Chief of Staff

Job Description:

Location: New York City (NoHo) – In Person

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Type: Full Time

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About

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Onyx is a fast-growing, venture-backed social sports prediction platform. As user activity has scaled quickly, we’re expanding the team to support platform discrepancies and day-to-day operations.

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Founded by Harvard graduates with a background at Jane Street, Onyx is headquartered in downtown Manhattan. This role is in-office.

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Role Overview

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We are seeking a highly organized, strategic, and execution-focused Chief of Staff to work directly alongside the CEO on high-priority initiatives across the company. This role will serve as a key strategic and operational partner to the CEO, helping drive cross-functional alignment, improve internal processes, and ensure critical initiatives move efficiently from concept to execution.

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The ideal candidate is proactive, analytical, adaptable, and thrives in fast-paced startup environments where priorities evolve quickly. This person will operate as a trusted partner to the CEO, helping manage organizational priorities, streamline communication, and support decision-making across the business.

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Key Responsibilities

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• Partner directly with the CEO to drive strategic initiatives and company-wide operational priorities
• Act as an extension of the CEO to improve communication, alignment, and execution across departments
• Manage and coordinate cross-functional projects across product, engineering, operations, marketing, analytics, and business development teams
• Track company goals, strategic initiatives, and KPIs to ensure accountability and progress across the organization
• Prepare reports, presentations, briefing materials, and updates for leadership meetings, investors, and external stakeholders
• Identify operational inefficiencies and implement scalable systems and processes to improve execution and communication
• Support hiring, onboarding, recruiting coordination, and broader organizational initiatives as the company continues to scale
• Assist the CEO with special projects, partnerships, and other high-impact business initiatives as needed
• Help maintain organizational focus and ensure CEO priorities are clearly communicated and effectively executed

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Requirements

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• 3+ years of experience in consulting, operations, project management, strategy, startup operations, investment banking, or a related field
• Strong organizational and project management skills with exceptional attention to detail
• Excellent communication and interpersonal skills
• Ability to manage multiple priorities and operate effectively in a fast-paced environment
• Highly analytical with strong problem-solving capabilities
• Comfortable working cross-functionally with both technical and non-technical teams
• High level of professionalism, discretion, and sound judgment
• Experience at a startup, technology company, sports company, or high-growth environment is strongly preferred
• Interest in sports analytics, predictive technology, or sports media is a plus

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What We Offer

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• Competitive salary and performance-based incentives
• Opportunity to work directly with company leadership on high-impact initiatives
• Significant growth opportunities within a rapidly expanding company
• Collaborative, entrepreneurial, and fast-moving team culture
• Exposure to cutting-edge sports data and predictive technology

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Location

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This role is based full-time in our NoHo office in New York City and is in person.

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Please note: We do not offer employment visa sponsorship for this position.

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Compensation

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100,000 – 180,000 USD, based on experience and qualifications.