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# Net Developer

- **Company:** Robotics Technologies LLC
- **Location:** New York, NY, United States
- **Contract:** Temporary contract
- **Skills:** .NET Framework, Application Programming Interfaces (APIs), C Sharp (Programming Language), Language Integrated Query, Entity Framework, Memory Leaks, Software Engineering, SQL Databases, Functional Programming, Api Design
- **Published:** June 19, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=5834b7e13b17afd6

## About the Role

Do you have experience in Query execution time improvement?, I don t see any LINQ or Entity Framework expertise. We need this core expertise otherwise; they will not be suitable.

 * .NET App development with Entity Framework and LINQ skills
 * Expertise in System. LINQ. Expressions: They must move beyond "using" LINQ to "building" it. They require extensive experience in manually constructing and modifying Expression Trees (using Expression Visitors) to rewrite queries at runtime.
 * EF Core Internals & SQL Translation: Deep understanding of the Entity Framework Core translation pipeline. They should know how to troubleshoot "could not be translated" errors by restructuring C# logic into SQL-compatible structures (like Joins and Projections).
 * Advanced Metaprogramming: Proficiency in Runtime Type Generation. They should be able to create dynamic types at execution time to handle varying data shapes without causing memory leaks.
 * Architectural Pattern Mastery: Advanced experience with the Builder Pattern and Fluent API Design (similar to how the EF Core "Fluent API" itself is built).
 * Functional Programming in C#: High comfort level with generics, delegates, and higher-order functions (passing logic as data).

## Description

Core skill- Expertise in System. LINQ. Expressions: They must move beyond "using" LINQ to "building" it. They need deep experience manually constructing and modifying Expression Trees (using Expression Visitor) to rewrite queries at runtime.


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