Staff iOS Software Engineer, Bitcoin

Bay Area, CA · US - CA - Bay Area - Remote · USD 263,600-395,400 · 4+ years experience · Remote · Posted Oct 6, 2026

At a glance

As a Staff iOS Engineer on Bitcoin at Block, you will own the technical direction and delivery of a critical area of our iOS product experience with bitcoin and stablecoin.
This is a hands-on role where you will prototype new ideas, make architectural decisions, write production code, and lead work through launch and ongoing improvement.

Build products in iOS related to bitcoin, stablecoin and non custodial wallets.
Work across interfaces in Cash App, Square and Bitkey.
Own complex features end to end, including client architecture, service integration, testing, rollout, and post-launch improvements.
Work with product and design to shape customer journeys, prototype new interactions, and turn open questions into delivery plans.
Build prototypes, reference implementations, and critical paths that prove a direction before broader adoption.
Contribute bitcoin and stablecoin technology to open source when it creates value for the broader community.
Influence the technical direction within the product area, making explicit tradeoffs and sequencing dependencies with adjacent teams.
Improve architecture and shared components where they make product development faster, safer, or more consistent.
Integrate AI-assisted development tools into daily workflows to drive leverage across bitcoin engineering.
Mentor engineers through design discussions, code reviews, and structured guidance that helps them take on greater ownership.

12+ years of professional software engineering experience, including 4+ years building native iOS products.
Deep experience building, shipping, and maintaining native iOS products using Swift and Apple frameworks.
Experience creating foundational systems, shared frameworks and tooling used widely on your team.
A record of leading strategic initiatives with broad adoption and durable impact.
Strong systems thinking, technical communication, mentoring, and organizational influence.

Experience working in large, modular iOS applications, including existing UIKit or Objective-C codebases.
Experience with build systems, continuous integration and delivery, testing infrastructure, observability, or mobile performance.
Experience supporting customer-facing or seller-facing products in financial services, commerce, or another high-trust environment.
Experience with experimentation infrastructure, feature flags, or large-scale product delivery.
Experience working with bitcoin, stablecoin and non custodial technologies.
A record of identifying and leading work that was not already on a team's roadmap.