Senior Software Engineer C#/.NET

Streamline Technologies

$100K — $130K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 8+ years of experience in software development, particularly in graphics programming and Windows desktop applications.
  • Strong proficiency in C# / .NET (Framework 4.8+, WinForms).
  • Experience with DirectX, OpenGL, or a comparable graphics API for custom 2D/3D rendering.
  • Strong background in geometry and linear algebra applied to graphics or GIS aspects.
  • Experience with Git, CI/CD pipelines, and modern software engineering best practices.
  • Ability to articulate complex technical concepts to both technical and non-technical stakeholders.
  • Experience with GDAL, SlimDX, or SharpDX.

Responsibilities

  • Own and enhance the geospatial rendering engine for visualizing complex data on the platform.
  • Build and maintain drawing and editing tools for hydraulic/hydrologic model geometry.
  • Implement and optimize advanced 2D/3D rendering pipelines using DirectX.
  • Develop algorithms for computational geometry and related spatial operations.
  • Integrate various geospatial data formats and coordinate systems within the application.
  • Collaborate with subject-matter experts to improve the existing codebase.
  • Participate in code reviews, unit testing, and the continuous improvement of engineering practices.

Benefits

  • Comprehensive medical, dental, and vision coverage.
  • Wide range of additional perks supporting well-being and career growth.
  • Close-knit atmosphere of a small company with the backing of a larger family of companies.
Full Job Description
Overview

We have an opening for a Senior Software Engineer specializing in C#/.NET, with 8+ years of experience graphics programming, and Windows desktop application development. The successful candidate will be part of our Software Development Team and assist in maintaining, enhancing, and developcreating new features for our desktop application (StormWiseTM StormWiseTM), working closely with our software engineers and subject-matter experts. The candidate's initial primary focus will be learning and supporting the architecture of the existing codebase. Ultimately, the candidate will be tasked with optimizing the existing codebase and developing new features and enhancements.

#LI-onsite

Responsibilities

  • Own and evolve the geospatial rendering engine, the cartographic display layer that visualizes aerial imagery, thematic polygon layers, terrain surfaces, and drainage networks within our desktop platform
  • Build, maintain, and enhance the drawing and editing tools that engineers use to create, modify, and inspect hydraulic/hydrologic model geometry directly on the map
  • Implement and optimize 2D/3D rendering pipelines using DirectX (raster tiles, vector overlays, TINs, contour surfaces)
  • Develop computational geometry algorithms for spatial operations such as polygon intersection, triangulation, coordinate transformations, and surface interpolation
  • Integrate geospatial data formats and coordinate systems (shapefiles, geodatabases, raster formats)
  • Collaborate directly with subject-matter experts to optimize the existing codebase and develop new features and enhancements.
  • Participate in code reviews, technical documentation, unit testing, and continuous improvement of engineering practices
  • Mentor junior staff and assist with the technical direction of our platform


Qualifications

Required Skills
  • Strong proficiency in C# / .NET development (Framework 4.8+, WinForms)
  • Experience with DirectX, OpenGL, or a comparable graphics API for custom 2D/3D rendering (not just consuming a charting library)
  • Strong background in vector and raster display technologies, - built or substantially extended a mapping, GIS/CAD, or geospatial visualization layer
  • Strong background in geometry and linear algebra as applied to graphics or GIS (projections, transformations, spatial indexing)
  • Experience with programming vector and raster display technologies
  • Experience with Git, branching strategies, CI/CD pipelines, and modern software engineering best practices
  • Ability to communicate complex technical concepts clearly to cross-functional and non-technical stakeholders
  • Experience with GDAL, SlimDX, or SharpDX
  • Strong debugging skills using Visual Studio, VS Code, and diagnostic tools


Preferred but required
  • Familiarity with GIS concepts and processes - coordinate reference systems, map projections, spatial databases, and geoprocessing
  • General knowledge of ArcGIS, QGIS, Global Mapper, Civil3D, or OpenRoads
  • Experience with C++
  • Basic knowledge in H&H modeling and/or water resources engineering
  • Experience working with large language models (LLMs) such as Claude or similar AI systems to support software development, data analysis, and workflow automation.


Experience
  • A Bachelor's or Master's (preferred) degree in Computer Science, Mathematics, Physics, or a related field
  • Minimum of 8 years of software development experience


Applicants must be currently authorized to work in the U.S. on a full-time basis. We are unable to sponsor or take over the sponsorship of employment visas

Benefits: At Streamline Technologies, you'll enjoy the best of both worlds: the close-knit atmosphere of a small company and the industry-leading benefits and support of being part of the WGI family of companies. We offer a competitive salary and an exceptional benefits package that includes comprehensive medical, dental, and vision coverage, along with a wide range of additional perks designed to support your well-being and career growth.

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