Senior / Staff AI Model Engineer

We need to output HTML fragment with sections: About the role? The posting includes description of company, team, role, tech stack, requirements, bonus, we offer (benefits, salary). We need to use

for section headings like About the role, Responsibilities, Requirements, Qualifications, Skills, Benefits, Pay, Schedule. We need to decide which sections have content. We have: - About the role: maybe the description of role (the bullet list under "The Role:"). - Responsibilities: could be same as role description; but we need to avoid duplication. The instruction: "use

for section headings (e.g. About the role, Responsibilities, Requirements, Qualifications, Skills, Benefits, Pay, Schedule)". We need to include a section only when posting has real, specific content for it. So we need to map content. We have: - Company description (Clear Street modernizing...). Could be "About the company" but not in list. Could be omitted or put under "About the role"? Probably not. - The Team: description of Active team. - The Role: bullet list of responsibilities. - Tech Stack: list of technologies. - Requirements: list of requirements. - Bonus: list of bonus qualifications. - We Offer: includes salary range, benefits, etc. Thus we can create sections:

About the Team

maybe not in allowed headings but we can use "About the role" for role description, "Responsibilities" maybe same as role bullet list. But we need to avoid duplication. Better: Use "About the role" for the role overview (the paragraph before bullet list? Actually "The Role:" then bullet list). Use "Responsibilities" for bullet list of duties. Use "Requirements" for the requirements list. Use "Skills" maybe for tech stack? Or "Qualifications" for bonus? But we need to follow allowed headings. We can decide: -

About the role

: paragraph describing role (own reliability and quality bar for AI copilot, etc.) maybe the first sentence before bullet list. -

Responsibilities

: the bullet list under "The Role:" (the bullet points starting with "You will own..."). -

Tech Stack

: not in allowed headings but we could treat as "Skills" maybe. However allowed headings include Skills. So we can put tech stack under

Skills

. -

Requirements

: the list under "Requirements:". -

Qualifications

: the bonus list under "Bonus:". -

Benefits

: from "We Offer:" includes benefits like equity, 401k matching, parental leave, medical/dental/vision, lunch stipends, etc. -

