Senior Software Engineer \ Search Engineer (Elasticsearch & Vector Search)

Posted Yesterday
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Hiring Remotely in Poland
Remote
Senior level
Information Technology • Internet of Things
The Role
Own the search infrastructure for an LLM-powered financial intelligence platform. Build hybrid keyword and vector search, tune relevance, integrate OpenAI embeddings with Elasticsearch, optimize query performance and indexing, and develop asynchronous Python services using FastAPI. The role also involves RAG pipeline development, search-quality evaluation, and designing efficient document schemas for retrieval.
Summary Generated by Built In
Description

Join a Company That Invests in You

Seeking Alpha is the world’s leading community of engaged investors. We’re the go-to destination for investors looking for actionable stock market opinions, real-time market analysis, and unique financial insights. At the same time, we’re also dedicated to creating a workplace where our team thrives. We’re passionate about fostering a flexible, balanced environment with remote work options and an array of perks that make a real difference.

Here, your growth matters. We prioritize your development through ongoing learning and career advancement opportunities, helping you reach new milestones. Join Seeking Alpha to be part of a company that values your unique journey, supports your success, and champions both your personal well-being and professional goals.

What We're Looking For

Role Overview: You will take ownership of the search infrastructure for Ask Seeking Alpha — a financial intelligence platform powered by LLMs. Your main goal is to ensure our AI agents can find the exact financial data they need (articles, transcripts, news) in milliseconds. You will work on the Retrieval layer of our RAG architecture, combining traditional text search with modern vector search techniques.

Tech Stack: Elasticsearch (v8+), Python (FastAPI, Asyncio), OpenAI Embeddings, LangChain, LangSmith.

What You'll Do
  • Search Engine Development: Design and implement Hybrid Search strategies. You will figure out how to best combine "keyword matching" (finding specific tickers like 'AAPL') with "semantic search" (finding concepts like 'revenue growth').
  • Relevance Tuning: You are responsible for the quality of search results. You will build systems to measure and improve how well the search engine answers user queries (using tools like LangSmith).
  • Vector Search & RAG: Manage the integration of OpenAI embeddings into Elasticsearch. You will solve challenges related to indexing long documents (e.g., earnings transcripts) so the AI retrieves only the most relevant parts.
  • Performance Optimization: Optimize Elasticsearch queries and index settings to ensure low latency, even for complex queries with many filters.
  • Python Backend: Develop and maintain the Python services that build queries and process results. We use FastAPI and Asyncio heavily.
Requirements
  • Elasticsearch Expert: 5+ years of experience working with Search Engines in production. You understand how indices, analyzers, and mappings work "under the hood."
  • Search Theory: You understand the difference between Lexical Search (keywords) and Vector Search (meaning), and know when to use which.
  • Python Proficiency: Strong experience with Python 3.10+. You are comfortable writing asynchronous code (async/await) and building APIs.
  • Data Engineering: Experience designing data schemas for search (how to structure JSON documents for efficient retrieval).

Nice to Have

  • Experience building RAG (Retrieval-Augmented Generation) pipelines.
  • Familiarity with LangChain or similar LLM frameworks.
  • Experience with Evaluation tools (like LangSmith) to test search quality automatically.
  • Background in Finance (understanding tickers, earnings calls, etc.).

Skills Required

  • 5+ years of production experience working with search engines, including Elasticsearch indices, analyzers, and mappings
  • Understanding of lexical search, vector search, and when to use each approach
  • Strong Python 3.10+ proficiency
  • Experience writing asynchronous Python code using async/await
  • Experience building APIs and Python backend services
  • Experience designing data schemas for efficient search and retrieval
  • Experience building Retrieval-Augmented Generation pipelines
  • Familiarity with LangChain or similar LLM frameworks
  • Experience with search or LLM evaluation tools such as LangSmith
  • Finance background, including familiarity with stock tickers and earnings calls
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The Company
HQ: New York, New York
914 Employees
Year Founded: 2005

What We Do

Founded in 2005, Seeking Alpha is an industry-leading financial research platform powered by one of the world’s largest investing communities. We bridge the gap between financial information and actionable insight by providing unrivaled coverage on all asset classes and access to best-in-class tools. From in-depth analysis on thousands of stocks to timely investment ideas and market-beating Quant ratings, Seeking Alpha is an essential resource for millions of investors globally. Any content and tools on the Seeking Alpha platform are offered for information purposes only. Seeking Alpha does not take account of individuals' objectives or financial situation and does not offer any personalized investment advice. Seeking Alpha is not a licensed securities dealer, broker or US investment adviser or investment bank

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