Growth & Sales Intern (f/m/d) (Stealth AI Energy Venture)

Merantix

Berlin permanent

Posted: December 11, 2025

Job Description

What we do:
Join the stealth AI energy venture redefining how businesses buy and manage electricity.

Energy markets are volatile, complex, and still built on outdated systems. Mid-sized companies pay the price — overpaying for electricity while lacking access to the sophisticated tools large corporates use to manage risk.

We are a stealth AI energy venture, backed by Merantix, Europe’s leading AI venture studio. Our mission: build the first AI-native energy supplier that helps businesses buy, manage, and optimize their energy — autonomously.

We’re combining deep energy market know-how with cutting-edge AI to bring transparency, automation, and intelligence to one of Europe’s largest and most under-innovated markets.

If you want to learn how to scale a B2B venture from 0 to 1, this role is your front-row seat.

Your role:
As a Growth & Sales Intern, you’ll work directly with the CEO to identify opportunities, build scalable outreach processes, and convert interest into traction. You’ll operate at the intersection of growth, sales, and strategy, helping shape how the company goes to market.

You will:

• Shape our growth strategy: Experiment with new channels, test messaging, and build scalable lead generation systems.

• Own lead sourcing: Identify and qualify promising companies that fit our target profile — from industrial SMEs to large energy consumers.

• Support customer acquisition: Engage with prospects via email, LinkedIn, and events; help move leads through the funnel.

• Automate and scale: Use modern tools (e.g., Apollo, HubSpot, n8n, Notion) to streamline workflows and track performance.

• Contribute to sales materials: Help craft decks, one-pagers, and proposals for customers and investors.

• Feed insights back into strategy: Collect customer feedback and market learnings to inform product and growth decisions.

Your profile:
• You’re currently pursuing a Bachelor’s or Master’s degree (Business, Economics, Engineering, or related field).

• Analytical and entrepreneurial mindset — you enjoy solving problems and finding patterns in data.

• Curious about AI, energy, and B2B SaaS — and how they intersect.

• Confident communicator who enjoys reaching out, presenting, and building relationships.

• Comfortable exploring automation tools.

• Self-starter: you thrive in fast-moving, unstructured environments.

• Fluent in English and German

• Ideally based in or willing to relocate to Berlin.

What we offer:
• Hands-on experience: Learn how to grow and sell in a B2B AI startup from day one.

• Exposure: Work directly with the CEO across strategy, sales, and execution.

• Steep learning curve: Gain a full understanding of growth, automation, and customer development.

• Culture: Small, driven, and collaborative team focused on speed and ownership.

• Network: Embedded in the Merantix AI ecosystem at the AI Campus Berlin.

• Career growth: Potential for ongoing collaboration as a working student or full-time hire.

Details:

• Start date: ASAP

• Location: Berlin (AI Campus) with hybrid flexibility

• Duration: 6+ months

• Compensation: Competitive internship salary

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