Hybrid Full Stack Engineer

at Comet

• Job title: Full Stack Engineer
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: Not specified
• Degree requirement: No Education Requirement
• Tech skills: Java, Python, React, TypeScript
• Location requirements: Hybrid, Tel Aviv, Israel

About the role

• Full Stack Engineer seeking to build the Opik product for AI applications at Comet. Engaging in fast-paced development and collaboration with AI researchers and ML engineers.

Responsibilities

• Build & ship features at high pace in a fast-moving AI development environment
• Develop and maintain comprehensive observability tools for LLM applications and RAG systems
• Create intuitive user interfaces for LLM tracing, evaluation dashboards, and production monitoring
• Build robust APIs and backend services to support real-time LLM application monitoring
• Collaborate with AI researchers and ML engineers to implement cutting-edge evaluation methodologies
• Contribute to both frontend (React/TypeScript) and backend (Python/Java) components
• Design and implement automated evaluation systems and "LLM as a Judge" capabilities
• Work on integrations with popular LLM frameworks and libraries
• Participate in open-source community engagement and technical documentation

Requirements

• 3+ years of full-stack development experience, preferably in AI/ML domains
• Hands-on experience with AI-assisted coding environments, IDEs, and agent-based workflows (e.g., Cursor, Windsurf, GitHub Copilot, Codex, Claude Code, and similar platforms)
• Deep understanding of different AI model capabilities, limitations, and appropriate use cases (GPT-5, Claude, Gemini, etc.)
• Expertise in TypeScript, React, and modern web development practices
• Strong proficiency in Python and/or Java with frameworks like Dropwizard
• Knowledge of scalable database design and containerization
• Experience with tracing, monitoring, and evaluation systems
• Strong communication skills for working in a distributed, global team environment
• Ability to work in ambiguous environments and solve complex technical challenges.
• Nice to have: Experience contributing to or maintaining open-source projects.
• Nice to have: Understanding of Large Language Models, RAG systems, and AI application architectures.

Benefits

• Competitive salary, based on proven experience, skills and location.
• Competitive benefits package.
• Flexible working hours and remote/Hybrid work options.
• Opportunities for professional growth and development.
• A collaborative and innovative work environment.
• The chance to work with cutting-edge technologies and projects.