Saga.xyz

Senior AI Engineer

Saga.xyz

full-time

Posted on:

Location Type: Remote

Location: California • United States

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Job Level

Senior

Tech Stack

Distributed SystemsGoPython

About the role

  • Build and maintain the training and inference pipelines for character AI agents, including LLM/SLM orchestration and swarm-based architectures
  • Deploy and operate AI agents across social media platforms (Instagram, X, WhatsApp, TikTok) with consistent character behavior and personality coherence
  • Develop tooling for studios and creators to customize agent personality, lore, brand guidelines, and behavioral guardrails
  • Build and improve the feedback loops — fine-tuning, reward models, RLHF, and RLAIF — that keep agents improving over time
  • Architect and scale the infrastructure supporting agent deployments, including multi-modal capabilities (text, voice, video, livestreaming)
  • Contribute to the agentic commerce platform — enabling agents to drive transactions, recommend products, and interact with payment systems
  • Implement safety and content moderation systems to ensure agents behave appropriately across diverse user interactions
  • Collaborate with studio partners to translate creative direction into agent training parameters and behavioral specifications
  • Monitor agent performance, engagement metrics, and behavioral drift in production

Requirements

  • 5+ years of backend or ML engineering experience, with hands-on work deploying AI/ML models to production
  • Experience with LLM fine-tuning, prompt engineering, and inference optimization
  • Strong proficiency in Python; experience with Golang is a plus
  • Experience building and operating API services and data pipelines at scale
  • Familiarity with reinforcement learning techniques (RLHF, reward modeling) or agent framework development
  • Understanding of multi-model architectures — orchestrating multiple models or agents to collaborate on tasks
  • Experience deploying applications that integrate with third-party platforms and APIs (social media, messaging, commerce)
  • Strong systems thinking — comfortable reasoning about distributed systems, scaling, and reliability
  • Exceptional problem-solving and communication skills.
  • Nice to Have
  • Experience with character AI, conversational AI, or NPC behavior systems
  • Background in gaming, entertainment, or media technology
  • Experience with multi-modal AI (voice, image, video generation or processing)
  • Familiarity with blockchain infrastructure, on-chain payments, or crypto-native commerce
  • Experience with MCP (Model Context Protocol) or agent-to-agent communication protocols
  • Understanding of content safety, trust & safety systems, or responsible AI practices
  • Contributions to open-source AI/ML projects
Benefits
  • Work remotely from anywhere in the world
  • Work at the intersection of AI, entertainment, and crypto
  • Flexible working hours
  • Flexible vacation policy
  • Competitive salary
  • Stock options
  • Full benefits*
  • *Medical, Dental, Vision, and 401k retirement plans for US employees only.
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
backend engineeringML engineeringAI/ML model deploymentLLM fine-tuningprompt engineeringinference optimizationPythonGolangAPI servicesdata pipelines
Soft Skills
problem-solvingcommunicationsystems thinking