Our Client is seeking a Senior GIS Developer to support the upgrade of business-critical GIS applications from legacy Geocortex technology to the next-generation VertiGIS platform .

The successful candidate will provide senior technical leadership in the design, development, integration, testing, implementation, and support of enterprise GIS solutions.

This role requires robust experience with Esri technologies, VertiGIS/Geocortex, Microsoft Azure, GIS infrastructure modernization, and web application development.

Key Responsibilities Lead the analysis, design, development, integration, testing, and implementation of GIS applications Upgrade existing Geocortex applications to the supported VertiGIS platform while preserving current functionality Design and develop scalable GIS web applications and supporting services Provide senior technical expertise across all phases of the Systems Development Life Cycle Translate business requirements into technical designs and specifications Develop integrations with enterprise GIS data, geoprocessing services, portals, databases, and external systems Support GIS infrastructure, networking, cloud modernization, and application deployment activities Provide technical leadership, project coordination, effort estimates, progress updates, and implementation support Troubleshoot production issues and support incident-management activities Develop and maintain installation guides, technical documentation, build books, and support procedures Mentor junior technical resources and provide guidance on development standards and best practices Ensure solutions align with GO-ITS standards, AODA requirements, security expectations, and service-delivery objectives Mandatory Requirements Strong experience with GIS software suites, preferably:



ArcGIS VertiGIS Geocortex FME Experience with Esri''s ArcGIS Enterprise technology stack, including: ArcGIS Pro SDK File Geodatabases ArcGIS Enterprise Portal ArcGIS Server ArcGIS Image Server ArcGIS Notebooks Experience developing GIS web applications using Java

Script, Type

Script, HTML5, and CSS Experience with Microsoft Azure, GIS infrastructure, networking, modernization, and maintenance Experience with Python, VBA, .NET, C++, C#, SQL, and software development kits Knowledge of service-oriented architecture, microservices, and web services Experience working with REST APIs, JSON, and AJAX Strong experience gathering requirements and translating business documentation into technical specifications Experience developing complex applications using relational and multidimensional databases Experience leading technical activities throughout the full SDLC Communication and Leadership Ability to communicate complex technical concepts to non-technical audiences Experience collaborating with business stakeholders, developers, business analysts, project managers, and technical teams Ability to resolve technical issues and build consensus on project direction Experience leading development or application-support teams Strong analytical, problem-solving, documentation, and decision-making skills Additional Assets Experience with Ontario Public Sector projects Experience within the Land and Resources I⁢ Cluster Knowledge of GO-ITS standards and government project-gating processes Knowledge of Information Management principles, policies, and practices Experience with cloud deployment, preferably Microsoft Azure Understanding of GIS spatial data, geoprocessing, analysis, and enterprise mapping solutions Experience supporting Commercial Off-the-Shelf and custom enterprise applications Knowledge of accessibility requirements, including AODA

📌 GIS Developer (Toronto)
🏢 Teckhorizon
📍 Toronto