GreenPocket GmbH

Machine Learning Engineer

• Further development of our product through AI integration based on modern LLM architectures (multi-model strategy using different Large Language Models)
• Design, implementation and optimization of RAG architectures (Retrieval-Augmented Generation) using our own vector database to connect domain-specific knowledge bases to LLMs
• Design and development of an AI agent that actively assists end users in operating the software (agentic workflows, tool-calling, memory handling, guardrails)
• Design of an integration agent that can automatically connect and configure interfaces to customer systems (e.g., REST, webhooks, events)
• Technical and strategic evaluation (buy vs. build) in the area of Intelligent Document Processing (IDP), including market analysis, PoCs and architectural decisions
• Development of robust prompt and system architectures, including evaluation, testing, monitoring and performance optimization
• Implementation of evaluation frameworks for LLM outputs (quality, hallucination rate, relevance, cost/benefit)
• Integration into existing backend and frontend systems, including API design, security and scalability
• Close collaboration with the CTO, CEO, product management, UX/UI and backend teams to define AI features with clear business value

AI & ML Engineer – Cologne-based Startup

Business Development Rep

• You will work directly with the CEO on the strategic direction of GreenPocket.
• Drawing on your broad interests, you will identify market-relevant key elements over several months to acquire new direct customers from a specific segment (e.g., trade/retail, municipalities, property management).
• From your insights you will derive concrete action items and proactively engage in initial conversations with potential customers.
• You will welcome the challenge of regularly reviewing new or updated legal requirements (including energy efficiency regulations) and assessing their impact on the company.
• You are passionate about entrepreneurship and interested in exploring growth potential in new markets.
• Market and competitive analyses are exactly your thing.
• You enjoy developing go-to-market concepts, business models for corporate customers, and innovations; you create Ideal Customer Profiles and are willing to take creative approaches.
• You independently drive your market-relevant strategic projects but know exactly when to involve internal stakeholders such as Sales, Product Management, Development, and Controlling, and you also engage with external service providers.
• You demonstrate your creative skills to us when developing marketing campaigns and customer acquisition strategies.
• You discuss all your results directly with the CEO.

Junior Business Development & Sales Manager – Smart Energy Startup

Customer Success Manager

• User Experience: You independently track the user experience of our products and systematically evaluate the results.
• Customer Happiness Manager: You create and analyze customer satisfaction surveys, derive actionable recommendations for our existing-customer strategy, and present these to project management.
• Visual Communicator: In direct collaboration with our customers, you visualize their energy infrastructure and lay the foundation for excellent customer understanding.
• Presentation Talent: You participate in customer meetings and win over our customers with compelling presentations.
• Your Own Project: You will receive your own project within Customer Success Management, which you will present to the team and the CEO at the end of your internship.

Intern — Customer Success Management – Smart Energy Startup

Events

• Social media marketing: You will independently manage our social media channels, monitor trends and benchmarks, produce analyses, and proactively develop our content.
• Campaign management: For product campaigns you will actively support the creation of specific target audience lists, newsletters and other marketing materials such as PowerPoint presentations.
• Content creation: You will create posts including images, write blog articles and product copy, and support the production of our podcast.
• Event management: You will be an important part of planning, preparing and following up on trade shows and industry conferences, and you will independently schedule trade show appointments for our sales team.
• Online marketing: You will monitor the effectiveness of Google Ads and track our monthly inbound leads.
• Brand building: Through individual creative projects you will help shape the GreenPocket brand and contribute to our growth.

Intern – Marketing & Event Management at a Smart Energy Startup

• Further develop our product by integrating AI based on modern LLM architectures (multi-model strategy using different large language models)
• Design, implement and optimize RAG architectures (Retrieval-Augmented Generation), utilizing our own vector database to connect domain-specific knowledge bases to LLMs
• Design and develop an AI agent that actively assists end users in operating the software (agentic workflows, tool-calling, memory handling, guardrails)
• Design an integration agent capable of automatically connecting and configuring interfaces to customer systems (e.g., REST, webhooks, events)
• Technical and strategic evaluation (buy vs. build) in the area of Intelligent Document Processing (IDP), including market analysis, PoCs and architectural decisions
• Build robust prompt and system architectures, including evaluation, testing, monitoring and performance optimization
• Implement evaluation frameworks for LLM outputs (quality, hallucination rate, relevance, cost/benefit)
• Integrate into existing backend and frontend systems, including API design, security and scalability
• Work closely with the CTO, CEO, product management, UX/UI and backend teams to define AI features with clear business value

AI & ML Engineer – m/f/d

• Social Media Marketing: You independently manage our social media channels, monitor trends and benchmarks, create reports, and proactively develop our content.
• Campaign Management: For product campaigns you actively support the creation of targeted audience lists, newsletters, and other marketing materials, such as PowerPoint presentations.
• Content Creation: You produce posts including images, write blog posts and product copy, and assist with the production of our podcast.
• Event Management: You play a key role in planning, preparing, and following up on trade show appearances and industry conferences, and independently schedule trade fair appointments for our sales team.
• Online Marketing: You monitor the effectiveness of Google Ads and track our monthly inbound leads.
• Brand Building: Through individual creative projects, you help shape the GreenPocket brand and drive our growth.

Marketing & Event Management Intern – Smart Energy Startup

Software Engineer

• Knowledge management and data processing: You will support the further development of an AI-supported knowledge management system by expanding and maintaining a data pipeline
• Evaluation: By building and expanding an automated evaluation framework and selecting appropriate metrics, you ensure the performance and reliability of our AI solutions
• Research and development: You investigate new approaches in AI engineering and assess their applicability for GreenPocket
• Collaboration: Together with our cross-functional teams you help integrate AI solutions into our products and processes
• Continuous learning: Develop your professional profile by gaining knowledge and experience in software development, data science and AI engineering

Mandatory Intern – AI Engineering, Smart Energy Startup

• User Experience: You independently track the user experience of our products and systematically analyze the results.
• Happiness Manager: You create and evaluate customer satisfaction surveys, derive actionable recommendations for our existing-customer strategy, and present these findings to project management.
• Visualization Specialist: In direct collaboration with our customers, you visualize their energy infrastructure and lay the foundation for a clear customer understanding.
• Presentation Talent: You take part in customer meetings and win customers over with persuasive presentations.
• Your own project: You will own a Customer Success Management project that you will present to the team and the CEO at the end of your internship.

Intern – Customer Success Management

• Knowledge management and data processing: Support the continued development of an AI-driven knowledge management system by expanding and maintaining a data pipeline
• Evaluation: Ensure the reliability of our AI solutions by building out an automated evaluation framework and selecting appropriate metrics
• Research and development: Investigate new approaches in AI engineering and assess their applicability for GreenPocket
• Collaboration: Work with our cross-functional teams to help integrate AI solutions into our products and processes
• Continuous learning: Develop your professional profile by building knowledge and experience in software development, data science and AI engineering