Jua van Zyl

Earth scientist · GIS & remote sensing · Operations leader

Jua van Zyl

For almost twenty years I turned satellite images and weather data into decisions for South Africa's farmers, government departments and agricultural businesses. Today I run the daily operations of a law firm north of Boston, and I still map the weather for the love of it.

  • 18 yearsin GIS and remote sensing, 2001 to 2019
  • Nationalsystems for drought, fire warning and crop monitoring
  • 6scientific papers and conference presentations
  • NotaryCommissioned Massachusetts Notary Public, 2026
Portrait of Jua van Zyl

My story

I have always been a geographer at heart. I was the top geography student in my school in Pretoria, and I went on to study Geo-Informatics at the University of Pretoria, on a performance bursary, tutoring second-year geography along the way.

My career began in agricultural mapping and grew into national earth observation. At the Agricultural Research Council's Institute for Soil, Climate and Water I led the national CRID project for drought and vegetation monitoring, working with MODIS and AVHRR satellite imagery to track drought, land degradation and climate variability across South Africa. I co-authored scientific papers, presented my work at IGARSS in Anchorage, Alaska, and was a delegate at the GEO Ministerial Summit in Cape Town.

In 2011 I joined Manstrat Agricultural Intelligence Solutions as a Remote Sensing Specialist, and within just over two years I was leading its GIS Division. My team built national systems for fire warnings, grazing capacity and crop monitoring, grew the company's infrastructure mapping from 20 to more than 50 datasets, and brought NOAA weather data into the agricultural forecasts that farmers and government relied on every week.

When Manstrat closed in early 2019, I chose to close that chapter too. I loved the work, but staying "current" in the profession had become a treadmill of professional-body registrations, compulsory training points and fees, and it was crowding out the work itself. I moved to the United States, through the long years of pandemic travel restrictions, and started again from the ground up.

Starting over taught me a great deal about people. I worked on a shop floor, a school playground and a grocery floor, then turned a brand-new business centre into a fully working one. Since 2026 I have been a Firm Administrator: I run a law firm's daily operations, notarize documents and witness Will and Trust signings, and I designed and built the firm's website and the internal applications that run its work.

The maps never really left me. In my own time I rebuilt the kind of weather and agricultural products I used to make, from free global weather models, for South Africa and for home, north of Boston. They will live on this site.

Experience

Two countries, two careers, one habit: making complicated information useful to the people who need it.

United States

2019 to today
  • Firm Administrator

    2026 to present

    A law firm north of Boston

    • Direct daily operations, performance reporting and key performance indicator tracking for the firm's leadership.
    • As a commissioned Massachusetts Notary Public, notarize documents or serve as an authorized witness at Will and Trust signings across all of the firm's offices.
    • Designed, built and maintain the firm's public website: 124 pages, including 72 plain-language legal guides and 22 interactive client tools, built to the Web Content Accessibility Guidelines (WCAG) 2.2, level AA.
    • Built the firm's internal applications: a workflow and procedure system covering 43 practice areas and more than 750 documented steps, a fee-agreement document builder, a signing scheduler, a 14-tool paralegal calculator suite, an hours dashboard, a budget tracker and a searchable document library.
    • Own the marketing plan, content calendar, local search presence and technical search engine optimization; administer Microsoft 365 and lead the use of artificial intelligence tools in the firm.
  • Community Associate

    2025 to 2026

    International Workplace Group (Regus)

    • Took a newly launched business centre from partial functionality to full operation.
    • Primary contact for more than 20 member companies; handled billing, retainers and disputes.
    • Coordinated vendors, furniture installation and IT setup, and solved facility problems with contractors and regional managers.
  • Settling in

    2019 to 2024

    Relocation, independent projects and first U.S. jobs

    • Managed a multi-year international relocation through the pandemic's travel restrictions.
    • Provided freelance GIS services to SMC Synergy (Spatial Management Consulting) in 2019.
    • Worked in retail, grocery fulfilment (85 items an hour, above target) and as a school lunch and recess monitor, building my U.S. work history from the ground up.

