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KI Engineer (w/m/d)

rock&stars digital GmbH
AI/ML & Data
20357 Hamburg
1 week ago
🚀 Startup
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Explicitly requires vibe-coding / prompt coding and AI-assisted development (mentions Codex, Cursor, Claude Code) and building AI agents and automations.

About the Role

As a KI Engineer at rock&stars digital you will develop and expand AI-driven marketing processes by prototyping LLM-based applications, building AI agents and automations (e.g., with n8n), and selecting best-in-class tools. The role focuses on agent and prompt design, LLM/tool evaluation, integrations (webhooks/APIs/JSON) and supporting AI-assisted development within a marketing agency.

Job Description

Role

Join rock&stars digital as a KI Engineer to further develop AI-supported marketing processes. You will prototype and implement LLM-powered applications, set up AI agents and system prompts, and build automation flows to bring generative AI capabilities into the daily workflows of a marketing agency.

Key Responsibilities

  • Select and evaluate LLMs and tools (best-in-class) for given tasks
  • Prototype AI application possibilities for marketing workflows
  • Design and deploy AI agents and develop system prompts
  • Build automation pipelines (e.g., with n8n)
  • Implement integrations using webhooks, APIs and JSON
  • Support AI-assisted/codex-enabled development and prompt coding

Requirements

  • Solid understanding of LLM behavior (e.g., ChatGPT, Claude, Perplexity) including strengths, weaknesses and common failure modes
  • Ability to identify GenAI use cases and assess feasibility
  • Practical experience building CustomGPTs, AI agents and, ideally, automations with n8n
  • Basic coding knowledge and familiarity with webhooks, API integrations and JSON (examples mentioned: TypeScript, Python, Java)
  • Experience with vibe-coding / prompt coding / AI-assisted development (Codex, Cursor, Claude Code)
  • Strong German and good English language skills
  • Self-directed learner with good abstract reasoning

Nice to have

  • Presentation and consulting skills for workshops and client meetings
  • Experience with innovation methods (Lean Startup, Design Thinking, Rapid Prototyping)

Benefits

  • Fixed workplace with flexible working hours
  • Work from the company office (“Alte Pianofortefabrik” am Schulterblatt) or remote; company MacBook provided
  • Company credit card with monthly allowance for private use
  • Workation option within the EU
  • Dogs allowed in the office
  • Dynamic environment with flat hierarchies and a friendly team

Tech Stack

ChatGPTClaudePerplexityn8nCustomGPTsCodexCursorClaude CodeTypeScriptPythonJavaJSONWebhooksAPIs

Skills

LLM understandingPrompt engineeringAgent designAutomation designPrototypingAPI integrationWebhooksJSONPrompt coding / vibe-codingAI-assisted developmentSelf-directed learningAbstract thinkingPresentation and consultingGerman communicationEnglish communication

Experience Level

Mid

Employment Type

Vollzeit

Benefits

  • Fixed workplace
  • Flexible working hours
  • Office in Alte Pianofortefabrik (Schulterblatt)
  • Remote work option
  • Company MacBook provided
  • Company credit card with monthly allowance
  • Workation within the EU
  • Dogs allowed
  • Flat hierarchies
  • Dynamic, friendly team environment