We Work With
Change Makers
It's simple, we work with those that genuinely care about their people and customers and are in the business of making a positive difference in their customers' lives. We only partner with leaders that are serious about making change, and want to have a good time while doing so. Is that you?
We specialise in working with for- purpose organisations across aged care, healthcare, education, and government human services. Our expertise lies in transforming these sectors through innovative strategies, process improvements, and hands- on implementation. We’re here for organisations that are serious about making a positive impact and are ready to take the next step towards lasting change.
Our Purpose:
Changing the world for the better one idea at a time.
It is simple yet profound. We’re here to help you make a difference, and we can’t wait to get started.
Values:
We’re a values-led organisation through and through. We live our values, talk about them, and stand by them every single day.
CHALLENGE
We don’t know everything, and that’s okay. What matters is that we're always ready to find solutions. We challenge each other's thinking and push ourselves to keep learning.
HAPPINESS
We believe in finding joy in the work we do, especially when it gets us thinking. It’s not about being happy every single day, but about creating moments that make us love the journey.
AUTHENTICITY
We bring our whole selves to work, just as we are at home. Our different conversations and perspectives make us more creative.
NURTURE
Uplifting others is key. We support our team’s growth and help our clients learn new things, fostering an environment where everyone can succeed.
EXCELLENCE
Nobody’s perfect, but based on our happy clients and their feedback, we’re pretty close. We take pride in delivering high-quality work that exceeds expectations.
HOW IT ALL STARTED
Nina, our founder, realised that making a service stick requires more than just delivering a pack of solutions; it involves uplifting the team and guiding them through the change. She had worked in multiple organisations and recognised a gap in the market between process and service design. And thus, Three6 was born, with a mission to create lasting impact by bridging the gap and ensuring services don’t just work, but thrive.
The Story Behind the Name
Ever wondered why we’re called Three6?
The truth is, it was a nod to Nina’s birthday! At 17, she came up with the name while travelling around Melbourne teaching maths, English, and science to students aged 3 to 18. She’s always loved numbers, and helping people succeed has been her passion from day one. And yes, the name might be a reminder to send her a birthday shoutout— because, let’s be honest, who doesn’t love a little extra love on their special day?
WHERE WE ARE HEADING
We’re on a mission to empower for- purpose organisations in aged care, healthcare, education, and government human services. We’re expanding our reach, working with more organisations dedicated to making a positive impact. We believe that by helping these organisations operate at their full potential, we’re not just supporting them— we’re shaping the future of communities across Australia.
Work With Us
Our People
At Three6, our people are more than just experts— they’re the driving force behind everything we do. We’ve brought together a team of passionate individuals who are not only brilliant at what they do but are also committed to making a real difference.
Nina Muhleisen
Founder & Principal Consultant
Amelia Hosseini
Executive Partner, Senior Consultant
Desiree Grant
Executive Assistant
Tara Heylin
Principal Consultant, Head of Process
Jules Rountree
Consultant
Georges Klopotowski
Senior Consultant
Mia Andrea Uy
People & Operations Partner
Nina Muhleisen
Founder & Principal Consultant
Nina is a big-picture thinker. She’s passionate about change and making our future a great place to live, work and play. Solving problems is critical to this mission and finding the right method to get it done, and developing the skills and mindset necessary for organisations to achieve their goals. This passion for making change stick is one of the key reasons Nina founded Three6.
Starting her career as a Mechanical Engineer, she has always focused on designing simple solutions valued by customers. With significant experience in delivery, she has carried this philosophy across companies and industries, working to ensure sustained integration of customer-centric transformation.
Nina brings a blend of technical expertise and a genuine focus on people. With specialised skills in design sprints, having been trained by the leading experts in Berlin. This, alongside a strong background in design thinking, product and process design, and business optimisation using automation, AI, and process improvement, makes her an industry expert in simplifying the way we work. Her expertise is in large-scale cultural transformation, delivered through strategic management, capability uplift, and change management practices.
What can Nina help you with?
Innovative thinking to create practical solutions for the future
Human-centred strategy, to ensure you reach your outcomes
Designing and implementing roadmaps
Developing organisational capabilities through target operating models
Service and process design to build great customer experiences
Facilitating collaboration and teamwork
Leading sustainable change management to make it stick
Tara Heylin
Principal Consultant, Head of Process
Tara is dedicated to improving processes for everyone. She enjoys collaborating with people from different departments to create a culture that is not only efficient but also fun and focused on customer success. Tara has a talent for inspiring teams, sparking new ideas, and getting things done.
