Software Engineer III at Mercor

Software Engineer III | $80–110/hr | Remote in US (ET/PT Hours)

Join a cutting-edge hiring infrastructure team supporting hundreds of thousands of interviews annually. Work with advanced AI technologies and collaborate with cross-functional partners to build products that directly impact how top talent is discovered and hired globally.

What You'll Do:

• Develop and enhance AI-powered interviewing tools and automation systems that optimize hiring infrastructure
• Implement frontend experiences using React and related frameworks to create intuitive user interfaces for recruiters, interviewers, and candidates
• Build and maintain backend services supporting interview scheduling, AI transcription/summarization, and automation workflows
• Collaborate with AI/ML teams to integrate GPT-4o and other AI technologies for interview feedback automation and quality improvements
• Work with Product Managers, Designers, and Data Scientists to deliver end-to-end product experiences
• Leverage AI-powered development tools including Cursor, Claude Code, and Devmate to accelerate development velocity
• Contribute to the expansion of interview transcription capabilities and implementation of AI quality checker systems
• Support autonomous scheduling improvements and candidate-driven experiences that reduce manual coordinator interventions
• Write clean, maintainable code following engineering best practices and participate in code reviews
• Debug and resolve technical issues across the interview experience stack to maintain system reliability

Required Qualifications:

• Bachelor's degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience
• 4+ years of software engineering experience with object-oriented programming languages such as Java, C++, or C#
• Experience with scripting languages including Python, PHP, or JavaScript
• Proficiency with frontend frameworks such as React, Vue, or similar modern JavaScript frameworks
• Experience collaborating with cross-functional teams in fast-paced, iterative development environments
• Strong problem-solving skills and ability to work independently on complex technical challenges
• Excellent communication skills and ability to work effectively in a team-oriented environment

Preferred Qualifications:

• Experience working with AI-powered development tools such as Cursor, Claude Code, Devmate, or similar AI coding assistants
• Familiarity with GraphQL and modern API design patterns
• Experience with React ecosystem including Relay for data fetching
• Knowledge of AI/ML technologies and experience integrating language models (GPT-4o, Claude, etc.) into production applications
• Experience building scalable web applications and distributed systems
• Background in recruiting technology, HR systems, or enterprise productivity tools
• Demonstrated experience shipping products through the complete development lifecycle from ideation to launch
• Experience with interview scheduling systems, automation platforms, or workflow management tools
• Knowledge of privacy-aware development practices and data handling for recruiting systems

About Cincinnatus:

Cincinnatus is an enterprise staffing company that partners with leading technology companies to source and employ highly skilled professionals for full-time and long-term contingent roles. Cincinnatus serves as the employer of record for these engagements, providing W-2 employment, payroll, benefits, and compliance, while placing employees directly within client teams to work on high-impact initiatives.

Cincinnatus is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex, sexual orientation, gender identity, age, veteran status, disability, genetic information, or any other legally protected characteristic.