freelance English-speaking jobs in Bielefeld

Maintain, optimize, and ensure reliability of a complex computer vision pipeline. Lead technical vision and roadmap for specific parts, developing new components and adapting existing models. Manage the data lifecycle for models, from annotation guidelines to data quality. Write production-level Python code and manage model training and evaluation.

The Venture & Innovation Analyst researches emerging technologies, analyzes market trends, and supports innovation strategies. The role involves project execution, monitoring progress, and collaborating with various teams.

Develop and enhance customized software solutions using Java, JavaScript, and related technologies. Contribute to backend development, frontend design, and the entire development lifecycle.

Regional Sales Manager will drive sales growth and manage client relationships within a designated region. Lead a sales team, develop sales strategies, and collaborate with cross-functional teams.

Product Engineer will own and build customer-facing experiences, experimenting, improving, and iterating on products. Responsibilities include collaborating with Product and Design, using analytics and experiments to optimize features, and building and deploying code with a 'build it, run it' mindset. Requires 5+ years of experience in JavaScript, React, NextJS, and TypeScript, experience with AI tools and methodologies, and fluency in English.

Become a part of a team leading the AI-first data revolution. Learn and contribute to our internal knowledge base, marketing, and sales processes. Support recruiting, operations, and people operations. Manage projects and potentially grow into a chief-of-staff role.

Software Architect needed for large-scale enterprise platforms. 5+ years commercial software development experience required, 2+ years as a Software Architect or Technical Lead. Strong knowledge of algorithms, data structures, and system design. Experience designing and evolving architectures using .NET, C#, .NET Core, and Web API. Experience with relational databases, cloud-based solutions, and Agile/Scrum teams.

Supports the Managing Director on strategic planning, execution, and cross-functional projects. Prepares presentations, board materials, and decision memos. Drives initiatives across sales, operations, finance, and engineering.

Heidelberg International School seeks an experienced and inspirational leader to serve as Secondary School Principal. The role involves leading a teaching team, developing instructional programs, ensuring student success, and fostering positive relationships within the school community.

Entrupy seeks an experienced Watches Authentication Expert to build and grow a world-class watch authentication program. The role involves authenticating watches in real time, contributing to knowledge systems, and training the team on new models and market trends. Expertise in luxury watch brands such as Rolex, Omega, Cartier, Audemars Piguet, Patek Philippe, and TAG Heuer is required.

Senior Full-Stack Engineer to develop the next generation of financial user experiences. You will design, implement, and test new features using TypeScript in a NodeJS environment with ReactJS. Experience with RESTful APIs, continuous integration, and AWS is required. Fluent English is necessary.

Leads a team of software development engineers, security engineers, and data scientists to develop security solutions at scale. Manages the definition and development of multi-tier web services and has experience with the full software development life cycle.

Power BI Developer needed for a 3-6 month project. Migrate existing Excel reports to automated Power BI dashboards. Build data models, queries, and refresh processes. Connect data sources and work with stakeholders to refine reporting needs.

Lead implementation of utility-scale BESS projects, supporting project lifecycle phases and designing innovative contracts. Collaborate with stakeholders and contribute to business development.

Platform Architect to shape and evolve the architecture of the Procurement platform. Responsible for translating business needs into architectural designs and roadmaps. Requires expert experience in procurement processes, systems, or SaaS platforms, wholesale, retail, and supply chain technology landscapes, and Oracle 12 products.

Manage and develop digital marketing campaigns with partners for Lufthansa Group airlines. Acquire new partners, define campaigns, and steer marketing agencies. Drive data commercialization strategies and assist in transitioning campaigns to a first-party data approach.

The Sales Representative will sell Winkhaus access control products (mechanical and electronic profile cylinders) in the Walloon area. They will advise customers, develop the customer portfolio, and achieve sales targets.

Digital & Area Sales Manager will develop and execute digital sales strategies for the meso'me brand and international sales strategies for all MD Skin Solutions brands. The role includes e-commerce management, international market development, client relationship management, and reporting.

Android developer needed for Job Search and Recommendations team at XING's Porto office. Collaborate with cross-functional teams to deliver new features and build a great user experience. Must have experience with Kotlin and Android development, and be comfortable with Jetpack Compose and the Classic UI frameworks.

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 strategies.