Job Description

About Kallee

Kallee is redefining how B2B companies grow in Switzerland and across Europe.

We help businesses accelerate growth through smart, hybrid, and personalized prospecting, combining human creativity with powerful digital tools.

Based right next to Lausanne train station,

Kallee

is a startup founded in 2025 by two experienced entrepreneurs from the region. We are growing fast and looking for motivated students who want to learn, grow, and gain real experience in international B2B business.

Your mission

As a

Sales Development Representative (SDR) Intern

, you will contribute directly to the growth of Kallee and our clients.

Your goal is to create the first connections that lead to high-impact B2B collaborations.

You will learn how to:

Identify and qualify B2B leads in

English, and German-speaking markets.

Conduct multi-channel outreach (email, LinkedIn, phone, automation). Design and test high-performing, personalized prospecting sequences. Maintain and update lead data in the CRM. Analyze results and suggest improvements.
You will join a

human-sized, dynamic, and agile team

, where every contribution truly matters.

What you will learn

At Kallee, your curiosity and motivation matter more than your past experience.

This internship is a

hands-on learning journey

designed to help you build strong, future-proof sales skills.

You will receive

full training and coaching

on:

Modern B2B prospecting strategies and sales psychology. The art of writing personalized, high-impact messages (copywriting). Using top sales tools: Lemlist, LaGrowthMachine, Sales Navigator, Clay, Pipedrive, Google Workspace, and more. Data analysis and real-time performance optimization.
You will receive

direct mentorship from the founders

, with regular feedback and meaningful responsibilities from day one.

Who you are

Curious, driven, and eager to learn. Communicates clearly and enjoys connecting with people. Very good level of English (native level is a strong plus). Native German Comfortable with digital tools and new technologies. Eager to gain real, hands-on experience within a fast-growing startup.

Why join Kallee

A genuine learning environment with continuous training and personalized coaching. A startup culture that is fast-paced, supportive, and creative. A data-driven mindset: everything is measured, tested, and optimized. Real impact: you will see the direct results of your work. Hybrid work possible after the onboarding period. Flexible workload: 50%, 80%, or 100%, depending on your schedule.

Internship conditions

Duration:

3 to 6 months

Location:

Lausanne (VD) - hybrid work possible

Workload:

50%, 80%, or 100%

Start date:

To be discussed during the interview.

Compensation:

Fixed + variable, depending on workload and autonomy

Recruitment process

(Only candidates holding a Swiss or European passport can be considered.)

Phone interview In-person interview in Lausanne Internship start
The

in-person interviews

for the position "Internship - Sales Development Representative (SDR) - International Market - Lausanne (3-6 months)" will take place on

Monday, November 10th

, at Lausanne train station.

The

Kallee team

, a startup founded in 2025 and located right next to Lausanne train station, will welcome candidates for an in-person meeting as part of the recruitment process.

What we expect from you

We are not looking for a perfect background we are looking for

motivated, curious people who want to learn fast

and become complete SDRs.

Hiring timeline

Applications open:

from October 23rd

Phone interviews:

October 28th - November 5th

In-person interviews:

Week of November 10, 2025

Internship start:

As soon as possible after selection /To be discussed during the interview.

To Apply

Send us a few lines about why you would like to join

Kallee

,
or a short

voice/video message

introducing yourself, to:

join@kallee.ch

Job Types: 100%, Temps partiel, Temps de travail : 90-100%, Temps de travail : 80-100%, Temps de travail : 60-80%

Work Location: Hybrid remote in 1003 Lausanne, VD