Senior Software Engineer, Intelligence

About the Role: AngelList is seeking Senior Software Engineers to join our Intelligence team. You will design, build, and operate services that power retrieval, semantic search, agent orchestration, model integrations, and data pipelines that turn our proprietary signals into product features. You will have the opportunity to: Work with one of the deepest private‑market datasets in the world and build systems that surface high‑value signals for investors. Design and operate OpenSearch‑backed retrieval and semantic search systems and tune them for real product use. Build and run agent orchestration, model integrations, and safety layers for LLM‑driven workflows. Prototype new AI‑driven features and productionize them in a Go‑first codebase. Own large features end‑to‑end and improve our testing, observability, and operational practices. You are most likely: A full‑stack generalist or backend specialist who can work across the stack, with at least 4+ years of experience building large‑scale web applications or backend services. Comfortable writing clean, production‑quality Go (Golang) code, including services, libraries, and tests. Our repo is Go‑first and includes modern Go AI and search libraries. Experienced in production search systems such as OpenSearch, Elasticsearch, or comparable platforms, with a track record of designing mappings and tuning queries for real traffic. Excited about LLMs, agents, embeddings, and retrieval, and able to turn prototypes into reliable, instrumented services. Experience working with LLM APIs, tokenizers, or cloud GenAI SDKs is a plus. Comfortable with and curious about working outside of a traditional, narrow engineering role. A self‑starter: you have started something meaningful on your own – a startup, an open‑source project, or something else to share with us! How success will be measured in this role: Consistently delivers high‑quality, well‑tested code that meets the team’s goals and timelines. Actively contributes to team discussions and decisions, bringing thoughtful technical perspectives. Mentors and supports other engineers, helping to elevate the overall team performance. Working Here: If you don’t meet every requirement above, we still encourage you to apply. We value complementary strengths and operators who learn by doing. AngelList has offices in a few cities, with our engineering hub in SanFrancisco. We’re building our engineering and product teams around this hub to make the most of in‑person collaboration. We have a hybrid in‑office model: teammates come in at least 2 days per week (Tuesdays and either Wednesday or Thursday). Compensation: The compensation for this role consists of a competitive base salary, benefits, and equity package. The base salary for this role is $200,000+ annually but actual will vary based on a number of factors including a candidate’s professional background, experience, and location. Additional details about our Total Rewards package will be provided during the recruitment process. Benefits: We support your life both in and outside of work. What Guides Us: At AngelList, we are united in our purpose to accelerate innovation and build the future of private markets. Our beliefs and values shape what we work on and how we create impact. If the below resonate, we'd love to have you with us. AngelList is an equal opportunity employer and we value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. #J-18808-Ljbffr