Pay

: salary range. We should not include Schedule as not present. We must not repeat job title as heading. Not include Job ID etc. We must remove boilerplate: EEO, equal opportunity, etc. At end there is "We are proud to be an equal opportunity employer..." that's boilerplate; remove. Also remove "Our top priority is our people..." maybe not boilerplate but could be considered fluff; but it's substantive about culture; we can keep maybe under Benefits? But it's not a benefit; maybe we can keep as part of Benefits or a separate section? Not in allowed headings; we could omit. We need to preserve all substantive information; do not invent or summarize away detail. So we need to keep the bullet points exactly as given, but we can rephrase? The instruction: "Preserve ALL substantive information; do NOT invent or summarize away detail." Means we should not omit details, but we can keep them as is. We can copy the bullet points. We need to output only HTML fragment, no markdown fences. Let's extract content. Company description: "Clear Street is modernizing the brokerage ecosystem. Founded in 2018, Clear Street is a diversified financial services firm replacing the legacy infrastructure used across capital markets. We started from scratch by building a completely cloud-native clearing and custody system designed for today's complex, global market. Our platform is fully integrated with central clearing houses and exchanges to support billions in trading volume per day. We've agonized about our data model abstractions, created horizontal scalability, and crafted thoughtful APIs. All so we can provide a best-in-class experience for our clients. By combining highly-skilled product and engineering talent with seasoned finance professionals, we're building the essentials to compete in today's fast-paced markets." Team: "The Team: 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." Role overview: "The Role: You will own the reliability and quality bar for an AI copilot embedded in an trading platform used by sophisticated investors" Then bullet list: - You will design and build evaluation systems that measure correctness, safety, latency, and regression risk across market analysis, portfolio/risk reasoning, and trading workflows (including order placement) - You will develop and maintain benchmarks: curated “golden sets,” scenario suites, stress/adversarial cases, and continuously refreshed market/regime-based test corpora - You will build automated quality gates and regression workflows that block releases when key metrics degrade - You will partner with engineering and product to define safe tool/action contracts (deterministic previews, confirmations, auditability) and ensure predictable assistant behavior - You will own model improvement loops tied to evals: data collection/labeling strategies, error taxonomy, prompt/tooling changes, and when appropriate, fine-tuning or preference optimization to measurably improve benchmark performance - You will design and operate monitoring + incident response for AI: telemetry, alerting, RCA, and “fix-forward” processes - You will develop a deep understanding of trading concepts (margin, shorting, portfolio margin, risk, execution) and how to express them accurately and understandably to users Tech Stack: "Tech Stack: Rust, TypeScript, Postgres, React (Web), React Native (Mobile), observability/telemetry tooling, LLM APIs + model serving, eval/training pipelines" Requirements: list: - At least Eight (8) years of experience shipping production software; strong proficiency with any programming language - Strong knowledge of computer science fundamentals, testing methodology, and systems design - Experience building evaluation frameworks, test harnesses, and benchmark suites for complex systems (LLMs/agents/search/retrieval/ranking/recommenders) - Experience running model improvement cycles: dataset curation, labeling/QA, offline experimentation, and deploying changes with measurable impact on benchmarks - Ability to define metrics, build measurement pipelines, and drive engineering/product decisions from data - Comfort working across the stack: debugging model/tooling failures, instrumenting services, and partnering with frontend/product on UX patterns that improve safety and trust - High degree of self-motivation and willingness to jump into unfamiliar areas to solve problems Bonus: - Experience with fine-tuning, preference optimization, distillation, or prompt/compiler-style techniques for improving tool-use reliability - Experience creating domain-specific benchmarks and adversarial suites (e.g., “known-bad” scenarios) for high-stakes applications - Deep experience with trading across asset classes, margin types, etc. - Experience with Rust and performance-sensitive services - Experience designing incident response and SLOs for ML/AI systems We Offer: - The Base Salary Range for this role is $200,000 - $500,000. This range is representative of the starting base salaries for this role at Clear Street. Where a candidate falls in this range will be based on job related factors such as relevant experience, skills, and location. This range represents Base Salary only, which is just one element of Clear Street's total compensation. The range stated does not include other factors of total compensation such as bonuses or equity. - At Clear Street, we offer 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. - Our top priority is our people. We're continuously investing in a culture that promotes collaboration. We help each other through challenges and celebrate each other's successes. - We believe that modern workplaces succeed by virtue of having high-performance workforces that are diverse — in ideas, in cultures, and in experiences. - We are proud to be an equal opportunity employer and put in the effort to make such a workplace a daily reality. (remove EEO boilerplate) We need to remove EEO line. Also maybe remove the last sentence about equal opportunity. Also maybe remove "Our top priority is our people..."? It's not boilerplate but could be considered fluff; but it's substantive about culture; we can keep. We need to avoid duplication: The role overview sentence maybe duplicates with responsibilities bullet list; but we can keep both. Now produce HTML. Structure:

About the role

The Role: You will own the reliability and quality bar for an AI copilot embedded in an trading platform used by sophisticated investors

Responsibilities

• You will design and build evaluation systems that measure correctness, safety, latency, and regression risk across market analysis, portfolio/risk reasoning, and trading workflows (including order placement)
• You will develop and maintain benchmarks: curated “golden sets,” scenario suites, stress/adversarial cases, and continuously refreshed market/regime-based test corpora
• You will build automated quality gates and regression workflows that block releases when key metrics degrade
• You will partner with engineering and product to define safe tool/action contracts (deterministic previews, confirmations, auditability) and ensure predictable assistant behavior
• You will own model improvement loops tied to evals: data collection/labeling strategies, error taxonomy, prompt/tooling changes, and when appropriate, fine-tuning or preference optimization to measurably improve benchmark performance
• You will design and operate monitoring + incident response for AI: telemetry, alerting, RCA, and “fix-forward” processes
• You will develop a deep understanding of trading concepts (margin, shorting, portfolio margin, risk, execution) and how to express them accurately and understandably to users

Maybe also include Team description under About the role? Could add a paragraph before responsibilities: The Team description. But we have no heading for Team; we could incorporate into About the role section as a paragraph. Thus About the role could contain two paragraphs: company description? Actually company description is about Clear Street, not role. Could be separate section "About the company" but not allowed. Could omit? But we need to preserve ALL substantive information; we cannot omit company description. So we need to include it somewhere. Perhaps under

About the role

we can include a paragraph about the company and team. But the heading "About the role" might be misleading. However we have no other heading for company info. Could we use

About the role

for company+team+role overview? The instruction says use

for section headings (e.g. About the role, Responsibilities, Requirements, Qualifications, Skills, Benefits, Pay, Schedule). It doesn't forbid using About the role for company info; but it's about the role. However we could also add a separate

About the company

but not in list; but maybe we can still use it? The instruction says "use

for section headings (e.g. About the role, Responsibilities, Requirements, Qualifications, Skills, Benefits, Pay, Schedule)". The "e