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Posted Apr 10, 2026

[Remote] AI Agent Engineer

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Note: The job is a remote job and is open to candidates in USA. Sonar is a mission-driven startup redefining personalized mental health support through AI-enabled chat-based systems. The AI Agent Engineer will design, test, and improve AI systems, focusing on internal workflows and performance evaluation to enhance the product's effectiveness. Responsibilities - Design, build, and improve agent-based AI systems for internal workflows - Develop internal tooling and infrastructure for evaluating AI system quality and performance - Build frameworks to benchmark models, vendors, and system configurations to inform product decisions - Improve the quality, reliability, and effectiveness of agents through experimentation and testing - Partner cross-functionally to translate product and operational needs into automated processes - Contribute to the design of memory, feedback, and workflow systems that improve AI performance over time - Contribute to our codebase to implement and improve AI systems and tools Skills - Strong proficiency in Python and SQL - Familiarity with GitHub and modern software engineering workflows - Experience building projects involving agents, LLM-based systems, or related AI applications - Clear evidence of shipping and implementing technical projects, whether in industry, research, or high-quality side projects - Experience working with conversational datasets - Bachelor's or Master's degree in computer science, data science, or a related field - Experience working with mental health and/or healthcare data - Familiarity with LangGraph and Pydantic for multi-agent orchestration - Experience designing or running AI evaluations - Contributions to open-source AI repositories Benefits - Equity: Meaningful equity, commensurate with experience - Unlimited PTO - Health benefits Company Overview - Sonar is a healthcare company focusing on the proactive identification and intervention of mental health challenges in youth. It was founded in 2022, and is headquartered in Mill Valley, California, USA, with a workforce of 2-10 employees. Its website is https://www.sonarmentalhealth.com.