Remote Senior C Engineer - AI Trainer

As a Senior C Engineer, you will work remotely on an hourly paid basis to review AI-generated C code, low-level systems designs, and technical explanations, as well as generate high-quality reference implementations and step-by-step reasoning for complex engineering problems. You will assess solutions for accuracy, clarity, safety, and adherence to the prompt; identify errors in logic, memory handling, concurrency, or performance; fact-check technical information; write high-quality explanations and model solutions that demonstrate correct methods; and rate and compare multiple AI responses based on correctness and reasoning quality. This fully remote, hourly paid contractor role is with SME Careers, a fast-growing AI data services company and subsidiary of SuperAnnotate that provides AI training data to many of the world’s largest AI companies and foundation model labs. Your systems-level C expertise will directly help improve the world’s premier AI models used by millions of developers worldwide. Key Responsibilities

Develop AI Training Content : Create detailed prompts in various topics and responses to guide AI learning, ensuring the models reflect a comprehensive understanding of diverse subjects. Optimize AI Performance : Evaluate and rank AI responses to enhance the model's accuracy, fluency, and contextual relevance. Ensure Model Integrity : Test AI models for potential inaccuracies or biases, validating their reliability across use cases. Your Profile

Bachelor’s degree or higher in Computer Science, Electrical / Computer Engineering, or a closely related technical field. 4+ years of professional experience developing production software in C for systems, embedded, or performance-critical applications. Expert-level proficiency in C, including deep understanding of pointers, memory management, undefined behavior, and low-level debugging. Strong background in systems programming concepts such as concurrency, operating systems, hardware interaction, and performance optimization. Hands-on experience with build systems, compilers, linkers, and debugging tools commonly used in C development. Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines. Proven experience conducting detailed code reviews and enforcing coding standards for safety and maintainability in C codebases. Comfort working with version control, CI / CD workflows, and automated testing for C projects. Previous experience with AI data training, annotation, or evaluating AI-generated technical content is a strong plus. Highly detail-oriented and systematic, with a methodical approach to evaluating reasoning quality and identifying subtle issues in low-level code.

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