.NET Developer (Reverse Engineering & API Integration) for Quick Job

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Job Summary: We are seeking a skilled and detail-oriented .NET Developer with strong experience in decompiling .NET applications and reverse-engineering API interactions. The ideal candidate will be responsible for analyzing legacy .NET codebases, identifying data flow mechanisms, and uncovering API endpoints that ingest or transfer data into SQL Server databases. Key Responsibilities: • Decompile .NET applications (primarily .DLL and .EXE files) using tools like dotPeek, ILSpy, or similar. • Analyze and reverse-engineer application logic to identify API endpoints, authentication methods, and data transfer patterns. • Document the API structures, payloads, and workflows involved in the data ingestion to SQL Server. • Reconstruct or replicate identified endpoints as needed for integration or migration purposes. • Collaborate with database administrators and backend engineers to map and validate the data being pulled into SQL Server. • Ensure any newly developed or reverse-engineered components follow best practices in security, performance, and scalability. • Provide technical guidance and documentation of all findings for internal stakeholders. Required Skills: • Strong proficiency in C# and the .NET Framework/.NET Core. • Proven experience with decompilation tools such as dotPeek, ILSpy, dnSpy, or similar. • Deep understanding of web APIs (REST, SOAP) and how to reverse-engineer their calls. • Familiarity with HTTP protocols, headers, payload formats (JSON/XML), and API authentication methods (e.g., OAuth, API keys). • Experience with SQL Server and T-SQL, including writing queries, analyzing schema, and understanding data relationships. • Solid debugging and analytical skills, with the ability to dissect compiled code and uncover system behavior. Preferred Qualifications: • Experience with legacy .NET systems and monolithic applications. • Background in application security or penetration testing (bonus). • Familiarity with tools like Fiddler, Postman, or Wireshark for network traffic analysis. • Understanding of data integration workflows and ETL pipelines.

Price: $70.0

.NET Framework API Integration