Senior Software Engineer C#/.NET

• 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 optimiz e 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)

• E xperience 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, associate without a pre-existing contractual agreement, the submitted resume(s) will be deemed the property of Streamline and no placement fee will be provided.

All agencies and vendors are required to have a signed Streamline vendor agreement form the Streamline Chief HR Officer permitting them to work directly through our Talent Acquisition team. Obtaining this signed vendor agreement is the only way you will receive payment. Verbal or written commitments from any other member of our staff will not be binding.

have an opening for a Senior Software Engineer specializing in C#/.NET, with 8+ years of experience graphics programming, and Windows desktop application development., * 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

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.

We pride ourselves on hiring the best and brightest in our field. At Streamline, we work in an atmosphere of cooperation and mutual respect, and as a company, we embrace a high standard of both external and internal accountability. We value safety, integrity, quality service, business success, and most importantly, our employees.