Mark Mossberg
Berlin, Germany
Summary
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Top SchoolMark Mossberg is a systems software engineer based in Berlin with 13 years of experience focused on backend development, tooling, and security-sensitive code. He has practical expertise working with low-level Windows APIs, instrumentation, and symbolic execution tools, contributing to notable open-source projects like osquery and Manticore. His contributions show a knack for refactoring for safety and maintainability—introducing smart pointers, hardening symbolic syscall handling, and improving cross-architecture robustness. Mark also brings domain knowledge in blockchain tooling, having improved an EVM disassembler to better handle diverse trace formats and coverage highlighting. Known for quietly strengthening reliability and developer ergonomics, he blends systems-level rigor with a pragmatic approach to long-lived code.
13 years of coding experience
Northeastern University
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (23)
c-language10
solidity10
dis10
python10
wp-api10
wmi10
evm10
winapi10
security10
ethereum10
disassembly10
symbolic-execution10
ws-api10
cprogramming-language10
debug9
Programming languages (10)
Github contributions (5)
trailofbits/manticore
Feb 2017 - Apr 2019
Symbolic execution tool
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:2 releases, 205 commits, 368 PRs in 2 years 2 months
Contributions summary:Mark's contributions primarily involve enhancing the Manticore tool. They focused on refactoring the code, particularly related to the handling of symbolic system calls and file interactions, making the project more robust and architecture-independent. They also addressed several bugs and made significant improvements related to the management and output of testcases, specifically in relation to Ethereum contracts and Solidity. The user also contributed to improving the codebase's reliability by identifying and correcting various issues.
symbolic-executionbinary-analysispythonsmtethereum
osquery/osquery
Feb 2019 - Dec 2019
SQL powered operating system instrumentation, monitoring, and analytics.
Role in this project:Back-end Developer
Back-end DeveloperContributions:10 commits, 10 PRs, 27 comments in 10 months
Contributions summary:Mark primarily contributed to the back-end functionality of the osquery project, focusing on Windows-specific features and improvements. Their work included fixing spelling issues, adding product version information to the file table, refactoring WMI code to use smart pointers for memory management, and enhancing the certificate table by fixing enumeration bugs and adding new columns. These contributions involved interacting with the Windows API and improving the project's ability to gather system information.
instrumentationanalyticsoperating-systemsecuritysql
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