As a technical commercial employee you are the centipede in the company.
You have administrative tasks, you give technical advice, you work commercially in the showroom, etc.
A selection of your tasks:
You process orders that come in by mail and telephone
You prepare and send quotations
You prepare the invoicing
You answer customer questions
You help customers in the showroom
You prepare the production planning
You can present relevant experience
You have a good knowledge of Excel (working with rows, columns, formulas, sorting, …)
You can work independently and know how to tackle
You work accurately
You are technically inclined
You have a numerical insight