South Africa

2001 to 2019
  • GIS Division Manager

    2014 to 2019

    Manstrat Agricultural Intelligence Solutions, Pretoria

    • Joined as Remote Sensing Specialist in November 2011; promoted to lead the GIS Division in February 2014.
    • Led a multidisciplinary team delivering GIS tools and datasets to national government and corporate clients.
    • Designed national systems for fire warnings, grazing capacity and crop monitoring.
    • Grew the infrastructure mapping from 20 to more than 50 datasets.
    • Brought NOAA data into the company's short- and long-term agricultural forecasts.
    • Trained government clients, managed stakeholder relationships and wrote technical and client content.
  • Remote Sensing Specialist

    2011 to 2014

    Manstrat Agricultural Intelligence Solutions, Pretoria

    • Satellite image processing and analysis for agricultural intelligence products.
  • Research Technician: Remote Sensing

    2003 to 2011

    Agricultural Research Council, Institute for Soil, Climate and Water

    • Led the national CRID project for drought and vegetation monitoring.
    • Built GIS tools for land degradation, climate variability and resource planning.
    • Analysed MODIS, AVHRR and vegetation index (NDVI) time series.
    • Collaborated internationally and co-authored scientific publications.
  • GIS Technician

    2001 to 2003

    Agri-Geo Analysis, Pretoria

    • Processed satellite and aerial imagery for crop monitoring, land cover classification and land use assessments.

    Before that, a short contract as Data Assistant at the South African Grain Information Service (2001).

In their words

From letters of recommendation written by the people I worked for in South Africa.

She soon proved herself as an invaluable member of our company. She was well respected by her staff and the GIS team was a well motivated and productive unit of the company.
Jantus van der LindenDirector, Manstrat Agricultural Intelligence Solutions
She required little supervision and always completed projects on time and within specifications.
Dirk PretoriusManager, SMC Synergy; my GIS manager at Manstrat, and a colleague since the Agricultural Research Council

Education and training

B.Sc. Geo-Informatics

University of Pretoria, 2000

  • Performance Bursary, 1998
  • Geography II tutor, 1999

School: Silverton High School, Pretoria (Matric 1997): top geography student, academic merit awards and honours.

Certifications and training

  • 2026Massachusetts Notary Public, commissioned through 2033
  • 2026Massachusetts Conflict of Interest Law training (also 2024)
  • 2026Claude 101, Anthropic
  • 2015Leadership and Mentoring; Junior Management Training (SEESA)
  • 2007Advanced Remote Sensing (GIMS)
  • 2005MODIS and AIRS Applications (ARC and NASA)
  • 2004ArcGIS Spatial Analyst (GIMS)

Research

Selected publications

  • Using Satellite Imagery and Rainfall Data to Track Climate Variability in South Africa
  • Assessing the Use of Coarse Resolution Imagery for Prioritizing Drought-Prone Areas
  • Assessing the Effects of Human-Induced Land Degradation in Northern South Africa
  • Dynamics of MODIS Time Series for Ecological Applications in Southern Africa (IGARSS)
  • Relationship between Herbaceous Biomass and AVHRR NDVI in Kruger National Park
  • Observations on Environmental Change in South Africa

Conferences

  • 2007GEO Ministerial Summit, Cape Town (delegate)
  • 2007African Leadership Conference on Space Science and Technology, Pretoria
  • 2006Combined Congress, Durban
  • 2005International GIS Week and Technical Symposium, Polokwane (presenter)
  • 2004IGARSS, Anchorage, Alaska (presenter)
  • 2003Global Change and Regional Sustainability, Cape Town (presenter)
  • 2003SAFNET Workshop, Kruger National Park; VII International Rangeland Congress, Durban

Skills

Earth observation and data

  • GIS
  • Remote sensing
  • Drought and vegetation monitoring
  • Weather and climate data
  • Spatial analysis
  • ArcGIS
  • QGIS
  • ERDAS Imagine
  • MODIS, AVHRR, NDVI
  • ECMWF and NOAA models
  • Technical writing

Operations and people

  • Operations management
  • Team leadership
  • Budgeting and planning
  • Process design
  • Client service
  • Vendor coordination
  • Public speaking
  • Training
  • Notary services

Building things

  • Accessible websites (WCAG 2.2 AA)
  • Search engine optimization
  • Workflow automation
  • AI-assisted development
  • Microsoft 365 and SharePoint
  • Data dashboards

Languages and perspective

  • English
  • Afrikaans
  • Cross-cultural communication
  • Plain-language writing

Writing

Author

Two books, both republished in revised editions in 2026: Metamorphosis: Surviving the Architecture of Control, a memoir, and The Work of Hope.

Read and listen to them in Jua's Musings

Journalism

Freelance writer for News24 and Women24 (2013 to 2017): personal and advocacy articles on gender identity, transition and LGBTI visibility in South Africa.