Abraham JeyarajGet in touch
Index · 2026 Open to engineering leadership roles

Engineering leadership for mobile & digital platforms.

Based inHoffman Estates, IL

I'm Abraham, an engineering leader focused on mobile platforms and enterprise architecture. At Photon, I led a 90-person cross-functional organization including engineering managers and individual contributors. At CVS Health, I managed three senior architects and architecture team budgets. Today I independently develop mobile and web applications.

60M
Overall Walgreens app downloads
90
Cross-functional organization
200+
Releases supported
3
Senior architects managed at CVS
01 · Expertise

Mobile platforms, architecture, and leadership.

Digital platforms

Platform strategy and enterprise architecture

  • Architecture strategy and governance
  • Enterprise mobile standards
  • Cross-functional technical direction
Mobile at scale

iOS & Android, architecture through delivery

  • Swift / Objective-C / SwiftUI
  • Kotlin / Java / Android
  • Clean Architecture · MVVM · VIPER
Full-stack & cloud

React, Node, TypeScript, AWS & Azure

  • TypeScript · React · Node.js
  • AWS · Azure · Microservices
  • OAuth 2.0 · Certificate pinning
Leadership

Architecture strategy, teams, enterprise delivery

  • Mobile platform architecture
  • Release management at scale
  • Patent co-inventor · US 10474400
02 · Selected Work

Mobile delivery and enterprise architecture.

2007 - 2021
Photon

Mobile platforms built for scale.

Progressed from Senior Technical Lead to Technical Architect, Director of Technology, and Associate Vice President. Led a 90-person cross-functional organization including engineering managers and individual contributors, and supported the Walgreens mobile program.

Downloads60M overall Walgreens app downloads
Releases200+ releases supported
Team90-person cross-functional organization
ContinuityIndia to US entity transfer, Aug 2013
Aug 2021 - Jan 2025
CVS Health

Leading mobile and digital architecture.

Led mobile and digital architecture strategy as Lead Director at CVS Health, managing senior architects and architecture team budgets.

RoleLead Director, Digital Architecture (Mobile)
TeamThree senior architects
ResponsibilityArchitecture team budgets
03 · Independent Projects

Continuing to build.

Since
2025
Focus
Mobile and web development

Independent Product Developer

I independently develop mobile and web applications.

04 · Writing

On AI safety, mobile, and the craft of shipping.

Jun 2026The Permission Wall Nobody Asked For: Claude for Chrome on FacebookTools & Workflow May 2026The Code You Forgot You Wrote: Hunting Dead Swift with PeripheryiOS Development May 2026Ollama Finally Has Competition: A Weekend with oMLXAI & Infrastructure Mar 2026CleanMyMac Is Going to Hate Me for Writing ThisDeveloper Tools Feb 2026Unlearn to Unlock: Getting the Most Out of AI in 2026AI & Innovation

See all 18 essays →

05 · CV

Career progression.

Download résumé · PDF
2025 - PresentIndependent Product DeveloperIndependent Projects
Aug 2021 - Jan 2025Lead Director, Digital Architecture (Mobile)CVS Health
2017 - 2021Associate Vice PresidentPhoton
2016 - 2017Director of TechnologyPhoton
2012 - 2016Technical ArchitectPhoton
2007 - 2012Senior Technical LeadPhoton

Continuous Photon employment, 2007-2021; transferred from the India entity to the US entity in August 2013.

  • Bachelor of Business Administration (BBA), Madurai Kamaraj University, 1996-1999.
  • Co-inventor, US 10474400: Systems and methods for uploading image files.

Let’s talk about engineering leadership and digital platforms.

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