Senior UX Designer

F
FastnSaaS integration infrastructure
Source API remote eligibility restrictions: Argentina, Some overlap hours with Central Time US.Full-TimeSenior
Salary not disclosed
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Job Details

Languages
ENGLISH (MUST HAVE)
Experience
8 - 10+ years of UX design experience
Required Skills
FigmaPrototypingSaaS

Requirements

  • Have 8–10+ years of UX design experience, preferably in SaaS or complex web applications.
  • Have early-stage startup experience in the B2B space.
  • Provide a strong portfolio showing end-to-end design work and user-centered problem-solving.
  • Demonstrate expertise in Figma and modern design and prototyping tools.
  • Be able to translate technical requirements into intuitive interfaces.
  • Have experience conducting user research and usability testing.
  • Have experience with component-based design systems.
  • Be comfortable working cross-functionally with product and engineering teams.
  • Communicate and articulate design decisions clearly.

Responsibilities

  • Lead UX design across the Fastn platform, from user flows and wireframes to high-fidelity UI and prototypes.
  • Own and evolve Fastn’s design system to ensure consistency across touchpoints.
  • Design workflows for onboarding, integration setup, and feature adoption.
  • Conduct user research, usability testing, and interviews to validate and iterate on design decisions.
  • Build and test prototypes to gather feedback from internal stakeholders and customers.
  • Collaborate with product managers, engineers, and leadership to align designs with product goals.
  • Champion user-centered design and help establish UX best practices.
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