIs, and workflows. Experience with C#, .NET framework, cloud-based applications, microservices, and RESTful APIs is required. Familiarity with Azure, SQL Server, and messaging platforms is a plus.

Develop, automate, and enhance end-to-end reporting solutions for energy trading and portfolio management.

Leads technical proposal development, customer onboarding, and end-to-end project delivery. Manages project P&L, risk, and change requests. Develops and mentors the proposal and project management team.

Coordinates Third Party Oversight duties with Business Owners and Second line functions for all Third Party Engagements. Responsible for the Third Party Oversight including maintenance and central storage of TPRM Documents, Contracts and Third Party master data. Guides, advises and supervises Business Owners to identify non-compliant Third Party Engagements.

As a Lead Solution Consultant for the DACH region, you will serve as the technical authority between Docusign's Intelligent Agreement Management (IAM) platform and customers. You will partner with sales teams to understand customer challenges and build integrated solutions, translating goals into operational workflows.

Painter needed for Wheels and Brake Shop in Norderstedt. Responsibilities include inspection, preparation, and painting of wheels and brakes according to documentation. Requires completed training as an aircraft/vehicle painter or similar, relevant experience, and understanding of technical drawings.

As a (Senior) Platform Engineer, you will design, implement, and maintain cloud environments using Infrastructure as Code. You will build tools and services to support development teams and improve infrastructure maintainability. You will also consult with developers on cloud-native technologies and contribute to observability strategy and CI/CD automation.

Experienced .NET Developer sought to enhance Luware's Nimbus call center solution. Responsibilities include designing, developing, and deploying cloud services, collaborating with stakeholders, and mentoring junior engineers. Must have 5+ years of backend service development experience, experience with AI technologies like OpenAI and Copilot, and a strong understanding of software engineering best practices.

Leads a team responsible for issuing invoices, managing collections, and settling commissions for Business Partners. Requires an MBA in Accounting & Finance, 10+ years of experience, and proficiency in English and German.

Industrial Engineer (m/f/d) with expertise in MES and SAP to optimize production processes in semiconductor equipment manufacturing.

Data/AI Consultant to lead and deliver high-impact AI projects for clients. Requires a Master's degree and experience in data/AI consulting and managing enterprise-scale AI solutions.

Freelance Instructor for Industrial Cybersecurity Foundation (Level 1) & Professional (Level 2) training. Deliver sessions on IEC 62443, ISMS, and ISO 27001 standards. Prepare and present complex topics for diverse audiences. Bachelor's or Master's degree in Computer Science or comparable qualification required. At least 3 years of IT experience, including 2 years in information security. Proven experience in Industrial Security and strong knowledge of relevant standards. Fluent in German and English. Pedagogical qualification or equivalent training.

Install, maintain, and troubleshoot onboard IT infrastructures including servers, virtual machines, and networks. Provide remote support for vessels worldwide, ensuring stable satellite and mobile internet connectivity.

Support and Operations Engineer will manage, monitor, and optimize SaaS environments. Responsibilities include troubleshooting customer issues, coordinating changes, and documenting systems. The role requires a degree or equivalent in computer science and experience with Linux, networking, and REST API interfaces.

Area Sales Manager (m/f/d) for Latin America and Brazil. Supports dealers and sales companies in sales, product training, and application consulting. Requires proficiency in English and Spanish, with Portuguese beneficial.

Working Student in Central Europe Finance will support daily accounting operations, closing activities, and cross-border financial coordination. Responsibilities include accounts payable and receivable, monthly/quarterly/year-end closing, financial record maintenance, audit documentation, and compliance with accounting standards.

Architect and build the data platform backbone, focusing on distributed computing stability and caching strategies. Design ETL pipelines and establish data lineage and metadata modeling infrastructure.

Intern will support consulting and services engagements, prepare customer presentations, and conduct analysis. Responsibilities include supporting projects, preparing presentations, and conducting administrative tasks. Strong interest in Operational Resilience and/or Risk topics is required. Fluency in English is essential.

German-speaking Prompt Engineer to design and optimize prompts for large language models used in healthcare documentation. Responsibilities include conducting prompt experiments, analyzing outputs, and collaborating with internal teams. Requires experience with LLM prompt engineering, Python programming, and Git workflows. Fluent German and English required.

CMS seeks an experienced Digital Marketing Manager to lead content strategy across digital channels, focusing on performance, consistency, and user experience. The role involves setting editorial standards, overseeing the CMS website, and driving continuous performance improvements.