Lead iOS Engineer · Charles Schwab

Danny Bolella

SwiftUI & Liquid Glass · 12+ Years Mobile · Shipping Since 2009

Building iOS at scale for the firms millions of people trust with their money.

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Danny Bolella

01By the numbers

A career measured in scale, speed, and reach.

Charles Schwab mobile

5.2M

users on Charles Schwab mobile · 111M monthly logins

Mobile delivery

9×

faster via agentic AI workflows — quarters of work shipped in weeks

Schwab–TDA merger

$9.57T

AUM integrated — largest brokerage merger in U.S. history

Leadership

8

engineers led across iOS teams

Current focus

Liquid
Glass

Leading systemic adoption of Apple's new design system at Charles Schwab

Shipping since

2009

Client-facing software since college co-op · 12+ years on iOS, Android, and Flutter

02What I do

Lead iOS Engineer at Charles Schwab, leading development across the firm's mobile apps. My current focus is the rollout of Apple's Liquid Glass design system across Charles Schwab's platforms, and engineering agentic AI workflows that have compressed quarters of mobile delivery into weeks. Coding since high school, shipping client-facing software since 2009 — twelve-plus years of that on mobile, across JP Morgan, TD Ameritrade, Syncro Medical, and Charles Schwab. SwiftUI evangelist by trade and by writing.

03Selected work

Four projects that shaped the last few years.

01 / Schwab · iOS

Liquid Glass adoption at scale.

Leading the technical roadmap for systemic adoption of Apple's Liquid Glass design system across Charles Schwab's mobile platforms — assessing feasibility, performance, and UX impact at the scale of millions of users.

02 / Schwab · AI

Agentic AI for mobile delivery.

Engineered agentic workflows across spec, implementation, and review. Compressed a three-quarter mobile roadmap into one month — 9× delivery speed, 50% fewer new issues, no compromise on code quality.

03 / Schwab · TD Ameritrade

Inside the Schwab–TDA integration.

Helped lead teams and projects through the largest brokerage integration in U.S. history ($9.57T AUM) — coordinating mobile work across two organizations and two distinct codebases as they merged into one.

04 / Schwab · Practice

SwiftUI as a primary framework.

Drove SwiftUI from emerging tech to the primary UI framework at Charles Schwab through internal teaching, working groups, weekly office hours, and reusable libraries. The practice that led to Captain SwiftUI started here.

04Writing & publications

  • Captain SwiftUI Newsletter · 2,000+ readers
    Technical newsletter on SwiftUI, architecture, and tooling for Apple developers.
    substack ↗
  • Swift Cookbook, Third Edition Co-author · Packt Publishing
    Co-authored cookbook covering modern Swift patterns and frameworks.
    2025
  • Swift Cookbook & SwiftUI Cookbook Technical reviewer · Packt Publishing
    Technical review across two editions of Packt's Swift / SwiftUI cookbooks.
    2021–2024

05Background

Shipping client-facing software since 2009.

  1. 2021 — present
    Charles Schwab Lead Software Engineer, iOS
    Current
  2. 2017 — 2021
    Syncro Medical Senior Software Engineer · Team Lead — iOS, Android, and Flutter apps for connected medical devices
  3. 2014 — 2017
    TD Ameritrade Developer · Scrum Master
  4. 2011 — 2014
    JP Morgan Chase Technology Analyst
  5. 2008 — 2012
    Stevens Institute of Technology B.S. Computer Science

06Contact

Let's talk shop.

Recruiters, engineering leaders, and folks building serious iOS — email lands directly. I read everything.

Email dbolella@gmail.com
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LinkedIn /in/danielbolella
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GitHub /dbolella
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Newsletter captainswiftui.substack.com
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