Senior Software Engineer (Remote | $30–$100/hr)

About the role

Synthires is seeking a software engineer contractor for approximately 15 hours per week. Help train next-generation AI systems by creating challenging coding tasks and implementing deterministic verifiers that distinguish valid solutions from incorrect ones. No prior AI experience is required.

Responsibilities

• Create realistic coding tasks involving feature implementation and bug fixing.
• Build deterministic verifiers that accept valid solutions and reject incorrect ones.
• Debug, test, optimize, and refactor code.
• Evaluate solutions using strong code review and testing practices.

Requirements

• Strong backend experience with Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar.
• Experience building scalable services and APIs.
• Strong debugging, performance optimization, and automated testing skills.
• Solid code review and software engineering judgment.
• Preferred: experience with large-scale application development and refactoring; strong knowledge of algorithms, data structures, and computer science fundamentals; experience designing test strategies, maintaining large test suites, or diagnosing flaky tests; and strong analytical, problem-solving, and technical communication skills.

How to apply

Submit your application and screening questions. Complete a ~30-minute AI interview and the technical assessment, if required. The hiring manager will review your application.

Apply directly on CazVid.

Datos clave

• Contractor role, approximately 15 hours per week.
• Compensation is $30–$100/hour, output-based.
• Strong backend experience with Java, Node.js, Go, Rust, TypeScript, Python, C++, or similar is required.
• Approximately 100 positions are available.