With a background in change management and process improvement, Tara helps guide organisations through transformations big and small. She’s great at bringing people together and making sure everyone’s on the same page, which makes her a vital part of our team.
What can Tara help you with?
Streamlining business processes
Fostering operational excellence and innovation
Human-centred design for process improvement
Boosting performance and engagement
Aligning teams with strategic goals
Facilitating collaboration and teamwork
Driving organisational change
Georges Klopotowski
Senior Consultant
Georges is dedicated to helping clients generate innovative ideas that have a real impact. He works closely with teams to understand their challenges and turn those into real, impactful solutions.
With extensive experience in complex project management and driving solutions, Georges is passionate about making improvements, whether it involves designing new products or enhancing existing ones. His approach is simple: collaborate, innovate, and create meaningful outcomes.
What can Georges help you with?
Designing innovative products and services
Facilitating workshops and brainstorming sessions
Understanding and solving business challenges
Strategic planning and goal-setting
Partnering with clients for impactful solutions
Encouraging creative approaches to problem-solving
Amelia Hosseini
Executive Partner, Senior Consultant
Amelia is committed to creating tangible change. With extensive experience in strategy development and operationalisation, she loves tackling project management and process improvement. Her passion lies in analysing complex problems and finding simple, practical solutions. Amelia also actively participates in her community and serves on Not-for-Profit Boards.
With experience in end-to-end journeys. She’s there from start to finish on projects, ensuring everything runs smoothly and on time. Amelia is adept at cultivating strong relationships and identifying opportunities for organisational growth and improvement.
What can Amelia help you with?
Strategy development
End-to-end project management
Analysing and optimising business processes
Providing governance and board-level expertise
Identifying and driving growth opportunities
Developing and guiding engagement strategies
Aligning operations with long-term strategic goals
Jules Rountree
Consultant
Jules is a natural innovator and loves jumping right into a challenge. Whether brainstorming ideas or building solutions, she's always ready to dive in and get her hands dirty to figure things out. For Jules, creating great products and services means rolling up your sleeves and working closely with the team.
With experience in problem-solving using creative solutions, Jules is always curious and constantly learning. She draws inspiration from collaborating with people from diverse backgrounds and loves that every new problem is an opportunity to learn and create something impactful.
What can Jules help you with?
Workshop facilitation for solution building
Problem-solving with creative approaches
Product, experience and service development
Cross-disciplinary teamwork and collaboration
Learning from diverse perspectives
Applying practical tools to real challenges
Mia Andrea Uy
People & Operations Manager
Mia is passionate about creating a workplace where everyone feels valued, supported, and inspired.
With a strong foundation in both business management and science, she leverages her expertise to drive positive change, solve complex problems, and foster personal and professional growth. Her strength in data analysis and research equips both internal teams and external clients with valuable insights, enabling businesses to make informed decisions and thrive. Mia builds a culture of trust, productivity, and positivity that empowers her team and boosts company success.
What can Mia help you with?
Building an inclusive and positive team culture
People management and support
Driving organisational trust and productivity
Encouraging continuous learning and development
Conducting data analysis to inform decision-making
Researching and developing best practices for HR and operations
Desiree Grant
Executive Assistant
Desiree is the person to turn to when you need something done. She is dedicated to ensuring each project runs smoothly, and the team and clients are supported and equipped with the information to succeed.
With her management experience, she excels at leading the way and making quick decisions. She values a growth mindset, fostering a space for people to develop and grow, and creating a positive and supportive work environment where everyone can collaborate to produce their best work.
What can Des help you with?
Stakeholder support and communication
Coordinating and ensuring projects are organised and on track
Providing reliable information, research and insights
Supporting change management initiatives
Coordinating communication during transitions
Helping teams adapt to organisational changes
Desiree Grant
Executive Assistant
Desiree is the person to turn to when you need something done. She is dedicated to ensuring each project runs smoothly, and the team and clients are supported and equipped with the information to succeed.
With her management experience, she excels at leading the way and making quick decisions. She values a growth mindset, fostering a space for people to develop and grow, and creating a positive and supportive work environment where everyone can collaborate to produce their best work.
What can Des help you with?
Stakeholder support and communication
Coordinating and ensuring projects are organised and on track
Providing reliable information, research and insights
Supporting change management initiatives
Coordinating communication during transitions
Helping teams adapt to organisational changes