Software engineer jobs in Seattle, WA

About the role

You’ll own the 0→1 systems behind Symmetry’s Intelligence Layer—building the knowledge extraction, mapping, and retrieval systems that transform AI-native work. This means experimenting with how to extract, represent, and retrieve knowledge from thousands of conversations—and turning those experiments into working systems that power real user experiences across our API and user-facing features/products. If you’re excited by turning product ideas into working LLM systems and iterating through research, data, and prototypes to find what works, you’ll thrive here.

What you'll bring

• Proven ability to build and tune LLM-based agents for reasoning, synthesis, or evaluation tasks.
• Familiarity with prompt engineering and multi-step reasoning —designing structured flows that balance quality, latency, and cost.
• Exposure to fine-tuning or adapter training (LoRA, PEFT) and how to integrate tuned models into retrieval pipelines.
• Ability to work end-to-end —backend (FastAPI, Node) to quick front-end demos or dashboards for testing and iteration.
• Comfort operating in open-ended problem spaces, defining your own experiments, and driving them to working outcomes.
• If you thrive on autonomy, clarity, and collaboration and want to build the connective tissue between humans and AI systems, Symmetry is where you’ll do your best work.