Kevin Armstrong

Product leader & iOS engineer focused on acquisition, retention, and consumer trust

Focus Area: iOS + eCommerce + payment systems + AI-assisted product ops

Explore Portfolio Read the Blog
Now Senior Product Sales Manager, SpaceX
Highlights 0.5MM Prime members, $13.2MM annual GMS
Scope 10 teams, 40+ engineers

MBA (Chicago Booth). Built iOS + payment systems across Amazon, Walgreens, and Capital One.

About Me

A living profile that blends iOS craftsmanship in the flywheel of analytics, product strategy, and growth.

Origin

Electrical engineer turned iOS developer and product leader. I like building systems that are delightful for customers and scalable for teams.

Interactive Resume Snapshot

Payment optimization and Prime expansion across 13 markets, plus AI workflows to streamline launches.

Interactive Portfolio

GoingVegan

GitHub

SwiftUI iOS app for discovering vegan recipes and finding vegan-friendly restaurants with map-based search and sign-in.

Built with SwiftUI, MapKit, and local persistence. Includes sign-in flows and reusable UI components.

Repo: github.com/SpikeyCoder/GoingVegan

PetSafe

GitHub

iOS app concept focused on monitoring pet copper values, tracking readings over time, and keeping history easy to review.

Product-focused tracking UI with a simple data model for inputs and history.

Repo: github.com/SpikeyCoder/PetSafe

Stormy-Travel-Time

GitHub

Objective-C iOS project exploring travel-time UX, with a lightweight interface for viewing and comparing trip estimates.

Early iOS prototype focused on a fast, glanceable experience.

Repo: github.com/SpikeyCoder/Stormy-Travel-Time

my_website

GitHub

The codebase for this portfolio: interactive projects, real-time blog publishing via Supabase, and an RSS radar pipeline.

Static GitHub Pages site with a terminal-inspired theme, admin-only publishing, and cached RSS content for instant loads.

Repo: github.com/SpikeyCoder/my_website

Prime Payment Optimization

Product

Led payment strategy that acquired 0.5MM Prime members and $13.2MM annual GMS across two markets.

Shipped bank-to-bank payments in Spain and scaled learnings across 13 markets using rapid MVPs and analytics-driven prioritization. See here.

AI-Powered Launch Workflow

AI

Simplified payment architecture and added AI workflows to accelerate documentation and launch prep.

Coordinated 10 teams and 40+ engineers to reduce time from conception to launch by 60%.

EU Prime Payment Switch Onboarding

Product

Redesigned the Amazon app onboarding flow for EU Prime members switching payments, boosting retention.

Paired UX clarity with real-time analytics to increase member retention by 30%. See here.

Walgreens Wallet

iOS

Engineered iOS and desktop wallet for 3MM users, delivering $13.7MM GMS.

Balanced privacy, speed, and A/B tested UX improvements to lift NPS and reduce support volume. See here.

Rx Locker Delivery

Systems

Built Rx locker delivery innovation at Walgreens, creating $3.5MM GMS and reducing pickup friction.

A/B tested pickup flows, optimized SMS architecture, and negotiated vendor savings.

Apply & Buy + Wallet Features

iOS

Launched Apply & Buy for 1MM in-store retail customers and built iOS wallet features that reduced call volume.

Combined credit decisioning UX with backend systems for real-time approvals and gift card reminders. See here.

Live Blog

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Let’s Build Something

Open to product-focused iOS roles, collaborations, and small bets on ambitious ideas. Say hello and share what you are building.

kevinarmstrong.io

Email: kevinmarmstrong1990@gmail.com

GitHub: SpikeyCoder