Senior Agentic AI Engineer

Senior Agentic AI Engineer

$300,000 - $400,000

Remote / Hybrid, Palo Alto

Full time / Permanent

A well-known, frontier GenAI company (Series B, $130M+ raised) is undergoing a major product pivot. They're moving from single-modal generative experiences toward a consumer-facing, multimodal, multi-agent ecosystem designed to feel genuinely autonomous, useful, and alive. They’re building the core infrastructure that will define how millions of users interact with AI agents daily. From planning and execution to memory, creativity, and proactive behaviour.

This role sits at the heart of this shift: designing and shipping the systems that make intelligent agents function for 1M+ users.

• Design and evolve the agent runtime, the core loop handling reasoning, tool use, planning, memory retrieval, and response generation
• Build and ship agent capabilities across modalities (e.g. image/video, voice, browsing, code execution)
• Own LLM orchestration and model routing across multiple providers, optimising latency, cost, reliability, and quality
• Implement memory systems that allow agents to learn from interactions (long-term memory, episodic recall, semantic retrieval)
• Prototype and product ionize autonomous behaviours such as proactive task execution, scheduling, and goal‑directed workflows
• Create evaluation frameworks and metrics that measure agent quality, personality consistency, and real user impact

• You’ve personally built and shipped agentic systems, not just prompt wrappers or demos
• You’re comfortable owning ambiguous, greenfield problems and turning ideas into working product fast
• You think in systems: distributed workflows, multi‑step reasoning, orchestration, reliability
• You code daily and care deeply about performance, UX feel, and real‑world usefulness

• Join at a genuine product inflection point, early access launch, new architecture direction, and strong internal momentum
• Work in a small, elite engineering cohort where each senior hire has outsized ownership and influence
• Help define the company’s next‑generation agent platform and model infrastructure from the ground up
• Collaborate closely with product leadership and shape how consumer AI agents evolve in the real world
• Clear trajectory toward technical leadership and founding‑level impact as the organisation scales

If you’ve built real agent systems and want to work on problems that don’t have playbooks yet, please apply with your resume!