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 (IT & Information Design)

+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.

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.

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.

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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.

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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.

Donna Joseph headshot

Donna Joseph

BC (Digital Media)

Design and Marketing Assistant


Both a designer and digital marketer, Donna loves all things media. Backed with a Bachelor of Communication Studies from Auckland University of Technology, Donna loves using different digital medias including video, graphic design, and animation. She is interested in how our media landscape is constantly changing and is always up-to-date on the latest trends.

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Ian Montgomery

BA (English)

Operations Manager


Ian has years of management experience across a diverse range of industries with the bonus of being a Full Stack Developer familiar with a variety of technologies. He is passionate about using technology to address complex problems and working in the ethical regenerative business space. In his spare time, he enjoys following baseball, the sport for data nerds.


RStudio Full Service Certified Partner

As an RStudio Full Service Certified Partner we offer training, implementation, management and development services of RStudio professional products.



AWS Certified Solutions Architect

We can support you with AWS cloud hosting and data solutions to support your dashboards and beyond.


New Zealand Biosecurity Awards

We were honoured to be a Finalist in the 2020 New Zealand Biosecurity Awards for our contribution to strengthening biosecurity and One Health frameworks.


Science NZ Supreme Award

As part of the ESR team, we received the Supreme Award at the Science New Zealand Awards 2020 for our work in New Zealand's COVID-19 response.



Adjunct academic position at Massey University, New Zealand (Dr. Petra Muellner).


One Health Aotearoa (OHA) Investigator. OHA is an alliance of New Zealand’s leading infectious diseases researchers committed to working together to address important health hazards in New Zealand, and beyond (Dr. Petra Muellner).


Diplomate of the the European College of Veterinary Public Health (ECVPH). Member and past Head Examiner of the Epidemiology Chapter of the Australian and New Zealand College of Veterinary Scientists (ANZCVS) (Dr. Petra Muellner).


As international Consultants we support on demand activities of the Food and Agricultural Organisation of the United Nations (FAO); a specialized agency of the United Nations that leads international efforts to defeat hunger and improve nutrition and food security. (Dr. Petra Muellner / Dr. Ulrich Muellner).