Principal Design Engineer, Mobile (iOS)
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About Salesforce
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We're hiring a Principal Design Engineer to elevate the craft and explore what's possible within Slack's iOS experience. Slack is an app that is used by millions of people every day as a core part of getting their work done. This role sits at the intersection of design and engineering: you'll rapidly prototype directly in code to bring real life to nascent, half-formed concepts that need both technical and craft judgment to assess their viability and their ability to make what we ship better.
We’d love to find someone who not only is excited about this opportunity, but the unique modalities and possibilities of mobile experiences and how they can overlap and meaningfully differentiate from their desktop counterparts. We want someone who is an evangelist at heart and will thrive with the charter to elevate the design team’s awareness and abilities by bringing modern, agentic prototyping practices into how designers work in production iOS codebases.
We appreciate designers who think deeply, speak clearly, love collaboration and feedback, and have an excellent collection of animated gifs. At Slack, we have a positive, diverse, and encouraging culture. We look for people who are curious, inventive, and work to be a little better every single day!
What you’ll do:
Exploring nascent, ambiguous interaction and device capability concepts by prototyping directly in code, bringing both technical depth and design craft to ideas before they're fully considered. Turning "what ifs" into something people can feel and react to with tangible experiences in their hand.
Building a deep, current understanding of iOS platform capabilities (WidgetKit, App Intents, Live Activities, Shortcuts, etc.), rooting solutions in platform-native standards and interaction patterns by default. Knowing when and how to break from them to build something genuinely bespoke.
Acting as a skill multiplier for the broader design org. Conducting training and documenting agentic prototyping workflows so designers themselves can prototype directly in mobile codebases, not just hand off static specs.
Creating reusable patterns for interactions and prototyping tooling that raise the craft ceiling for every team working in the iOS app, not just your own projects.
Partnering with designers and engineers across the org to inject technical and craft expertise wherever it's needed most. Coming to provide direct solutions for various team's current work, or providing creative / technical guidance around native solutions or custom approaches
Using data and shipped-feature learnings to sharpen judgment about which craft investments matter, and feeding that back into prototyping tools and documentation.
What we're looking for
8+ years at the intersection of product design and iOS engineering, with deep hands-on fluency in Swift/SwiftUI and Objective-C
A track record of building real, working prototypes in code to explore ambiguous concepts. Ideally showing how their execution had a direct correlation to impact and customer love
Deep, current knowledge of iOS platform standards and capabilities (Apple HIG, native frameworks), paired with the judgment to know when a bespoke, non-standard solution is worth building.
Experience creating tools, documentation, or training that help other designers and engineers level up their own craft, embodying a multiplier mindset over a "my feature" mindset.
Strong collaboration instincts. Demonstrating both proactive communications, working out in the open, and comfortable being pulled into ambiguous, cross-team problems rather than owning a dedicated backlog.
Familiarity with (or excitement about) agentic/AI-assisted coding tools, and interest in teaching design teams to use them to prototype directly in production codebases.
Excellent communication skills and the ability to evangelize new practices and get adoption across a design org, not just ship personal work.
Unleash Your Potential
When you join Salesforce, you’ll be limitless in all areas of your life. Our benefits and resources support you to find balance andbe your best, and our AI agents accelerate your impact so you cando your best. Together, we’ll bring the power of Agentforce to organizations of all sizes and deliver amazing experiences that customers love. Apply today to not only shape the future - but to redefine what’s possible - for yourself, for AI, and the world.
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In the United States, compensation offered will be determined by factors such as location, job level, job-related knowledge, skills, and experience. Certain roles may be eligible for incentive compensation, equity, and benefits. Salesforce offers a variety of benefits to help you live well including: time off programs, medical, dental, vision, mental health support, paid parental leave, life and disability insurance, 401(k), and an employee stock purchasing program. More details about company benefits can be found at the following link: https://www.salesforcebenefits.com.Pursuant to the San Francisco Fair Chance Ordinance and the Los Angeles Fair Chance Initiative for Hiring, Salesforce will consider for employment qualified applicants with arrest and conviction records.At Salesforce, we believe in equitable compensation practices that reflect the dynamic nature of labor markets across various regions. The typical base salary range for this position is $171,200 - $273,000 annually. In select cities within the San Francisco and New York City metropolitan area, the base salary range for this role is $205,800 - $298,400 annually. The range represents base salary only, and does not include company bonus, incentive for sales roles, equity or benefits, as applicable.