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Hi, I’m Spencer Zeke DePas, a Senior Full-Stack Mobile Engineer with 10+ years building high-performance apps across iOS, Android, React Native, Flutter, and Node.js. I specialize in delivering AI-powered mobile products, weaving large language models, voice and image understanding, OCR, embeddings, and generative media into consumer and enterprise solutions. I design scalable cross-platform architectures (React Native + native bridges, Flutter plugins, and KMM shared modules) and ship full‑stack features using TypeScript, Node.js, GraphQL, and serverless services. I enjoy turning early product ideas into production-ready systems, accelerating development with prototypes, AI-driven feature workflows, and robust CI/CD pipelines, all while collaborating closely with product, design, backend, and AI research teams to deliver polished experiences.…Hi, I’m Spencer Zeke DePas, a Senior Full-Stack Mobile Engineer with 10+ years building high-performance apps across iOS, Android, React Native, Flutter, and Node.js. I specialize in delivering AI-powered mobile products, weaving large language models, voice and image understanding, OCR, embeddings, and generative media into consumer and enterprise solutions. I design scalable cross-platform architectures (React Native + native bridges, Flutter plugins, and KMM shared modules) and ship full‑stack features using TypeScript, Node.js, GraphQL, and serverless services. I enjoy turning early product ideas into production-ready systems, accelerating development with prototypes, AI-driven feature workflows, and robust CI/CD pipelines, all while collaborating closely with product, design, backend, and AI research teams to deliver polished experiences.

Spencer Zeke DePas

Full Stack Developer, App Developer, Web Developer, +2

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Hi, I’m Spencer Zeke DePas, a Senior Full-Stack Mobile Engineer with 10+ years building high-performance apps across iOS, Android, React Native, Flutter, and Node.js. I specialize in delivering AI-powered mobile products, weaving large language models, voice and image understanding, OCR, embeddings, and generative media into consumer and enterprise solutions. I design scalable cross-platform architectures (React Native + native bridges, Flutter plugins, and KMM shared modules) and ship full‑stack features using TypeScript, Node.js, GraphQL, and serverless services. I enjoy turning early product ideas into production-ready systems, accelerating development with prototypes, AI-driven feature workflows, and robust CI/CD pipelines, all while collaborating closely with product, design, backend, and AI research teams to deliver polished experiences.…Hi, I’m Spencer Zeke DePas, a Senior Full-Stack Mobile Engineer with 10+ years building high-performance apps across iOS, Android, React Native, Flutter, and Node.js. I specialize in delivering AI-powered mobile products, weaving large language models, voice and image understanding, OCR, embeddings, and generative media into consumer and enterprise solutions. I design scalable cross-platform architectures (React Native + native bridges, Flutter plugins, and KMM shared modules) and ship full‑stack features using TypeScript, Node.js, GraphQL, and serverless services. I enjoy turning early product ideas into production-ready systems, accelerating development with prototypes, AI-driven feature workflows, and robust CI/CD pipelines, all while collaborating closely with product, design, backend, and AI research teams to deliver polished experiences.

Available to hire

Hi, I’m Spencer Zeke DePas, a Senior Full-Stack Mobile Engineer with 10+ years building high-performance apps across iOS, Android, React Native, Flutter, and Node.js. I specialize in delivering AI-powered mobile products, weaving large language models, voice and image understanding, OCR, embeddings, and generative media into consumer and enterprise solutions.

I design scalable cross-platform architectures (React Native + native bridges, Flutter plugins, and KMM shared modules) and ship full‑stack features using TypeScript, Node.js, GraphQL, and serverless services. I enjoy turning early product ideas into production-ready systems, accelerating development with prototypes, AI-driven feature workflows, and robust CI/CD pipelines, all while collaborating closely with product, design, backend, and AI research teams to deliver polished experiences.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Mobile Application Developer at Invonto

January 1, 2020 - November 17, 2025

Built full-stack Android, iOS, Flutter, and React Native features enabling cross-platform delivery for retail, healthcare, logistics, and senior-care apps. Implemented AI-based capabilities including speech-to-text, image recognition for medical forms, and OCR-powered document scanning using CoreML, MLKit, and TFLite. Architected modular Android apps with MVVM/MVI, Jetpack Compose, and DI (Dagger-Hilt); integrated Stripe payments, Google Maps SDK, geofencing, and advanced media modules; optimized performance and collaborated with backend teams on microservices and CI/CD pipelines.

Mobile Consultant at Stealth Startup

September 1, 2023 - September 1, 2023

Developed cross-platform mobile modules for core fintech features including onboarding, KYC verification, identity scanning (OCR + facial recognition), and biometric secure login. Integrated Plaid, Stripe, and bank account linking flows; built transaction history, budgeting insights, and analytics using SwiftUI, Jetpack Compose, and Flutter prototypes. Implemented real-time data synchronization (Firestore/WebSockets) and guided architecture reviews emphasizing risk/compliance.

Senior Mobile Engineer at Stealth FinTech Startup

March 1, 2023 - March 1, 2023

Designed and shipped end-to-end financial features: ACH transfers, mobile check deposits, card management, virtual cards, and transaction categorization. Implemented real-time market dashboards with WebSockets, Swift Concurrency, and Combine; ensured PCI-compliant tokenization and encrypted data handling; led KYC/AML workflows including document capture and automated ID validation; improved app architecture and testability.

Mobile Engineer at Clear Faun

February 1, 2020 - February 1, 2020

Developed native Android and iOS healthcare applications supporting patient engagement, medication tracking, and provider communication. Implemented HIPAA-aligned secure messaging, multi-step authentication, encrypted local storage, and Bluetooth device integrations; leveraged Firebase for alerts and real-time updates; built early React Native and Flutter prototypes to accelerate healthcare workflows.

Android Developer at UI Centric

December 1, 2017 - December 1, 2017

Built native Android apps for major broadcasters (AMC, BBC America), optimized for 10-foot interfaces; developed ExoPlayer-based video playback with custom controls and adaptive streaming; implemented DRM (Widevine) for secure streaming and delivered Leanback UI components for large-scale content browsing.

Android Developer at NYC Mobile Development Acceleration Group

December 1, 2016 - December 1, 2016

Participated in MDLAG, focusing on Android architecture, data structures, and design patterns. Built prototype Android apps implementing Factory, Observer, Singleton, and MVVM; contributed to weekly sessions on clean architecture and modular refactoring practices.

Android Developer at MediPortal

September 1, 2016 - September 1, 2016

Developed native Android healthcare applications enabling secure patient communication, provider messaging, and appointment management. Implemented HIPAA-sensitive data handling, migrated interfaces to Material Design, and built multi-pane tablet layouts for clinicians and patients.