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Senior Technology Specialist / Developer to support a major GIS modernization initiative, migrating and rebuilding business-critical applications from Esri ArcGIS Online to ArcGIS Enterprise 11.5

Company: S.i. Systems

Location: Toronto, London

Posted: June 18, 2026

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Position Details

Senior Technology Specialist / Developer (GIS / ArcGIS Enterprise)

Our public sector client is seeking a Senior Technology Specialist / Developer to support a major GIS modernization initiative, migrating and rebuilding business-critical applications from Esri ArcGIS Online to ArcGIS Enterprise 11.5. This role will play a key part in decommissioning the existing AWS GIS platform while developing modern web and mobile GIS solutions integrated with enterprise systems across the organization.

Contract: 12 months (with possible 12-month extension)

Location: Brampton, ON (Hybrid – minimum 2 days onsite per week)

Start Date: August

Work Environment

  • Hybrid work model with a minimum of 2 onsite days per week.
  • 35-hour work week (7 hours/day).
  • Travel between client's locations may occasionally be required.
  • Initial contract through August with a potential 12-month extens...