IOS / Swift Software Engineer (Staff, Principal, Lead)

Sadient; San Francisco (CA); On-site; USD 300,000 - 380,000; Full time

Benefits offered by this job

Cash compensation $200K-$400K

Day 1 impact on partner products

Shape technical vision

Own major parts

Ship fast

Job summary

Sadient is seeking a Staff/Principal/Lead iOS engineer to lead mobile client development in San Francisco. The role emphasizes native Swift, high performance, secure apps, and cross-team collaboration.

You will architect the iOS stack, set engineering standards, and may advance to mobile engineering lead as the team grows. Five+ years in consumer-facing iOS apps required; in-office in San Francisco with relocation options.

Qualifications

• Five plus years of experience building and shipping consumer-facing iOS applications.
• Strong expertise in native iOS development using Swift.

Responsibilities

• Lead mobile client development for iOS.
• Architect the iOS stack and establish engineering standards.
• Collaborate across backend and frontend teams as the product scales.

Skills

Mobile Development

iOS Development

Swift

Job description

IOS / Swift Software Engineer (Staff, Principal, Lead)

San Francisco, United States | Posted on 08/10/2026

IOS Swift Software Engineer Staff Principal Lead

Compensation:300k to 380k USD No equity

Experience Required:5 plus years

Employment Type: Full Time

Job Location: San Francisco

Work Model: In-office

Relocation: Allowed

Skills Required: Mobile Development, iOS Development, Swift

About the Job

Our client is building a global consumer neobank. We're merging international banking and payments into a single product. Our mission is to enable all of our customers around the world to spend, save and earn in USD. We'll be starting the US and select international markets with ambitions to scale far beyond.

Our Client built by a small group of highly experienced operators and engineers. We're a small, senior-only team, with no layers, politics, or slow decisions. We've built, founded, and owned services used by hundreds of millions of people and generating billions in revenue. Green is the next step and mass distribution is readily available via our day-one partners. Every person on the team ships product and shapes the direction of the company.

Role Overview

We are seeking a Staff iOS Engineer to lead mobile client development. The product will also include Android and mobile friendly web applications, creating opportunities to expand impact across platforms.

You will architect the iOS stack, establish engineering standards, and build a high performance, reliable, and secure application from the ground up. This role may evolve into a mobile engineering lead position as the team scales.

Requirements

• Five plus years of experience building and shipping consumer-facing iOS applications
• Strong expertise in native iOS development using Swift

Bonus Qualifications

• Experience building applications for Latin American markets
• Experience in financial technology
• Full stack engineering experience with the ability to collaborate across backend and frontend teams

What We Offer

• $200K-$400K cash compensation
• Day 1 impact on partner products used by millions globally
• Shape technical vision and architecture as we scale
• Own major parts of the product and infrastructure
• Ship fast and avoid corporate overhead