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Business Development Manager - National

Drive growth in the water & wastewater sector | National role | High-impact opportunity

  • Drive growth in the water & wastewater sector
  • National role - significant domestic travel
  • Privately owned growth company

The Company

Guaranteed Flow Systems (GFS) is a leading New Zealand-owned company specialising in delivering water, wastewater, and process solutions since 1994. With a strong reputation for reliability, innovation, and customer satisfaction, they serve clients throughout New Zealand with cutting-edge solutions backed by sound engineering principles and a commitment to excellence.

  
The Role

We’re looking for a dynamic Business Development Manager to accelerate growth in a competitive market and contribute at a strategic level.  Working side-by-side with the owner, you’ll shape sales, marketing, and channel strategy while also driving hands-on business development. This is a chance to secure high-value projects, deepen existing relationships, and expand their market presence.

You’ll collaborate closely with the operational leaders in a small, agile team where your impact is immediate and visible.

With a head office based in East Tamaki, your location across Auckland can be flexible as most clients are within driving distance across Auckland, Waikato, and Tauranga, with occasional travel further afield. 

The package includes a company vehicle, commission, performance bonus, and comprehensive insurance.
  
Key Responsibilities Sales & Opportunity Generation
  • Proactively prospect and qualify leads to maintain a robust pipeline.
  • Dedicate focused time every day to identifying new business across core industries.
  • Present solutions in a consultative, technically credible manner.

Client Engagement & Relationship Management
  • Build strong relationships with decision-makers from engineering teams to senior executives.
  • Deliver compelling presentations at industry events, networking functions, and engineering institutes.
  • Manage long, complex sales cycles with clear, transparent communication.

Market Insight & Strategic Growth
  • Monitor market trends and competitive activity to identify new opportunities.
  • Partner with technical teams to ensure proposals are both technically sound and commercially viable.
  • Apply rigorous discovery and follow-through techniques to create lasting industry contacts and repeat business.
      
What We’re Looking For
  • 3–5+ years in business development, sales engineering, or technical solution selling.
  • Proven experience working with councils or in the civil, water, or wastewater sectors.
  • Engineering or technical background with confidence managing long, complex sales processes.
  • Charisma, drive, and the ability to build a strong professional network.
  • Hunger for growth, motivation to succeed, and enjoyment of time in front of customers.

As part of the recruitment process, GFS engages a specialist sales consultant to support new hires with coaching and professional development. After an initial screening of strong candidates, the next step is an online sales assessment (approximately one hour). 

This assessment is designed to clarify whether this type of role is the right fit and becomes part of your personalised onboarding and development plan if you join the team.

  
What's in it for you? 
  • Competitive salary, car allowance, commission, and bonus structure that rewards success.
  • Direct access to the owner and leadership team for mentorship and strategic input.
  • Career development support from a professional sales coach.
  • Autonomy, trust, and the tools to make a tangible impact on a respected, values-driven company.
  • A collaborative environment with deep technical expertise and long-standing client relationships.
      
Sound like you?
If you’re ready to lead business development in a meaningful sector and thrive on solving real-world challenges with technical solutions, we’d love to hear from you.