Nathan Duggins

Skills and Abilities

GIS Analysis & Spatial Methods

• Executed advanced spatial analysis workflows in ArcGIS Pro and QGIS including multi-criteria decision analysis, overlay operations, and proximity modeling for environmental suitability assessments
• Developed hydrological modeling workflows including watershed delineation, flow accumulation, and stream network extraction from high-resolution DEMs
• Applied terrain analysis techniques including slope, aspect, and hillshade calculations to support ecological habitat modeling and infrastructure planning
• Executed viewshed analysis and line-of-sight modeling for telecommunications tower placement and visual impact assessments
• Conducted cost-distance analysis and least-cost path routing to identify optimal corridor locations while minimizing environmental impact
• Executed coordinate system transformations and projection management ensuring geometric accuracy across multi-source datasets spanning different spatial reference systems
• Developed raster analysis workflows using map algebra operations for land suitability modeling and environmental change detection
• Conducted time-series spatial analysis tracking temporal changes in land use patterns and environmental conditions
• Applied vector data analysis techniques including spatial joins, relationship classes, and geometric calculations for feature attribution and spatial relationship assessment
• Performed hot spot analysis and spatial autocorrelation using Moran's I and Geary's C statistics to identify statistically significant clustering patterns in species distribution data
• Conducted geostatistical analysis and spatial interpolation using Kriging and IDW methods to predict continuous surface values from discrete point measurements

Remote Sensing & Image Processing

• Processed Sentinel-1 SAR imagery in Google Earth Engine implementing polarization band math algorithms (VH²+VV², VH²×VV²) with global normalization for automated, cloud-penetrating flood extent detection.
• Executed complete supervised machine learning classification workflows in ArcGIS Pro mapping intertidal species distribution for National Park Service including mussel beds, algae mats, and substrate types
• Extracted spectral signatures and applied band math for vegetation indices (NDVI, NDRE, EVI, SAVI) supporting ecological research, plant health analysis, and agricultural monitoring applications
• Performed radiometric calibration and atmospheric correction of multispectral imagery producing calibrated reflectance products suitable for quantitative spectral analysis
• Implemented adaptive speckle filtering using 50m circular convolution kernels to suppress SAR noise while preserving edge integrity and small-scale hydrological features
• Performed georectification and orthorectification of satellite and aerial imagery achieving sub-pixel geometric accuracy through ground control point integration
• Conducted accuracy assessments including confusion matrix analyses, producer's/user's accuracy calculations, and ground truth validation for classified products
• Executed pan-sharpening and image fusion workflows combining high spatial resolution panchromatic and lower resolution multispectral data
• Developed automated image classification algorithms scalable across multiple watersheds without site-specific retraining or parameter tuning

Photogrammetry & 3D Processing

• Executed complete photogrammetry workflows in Agisoft Metashape processing thousands of images to produce radiometrically calibrated orthomosaics and digital surface models (DSMs) with 6cm spatial resolution
• Performed point cloud classification and segmentation using machine learning algorithms extracting terrain, vegetation, and infrastructure features from dense point clouds
• Generated high-accuracy digital elevation models (DEMs) and digital surface models (DSMs) using cloth simulation filtering (CSF) algorithms in cloudCompare for flood assessment and hydrological modeling
• Conducted dense point cloud generation and filtering producing millions of 3D points per project for detailed topographic reconstruction
• Executed ground point classification and bare earth extraction separating terrain from above-ground features
• Conducted photogrammetric accuracy assessment comparing ground control point coordinates with model-derived values
• Applied point cloud noise filtering and outlier removal techniques improving data quality for subsequent classification
• Generated cross-sections and profile analyses from point cloud data supporting infrastructure design and monitoring
• Developed post-processing workflows optimizing computational efficiency while maintaining geometric accuracy

