seldon - MTS: AI Research Engineer
Requirements
• Systems, Not Prompts: You prioritize state machines, orchestration layers, and tool-use contracts over prompt hacking. You build for reliability, inspectability, and improvability - you’re uncomfortable with “it just works sometimes.” If it can’t be measured, it doesn’t ship. • Production Experience: You have 5+ years building complex software and 2+ years shipping agentic LLM systems. You’ve built harnesses where agents manage tool selection, error recovery, and multi-step execution autonomously in production environments that run, break, and evolve. • Orchestration Systems: You’re experienced with multi-agent orchestration, sandboxed execution, and complex backends. You optimize for coordination, scoped memory & context, and how agents degrade gracefully under pressure. • Python Mastery: You’re an expert in async programming and structured data modeling (Pydantic), building maintainable, scalable systems designed for extensibility. • Fast, Iterative Builder: You thrive when research and product move together. You’re comfortable shipping quickly, learning from real users, and refining systems in tight loops. • High Ownership, Low Ego: You take responsibility for what you build. You’re willing to be wrong, change your mind, and prioritize being effective over being “theoretically right. • Comfortable at the Frontier: You’re excited by ambiguous problems. You’re not waiting for best practices - you’re helping define them. • Product Intuition: You prioritize signal over noise because outputs matter. You care that what you build helps someone make a decision. • All Backgrounds Welcome: Some of us are dropouts, some have PhDs. Some are tech veterans, some are first-timers. What matters - how you think, how you build, and how you work in teams.
Benefits
• The People: Join a global team of founders, engineers, researchers, and adventurers obsessed with human behavior - we’re curious, willing to be wrong, and privileged to be solving hard problems at the frontier. • The Problem: Deep science with real impact. We leverage behavioral modeling, cognitive science, and cutting-edge AI to solve real product challenges for real customers. • The Velocity: Ship fast and learn faster. Work directly with customers and see the impact of your work in hours, not weeks or months. • The World-Class Backing: Backed by top funds including MaC VC, Protagonist, Rackhouse, Blank, and Weekend Fund, as well as scouts at a16z, Greylock and CRV, and product leaders and researchers from orgs. inc. Meta, Airbnb, Google, Discord, Uber and more. • The Member Of Staff Philosophy: You don’t care about titles - you value extreme ownership. • Health (US only): 100% paid medical, dental & vision • PTO: 28 days (inc 5 company-wide days on stats) • Environment: Beautiful offices in SoMa & Tower Bridge optimized for deep collaboration • WFH: 2 days/week (Mon & Fri) to catch up on laundry, save time commuting, and let your cat walk across the keyboard • Adventures: Team dinners, offsites, and events throughout the year
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