Senior / Staff AI Platform Engineer

1 month, 3 weeks ago
Full-time
Lead
Software Development
Clear Street

Clear Street

Clear Street is a financial technology and brokerage company based in New York, founded in 2018. It modernizes capital markets infrastructure with a cloud-native, end-to-end prime brokerage platform designed for sophisticated investors and institutions. The company aims to provide access to every asset in every market through a unified platform that emphasizes speed, transparency, and scalability. Clear Street operates without legacy systems, offering efficient access to clearing, settlement, custody, and financing services. It processes over $10–$15 billion in daily trading volume and clears about 2.5% of the U.S. equity market. The company has grown to approximately 501–1,000 employees across five global offices, including locations in Chicago and London. Its services include a proprietary prime brokerage platform, support for U.S. equities and options, and a trading app launched in 2026 for sophisticated individual investors. Clear Street serves a diverse clientele, including hedge funds, family offices, and professional traders, while expanding access to individual investors.

financial services
501-1000
Founded 2018

Description

  • Build the core AI platform that powers a copilot inside an AI-native trading experience.
  • Develop a high-performance Rust backend for streaming responses, low-latency tool execution, caching, and orchestration of model and tools.
  • Design APIs and runtime components for AI features including authentication, authorization, rate limits, auditing, tracing, retries, and fallbacks.
  • Build safe action infrastructure for trading workflows, including order previews, confirmation flows, idempotent tool calls, and audit logs.
  • Partner with product and frontend teams to support AI-native UX patterns such as streaming, citations, explanations, and reversible actions.
  • Translate business domain needs into secure and resilient platform primitives.
  • Work across the stack as needed to deliver platform capabilities end to end.

Requirements

  • At least 8 years of experience and strong proficiency with any programming language.
  • Strong knowledge of systems programming fundamentals, including concurrency, networking, performance profiling, reliability, and distributed systems patterns.
  • Experience designing and operating production APIs and services with strong observability, correctness guarantees, and security considerations.
  • Ability to work with stakeholders to define platform requirements, design architecture, and deliver solutions end to end.
  • High degree of self-motivation and willingness to work in unfamiliar areas to solve problems.
  • Strong Rust experience in production, including Tokio/async, service design, and performance tuning (bonus).
  • Experience building platforms for AI/ML inference, tool execution, streaming, or retrieval/grounding systems (bonus).
  • Experience in trading systems or other mission-critical financial infrastructure, including order lifecycle, execution, risk checks, and auditability (bonus).
  • Deep experience with trading across asset classes and margin types (bonus).
  • Experience with Postgres performance and data modeling in high-throughput systems (bonus).

Benefits

  • Base salary range of $200,000 to $350,000.
  • Competitive compensation packages with bonuses and equity.
  • Company equity and 401(k) matching.
  • Full medical, dental, and vision insurance.
  • Gender-neutral parental leave.
  • In-office benefits including lunch stipends, fully stocked kitchens, happy hours, a great location, and views.
  • Remote-friendly arrangement (#LI-Remote).

Interested in this position?

Apply directly on the company website

Apply Now

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