Senior / Staff AI Platform Engineer

Role Description

The mission of the Clear Street Active team is to provide best execution for every asset class in every market. Active is currently building a new, state-of-the-art, cloud-based trading platform providing high-performance traders access to liquidity venues across multiple asset classes, cutting-edge charting capabilities, and sophisticated order handling with the flexibility to service both the active trader and institutional workflows.

• You will build the core AI platform that powers a copilot inside a new, AI-native trading experience.
• You will develop a high-performance backend in Rust that supports streaming responses, low-latency tool execution, caching, and reliable orchestration of model + tools.
• You will design robust APIs and runtime components for AI capabilities: authentication/authorization, rate limits, auditing, tracing, retries, and fallbacks.
• You will build safe action infrastructure for trading workflows: deterministic order previews, confirmation flows, idempotent tool calls, and comprehensive audit logs.
• You will partner with product and frontend to enable great AI-native UX patterns (streaming, citations/grounding, “why” explanations, reversible actions).
• You will develop a deep understanding of the business domain and help translate it into secure, resilient platform primitives.

Qualifications

• At least Eight (8) years of experience and strong proficiency with any programming language.
• Strong knowledge of systems programming fundamentals: concurrency, networking, performance profiling, reliability, and distributed systems patterns.
• Experience designing and operating production APIs/services with strong observability, correctness guarantees, and security considerations.
• Ability to work with stakeholders to define platform requirements, design the architecture, and deliver it end-to-end.
• High degree of self-motivation and willingness to jump into unfamiliar areas to solve problems.

Requirements

• Strong Rust experience in production (Tokio/async, service design, performance tuning).
• Experience building platforms for AI/ML inference, tool execution, streaming, or retrieval/grounding systems.
• Experience in trading systems (order lifecycle, execution, risk checks, auditability) or other mission-critical financial infrastructure.
• Deep experience with trading across asset classes, margin types, etc.
• Experience with Postgres performance and data modeling in high-throughput systems.

Benefits

• The Base Salary Range for this role is $200,000 - $350,000.
• Competitive compensation packages, company equity, 401k matching, gender neutral parental leave, and full medical, dental and vision insurance.
• In-office benefits include lunch stipends, fully stocked kitchens, happy hours, a great location, and amazing views.
• Continuous investment in a culture that promotes collaboration.
• Commitment to diversity in ideas, cultures, and experiences.