C Codebase Specialist — Remote Contract Engineer

Embedded Shishya; United States; Remote; USD 60,000 - 90,000; Part time

Job summary

Mercor, a remote-first company, seeks a Software Engineer for C codebase Q&A tasks. You will select, study, and rewrite questions from pre-validated C repositories, ensuring clarity and fairness while iterating through Mercor Studio validation cycles.

You will document work and respond to reviewer feedback as part of a distributed team across multiple regions. The role demands 3+ years in production C, ability to navigate large codebases, memory management skills, and precise English writing for

Qualifications

• 3+ years of professional software engineering experience with substantial production C.
• Ability to navigate large, unfamiliar C codebases and explain runtime behavior.
• Comfort with preprocessor-heavy builds, platform conditionals, and manual memory management.
• Experience with databases, cryptography, networking protocols, or systems programming.
• Ability to use debuggers, sanitizers, tracing, and profilers.
• Precise written English for crafting questions and rubrics.

Responsibilities

• Select tasks from a pre-validated pool of C repositories, each with an engineering question and a golden solution.
• Explore the repository to understand the subsystem, including relevant PR or issue history.
• Rewrite task questions to challenge frontier coding agents while ensuring clarity and fairness.
• Adjust rubrics and foils to reward correct reasoning and reject incorrect answers.
• Run the full validation loop in Mercor Studio and iterate until every stage passes.
• Document work in the task README and address reviewer feedback on returned tasks.

Skills

C programming

Codebase navigation

Memory management

Databases

Cryptography

Networking protocols

Systems programming

Debugging & profiling tools

English writing

Tools

Debuggers

Sanitizers

Profilers

Tracing

Job description

Mercor, a remote-first company, seeks a Software Engineer for C codebase Q&A tasks. You will select, study, and rewrite questions from pre-validated C repositories, ensuring clarity and fairness while iterating through Mercor Studio validation cycles.

You will document work and respond to reviewer feedback as part of a distributed team across multiple regions. The role demands 3+ years in production C, ability to navigate large codebases, memory management skills, and precise English writing for