Profile

Experienced in Cartography and Software Development. Helping individuals and organizations with practical solutions.

My work combines cartography and digital development to solve real problems for people and businesses.

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Jotham Ayanga

Natural Resource Scientist, DRSRS

Technical Skills

GIS

  • ArcGIS
  • QGIS
  • GRASS GIS
  • SAGA GIS
  • MapInfo
  • PostGIS
  • GeoServer
  • MapServer
  • Spatial Analysis
  • Network Analysis
  • Geostatistical Analysis
  • Spatial Statistics
  • Suitability Analysis
  • Site Selection
  • Terrain Analysis
  • Hydrological Analysis
  • Watershed Delineation
  • Raster Analysis
  • Vector Analysis
  • Overlay Analysis
  • Buffer Analysis
  • Interpolation
  • Spatial Modeling
  • Cartography
  • Map Design
  • Map Layouts
  • Symbology
  • Coordinate Systems
  • Map Projections
  • Georeferencing
  • Digitizing
  • Topology
  • Geocoding
  • Spatial Databases
  • GPS Data Processing
  • Field Data Collection
  • Survey123
  • Field Maps
  • Collector
  • Spatial SQL
  • Metadata Management

Software Development

  • HTML5
  • CSS3
  • JavaScript
  • Python
  • Node.js
  • Express.js
  • React
  • Next.js
  • Vite
  • REST APIs
  • JSON
  • AJAX
  • Git
  • GitHub Actions
  • Supabase
  • Firebase
  • PostgreSQL
  • MySQL
  • SQLite
  • MongoDB
  • Authentication
  • JWT
  • Responsive Design
  • Progressive Web Apps
  • SEO
  • Performance Optimization
  • Accessibility
  • Web Hosting
  • Cloudflare
  • Netlify
  • Vercel
  • Linux
  • Nginx
  • Apache
  • Docker Basics
  • API Integration
  • Leaflet.js
  • MapLibre GL JS
  • OpenLayers
  • Mapbox GL JS
  • Chart.js
  • OpenAI API
  • Automation Scripts
  • Web Security
  • Responsive UI Design
  • Debugging
  • Cross-Browser Compatibility

Remote Sensing

  • Google Earth Engine
  • ERDAS Imagine
  • ENVI
  • SNAP
  • Sentinel Hub
  • Satellite Image Processing
  • Orthomosaic Generation
  • Image Classification
  • Supervised Classification
  • Unsupervised Classification
  • Object-Based Image Analysis
  • Change Detection
  • NDVI
  • NDWI
  • NDBI
  • EVI
  • Vegetation Monitoring
  • Land Cover Mapping
  • Land Use Mapping
  • Image Enhancement
  • Radiometric Correction
  • Atmospheric Correction
  • Geometric Correction
  • Cloud Masking
  • DEM Processing
  • LiDAR Basics
  • Flood Mapping
  • Drought Monitoring
  • Hydrological Modeling
  • Environmental Monitoring
  • Natural Resource Mapping
  • Disaster Risk Mapping

Land Surveying

  • GNSS Surveying
  • Traverse Survey
  • Control Surveys
  • Cadastral Survey
  • Topographic Survey
  • Levelling
  • Setting Out
  • Boundary Survey
  • Subdivision Survey
  • Beacon Recovery
  • Coordinate Computations
  • Area Computation
  • Survey Adjustments
  • Traverse Adjustment
  • Field Reconnaissance
  • Civil 3D
  • AutoCAD
  • Coordinate Transformation
  • Contour Generation
  • Stakeout

Certifications

Google Security Operations (SIEM)

Google

Transformer Models and BERT

Google

Encoder-Decoder Architecture

Google

Google Cloud Computing

Google

Responsible AI

Google

Generative AI

Google

Attention Mechanism

Google

Large Language Models

Google

December 2025

BA Geographic Information Systems

Moi University

Referees

Dr. Salee DamarisMoi University
+254 725 540 740
Jotham AyangaDRSRS, Nairobi
+254 704 537 737
Maina MwangiHomeland Surveyors
+254 729 247 505
Peterson MachariaGeolink Surveyors
+254 723 335 815