Senior UI Designer — Mentorship & Ownership Path

Slack; Lancaster (CA); On-site; USD 94,000 - 124,000; Full time

Job summary

Slack is hiring a UI Designer in Lancaster, CA. The role combines hands-on UI work with building scalable design systems and rigorous prototyping. You will collaborate with marketing, product, and editorial teams to shape experiences and mentor the next designer toward ownership.

Expect to grow a documented heuristic toolkit, craft precise specs, and deliver high-energy product walkthroughs. Slack emphasizes collaboration over heroics and believes in team success.

Qualifications

• 7+ years navigating creative politics and team dynamics.
• 5+ years in a UI Designer role with proven collaboration.
• Experience prototyping and evolving design systems.

Responsibilities

• Collaborate with marketing, product, and editorial teams in Lancaster.
• Grow a Heuristic Evaluation toolkit into a documented system.
• Guide product walkthroughs to land key moments effectively.
• Set typographic rhythm to unite a 3D Modeling library.
• Hand engineer specs to match the mock precisely.
• Leave a documented trail for future designers.

Skills

UI Prototyping

Atomic Design

Cross-functional collaboration

Effective communication

UI Design

Documentation

Tools

Heuristic Evaluation

Job description

Slack is hiring a UI Designer in Lancaster, CA. The role combines hands-on UI work with building scalable design systems and rigorous prototyping. You will collaborate with marketing, product, and editorial teams to shape experiences and mentor the next designer toward ownership.

Expect to grow a documented heuristic toolkit, craft precise specs, and deliver high-energy product walkthroughs. Slack emphasizes collaboration over heroics and believes in team success.