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 French-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 be part of a small, 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 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).
Conversational level of French.
Comfortable with digital tools and new technologies.
Looking to gain real, hands-on experience in 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: As soon as possible
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 based 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 for This Job
Applications open: from October 23rd
Phone interviews: October 28th - November 5th
In-person interviews During the week of November 10, 2025
Internship start: as soon as possible after selection
To apply:
Send us a few lines about why you would like to join Kallee, or a short voice/video message introducing yourself, to: