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Senior .NET Engineer | Legacy Systems & Reverse Engineering (Onsite)

SSC HR Solutions

Responsibilities

What is to be done

  • Decompile the .NET binaries and read the code (ILSpy, dotPeek or similar).
  • Review any remaining Classic ASP pages and ASPX sources on the server.
  • Map the database: schemas, stored procedures, SSIS packages, SQL Agent jobs, replication.
  • Reconstruct the business logic of each module: data collection, data services, reporting, archiving, user management.
  • Document every integration from the application side, including aviation feeds such as Type B messages and ACARS.
  • Interview users, the administrator, finance, and the teams using the other endpoints of each interface.
  • Write the FSD, Integration Register and Data Dictionary.
  • Work read-only on production. Report progress daily.
  • Obtain access. Decompile the binaries, map the database, build a first picture of the application.
  • Application inventory, decompiled code baseline
  • Work through the system module by module. Interview users, the admin, finance and the teams using each interface.
  • FSD drafts, integration register v1
  • Complete and validate everything. Hand over the final documents and brief the decision gate.
  • Final FSD, Integration Register, Data Dictionary

Requirements

  • 7+ years of .NET, with real depth in the Framework era — C# and VB.NET, ASP.NET WebForms.
  • Hands-on reverse-engineering experience: decompiled and understood production systems with no source and no documentation.
  • Strong SQL Server: T-SQL, stored procedures, SSIS, SQL Agent, replication.
  • Integration experience: APIs, SFTP, file exchange and direct database links.
  • Strong technical writing — we will ask to see examples of created documents.
  • Fluent English and availability to work on-site in Cairo full-time.

Preferred

  • Arabic.
  • Classic ASP, SSRS or Crystal Reports.
  • Previous legacy modernisation or migration work.
  • Who fits

Senior .NET Engineer

SSC HR Solutions · Cairo, Egypt · — · Posted 2026-10-15

Hand over

  • Month 1
  • Month 2
  • Month 3

Nice to have

  • Airline systems background: Type B messages, ACARS, SSIM, Amadeus, Lido, AMOS or SAP.
  • Comfortable working in ambiguity — nothing is written down and there is no one to ask.
  • Patient with people, precise with facts.
  • Careful and discreet: sensitive data, read-only discipline, no risky moves on production.
  • Honest daily and weekly reporting — no surprises at the monthly reviews.

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