Our mission is to connect data and information with people and decisions.

We are an agile and highly collaborative team of technical experts, software developers and designers. Our multidisciplinary thinking allows us to marry complex analytics with stunning design and high usability to create high-impact solutions for our clients.

Dr Petra Muellner headshot

Dr Petra Muellner

Dr. med. vet., MSc (Public Health Epi), PhD, Dipl ECVPH, MANZCVS (Epidemiology)

Director (Science & Data)


In an increasingly complex world Petra’s work drives to connect data and information with people by augmenting science and data analysis with user experience design, new media and information technologies. Her ability to amalgamate her technical background in epidemiology and risk assessment with a strong sense of pragmatism and practicality makes her a skilled problem solver.

Petra engages with and injects her highly contagious passion and tenacity into our projects to help our clients get great outputs and turn their ideas into reality.

Dr Uli Muellner headshot

Dr Uli Muellner

BSc, PGD (Computer Sciences), PhD

Director (Learning & IT)

+64 (0)27 292 2296

Uli's broad experience around anything software, training and media coupled with a keen sense for quality execution makes him one-of-a-kind in the information technology universe.

Uli is the engine of our team. He helps our clients navigate the technology jungle while overseeing our design and production pipelines. He also ensures that our projects run like clockwork and our outputs are both precise and beautiful.

Shanna Tervoort-McLeod headshot

Shanna Tervoort-McLeod

BDes (Hons)



A native Wellingtonian, Shanna is our designer extraordinaire who is responsible for the stunning interface designs that we are known for. With a keen eye for detail and a quick mind she effortlessly translates technical requirements into practical design. She is a breeze to work with and goes above and beyond to get things right for our clients.

Dr Liang Yang headshot

Dr Liang Yang

BSc (Mechatronic), MSc, PhD (Computer Science)

Senior Software Engineer


Liang is our computer whiz who makes the magic happen in our data science projects and interactive dashboards. He has broad experience in both front and backend software development and is familiar with most common frameworks, from JavaScript, HTML, CSS through to R, R Shiny, Python, Java, C, C# and .NET, you name it! With a PhD in Cloud Computing he also brings valuable expertise to our clients’ server infrastructure setup. If that weren’t enough already, he has a passion for big data analytics, machine learning and all things complex and challenging.

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Anna Poulin

BA (Design)



Anna brings her sharp designer's eye and organisational skills to Epi-interactive. She drives our visual communications, including everything from user experience, infographics, iconography to polishing reports and other outputs. Anna holds a Bachelor of Arts in Graphic Design and prior to Epi-interactive worked as a designer in Vancouver, BC.

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Crystal Johnston

BE (Software Engineering, Hons)

Full-Stack Developer


Crystal is our problem solver and passionate about building fit-for-purpose software for our clients. Experienced in web and data visualisation technologies such as React, Angular, JavaScript and Python, she builds interactive dashboards and tools that are excellent in their execution and highly customised to user preferences.

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Nick Snellgrove

BE (Software Engineering, Hons)

Full-Stack Developer


Skilled beyond his young years Nick can be found on the dean’s list for academic achievements as well as exploring emerging trends in the technology field such virtual/augmented realities. Quick to learn and a hard worker he makes our data visualisations shine and more. He is of course fluent in lots of different programming languages like Python, C++, Java, JavaScript, React Native and Ionic for mobile development to name a few.

Ryan van den Eykel  headshot

Ryan van den Eykel

BSc (Computer Science)

Full-Stack Developer


Ryan is our guardian of good process — he steps up our game through his passion for automation, integration and optimisation. He is a versatile developer with wide ranging experience including web, full stack, devOps/secOps, database management to network and server infrastructure, covering both cloud and non-cloud solutions. His passion is finding simple solutions to complex problems and building robust, future proof code.

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Mohaneesh Jeelall

BSc (Computer Science), MSc (Information Technology)

Full-Stack Developer


Mohaneesh has swapped his home, the island paradise of Mauritius, to support our expertise in data science and analytics. Equipped with postgraduate training in IT, he is helping us push the boundaries in digital epidemiology and complex methods such as machine learning and text mining. As a Full-Stack Developer he is also well versed in a range of programming languages such as JAVA, C# and Python, as well as front-end technologies like JavaScript.

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Dr Christina Ahlstrom

MSc, PhD

Consultant Epidemiologist & Data Analyst


Christina has been a part of the team since completing her PostDoc with us and now contributes to our projects from the wilderness and beauty of Alaska. A master of genetic data analysis she supports our epidemiology and data projects with fine analytical skills, an eye for what matters and a keen interest in quality science.

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Bronwyn Tims

Office Manager


Bronwyn supports the Epi-interactive team to ensure the smooth running of the office, where her experience in office systems ensures administration, inventory and office practices are effective and efficient. If you have any administration function or organisational query she’ll happily respond, and if she doesn’t know, she’ll find out.