About Mutinex

At Mutinex, we’re not chasing unicorn status—we’re building a sustainable, long-lasting business. We're an early-stage B2B SaaS company with a proven platform, trusted by big-name clients, and already generating millions in revenue.

Our mission is bold: to build a universal business growth decision engine. Our platform empowers marketing, media, agency, analytics, and finance teams to organise, analyse, and action data at scale—unlocking and optimising the true drivers of sustainable growth.

We’re a hybrid team spread across Sydney, Melbourne, and New York. We value open communication, diverse perspectives, and a culture of continuous learning and feedback.

The Role

We're seeking an ambitious Junior Product Designer to join our growing Design Practice and contribute to our ambitious vision of building the world’s first Growth Co-Pilot.

You’ll work closely with Product Managers, Engineers and key Stakeholders throughout the entire design lifecycle - from user research, problem framing and concept ideation to detailed wireframing and polished high-fidelity designs.

As an essential member of a cross-functional team, you'll have the opportunity to influence design from discovery to execution. Additionally, in our dynamic startup environment, you'll occasionally support our Brand, Marketing, and Sales teams by developing brand assets, campaign collateral, and new business presentations.

Experience Required

• 0-2 years of experience as a UX/UI or Product Designer.

• Experience working end-to-end in the design process, employing various methodologies (personas, user journeys, empathy mapping, wireframing, prototyping).

• Experience collaborating directly with engineers to deliver thoughtfully designed products with comprehensive specifications.

• Ability and confidence to assist in planning and conducting quantitative and qualitative research to inform and validate design solutions.

• Familiarity with creating or contributing to design systems or pattern libraries.

• Solid visual design skills. Branding experience is a plus.

Qualifications & Skills

• Proficiency in Figma, adept in crafting wireframes, prototypes, and detailed high-fidelity designs.

• Experience with AI tools, particularly Claude Code, is a plus.

• Strong verbal and written communication skills, capable of effectively conveying complex concepts to diverse stakeholders.

• Innate curiosity with a desire to deeply understand customer problems. A proactive collaborator who can actively seek and integrate feedback from Product Managers, Engineers, Data Scientists and Marketing Experts.

• Commercial awareness and the flexibility to balance comprehensive process with the need for speed and agility.

• A solid portfolio with 2-3 projects that demonstrate strategic product thinking and successful execution of digital product designs.

Why Join Mutinex?

We're disrupting the traditional consulting-dominated field of Marketing Mix Modelling through cutting-edge technology. With a strong product-market fit and reputable clients already onboard, Mutinex is positioned to lead a new era in business growth analytics.

As part of our team, you'll rapidly develop high-demand UX/UI design skills by directly contributing to a product integral to the success of major Australian businesses. You’ll collaborate closely with expert Product Managers, Engineers, Data Scientists, and Marketers, significantly influencing product direction and growth.

At Mutinex, transparency, empowerment, and continuous learning are core to our culture. You'll be encouraged to ‘act like a leader’, ‘think big and act fast’, ‘learn like a machine’ and ‘speak numerically’ - all essential skills to accelerate your career trajectory.

You’ll gain first-hand experience in the rapidly-emerging fields of artificial intelligence and data science. We're at the forefront alongside disruptive global companies like Snowflake, OpenAI, Fivetran, Amplitude, Segment, and Monte Carlo. As Mutinex grows, you’ll have the chance to share in our success through equity options.

This opportunity to join an innovative, rapidly scaling data science company is rare. We’re excited to hear from passionate, ambitious designers ready to shape the future.

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 birth parent 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.