About Mutinex

Mutinex is a data and marketing analytics startup transforming the multi-trillion-dollar advertising industry by challenging the traditional consulting-based approach to Market Mix Modelling.

We are expanding our team and welcoming experienced talent to collaboratively build our globally used and transformative marketing measurement product suite - GrowthOS, DataOS, MAITE.

We empower marketers by helping them to understand the value of their past decisions and the impact of future marketing spend.

With offices in Sydney, Melbourne and New York City, we encourage you to work in the way that maximises your performance.

Role Overview

We are seeking an Accountant with 3–5 years of experience to join our Finance team. This is a hands-on role that suits someone who enjoys variety, thrives in a fast-paced environment, and wants to contribute to building strong financial foundations for a growing business.

This role would directly impact our overall business as you will be working directly with our CFO, having visibility and transparency into all business operations. You will also be working closely with the Head of Talent and Legal counsel. This is a great opportunity for someone who is looking to have more ownership and opportunity to expand their skillset and exposure to business strategy.

Key Responsibilities

• Manage day-to-day accounting functions, including accounts payable, accounts receivable, payroll processing, and reconciliations.

• Prepare accurate and timely monthly, quarterly, and annual financial reports.

• Assist with budgeting, forecasting, and cash flow management to support strategic decision-making.

• Support month-end and year-end close processes and ensure compliance with accounting standards.

• Help design and implement financial systems, tools, and scalable processes as the business grows.

• Partner with internal teams (e.g., sales, operations, product) to streamline financial workflows and improve reporting accuracy.

• Monitor spend, support cost optimisation initiatives, and provide insights to management.

• Assist in setting up and maintaining financial controls, policies, and compliance frameworks.

• Contribute to capital management activities such as investor reporting, grant applications, and funding processes.

• Support external audits, tax filings, and liaise with auditors, advisors, and regulators.

• Drive process improvements and automation initiatives across finance and operations.

• Provide ad hoc analysis and support to leadership on strategic projects (e.g., new market entry, pricing models, or partnership evaluations).
  
  

About You

• 3–5 years’ accounting experience, ideally in a fast-paced or scaling environment.

• Bachelor’s degree in Accounting, Finance, or related field.

• Strong technical knowledge of accounting principles and financial reporting.

• Proficiency in accounting software (e.g., Xero, NetSuite, or similar) and Excel; exposure to workflow/automation tools a plus.

• Excellent attention to detail, with a mindset for continuous improvement.

• Strong communication skills and ability to work collaboratively across teams.

• Adaptable, proactive, and comfortable “rolling up your sleeves” to solve problems in a growing business.
  
  

Why Work With Us?

• Real Customer Impact: Your work directly shapes our platform and the success of our customers
  
  

• Challenging, Meaningful Work: Tackle complex data and infrastructure problems at scale
  
  

• Autonomy and Ownership: Drive initiatives end-to-end with support when you need it
  
  

• Learning and Growth: Collaborate with a thoughtful team of engineers and data scientists who love what they do
  
  

• Equity Ownership: All team members receive equity (ESOP)
  
  

• Parental Leave: 12 weeks paid leave for the primary carer, and 6 weeks for the secondary carer after 2 years
  
  

• Generous Time Off: 20 days of annual leave to start, plus 5 extra days after your first year, and 1 additional day each year after that (up to 30)
  
  

• Work from Anywhere: Take your laptop and work from anywhere in the world for up to 6 weeks each year
  
  

We’re Committed to Inclusion

Mutinex is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We welcome applicants of all backgrounds, experiences, identities, and abilities.

If you need adjustments or accommodations during the application process, just let us know, we’re happy to support you.

Ready to Join Us?

If this sounds like a place where you’d thrive, we’d love to hear from you. Send us your resume and a short note about why this role excites you—we care more about what drives you than perfect formatting.