250 English-speaking jobs in Cologne

Freelance energy engineers with Python expertise are sought to design energy engineering problems, evaluate AI solutions, and validate calculations for leading tech companies.

Lead a team of platform engineers, designing and implementing infrastructure using Infrastructure as Code and Kubernetes. Experience with Databricks, Terraform, and cloud platforms is required.

Experienced UX Product Designer to improve the user experience of B2C and B2B products. Develop UX concepts, conduct user research, create prototypes, and maintain the design system. Fluent English required.

Design and build scalable SaaS products within our AI Lab. Develop and maintain data architecture for high-volume, high-throughput applications. Drive faster ML delivery by building robust MLOps foundations. Accelerate AI product development by operationalizing LLMs. Increase engineering velocity and system reliability by developing CI/CD pipelines.

Java Technical Lead to architect and lead a backend team of two Senior Developers. Expertise in Java 17/21, Spring Boot 3.x, REST/SOAP, and security principles required. Responsibilities include API design, technical quality assurance, and cross-team collaboration.

Guest Experience Experts provide a wide range of services to guide guests throughout their stay. They process operational needs, address guest requests, complete reports, and share local area information.

Supervises guest check-in, account setup, and payment processing. Ensures guest satisfaction by addressing requests and resolving issues. Trains, evaluates, and coaches employees. Maintains confidentiality and follows company policies and procedures.

Experienced Data Engineer needed to develop, optimize, and maintain data processing workflows. Strong MS SQL Server skills required, including T-SQL, XML handling, query optimization, and partitioning. Experience with batch processing and data pipelines is essential.

Leads market demand planning, delivering accurate SKU-level forecasts to the Supply team. Transforms current demand planning processes and collaborates with Sales, Finance, Marketing, and Supply Chain. Develops bottom-up demand forecasts, analyzes demand patterns, and implements reasonability tools. Drives forecast accuracy, leads root cause analysis, and collaborates cross-functionally.

Freelance recruiter needed to source and place multilingual candidates, primarily in the BPO field. Must be proficient in English and at least one additional European language. Experience with international recruitment and a strong network are essential. Commission-based compensation.

Senior Automation Quality Engineer will design, implement, and maintain test automation strategy for the Intermediate Control System (ICS). Responsibilities include automating backend, integration, and system-level validation, ensuring regression safety, performance readiness, and predictable system behavior. The role requires strong experience in backend test automation using Java, experience testing REST and SOAP services, and familiarity with CI/CD pipelines.

Senior Backend Engineer will contribute to scaling critical merchant-facing products like Payment Links, Virtual Terminal, and Unified Gift Cards. Responsibilities include implementing new features, monitoring services, and optimizing application performance. Requires 5+ years of experience in backend engineering with Golang and strong understanding of system architecture, design principles, and API design.

Guest Environment Experts maintain the appearance and cleanliness of the entire hotel, ensuring a great guest experience. Responsibilities include cleaning rooms and public spaces, delivering guest requests, and stocking carts.

Guest Environment Experts maintain the appearance and cleanliness of the hotel, ensuring a great guest experience. Responsibilities include cleaning rooms and public spaces, delivering guest requests, and stocking carts.

Performs minor plumbing repairs, such as unclogging drains and repairing leaky faucets. Completes minor repairs like tightening loose toilet seats and patching holes. Conducts preventative maintenance on tools and equipment. Follows company safety and security policies and procedures. Maintains a clean and professional appearance. Provides excellent customer service to guests. Assists with moving and lifting objects. Performs other reasonable job duties as requested.

Full-time restaurant apprenticeship starting August 2026 at Marriott Köln.

Full-time hotel apprenticeship starting August 2026 at Marriott Ku00f6ln.

Guest Experience Experts provide a wide range of services to guide guests throughout their stay. They process operational needs, address guest requests, complete reports, and share local area highlights.

Prepare ingredients, cook food according to recipes and quality standards, and maintain a clean and sanitary kitchen environment. Operate kitchen equipment and ensure food safety.

Payment Operations Specialist will test and monitor e-commerce payments, handle payment-related tickets, and create development tickets. The role involves supporting management on payment methods, assisting with system maintenance, and investigating payment issues.