# Founding Designer

**Company:** [Mosaic](https://hotfix.jobs/companies/mosaic)
**Location:** New York, NY
**Role:** Product Design
**Experience:** 4+ years
**Skills:** Figma, UI Design, Interaction Design, Design Systems, Prototyping, Information Architecture, UX Design, Typography, Fintech Design, B2B SaaS, AI Workflows, Spreadsheet Ui
**Posted:** 2026-01-20

> Founding Designer shapes Mosaic's AI-driven deal modeling platform from scratch, owning end-to-end design for complex financial workflows. Requires 4+ years experience, exceptional craft in UI/UX systems, and collaboration with product/engineering for high-trust experiences used by elite investors.

## Job Description

## 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)
- Excited to be hands-on, scrappy, and deeply embedded in the product

### Systems + UX Thinking
- Strong instincts for information architecture, complex workflows, and usability
- Ability to design products that support expert users and dense concepts

### Exceptional Craft
- High attention to detail across UI, interaction, typography, layout, and polish
- Ability to make complex software feel simple and calm

### Collaborative and Clear Communicator
- Comfortable working directly with engineers and shipping together
- Ability to explain decisions, iterate with feedback, and build alignment

### Customer-Obsessed Product Mindset
- Loves talking to users, watching workflows, and identifying what matters
- Can synthesize feedback into sharp product insights and design direction

**Bonus (Not Required)**
- Experience designing for fintech, B2B SaaS, or workflow-heavy products
- Familiarity with spreadsheet-like UI patterns and analytical tooling
- Comfort designing for AI-driven workflows (extraction, review, agents, automation)
- Some front-end fluency (you can speak dev, understand constraints, and move fast)

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