2214 ux stepstone germany English-speaking jobs in Berlin

Mercor seeks experienced Software Engineers specializing in Cybersecurity to contribute to AI research. Freelancers will design benchmark tasks, create codebases, and annotate model reasoning traces to improve AI problem-solving.

Expert in Microsoft Office Suite (Word, PowerPoint, Excel) needed for data collection project. Record screen sessions and annotate screenshots, following guidelines to ensure data quality. Must have access to a physical Mac.

Experienced Software Engineers will contribute to building training datasets for AI models focused on reasoning and problem-solving in real-world coding tasks. Responsibilities include annotating model-generated code trajectories, reconstructing reasoning processes, and ensuring annotations reflect realistic developer thought processes.

Validate and repair math/STEM question-answer pairs extracted from textbooks. Correct transcription issues, fix LaTeX formatting, and assess solution quality. Requires strong LaTeX proficiency, STEM background, and meticulous attention to detail.

Experienced meteorologists will analyze High-Resolution Rapid Refresh (HRRR) model visualizations and create natural-language labels explaining weather phenomena and their causes based solely on model data.

Experienced developers with a proven open-source track record are sought to contribute to AI, data, and enterprise software infrastructure projects. Responsibilities include designing coding problems, developing mini-repos with solutions and tests, and implementing clean, production-quality code.

Expert needed to record screen sessions and annotate screenshots of professional software (Windows, MacOS, Linux) for AI research. Must have access to a physical Mac and be detail-oriented.

Physics experts with International Physics Olympiad experience (participants, medalists, problem-setters, coaches, graders, selection committee members) are sought to write challenging physics problems for AI research.

Evaluators assess agent-generated research reports on government and public policy topics. Experience in public policy analysis, government research, or related fields is required.

Evaluate the accuracy and effectiveness of AI-powered image editing systems. Review original images, user instructions, and AI-generated edits. Assess instruction adherence, visual quality, and potential policy violations.

Expert in CAD and engineering software (AutoCAD Mechanical, SolidWorks, Inventor, Vivado) needed for data collection project. Tasks include screen recording and annotation of professional software workflows. Must have access to a physical Mac.

Experienced Software Engineers will create training datasets for AI models focused on client-side web development tasks. This includes writing prompts, rubrics, and ensuring verifiability from code and screenshots.

PhD-level life scientists with expertise in biology, omics, and computation are sought to create scientifically accurate challenges for AI models in molecular biology, genomics, transcriptomics, epigenetics, and proteomics.

Software Engineers will contribute to building evaluation datasets for AI reasoning, explanation quality, and technical judgment in coding-related interactions. Tasks involve crafting realistic developer prompts and writing clear, technically accurate model responses.

Expert software users will record screen sessions and annotate screenshots of tools like Visual Studio Code, Android Studio, Quartus, and VMware.

Master's thesis in Interactive Guidance for Navigated ENT Surgery. Develop prototypes for the Surgical Navigation System using C++, Python, and MATLAB.

Product Engineer to build and ship AI music video features end-to-end. Collaborate with a small team to turn user problems into solutions, prototyping, testing, and iterating quickly. Experience with React, TypeScript, Python, and AI integrations required. Must be based in Berlin and able to work in the office four days a week.

Mobile Test Automation Engineer to design, develop, and maintain Appium-based test suites for Android applications. Collaborate with Android developers to improve application quality and integrate automated tests into CI/CD pipelines.

Principal Product Manager – Insights will own the vision and execution of advertiser insights, building insights-driven products that fuel advertiser satisfaction, budget growth, and long-term business impact.

Senior Content Manager will lead the creation and optimization of performance-driven content for marketing campaigns, landing pages, and acquisition funnels. Responsibilities include building scalable landing pages, managing AI-generated UGC video production, and analyzing campaign performance. Experience with CMS platforms, AI-powered content tools, and UGC video production workflows is required.