About Us

We are a group of highly motivated individuals who have come together for work that we find challenging, enjoyable, and purposeful.  Our backgrounds include private sector, government, and non-profit work, with a focus on land use planning, design, and conservation.  Our work has contributed to land being set aside in perpetuity for conservation, the restoration of public and private properties, and the creation of sustainable land use policy.

We share a mutual love and curiosity for the natural world, site heritage, and innovative thinking.  We find a symbiotic relationship between creativity and analysis in each project that comes across our plant-filled, host-to-various-mushroom-growing-experiments desks.

Our Team

Jonathan Ogren, Principal, Ecological & Conservation Planner

Jonathan founded Siglo Group in 2006 to help clients integrate natural systems into land planning and design. He specializes in environmental assessment, regional analysis, conservation planning, mapping, and land use feasibility studies. He is a graduate of the University of Texas at Austin with an M.A. in Geography and the Environment and a B.A. in Biology. He is now on the faculty at the University of Texas School of Architecture, where he teaches graduate students to integrate geographic analysis into their research. One of his first professional jobs was with NASA. The experience changed his direction through the realization of how valuable and irreplaceable natural systems are here on this planet. Jonathan also worked at the Lady Bird Johnson Wildflower Center and Sequoia National Park and has served on the Imagine Austin Comprehensive Plan Advisory Task Force. Outside of work, Jonathan can be found running around Lady Bird Lake or hiking the Hill Country with his sons.

Haley Wagoner, Senior Ecological Designer

Haley joined Siglo Group in 2018 shortly after receiving her Master of Landscape Architecture from the University of Texas at Austin. Her background includes a B.S. in Regional Development with minors in Geographic Information Systems (GIS) and Spanish from the University of Arizona as well as a Certificate in GIS from Portland State University. Before moving to Austin for graduate school, she worked in Portland, Oregon where she was involved in restoration efforts for the endangered juvenile salmonid population passing through the Lower Columbia River Watershed. Her academic and professional experience includes GIS analysis, cartography, environmental design, planning, land survey, on the ground restoration, community engagement and environmental education. Haley loves to spend time outside getting her Vitamin D fix whether she is biking, hiking, running, skiing, or most importantly, floating a beautiful Hill Country River.

Brent Ryndak, Ecological Designer

Brent is an ecological designer whose work bridges ecology, design, data, and visual communication. He holds a Master of Landscape Architecture from The University of Texas at Austin and has a background in science education. His skills include ecological site design and restoration, GIS and spatial analysis, data visualization, and visual communication. At Siglo Group, Brent uses these tools to understand complex landscapes and translate ecological information into practical strategies. Growing up in the Midwest with a father who led the Forest Preserves of Cook County gave Brent an early connection to conservation and land stewardship. Living in ecologically distinct regions across the U.S. and exploring landscapes around the world have broadened his understanding of natural systems, cultures, and place. His interests in botany, climbing, illustration, and aquatic and marine habitats keep him exploring and learning from the natural world.

Alison McKelvy, PLA, Landscape Architect & Planner

Alison is a licensed landscape architect and planner with a decade of experience in public outreach, master planning, area planning, site design, and project management. Her work includes public parks, downtown master plans, complete streets, transportation mobility hubs, and campus planning. At Siglo Group, she brings this experience to projects that integrate ecological systems, thoughtful planning, and site design. Alison holds a Master of Landscape Architecture from the University of Oregon and has received an ASLA Honor Award in Research and First Place in the Biomimicry Global Design Challenge. She is passionate about designing spaces that serve both people and the environment while supporting healthy communities and stronger social connections. Outside of work, she enjoys baking sourdough, reading, and exploring wild places with her family on foot, by bike, or on skis.

Adam Barbe, PLA, Landscape Architect & Staff Mentor

Adam is a landscape architect and educator whose work integrates ecological restoration, sustainable design, regional identity, stormwater management, and climate resilience. At Siglo Group, he helps translate ecological restoration processes into landscape architectural standards, details, and specifications, bridging ecological intent with design and construction. As a longtime educator in The University of Texas at Austin Landscape Architecture Program, Adam has taught and mentored many current and former Siglo staff members. In addition to supporting Siglo, Adam leads Collaborative Workshop (colab.design), where his practice focuses on residential, ranch, and mixed-use projects. An Alabama native and longtime Austin resident, he brings a strong understanding of regional landscapes and culture to his work.