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Founding Designer

Mosaic
CompanyMosaic
CategoryDesign
LocationNew York City
RemoteOn-site (inferred)
EmploymentNot stated
LevelNot stated
SalaryNot stated by the employer
Posted20 Jan 2026
Last verified30 Jul 2026
SourceEmployer career page (ashby)
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Description
About Mosaic Mosaic is the AI-driven deal modeling platform for private markets, used by leading investors and advisors including Warburg Pincus, CVC, New Mountain, and Evercore. Mosaic automates and standardizes core deal analyses—such as LBOs and DCFs—so investment teams can move faster, reduce spreadsheet risk, and spend more time on investment judgment. Mosaic’s platform combines deterministic, rules-based calculations with AI-powered ingestion and agentic workflows to generate replicable, audit-ready outputs that private equity, private credit, and investment banking teams can trust across billion-dollar deals. Mosaic is on a mission to build the AI-driven operating system for the world’s most sophisticated investors and their advisors. We’re growing quickly and are hiring across engineering, product, customer enablement, and go-to-market teams. For those excited to sit at the intersection of high finance and technology, Mosaic offers a rare opportunity to shape how the industry operates for decades to come. Read more about our story: - Bloomberg https://www.bloomberg.com/news/articles/2024-09-16/startup-touts-automated-deal-modeling-tool-aimed-at-overworked-junior-bankers?embedded-checkout=true - Financial Times https://www.ft.com/content/8c76fefd-dae4-41a9-b963-1a118a29f011 - NY Post https://nypost.com/2025/01/09/business/this-startup-could-be-the-end-of-wall-street-all-nighters/ About the Role Mosaic is hiring a Founding Designer to shape the product experience from the ground up. This is a high-ownership role for someone who wants to define design at a company building software for some of the most sophisticated decision-makers in the world. You’ll work directly with product and engineering leadership to create an intuitive, high-trust platform that transforms how deals get analyzed, reviewed, and executed. Private market investing runs on spreadsheets, documents, and legacy workflows—and Mosaic is building the next generation of tooling: AI-powered, auditable, and built for speed. As Founding Designer, you’ll turn complex workflows into simple, elegant experiences and establish Mosaic’s design principles, systems, and craft bar. You’ll be involved across the full lifecycle: customer discovery, workflow design, prototyping, UI systems, interaction design, and shipping product alongside engineers. The scope is broad, the pace is high, and your work will define how Mosaic feels for years to come. Key Responsibilities OWN DESIGN END-TO-END - Lead design for key product areas from early discovery through launch - Translate messy real-world workflows into clear, intuitive product flows - Produce high-quality UI and interaction design for core surfaces BUILD A HIGH-TRUST, HIGH-PERFORMANCE PRODUCT EXPERIENCE - Design experiences that feel fast, precise, and dependable - Create interfaces that support accuracy, auditability, and confidence - Design for power users who live in tools all day (bankers, investors, and deal teams) DEVELOP MOSAIC’S DESIGN SYSTEM & VISUAL LANGUAGE - Establish foundational components, patterns, and UX principles - Drive consistency across the product while keeping velocity high - Raise the bar on craft, clarity, and usability across everything we ship PARTNER CROSS-FUNCTIONALLY AND INFLUENCE THE ROADMAP - Collaborate closely with product, engineering, and GTM teams - Bring customer insight into product decisions and prioritization - Use prototypes to explore directions, align stakeholders, and move quickly BE A BUILDER IN A FAST-GROWING STARTUP - Operate with high autonomy and ownership in an unstructured environment - Move quickly and iteratively—shipping, learning, refining - Help define how design works at Mosaic: process, tools, rituals, and culture Who We’re Looking For STRONG PRODUCT DESIGNER WITH FOUNDER-LEVEL OWNERSHIP - 4+ years of product design experience (or equivalent craft + portfolio) - Exci
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