Senior Android Engineer • 10+ Years Exp

Jordan L Araujo Jr Building High-Performance Mobile Experiences at Scale

Specializing in Kotlin Multiplatform, Jetpack Compose, and Scalable Architecture. Currently building field service technology at ServiceTitan and crafting web experiences for clients worldwide.

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Kotlin Compose KMP JavaScript TypeScript HTML CSS Python
Profile
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Apps Showcase

A selection of apps and teams that I've worked on.

ServiceTitan Field
Role: Senior Android Engineer

ServiceTitan Field

Building the next-gen field service mobile app for technicians across trades.

Ground-up rebuild of the native Android experience for field technicians in HVAC, plumbing, electrical, and more — with real-time office-to-field sync and an almost crash-free experience.

Implemented offline-first architecture, AI integrations, digital forms, pricebook management, mobile payments, and GPS routing for a complete field service workflow.

Kotlin Compose Offline-First Real-Time Sync GPS AI
Instacart
Role: Android Engineer

Instacart

Scaling the customer-facing app with robust architecture.

Worked on the customer app with massive codebase requiring stability and speed for distributed teams.

Worked with MVU architecture, Dagger, and comprehensive Snapshot testing (Paparazzi).

Maintained legacy code with modern architecture and ensured quality at scale.

Assisted multiple teams on different projects and squads.

Kotlin Compose GraphQL MVU Dagger Paparazzi
Neo Financial
Role: Senior Android Dev

Neo Financial

Building a high-performance investment dashboard for millions of users.

Worked on banking app on Investment dashboard with complex financial data in real-time graphs visualization on mobile.

Create a fluid, interactive charting interface.

Leveraged Jetpack Compose with native Canvas drawing commands and optimized recomposition scopes.

Improved Gradle project modularization to drastically reduce build times on both local and CI/CD pipelines.

Kotlin MVVM Compose Canvas Koin Sentry GraphQL Bitrise
Remitbee
Role: Lead Android Dev

Remitbee Money Transfer

Redesigning architecture for banking-grade security.

Built MVP app architecture with modern architecture and great performance.

Worked on banking-grade security and reliable transfers for a growing user base.

Used Jenkins/Fastlane pipelines, Kotlin and a custom made E2E testing approach.

Successful Google Play launch, intern mentorship, and community open-source contributions.

Kotlin Security Jenkins Fastlane GraphQL

Web Development

Recent client websites I've designed and shipped.

American Tile Innovation
Role: Web Developer

American Tile Innovation

Marketing site for a Charleston, SC tile installation company.

Built a clean, multilingual marketing site (English / Spanish / Portuguese) for a residential and commercial tile installer with 15+ years of experience.

Designed for credibility-first conversion: prominent free-estimate CTA, project gallery, and licensed/insured trust signals above the fold.

Multi-channel contact integration (phone, email, WhatsApp, contact form) so leads can reach out from the channel they prefer.

HTML CSS JavaScript Multilingual Responsive
Sunshine Promo
Role: Web Developer

Sunshine Promo

Brand site for an Orlando promotional-products studio.

Built a modern brand site for a promotional-products studio that frames itself as a creative partner rather than a logo-stamping vendor.

Hero video backgrounds, four product verticals (branded apparel, eco solutions, everyday essentials, event kits), and case-study-style brand partnerships with AT&T, Meta, and Mercado Libre.

Trilingual (English / Portuguese / Spanish) with sustainability messaging woven through copy and imagery.

Next.js React Tailwind CSS Responsive i18n
JesusAMA
Role: Web Developer

JesusAMA

Non-profit site mobilizing givers to serve families in need.

Built the home for a non-profit rooted in the belief that faith without action is incomplete (James 2) — the site exists to be a living expression of that mission.

Mobilizes a community of believers and compassionate givers to serve individuals and families with financial support, relief, food, shelter, and emergency aid.

Focused on restoring not just circumstances, but dignity and hope — copy and layout are tuned for warmth and trust over hard-sell conversion.

Next.js React Tailwind CSS Responsive

Open Source

Libraries and tools I've built to help the developer community.

Reflow

A Kotlin Multiplatform library that simplifies data fetching with automatic retry logic, loading state management, and flexible caching strategies.

Kotlin Multiplatform Compose Caching Coroutines

ExcuseMe

A polite and easy way to ask for Android Permissions. Reduces boilerplate code with a simple one-line simplified usage.

Android Kotlin Permissions Library

Kobaia

UX Test Lib built on top of UIAutomator to provide a simple discoverable API to reduce boilerplate and verbosity in tests.

Android Testing UIAutomator Kotlin

Code Philosophy

KISS + DRY

Huge fan of KISS and DRY. I believe that simple and concise code is easier to maintain and understand.

Comprehensive Tested

A robust pyramid of Unit, Integration, and Snapshot tests. If it's not tested, it doesn't ship.

Modularization

Feature-based modules to improve build times and enforce separation and improve maintainability. Scalable for large engineering teams.

TechStack.kt 
class MyViewModel : ViewModel() {
    val dataFlow = reflow {
        api.fetchData()
    }
}

@Composable
fun MyScreen(viewModel: MyViewModel) {
    ReflowContent(viewModel.dataFlow) { data ->
        MyContent(data)
    }
}