Senior Software Engineer C#/.NET

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. 

Streamline Technologies Inc. is a software development firm located in the Orlando,FL area, specializing in water resources engineering applications and flood forecasting.

Our philosophy and reputation are built on providing innovative software solutions such as the widely used hydrodynamic stormwater model, StormWiseTM (formerly ICPR ®), and our flood forecasting technology, FloodWiseTM.

Our water resources and flood forecasting applications include complex physics-based mathematical models that simulate the rainfall-runoff process, natural & man-made drainage system hydraulics, groundwater flow, water quality, and green stormwater infrastructure. Our applications center around a geospatial graphical interface that utilizes aerial imagery, thematic-based polygons, and digital elevation models. 

#Li-onsite

• 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 

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.

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.

Streamline is committed to providing equal employment opportunities to all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status or individuals with disability. Streamline is an Equal Opportunity Employer.

Physical Demands:

The physical demands are representative of those that must be met by an employee to successfully perform the essential functions of this job.  Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.  Work is performed in an office setting.  Hand-eye coordination is necessary to operate a computer, keyboard and mouse.  Use of a telephone headset will allow for virtual communication with team members through Zoom and/or Microsoft Teams.  While performing the duties of this job, the employee is often required to sit for prolonged periods, use hands/fingers to handle, feel or operate objects, tools or controls and reach with hands and arms, speak and hear.  Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral vision, depth perception, and the ability to adjust focus.

Streamline does not accept any unsolicited resumes. should any 3rd part agency or recruiter forward or submit any resume(s) to a Streamline 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. 

All third-part recruiting/supplemental staffing agencies are expected to familiarize themselves and abide by this policy.