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Job Id : 14724

Jobtitle : Sr GIS Developer

Location : Washington , Washington DC

Company Name : CorTech

Industry : Information Technology

Salary : $49 - $51  PER HOUR

Job type : Contractor

Posted on: 2020-06-30

Required Skills : PostgreSQL, SQL Server, Oracle, Vertica. Pentaho, ETL, PostGIS, Python, Shell Scripting

Benefits : No benefits are available

Job Description:The Senior GIS Developer leads the design, development and maintenance of GIS databases and technology platforms. Writes complex SQL scripts to extract data from various databases and systems to make data available for enterprise-wide usage for web maps, analytics and reporting. Maintains GIS applications, databases, and environments. Creates and enhances GIS web applications, spatial data and layers using multiple developing and scripting languages. The results provide ongoing support to decision-makers, the FCC, Congress, and other interested parties.

Essential Duties:

  • Serve as the technical lead in the development of GIS applications, maintaining environments, usability improvement, and integrations.
  • Development, ongoing maintenance, as well as the design, of enterprise geocoding data repository and geocoding API services. Apply geodatabase principles to ensure that GIS databases are optimized for maximum performance and is designed according to best GIS industry standards.
  • Develops complex ETL (extract, transform and load) SQL scripts from various databases and systems to make data available for web maps, analytics and reporting.
  • Analyzes requests for new applications, programs, and modifications to existing GIS applications; documents and evaluates processes and functionality requirements; identifies gaps and recommends improvements to system functionality and/or procedures.
  • Develops and enhances custom GIS web applications, scripts, spatial data and layers using multiple developing languages and scripting languages.
  • Monitors utilization of GIS applications to plan for current and future needs. Identify areas for improvement related to GIS architecture, design, performance optimization, development process, workflows, governance, and tools/technologies.
  • Troubleshoot reported problems pertaining to database and applications environments, working closely with other IT members, especially DBAs, Systems Analysts and Systems Engineers, identifying the cause and designing or developing an approach for resolution.
  • Train end users on GIS technologies related to geocoding and web map application use.

Required Experience:

  • Knowledge of Relational Databases (PostgreSQL, SQL Server, Oracle) - 7 years
  • Knowledge of Columnar Databases or columnar storage (such as Vertica) - 5 years
  • SQL Queries - 7 years
  • Pentaho PDI ETL - 7 years
  • PostGIS, Python, Shell scripting - 5 years
  • Geocoding, geo processing, creation of shape files - 7 years
  • CSS, HTML, JavaScript, Leaflet, Carto - 5 years
  • GIS software such as ArcGIS, QGIS - 5 years
  • Experience in Agile development is a plus
  • Ability to use Jira, Confluence, Microsoft Visio
  • Ability to produce artifacts
  • Data flow and prototyping experience
  • Developing and/or creating methods, procedures, training, etc.


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