Technical Sales Manager

As our Technical Sales ManagerBeNeLux , you will play a key role in expanding and strengthening our presence in the BeNeLux region, primarily within the process industry. After an internal training period, you will take full ownership of developing new business opportunities, managing customer accounts, and driving market growth.

You will be a vital member of the sales and calculation team, reporting directly to the Managing Director. In this role, you will maintain and deepen relationships with customers, prospects, and colleagues, providing expert technical guidance, identifying opportunities for innovation, and ensuring our solutions consistently meet client needs.

This position offers the opportunity to work in a collaborative environment, contribute to strategic market development, and make a tangible impact on the company’s growth and success.

Tasks

• Actively manage existing customers while seeking new opportunities with prospects and dormant clients.
• Proactive business developer skilled in cold calling and opportunity spotting.
• Understand market trends and customer needs in plastic piping to drive sustainable growth.
• Solve customer challenges by developing concrete solutions in collaboration with colleagues, across projects from repairs to new constructions.
• Build strong networks and act as a trusted discussion partner at all organizational levels.
• Oversee project follow-up, coordinate with internal teams on quotes and calculations, contribute to sales planning, and expand Thermopol’s presence in BeNeLux and neighboring countries.

Profile

You have a higher thinking and working level, supported by a diploma or relevant experience.

You possess several years of commercial experience with proven results in sustainable portfolio growth.

Affinity with piping, plastic piping, or the process industry is an advantage.

You are a communicative, entrepreneurial self-starter with a strong commercial mindset.

You have a hands‑on mentality, are a dynamic team player, and fluent in Dutch, English, and French.

What we offer?

We offer a challenging career in the exciting plastics industry, within a team that can be described as no-nonsense, enthusiastic, and hard‑working. At Thermopol Kunststoftechniek, there is an open culture and a flat hierarchy. The employment conditions at Thermopol are excellent.

Attractive salary package: gross monthly salary, including holiday allowance and a 13th month.

Tools to work efficiently: laptop, smartphone, and net allowance for professional internet use.

Benefits and insurance: group insurance (pension plan) and meal vouchers.

Company car

Time off: 20 statutory vacation days per year, plus 12 additional days (ADV) and seniority leave.

A comprehensive package combining financial rewards, practical tools, and generous leave entitlements.

About Thermopol Kunststoftechniek

Thermopol Kunststoftechniek ( ) is a leading player in the plastics sector in Belgium and the Netherlands. Our expertise lies in designing, producing, prefabricating, and installing high-quality plastic piping systems (GRP, Thermoplastics, and GRE). From our modern workshop in Essen, we also create a wide range of plastic constructions and components, as well as carry out repairs. These solutions are primarily used in the process industry, where reliability and quality are essential.

Our success is built on five pillars that we put into practice every day: customer focus, team spirit, flexibility, quality, and safety. Thanks to these values, we have become a trusted partner for our clients, with attention to both technical excellence and sustainable collaboration.

Thermopol is part of the international group Plasticon Composites ( ), which is active worldwide in the development and application of plastic solutions for industrial projects. This provides us with access to international expertise, innovative technologies, and a broad network, while allowing us to remain agile and locally engaged.