Founding Product Designer – Senior/Staff

SignalFire

Founding Product Designer shaping intuitive digital products for SignalFire’s VC-backed startup portfolio. Defining UX, building design systems, and collaborating with founders, engineers, and product teams.

Posted 8/5/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $170,000 - $250,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in product design and user experience, with a strong focus on creating wireframes, prototypes, and high-fidelity UI designs for web and mobile applications. Proficient in building design systems and conducting user research to inform data-driven design decisions.

Highest-signal resume keywords

Product DesignUI/UX DesignFigma ProficiencyDesign System DevelopmentUser Research Methodologies

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

WireframingPrototypingHigh-Fidelity UI DesignUsability TestingA/B TestingInteraction DesignMotion DesignResponsive UI PrinciplesHTMLCSS

Soft Skills

CollaborationAdvocacy for Design Best Practices

Tools & Technologies

Adobe Creative SuiteFramerInVisionSketch

Industry Keywords

Human-Centered DesignEarly-Stage ProductsLean Product Teams

Tech Stack

Tools & technologies

InvisionJavaScript

About the role

Key responsibilities & impact

Define and own the end-to-end user experience and design language for early-stage products
Create wireframes, prototypes, and high-fidelity UI designs for web and mobile applications
Develop user research strategies to understand customer pain points and optimize design decisions
Collaborate with founders, engineers, and product teams to align design with business objectives
Build and maintain design systems and reusable UI components for scalability
Conduct usability testing, A/B testing, and iterative improvements based on data and user feedback
Advocate for design best practices, accessibility, and human-centered design principles
Submit an application to join SignalFire’s Talent Ecosystem
SignalFire reviews applications on an ongoing basis and may connect matched candidates with portfolio companies
SignalFire keeps profiles on file for future product design roles

Requirements

What you’ll need

3+ years of experience in product design, UI/UX, or visual design for web and mobile applications
Strong proficiency with Figma, Sketch, Adobe Creative Suite, and prototyping tools such as Framer and InVision
Experience building and scaling design systems from scratch
Knowledge of user research methodologies, usability testing, and data-driven design decision-making
Understanding of interaction design, motion design, and responsive UI principles
Familiarity with front-end technologies including HTML, CSS, and basic JavaScript
Experience working with early-stage startups or lean product teams is a plus
Ability to shape design vision and user experience for new products
Ability to collaborate with engineers and product teams to translate ideas into compelling interfaces

Benefits

Comp & perks

Equity offered
Visibility into exclusive early-stage opportunities
Profile shared with SignalFire portfolio companies
Potential access to full-time, fractional/interim, or advisory opportunities
Global team and portfolio-company networking opportunities