Senior Software Engineer

Founding Software Engineer – OuterSignal Join to apply for the Founding Software Engineer role at OuterSignal . About OuterSignal We are building the customer intelligence layer for commerce. Brands know when an order comes in, but they only see ~5% of the real story. We show them the other 95%: not just who bought, but who that person is—the execs, influencers, journalists, retail buyers, investors, and everyday customers who become a brand’s best evangelists. Our platform enriches every order in real time with professional + personal signals, unlocks personas, and powers everything from surprise‑and‑delight outreach to smarter email flows, analytics, and BD leads. We serve 150+ brands and are growing 50% month‑over‑month—all within our first six months of operation. We’re a small, high‑performing team building the category‑defining platform for e‑commerce customer intelligence, backed by a world‑class investor base. What You’ll Do Architect and own core systems that process millions of orders across APIs and LLM pipelines Build queue‑based microservices using Redis, Node.js, Typescript, Postgres, Docker/K8s, Vercel Integrate vector databases + RAG pipelines to make customer profiles smarter, faster, and searchable in real time Ship features end‑to‑end: APIs, dashboards, integrations (Shopify, Klaviyo, Slack, Zapier, Gorgias) Keep us ahead on privacy & compliance Work directly with Founding Team on roadmap, product direction, and hiring future engineers Who You Are 5+ years engineering experience, ideally with backend infra + distributed systems Experience in a fast‑paced startup or willingness to dive in to a dynamic, changing environment Fluent in JS/TS (Node), with some Python/ML exposure a plus Experience with vector databases (Pinecone, Weaviate, pgvector, etc.) and RAG architectures Comfortable designing schemas + scaling Postgres Bonus if you’ve built around LLMs, Shopify apps, or data‑privacy frameworks Most importantly: you want ownership. You like to build quickly, solve “figure‑it‑out” problems, and aren’t afraid of messy early‑stage work. Why Join Now Early seat: This is shaping the DNA of OuterSignal’s engineering org. Massive upside: Meaningful equity in a venture‑backed company defining a new SaaS category High leverage work: You’ll see your code directly impact customers, revenue, and growth Big surface area: From AI pipelines to Shopify apps to RAG/vector search infra, you’ll touch it all Right moment: We’re past prototype, real brands already rely on us and have PMF, but the ceiling is wide open #J-18808-Ljbffr