Top Tech Jobs & Startup Jobs in Cologne

Lead the design and architecture of novel optical DWDM communication systems, ensuring alignment with business requirements and industry standards. Collaborate with cross-functional teams to define product architecture and specifications, focusing on robust, reliable solutions. Engage in feature investigation and maintain system documentation.

The role involves flexible support at various camper rental stations in Portugal, focusing on customer satisfaction, cleaning campers, and contributing to team projects.

Ramboll seeks professionals skilled in Rail Signalling and Telecom to join their growing team, focusing on project execution and technical challenges.

Manage end-to-end pitches and proposals for German offices: project-manage timelines, draft persuasive, on-brand materials, maintain pitch libraries, analyze win/loss data, optimize processes, train stakeholders and leverage AI tools to improve success rates.

Draft, review, and negotiate commercial agreements; manage contract records and lifecycle; design SOPs, playbooks and legal processes; collaborate with business stakeholders and vendors; support cross-border matters and special projects.

Manage and grow institutional client relationships for OKX by driving sales, onboarding, product collaboration, upselling, and ensuring compliant, high-quality operational support.

Record short vertical, natural-feeling phone videos from provided scripts or guidelines. Deliver raw footage only (no editing). Film additional short clips for variety and ensure good lighting, clean background, and engaging on-camera performance.

Build and operate production custody systems: signing service, key management, chain integrations, and transaction pipelines. Own end-to-end subsystems, integrate new chains, collaborate with cryptography on threshold signing and key recovery, write post-mortems, and produce clear async design docs and PRs.

Review, evaluate, and annotate AI-generated multilingual and multimodal content (text, images, audio, video). Perform quality checks, identify edge cases, participate in calibration and alignment, and provide feedback to improve datasets, workflows, and annotation guidelines.

Translate and copy-edit diverse content (UI, marketing, help, regulated content) using CAT tools. Follow client style guides and localization processes, meet productivity, quality, and on-time delivery KPIs, participate in trainings, error arbitration, and quality meetings, and collaborate with remote teams while improving based on feedback.

Design, develop, and deploy high-volume, low-latency Java applications and microservices. Lead full development lifecycle, write testable code, manage releases, improve architecture, and support Agile/Scrum processes.

Build backend services and APIs to manage lifecycle of Qdrant Cloud clusters (provisioning, scaling, upgrades, backups, auth). Collaborate across teams, investigate production issues, and improve reliability, scalability, and usability of the cloud platform.