Capsule · 2 days ago
AI Engineer (CTO-track)
United States
Full-time
Remote
Mid, Senior Level
$120K/yr - $225K/yrCapsule is building an AI system that captures, organizes, and interacts with human memory, personality, and voice. They are seeking a senior AI builder to architect Capsule's intelligence layer end-to-end, owning the memory capture, structuring, retrieval, and experience improvement processes.
Computer Software
Responsibilities
Architect the intelligence layer powering Remi and Capsule–includes memory ingestion, structuring, retrieval, and long-term context
Build the memory system (schemas/representations, embeddings + retrieval, summarization, entity/relationship tracking, user controls)
Improve conversation quality: coherence, emotional attunement, safety, and consistency across long time horizons
Design and run evaluation: offline test sets, golden conversations, automated scoring, regression tests, and online quality monitoring
Own experimentation to production: prototype quickly, validate with users, deploy, monitor, iterate
Make infrastructure decisions: model/provider strategy, pipelines, observability, latency/cost tradeoffs, data privacy and retention
Partner with product/design to translate human needs (trust, grief, family dynamics, legacy) into robust technical systems
Lead technically as the team grows: set standards, mentor, and help define hiring priorities over time
Qualification
Required
Shipped an LLM product to production with real users (quality + reliability mattered)
Hands-on with RAG/retrieval, embeddings, tool/function calling, and orchestration
Built evaluation/monitoring (offline + online) and iterated based on data
Strong engineering fundamentals (APIs, data modeling, security/privacy basics, observability)
Preferred
Former technical founder or early-stage startup lead (0 to 1, shipping under constraints)
Experience with voice (STT, diarization, voice cloning/synthesis, audio pipelines)
Background in NLP, cognitive science, psychology, or human-centered AI
Familiarity with AI-assisted development workflows (Cursor/Codex or similar) to move faster
Benefits
Significant equity
Company
Capsule
Eternal Legacy, Powered by Ai.
2-10 employees
Funding
Current Stage
Early StageCompany data provided by crunchbase