As a Technical Key Account Manager, you will be responsible for supporting our international sales partners and business customers (in Europe and worldwide) throughout the entire customer management process, from the initial quote to product delivery. In addition, one of your key responsibilities will be to support the internal sales staff in the department and provide them with optimal assistance by drawing on your in-depth technical expertise.
Losone, Switzrland
Sales
100&%
Published | 20/07/2026
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DIAMOND SA is a long-established Swiss company that has specialized in the development, manufacture, and assembly of high-precision fiber-optic components for over 40 years. The company is headquartered in Losone, Ticino, where it employs over 200 people.
Through an extensive sales network with a subsidiary and partners around the world, DIAMOND offers solutions for various markets, including photonics, telecommunications, medical technology, and aerospace.
To strengthen our sales team, we are seeking a customer- and service-oriented professional to serve as Technical Key Account Manager.
What are your main tasks?
Are you skilled at working with people, do you speak foreign languages, and do you feel comfortable working in an inside sales role?
As a Technical Key Account Manager, you will be responsible for supporting our international sales partners and business customers (in Europe and worldwide) throughout the entire customer management process, from the initial quote to product delivery. In addition, one of your key responsibilities will be to support the in-house sales staff in the department and provide them with optimal assistance through your in-depth technical expertise.
Main Responsibilities
Maintaining and expanding existing corporate accounts
Technical and commercial handling and coordination of customer projects - from the initial customer inquiry through to delivery
Preparing project documentation, price lists, and quotes
Serving as the liaison between customers, sales, development, and production
As a knowledgeable point of contact for technical questions, you will provide support and advice to customers, the field sales team, and representatives
Why You’ll Love Working Here
Flexible Working Hours
Shape your day, your way. At DIAMOND SA, flexible working hours empower you to align your schedule with your life -because great work begins with balance.
Team Spirit
Innovation thrives in collaboration. Join an international team where ideas are shared, support is natural, and true teamwork drives every breakthrough.
Time & Place to Thrive
Enjoy 25 days of paid vacation, plus public holidays, in one of Switzerland’s most scenic regions. With sunny skies, mountain views, and a setting that inspires both focus and well-being, rest and productivity go hand in hand.
Workplace Excellence
Step into a clean, well-maintained work environment built for focus and efficiency. With reliable infrastructure and thoughtful organization, we create a space where innovation and well-being naturally thrive.
What you bring to the role
This diverse and challenging role requires a basic technical education as a mechanical engineer, an HTL engineer in micromechanics, or a similar qualification, along with relevant experience in the electronics/mechanical field and additional technical or business training
You have already gained experience in a comparable role
You are characterized by a structured work style, independence, flexibility, and a hands-on approach
You’re curious about new things and find a broad range of tasks appealing
You’re accustomed to working in a team and supporting your colleagues when needed
You have good computer skills, including MS Office and, possibly, SAP
We require business-level proficiency in German, Italian, and English (both spoken and written)—additional language skills are a plus
We require a willingness to take occasional business trips.
Our experts will introduce you to the world of fiber optics through a customized training program.
Interested in joining our team?
If you feel you are a good fit for this interesting and challenging position, please don’t hesitate to submit your complete application online.
Have questions about a role? Not sure where you might fit? We’re happy to hear from you — whether you’re applying for an open position or simply want to introduce yourself. We also welcome speculative applications from motivated professionals who feel a connection to DIAMOND and what we stand for. At DIAMOND, we believe that diverse perspectives lead to better solutions. We welcome applications from all qualified individuals — regardless of background, experience, or personal journey.
Anastasia Belometti
Assistant to the Management
