Proposal & Estimating Manager | Sydney

Job Description

Southland Filtration — a family-founded business with 28 years of success, now a national leader in water filtration solutions. From humble beginnings in Hobart, they've expanded to vibrant offices in Brisbane, Sydney and Melbourne, building a reputation for excellence, innovation, and integrity. They provide end-to-end water filtration solutions for commercial and industrial clients across Australia.

They are a tight-knit, high-performing team with a culture is grounded in support, humility, continuous learning, and a shared drive to deliver outstanding results. If you're looking to build not just a career, but a meaningful journey with a company that values its people — this is the place for you!

About the opportunity

Southland filtration is seeking a Proposal & Estimating Manager to take ownership and coordinate their bid and proposal processes in support of their frontline Sales team. This role sits at the heart of how they win business and deliver technical excellence to their clients.

This is a hybrid role, to be based in Morningside, QLD or Prestons, NSW.

What You'll Do

• Lead proposal development from concept through to submission.
• Approve solution designs to ensure compliance with client and company standards.
• Manage solution costing and resource allocation for process engineers and estimators.
• Collaborate and coordinate internal teams and external suppliers.
• Take ownership, review and approve tender and contract documentation.
• Support Sales team with bid support preparations and presentations for closing deals.
• Drive continuous improvement through post-bid reviews.
• Report to Head of Sales with insights, forecasting and lead time updates. 

What you'll need to succeed

• Proven experience in proposal preparation, estimating, or project delivery.
• Knowledge of water treatment design and operations (desirable).
• Excellent problem-solving, communication, and leadership skills
• Financial and project management proficiency.
• Ability to manage cross-functional teams and complex projects.
• Driven by results and committed to continuous improvement

Why Join Southland Filtration?

• Career Growth: Pathway to leadership roles (e.g., Head of Engineering or Business Unit)
• Flexibility: Hybrid work options and interstate travel
• Supportive Culture: Be part of a positive, respectful, and collaborative environment
• Make an Impact: Help shape critical infrastructure across industries Australia-wide

Apply Now

Ready to step into a role where your expertise will be valued and your growth supported? Join a company that's big enough to matter and small enough to care.

📩 Apply today with your resume and cover letter outlining your fit for the role.