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The Company


Our client Avarni, is a Sydney-based, AI-powered carbon accounting and decarbonisation platform helping organisations measure, analyse and manage Scope 1-3 greenhouse gas emissions to meet emerging sustainability reporting requirements.

Backed by Main Sequence Ventures (CSIRO’s venture fund), Avarni is scaling rapidly as over 6,000 Australian companies prepare to comply with AASB S2 climate-related financial disclosure standards between 2025 - 2027.

Trusted by leading organisations including CSL, Latitude Finance, Hutchinson Builders and Cement Australia, Avarni combines automation with expert advisory support to replace spreadsheets with a fast, accurate, audit-ready platform.

With strong revenue growth, recent capital raising, and a product evolution underway, Avarni is entering its next phase of scale - and this role is central to that journey.


The Role


Reporting to Co-founder & CEO, the Sustainability Lead will sit at the front line of delivering Avarni’s exceptional bespoke service to customers. This is a high-impact, client-facing role responsible for onboarding and managing a portfolio of enterprise and mid-market Australian organisations implementing mandatory sustainability reporting under AASB S2 and ASRS.

You will operate as both a subject matter expert and strategic advisor - guiding finance and compliance teams through carbon accounting (Scope 1-3), ensuring audit-readiness, and embedding best-practice reporting processes through Avarni’s platform.

As the company scales, you will also play a key role in shaping the Customer Success function and feeding client insights directly into product strategy.


Key Roles and Responsibilities

  • Lead onboarding and implementation for new Australian customers, managing multiple concurrent engagements
  • Act as the sustainability SME, advising clients on GHG Protocol, Scope 1-3 emissions and AASB S2 compliance
  • Support customers in preparing audit-ready carbon disclosures and responding to methodology queries
  • Run regular check-ins, strengthen executive-level relationships, and ensure renewals are earned through value delivery
  • Translate customer feedback into actionable product insights, working closely with the CEO and product team
  • Communicate and demonstrate new platform features and drive adoption
  • Build scalable customer success processes as onboarding volumes increase


About You


You are a technically strong sustainability professional who enjoys working in the detail, but equally thrives in front of CFOs, finance teams and senior sustainability decision-makers.

You likely come from a sustainability consulting, audit or advisory background (Big 4, mid-tier or specialist firm), and have hands-on experience with enterprise clients navigating carbon accounting and climate disclosure requirements.

You are structured, highly organised, commercially aware, and excited by the opportunity to help scale a high-growth Australian ClimateTech business.


Required Skills and Proficiencies

  • 3+ years’ experience in sustainability consulting, carbon accounting, climate reporting, or ESG advisory
  • Strong knowledge of GHG Protocol and climate disclosure frameworks (TCFD, AASB S2 / ASRS)
  • Experience supporting audit processes or preparing audit-ready sustainability disclosures
  • Proven ability to manage multiple complex client engagements simultaneously
  • Strong executive-level communication and stakeholder management skills
  • High attention to detail with strong data and project management capability
  • Australian citizenship or permanent working rights


The Rewards and Culture

  • Join a rapidly scaling, VC-backed ClimateTech with strong market traction
  • Direct exposure to founders and executive leadership
  • Play a defining role in shaping the Customer Success function
  • Work with leading Australian organisations foundational to the economy
  • $120,000 + super
  • Future ESOP opportunity as the business continues to scale
  • Hybrid working model (initially 3-4 days in office during onboarding; minimum 2 days long-term)


This is an opportunity to move beyond traditional consulting into a role where you can influence product strategy, build long-term client capability, and contribute meaningfully to Australia’s climate reporting transformation.


How to Apply

Apply now by submitting your current CV (in Word format) via our online application process.

For a confidential discussion or to review the information pack and full PD please contact Liz Floyd on +61 411 88 44 28.


To be eligible to apply, you must have unrestricted rights to work in Australia.

Talent Nation encourages applications from Aboriginal and Torres Strait Islander people and people of all cultures, abilities, sex, and genders.

Applicants can request a reasonable adjustment at any stage during the recruitment process.


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