Programming & Automation

• Developed Python scripts using geospatial and database libraries including ArcPy, GDAL, GeoPandas, and Pyproj automating complex spatial analysis workflows
• Built custom automation tools streamlining repetitive tasks across multi-analyst teams, reducing processing time for teamwide workflows by up to 85%
• Created ArcGIS Python Toolboxes with custom geoprocessing tools featuring user-friendly interfaces and comprehensive error handling
• Developed Google Earth Engine JavaScript applications for large-scale geospatial analysis leveraging cloud-based parallel processing capabilities
• Implemented version control workflows using Git and GitHub for collaborative code development and documentation
• Developed automated reporting tools generating standardized map products, statistical summaries, and quality control documentation
• Implemented performance optimization techniques including spatial indexing, query optimization, and efficient data structure selection
• Developed automated map production workflows generating publication-ready cartographic products with consistent symbology and layout
• Built Model Builder workflows in ArcGIS for complex multi-step geoprocessing operations accessible to non-programmer analysts
• Developed reproducible analysis workflows combining raster algebra, vector operations, and statistical modeling for ecological research applications

UAV Operations & Field Data Collection

• Conducted precision UAV surveys across multiple environments achieving centimeter-level spatial accuracy through integrated RTK GPS and ground control point methodologies
• Managed complete UAV workflow including mission planning, preflight planning around environmental constraints, field operations, and post-processing deliverable production
• Calibrated and synchronized multispectral sensors across multiple UAV platforms executing coordinated simultaneous flight missions for enhanced spatial coverage and data redundancy
• Designed complex mission plans optimizing flight parameters (altitude, overlap, camera angles) for diverse terrain conditions and sensor requirements
• Conducted preflight site assessments evaluating airspace restrictions, terrain obstacles, meteorological conditions, and safety hazards
• Maintained FAA Part 107 compliance including airspace authorizations, LAANC approvals, waiver applications, and operational recordkeeping
• Achieved 1,000+ flight hours with zero safety incidents demonstrating operational excellence and comprehensive risk management
• Executed multispectral UAV surveys during optimal environmental windows (lowest tides, peak vegetation, minimal cloud cover) maximizing data quality
• Performed UAV sensor payload configuration and calibration including multispectral cameras, thermal imagers, and precision GPS equipment
• Provided field training to research teams on GPS survey techniques, ground control point collection procedures, and data quality assurance
• Maintained detailed flight logs, safety documentation, and operational records meeting regulatory requirements and client specifications

Technical Communication & Collaboration

• Provided technical consultation to researchers and agencies on sensor selection, mission planning, and data processing methodologies
• Translated complex geospatial concepts and methodologies for non-technical stakeholders and resource managers through clear visualizations and plain-language explanations
• Delivered stakeholder presentations and technical briefings effectively communicating analytical findings and project outcomes
• Collaborated with resource specialists, ecologists, and scientists ensuring geospatial products meet specific research needs and scientific standards
• Conducted client consultations and requirements gathering translating business needs into technical specifications
• Coordinated remote team initiatives utilizing collaboration platforms fostering knowledge sharing across distributed workforce
• Mentored junior analysts on imagery interpretation, classification techniques, quality control procedures, and production standards
• Participated in cross-functional team collaboration coordinating between GIS analysts, software developers, and subject matter experts
• Presented geospatial analysis findings through visual presentations combining maps, charts, and narrative explanations

Database & Data Management

• Designed and implemented geodatabase schemas including feature classes, relationship classes, domains, and subtypes supporting complex spatial data models
• Executed spatial data quality assessment and accuracy validation against ground truth data and authoritative reference sources
• Performed topology validation and error correction identifying and resolving geometric inconsistencies including gaps, overlaps, and dangles
• Conducted attribute accuracy assessment and data validation implementing business logic rules and domain constraints
• Executed data migration and format conversion between multiple geodatabase formats (file geodatabase, enterprise geodatabase, shapefiles, GeoJSON)
• Implemented database performance optimization including spatial indexing, query optimization, and table partitioning strategies
• Administered multi-user enterprise geodatabases managing permissions, versioning workflows, and conflict resolution
• Tracked quality metrics and production statistics supporting performance monitoring and continuous process improvement
• Applied standardized QA checklists ensuring consistent evaluation criteria across all product types and data sources

Employment History

GIS Quality Assurance – CACI International Inc.

