Mobile Design Engineer, iOS - React Native

Slash Financial

San Francisco , California, United States permanent

Posted: January 5, 2026

Required Skills

Job Description

About Slash

Slash is building the future of business banking, one industry at a time. We believe businesses deserve financial infrastructure tailored to how they actually operate. That's why we're creating a new category of business banking. We combine the reliability of traditional banking (high yields, competitive rewards, and comprehensive security) with industry-specific features that make businesses more efficient, more competitive, and more profitable.

Started in 2021, Slash is one of the fastest growing fintechs in the world and we power over three billion dollars a year in business purchasing across numerous industries. We're backed by some of the best investors in the world including Menlo Ventures, NEA, Y Combinator, Stanford University, and the founders of Tinder and Plaid. Slash is headquartered in San Francisco, and has a strong in-person culture.

About the role

Slash is, at its core, a technology company and is on a mission to build the best engineering team in the world. We’re looking for an iOS/Mobile Design Engineer to own the front-end experience of our product — from how it looks to how it feels, and how it’s built under the hood.

You’ll be responsible for building fast, high-quality interfaces that bring complex financial workflows to life with clarity and precision. That means crafting smooth interactions, creating well-structured component systems, and collaborating closely with designers to get the details right.

What you’ll be doing:

• You will be the primary directly responsible individual for Slash's iOS app. You'll set the bar for quality, and be responsible for everything iOS related.

• Engineer and maintain our frontend infrastructure for React Native and iOS — everything from design systems to data management to performance

• Foster and lead a culture of craft — you’ll be setting the standards for our UI and UX across the board.

We’re looking for someone who:

• Is thorough and obsesses over the tiniest of details

• Has maintained and shipped products to the iOS app store before.

• Has a great sense of design — can think through product flows that make sense while making sure the UI looks and feels amazing

• Can ship high quality and performant code that scales as the frontend grows and more complexity is added.

What's in it for You:

• Opportunity for high growth

• High autonomy + ownership culture

• Comprehensive health + benefits plan

• Working out of our downtown San Francisco office space

• Unlimited Vacation

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