Mike Maguire, Developer in Chicago, IL, United States
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Mike Maguire

Verified Expert  in Engineering

iOS and Firebase Developer

Location
Chicago, IL, United States
Toptal Member Since
November 25, 2020

Mike began his career at Microsoft as a program manager on the Xbox Live team. He went on to pursue a mobile app startup, UpnUp, and then moved into fintech. His first role was as a Lead iOS developer at BLUECHXP, a stock market app for which he was the sole developer and built the app from scratch. He is currently a senior iOS developer for M1 Finance, a mid-stage startup. In addition to a breadth of hands-on experience, Mike has a bachelor's degree in computer science.

MacOSSQLSwiftTypeScriptNode.jsFirebaseiOSBigQueryExpress.jsPythonC#

Portfolio

M1 Finance
Swift
BLUECHXP
iOS, Swift, Firebase Realtime Database, Firebase Cloud Functions, Firebase...
UpnUp
iOS, Swift, TypeScript, Node.js, Express.js, Firebase, Firebase Cloud Functions...

Experience

SQL - 7 yearsTypeScript - 6 yearsNode.js - 6 yearsiOS - 6 yearsBigQuery - 6 yearsFirebase - 6 yearsFirebase Cloud Functions - 6 yearsSwift - 6 years

Availability

Part-time

Preferred Environment

MacOS

The most amazing...

...thing about my career is the breadth of my experience—from being a sole developer at a startup to a program manager at Microsoft.

Work Experience

Senior iOS Developer

2019 - PRESENT
M1 Finance
  • Refactored outdated code into reusable components and modularized the project organization.
  • Spearheaded and implemented a new client analytics pipeline.
  • Implemented new features, created new components, and fixed bugs.
  • Collected and analyzed over 10 million daily client events in BigQuery.
Technologies: Swift

Lead iOS Developer

2017 - 2019
BLUECHXP
  • Completely rebuilt the v2 of a two-and-a-half-year-old iOS app (front and back end) in four months.
  • Ran SQL query analyses on 3,000+ v1 users’ data to inform v2 design decisions.
  • Reduced operational cost by 85% by architecting and optimizing the app for Firebase.
Technologies: iOS, Swift, Firebase Realtime Database, Firebase Cloud Functions, Firebase, Express.js, Node.js, TypeScript

Lead iOS Developer

2016 - 2017
UpnUp
  • Designed and developed a group social app for iOS.
  • Integrated the app with Google’s Firebase BaaS and Facebook’s Graph API.
  • Managed the planning and execution of release cycles and user feedback.
Technologies: iOS, Swift, TypeScript, Node.js, Express.js, Firebase, Firebase Cloud Functions, Firebase Realtime Database

Program Manager

2015 - 2017
Microsoft | Xbox Live
  • Directed the project to integrate Xbox Live (XBL) with non-XBL PC titles.
  • Wrote Python scripts to scrape, format, and supply valuable data for the title integration project.
  • Discovered, formalized, and executed a business opportunity with third-party data providers.
Technologies: C#, Python

BLUECHXP

A Swift-based project for simulated, gamified stock market trading. I developed the v2 of this app from the ground up, using the Firebase Realtime Database and Firebase Cloud Functions as the back end to support very real-time trading simulations using real market data. The application integrated with third-party data providers and involved a subscription business model for advanced features.

Languages

Swift, TypeScript, SQL, Python, C#

Libraries/APIs

Node.js, Firebase iOS SDK

Tools

Firebase Analytics, BigQuery

Platforms

MacOS, Firebase, iOS

Storage

Firebase Realtime Database, Cloud Firestore

Other

Firebase Cloud Functions, Google BigQuery, Computer Science

Frameworks

Express.js

2010 - 2015

Bachelor's Degree in Computer Science

University of Illinois at Urbana-Champaign - Champaign, IL, USA