Secure Web API Developer (C#/.NET)

Threatlocker Inc; Orlando (FL); On-site; USD 90,000 - 110,000; Full time

Job summary

ThreatLocker seeks a Web API Developer in Orlando to design, develop, and maintain secure RESTful APIs using C#/.NET. You will ensure clean architecture, MVC separation, and robust data access with SQL Server.

You will collaborate with cross-functional teams to deliver scalable endpoints, implement authentication/authorization, and contribute to mature, testable services with strong security focus. The role emphasizes code quality, reviews, and ongoing learning within ThreatLocker’s

Qualifications

• Three years of professional experience developing C#/.NET and ASP.NET Web API or ASP.NET Core.
• Understanding of MVC pattern, routing, DI, middleware, and request/response handling.
• Experience designing and consuming RESTful APIs using HTTP methods, status codes and JSON.
• Familiarity with async programming, logging, and debugging in .NET.
• Secure coding practices including input validation and authorization.
• Git usage and collaborative development workflows.
• Bachelor’s degree in Computer Science, Software Engineering, or equivalent hands‑on experience.

Responsibilities

• Design, develop, and maintain secure RESTful Web APIs using C#/.NET.
• Apply MVC pattern and separation of concerns in controllers, models, services, and data access.
• Implement API endpoints with validation, authentication, authorization, error handling, and logging.
• Integrate APIs with SQL Server and internal services for reliability and performance.
• Diagnose and resolve API behavior, concurrency, and data access issues.
• Collaborate with teams to refine requirements and deliver dependable solutions.
• Participate in code reviews, testing, and documentation to improve codebase.

Skills

C#/.NET

MVC pattern

RESTful APIs

Git collaboration

Secure coding

Education

Bachelor’s degree in CS or related

Tools

ASP.NET Web API

ADO.NET

SQL Server

Job description

ThreatLocker seeks a Web API Developer in Orlando to design, develop, and maintain secure RESTful APIs using C#/.NET. You will ensure clean architecture, MVC separation, and robust data access with SQL Server.

You will collaborate with cross-functional teams to deliver scalable endpoints, implement authentication/authorization, and contribute to mature, testable services with strong security focus. The role emphasizes code quality, reviews, and ongoing learning within ThreatLocker’s