Senior Fullstack Engineer Agentic Infrastructure
Company: Internet Brands
Location: El Segundo
Posted on: January 16, 2026
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Job Description:
Internet Brands is looking for a Senior Fullstack Engineer to
join our Agentic AI team. Youll help build our AI capabilities from
the ground up, designing and shipping tools, services, and
intelligent agents that power AI experiences across our entire
product ecosystem. What Youll Do • Build and ship full-stack AI
applications: Create frontend experiences and backend systems that
power real AI capabilities, iterating based on performance and user
feedback • Own the full lifecycle: Take projects from idea through
production deployment, ensuring quality, reliability, and
scalability • Build foundational infrastructure: Develop
search/retrieval services, tool execution layers (MCP servers),
workflows, and intelligent agents • Establish measurement systems:
Create feedback loops and performance tracking to continuously
improve AI system behavior • Solve complex problems: Debug issues
across the stack, identify root causes, and implement robust
solutions What Were Looking For Foundation (Required): • 5 years
shipping production code (frontend and backend) • Strong
programming fundamentals: We’ll primarily use JavaScript, Python
and PHP, but value problem-solving skills over specific language
expertise • Backend development experience: Building workflows,
APIs, state management, and async systems • Database knowledge:
Working with both SQL and NoSQL databases • Frontend skills:
Building responsive interfaces with modern frameworks (React, Vue,
Angular, Svelte, etc.) • Experience applying AI/ML in production:
Youve worked with LLMs or ML models in real applications, not just
tutorials Working Style: • Ownership mindset: You identify
problems, take initiative, and see things through • Pragmatic and
adaptable: You choose the right tool for the job and arent afraid
to learn new technologies • Systematic problem-solver: You can
debug complex systems and think through tradeoffs Good to Have: •
Knowledge of AI evaluation, error analysis, and building feedback
loops • Experience with agentic frameworks (LangGraph, Google ADK)
or Model Context Protocol (MCP) • Background in information
retrieval or search systems
Keywords: Internet Brands, Paramount , Senior Fullstack Engineer Agentic Infrastructure, IT / Software / Systems , El Segundo, California
