Behavior Engineer (AI)

Location: San Carlos, California, United States; on-site

Salary: $190,000–$280,000 per year plus equity

Company

hirify.global builds NEO humanoid robots designed to move, learn, and perform household tasks safely alongside people.

What you will do

• Design and implement scalable behavior architectures for autonomous, multi-step household tasks using cloud-based world models.
• Build decision-making frameworks with behavior trees, hierarchical state machines, planners, or similar AI architectures.
• Integrate behavior systems into real-world robot operation with Core, World Model, Apps, and Motion teams.
• Improve the realism, robustness, and adaptability of robot behaviors.
• Establish engineering practices and tools for authoring and debugging complex AI behaviors at scale.

Requirements

• 6+ years of professional experience developing gameplay systems, conversational AI, NPC behaviors, or system architecture at Senior level.
• Strong C++, systems programming, object-oriented design, and performance-critical software engineering skills.
• Expertise in gameplay systems, conversational AI, NPC behavior, or complex interactive environments.
• Strong understanding of decision-making architectures, planning systems, and autonomous agent behavior.
• Bachelor’s degree in Computer Science, Software Engineering, Game Development, Robotics, AI, or a related technical field.
• Experience with Unreal Engine, Unity, proprietary game engines, or large-scale simulation environments.

Nice to have

• Experience with behavior trees, GOAP, hierarchical state machines, planners, or similar architectures under tight performance constraints.
• Background in open-world games, large-scale simulations, conversational AI, or emergent gameplay systems.
• Familiarity with robotics, autonomous systems, reinforcement learning, embodied AI, navigation, pathfinding, task scheduling, perception, or world modeling.

Culture & Benefits

• Builder-oriented environment focused on ownership, speed, direct communication, and high standards.
• Medical, dental, and vision coverage, paid time off, company holidays, and parental leave.
• 401(k) plan with company match, plus FSA and HSA options.
• Commuter benefits, disability and life insurance, and an Employee Assistance Program.
• Onsite snacks and catered lunches.