C-Programmer

Summary: OSInfo Inc. is seeking experienced C programmers to perform forensic source code analysis on a large corpus of C89/C99 code related to active litigation. The work involves comparing proprietary and open-source codebases to determine provenance, authorship, and modification history across hundreds of thousands of source files.

Responsibilities

• Analyze C89/C99 source code to determine whether specific files, functions, and modules are derived from public open-source repositories or represent proprietary development
• Perform function-level diff analysis across multiple versions of the same codebase spanning 2002-2019
• Identify code modifications, insertions, and deletions that distinguish internal development versions from publicly released versions
• Reverse engineer compiled binaries to recover source-level understanding where source is unavailable
• Document findings with control number references suitable for legal proceedings
• Produce expert-quality written analysis that can withstand cross-examination

Required Skills

• Expert-level C89/C99 (this is not modern C++, it's server-side C from the 2000s era)
• Experience with large C codebases (100K+ LOC)
• Familiarity with nginx, Apache, or similar event-driven server architectures
• Source code comparison and diff analysis at the function level
• Understanding of open-source licensing (BSD, MIT, GPL) and how to determine license compliance
• Reverse engineering with IDA Pro, Ghidra, or Binary Ninja
• Ability to read and analyze x86/x64 disassembly

Preferred

• Prior forensic code analysis or litigation support experience
• Familiarity with email server internals (IMAP, SMTP, mail storage formats)
• Experience with Relativity or similar eDiscovery platforms
• Russian language reading ability (comments and variable names in some files)
• Expert witness or deposition experience

Tools

• IDA Pro / Ghidra / Binary Ninja (RE)
• Beyond Compare / Meld / diff (code comparison)
• tree-sitter / pycparser (AST-level analysis)
• git, svn (version control archaeology)
• SQLite (querying forensic databases)
• Python scripting for batch analysis

Engagement: Contract, remote, estimated 3-6 months. NDA and conflict check required. Active litigation, attorney-client privilege applies.