About the role

Kastell is seeking an experienced Interior Designer / Showroom Sales Assistant to join our design team at our Castle Hill showroom. As a family-run business with over 40 years of experience in bespoke kitchen design and custom joinery, we specialise in creating high-end interiors for discerning Sydney homeowners, architects, builders and interior designers. This is a client-facing role combining interior design, showroom consultation and sales.

You will welcome clients into our showroom, understand their vision and requirements, and guide them through the selection of premium materials, finishes, cabinetry and joinery solutions. Working alongside our experienced design team, you will help translate ideas into considered, functional and beautifully resolved spaces. The role offers the opportunity to work across a diverse range of high-end residential projects, from luxury kitchen renovations through to full-home joinery and indoor-outdoor living spaces.

You will become an integral part of the client journey, building strong relationships and providing a personalised experience from the initial showroom visit through to design development.

Key responsibilities

- Lead clients through the complete design journey, from initial showroom consultation through to final installation

- Create bespoke kitchen and joinery designs that balance aesthetics, functionality, lifestyle and architectural detail

- Present and sell design solutions with confidence, guiding clients through premium materials, finishes, hardware and appliances

- Develop detailed drawings and documentation for client approval and in-house production

- Own the quoting and sales process, from preparing accurate project pricing through to securing the project

- Collaborate directly with our in-house manufacturing team,



ensuring every design is technically resolved and achievable

- Conduct site measures and final checks to ensure projects are accurately prepared for production

- Build solid relationships with homeowners and industry professionals, including architects, builders and interior designers

- Manage client communication throughout the project, ensuring a seamless experience from first enquiry to handover

- Stay across current interior design trends, materials and finishes, bringing fresh ideas and considered solutions to each project

What we require

- Mid-to-senior level position

- Experienced designer who can confidently manage clients and projects independently

- 3+ years' experience in kitchen design, joinery, cabinetry or residential interior design

- Proven experience designing bespoke kitchens and/or custom joinery, ideally within a high-end residential environment

- Strong understanding of cabinetry construction, materials, finishes, hardware and detailing

- Confident producing and interpreting detailed cabinetry drawings, plans, elevations and 3D designs

- Able to take a project from initial client brief through to design, quoting, approval and production

- Strong understanding of spatial planning, functionality and design principles, with a highly considered eye for detail

- Confident working independently and managing multiple projects and client deadlines

- Previous experience in a client-facing design or sales role, with the ability to build trust and confidently guide clients through decisions

About Kastell

Kastell Kitchens is a family-run business with over 40 years of experience in bespoke kitchen design and custom joinery, specialising in creating high-end interiors for discerning Sydney homeowners, architects, builders and interior designers.

📌 Interior Designer & Showroom Consultant (Castle Hill)
🏢 Kastell Kitchens
📍 Castle Hill