Software Dev Engineer II, Long Term Planning and Forecasting

Build the AI system that decides how Amazon plans. PIXIE is a new agentic AI platform that routes natural-language planning questions to specialist agents, generates trustworthy data-grounded answers, and automates business narratives — all serving analysts across Amazon's supply chain and finance organizations. We're hiring an SDE-II to own core platform subsystems in a greenfield, high-ambiguity environment where your architectural decisions ship to production within weeks.

- You'll design and build production systems at the intersection of LLMs, multi-agent orchestration, and large-scale data retrieval

- You'll work on novel problems: agentic routing with confidence calibration, stochastic evaluation, and authorization-aware knowledge retrieval

- You'll ship visible impact — PIXIE is LTPF's flagship AI investment with VP-level visibility and direct analyst adoption metrics

- Tight engineering team (8 SDEs), high autonomy, rapid iteration cycles

Design, build, and operate core platform services for PIXIE's agentic AI system — including agent runtime, caching/cost-latency optimization, observability, and evaluation infrastructure

Build and maintain the tool/agent registry that enables new capabilities to be discovered and invoked without redeployment

Develop automated evaluation and regression harnesses for non-deterministic LLM outputs — hallucination detection, drift monitoring, and faithfulness scoring

Implement authorization-aware retrieval ensuring users never see content they aren't entitled to

Collaborate with Scientists on grounding methodology, causal analytics productionization, and retrieval-quality optimization

Operate what you build — on-call rotation, runbooks, operational dashboards, and continuous improvement of system reliability

Mentor teammates on system design, code quality, and operational best practices