I perform quality assurance on geospatial datasets for federal intelligence clients, ensuring satellite imagery products meet accuracy standards. I develop Python automation tools that streamline team workflows and mentor junior analysts on imagery interpretation and quality control procedures.

• Execute quality control procedures on digitized geospatial features including buildings, roads, infrastructure, and terrain annotations for federal intelligence agencies
• Develop Python automation scripts streamlining digitization workflows, reducing manual processing time and improving production efficiency across multi-analyst teams
• Implement automated quality control tools to identify topology errors, attribute inconsistencies, and geometric anomalies in large-scale geospatial datasets
• Mentor junior imagery analysts on satellite imagery interpretation techniques, quality control procedures, and intelligence community production standards
• Lead remote team coordination initiatives utilizing collaboration platforms fostering knowledge sharing across distributed workforce
• Verify attribute data consistency and compliance with data dictionary requirements across multiple feature classes
• Track quality metrics and production statistics supporting performance monitoring and project reporting
• Execute rework and correction tasks on products returned from client review, incorporating feedback and ensuring revised deliverables meet updated specifications

Owner/Pilot – Levitate Drones

Founded and operate a specialized UAV services company providing high-precision geospatial data products to federal agencies and research organizations. Build client relationships, execute field operations, and deliver scientific-grade mapping products for environmental research applications.

• Provide mapping services to National Park Service, university research programs, and municipal agencies for ecological monitoring and post-disaster assessment projects
• Planned and executed UAV missions across diverse environments including coastal zones, riparian corridors, and urban-wildland interfaces
• Produced orthomosaics, elevation models, and multispectral imagery products meeting scientific research standards for peer-reviewed studies
• Processed thousands of aerial images into georeferenced data products using Agisoft Metashape and Pix4D photogrammetry software
• Generated terrain models and vegetation analysis products from point cloud data supporting habitat assessment and hydrological studies
• Advised clients on project scoping, sensor capabilities, accuracy requirements, and deliverable formats during consultation phase
• Maintained perfect safety record across 1,000+ flight hours while completing 100% of contracted projects on schedule
• Coordinated field operations around environmental constraints including tidal cycles, weather windows, and wildlife considerations
• Secured airspace authorizations and maintained regulatory compliance for operations in controlled airspace and special use areas
• Documented project methodologies and accuracy results in technical reports for research publications and agency archives
• Provided GIS-compatible deliverables integrated with client databases for ongoing monitoring and comparative analysis
• Communicated technical workflows and data quality considerations to researchers from ecology, geology, and engineering disciplines

Store Manager – FedEx Office

Led retail operations for a high-volume location, balancing customer service delivery with team development and business performance goals. Developed staff capabilities while maintaining operational standards and service quality metrics.

• Managed daily operations including staffing allocation, workflow scheduling, and performance objectives ensuring consistent service delivery
• Recruited, interviewed, and hired team members evaluating candidates for technical aptitude, customer service skills, and cultural fit
• Developed and delivered comprehensive training programs for new hires covering technical systems, customer service protocols, and operational procedures
• Coached team members on performance improvement through regular feedback sessions, skill assessments, and professional development planning
• Monitored key performance indicators (KPIs) tracking productivity metrics, quality standards, and operational efficiency
• Managed budgets, inventory control, and resource allocation optimizing cost efficiency while maintaining service quality standards
• Resolved customer complaints and escalated issues applying problem-solving frameworks and conflict resolution techniques
• Ensured compliance with company policies, safety regulations, and operational procedures through regular audits and staff training
• Analyzed operational data identifying performance trends and implementing corrective actions to improve outcomes

Education

Geospatial Science (GIS), Bachelor of Applied Science

Front Range Community College – Boulder, Colorado

Summa Cum Laude – Focus on GIS and Remote Sensing

Certifications

• Part 107 UAV Pilot
• Geographic Information Systems
• Natural Resources GIS
• Foundations of GIS