Business Development Intern (mfd) Mandatory Internship

The Happy Customers is a Berlin-based startup helping German and European businesses improve their customer experience through AI-enhanced multilingual customer support teams.

We provide professional customer support via email chat and phone in more than 45 European languages working with e-commerce brands Travel Fintech online retailers and service companies across Europe.

We are a small team which means you will work directly with the founder and see how a young company builds its client base from the ground up.

As a Business Development Intern you will support our client acquisition across European markets.

Your responsibilities will include:

Researching and identifying potential clients in e-commerce Travel Fintech and related sectors

Building and maintaining prospect lists using LinkedIn Sales Navigator and similar tools

Drafting and personalising outreach messages for email and LinkedIn campaigns

Qualifying leads against our ideal customer profile

Supporting the preparation of proposals pitch decks and client presentations

Maintaining CRM records and tracking outreach performance

Researching European markets competitors and pricing

Supporting content activities drafting posts and newsletters building a content calendar and scheduling publication on our company channels

Supporting our talent pool maintaining candidate records organising language and skill data and helping coordinate screening calls

Joining client calls taking notes and gradually taking on more responsibility

Throughout the internship you will have weekly one-to-ones with the founder and follow a structured learning plan covering sales marketing recruitment and operations.

Currently enrolled in a Bachelors or Masters programme (Business Marketing International Management Communications or similar)

This internship must be a mandatory part of your study programme you will need to provide written confirmation from your university including the required duration

Available for 36 months (we strongly prefer 6 months)

Based in Germany for the duration of the internship

Strong written and spoken English; German is a significant advantage

Interest in sales business development or startups

Comfortable with research and structured self-directed work

Familiarity with LinkedIn Excel or Google Sheets

Reliable internet connection and a suitable home working setup

No prior sales experience required. We care more about curiosity and initiative than about your CV.

Direct mentorship from the founder with weekly one-to-ones

Hands-on experience across the full client acquisition cycle from research to proposal

Exposure to professional sales tools including LinkedIn Sales Navigator CRM and outreach platforms

A structured learning plan covering sales marketing recruitment and operations

Flexible working hours around your study commitments

Fully remote within Germany

A detailed reference letter (Praktikumszeugnis) on completion

Strong possibility of continuing as a working student or in a paid role subject to performance

Please note: This is an unpaid position offered exclusively as a mandatory internship (Pflichtpraktikum) forming a required part of your degree. We can only consider candidates whose university confirms the internship is compulsory.

As part of our process shortlisted candidates complete a short practical assignment (23 hours) before the interview.

The Happy Customers is an equal opportunity employer. We welcome applications from all qualified candidates regardless of gender gender identity age ethnic or national origin religion or belief disability sexual orientation marital or family status.