Background
Tomer Rosenfeld - Full Stack Developer

The Developer Behind 0+ Downloads

Elite Software Engineer • Military Cyber Expert • Startup Founder

I build products that millions use, architecting scalable solutions from mobile apps to AI systems.

Independent Developer

Entrepreneur and Open Source Contributor | 2014 - Present

20+ million app downloads, endless media coverage, and an exit
Open-source owner and contributor, including contributions to renowned projects like Signal
Adept at UI/UX design, specializing in Google's Material Design principles
Product ManagementAndroid (R&D)FlutterPythonAIReactKotlin/JavaAdobe SuiteLinux

AI Software Engineer

Mixtiles | 2024 - Present

Architected production Python server with AI capabilities serving millions of users
Developed iOS features and AI model integrations using CLIP embeddings
Designed scalable AWS infrastructure using CDK for production deployment
Championed adoption of AI tools to enhance teams productivity
AIFlutterRustPythoniOSAWS

Android Cyber Security R&D

8200 Unit (Reserves) | 2024

Android low level apps and system development
AndroidLinuxRootPython

Ministry of Defense

Cyber Security Consultant | 2022 - 2023

Consultant and CTO for a cyber security division under the Ministry of Defense
Network SecurityOSINTProduct ManagementCellular Protocols

Cyber Security R&D

8200 Unit (Initial Compulsory Service) | 2018 - 2020

Development of robust server side applications with heavy load
Large scale delicate Linux Kernel modifications, research and development
GolangPythonNetwork SecurityLinux & Kernel DevelopmentRedisSQLCJavascriptGitlab CI

Android Security Researcher

Matrix Ltd. | 2017 - 2018

Android system/apps vulnerabilities and security research
AndroidLinuxNetwork SecurityWiresharkFiddlerCharles

Full Stack Web Developer

Part Time Freelance | 2014 - 2016

Developed websites and services for local after school teaching center
AngularJSHTML/CSSJavascriptNodeJS

Trusted by

Matrix
Ministry of Defense
BGU
Mixtiles
Mada
Guy Koren Schools
Rounds
Matrix
Ministry of Defense
BGU
Mixtiles
Mada
Guy Koren Schools
Rounds
Matrix
Ministry of Defense
BGU
Mixtiles
Mada
Guy Koren Schools
Rounds

Case Studies

Detailed breakdowns of how I've solved complex technical challenges and delivered measurable business results.

android

Always On AMOLED

Mobile App with 20M+ Downloads

8 years

Revolutionary always-on display solution for Android that achieved global recognition and successful acquisition.

20M+
Downloads
180+ countries
Global Reach
Successful Exit
Outcome

Challenge

Create an energy-efficient always-on display app that works across diverse Android devices while maintaining optimal battery performance.

Solution

Developed sophisticated power management algorithms, device-specific optimizations, and leveraged undocumented Android APIs to create an intuitive Material Design interface that scales across all Android versions.

AndroidMaterial DesignLow-LevelBattery Optimization
web

Mixtiles AI Backend

Production AI Infrastructure Serving Millions

Current

Built scalable AI backend powering next-generation photo and video experiences for millions of Mixtiles users.

Millions
Users Served
Predictive UX
AI Innovation
High Scale
Infrastructure

Challenge

Architect production-grade AI infrastructure that processes photos and videos at scale while intelligently understanding user galleries and preferences.

Solution

Designed and implemented a robust Python backend with AWS CDK infrastructure, pioneering AI heuristics to detect trips, faces, and identify users' most important people. Built predictive algorithms in uncharted territory to anticipate user needs before they ask, integrating cutting-edge AI models for photo enhancement, timelapse generation, and artistic filters.

AI/MLDevOpsData ScienceProduction Systems
mobile

Hadasha News AI

Mindful AI-Powered Mobile News App

4 months

Agenda-free news delivery using AI to synthesize consensus-based reporting from multiple Hebrew sources.

Psychology
Mindful UI
Bias-free AI
Innovation
iOS & Android
Platforms

Challenge

Combat information overload and media bias by creating an AI system that identifies consensus across multiple news sources while respecting user attention.

Solution

Built a sophisticated AI pipeline that processes daily news articles, identifies common topics, and synthesizes them into coherent, bias-free stories focusing only on factual consensus.

AI/MLNLPPythonAWSFlutterUI/UX Design
ai

Mobile MCP Framework

Pioneering AI-Mobile Integration

3 weeks

First-of-its-kind framework enabling seamless integration between locally-running LLMs and mobile applications.

First-of-kind
Innovation
3 weeks
Development
AIDL + MCP
Technical Depth

Challenge

Bridge the gap between powerful AI models and mobile app capabilities on constrained mobile platforms without desktop-style subprocess support.

Solution

Developed an innovative two-sided framework using Android AIDL and MCP protocol adaptation, allowing local LLMs to discover and interact with any app's capabilities through standardized annotations.

AndroidKotlinMCPOpen SourceMobile LLMs

Ready to Create Your Success Story?

Let's discuss how I can help you achieve similar results with your next project.

Services That Drive Results

From startups to Fortune 500 companies, I deliver technology solutions that generate measurable business impact.

Ready to transform your ideas into profitable products? Let's discuss your project

Mobile App Development

Build scalable mobile applications that reach millions. From concept to 20M+ downloads, I deliver apps that users love and businesses profit from. iOS, Android, and cross-platform solutions.

AI & Machine Learning Solutions

Transform your business with cutting-edge AI. From NLP systems to intelligent automation, I architect AI solutions that drive real ROI and competitive advantage.

Full-Stack Web Development

End-to-end web solutions that scale. Responsive frontends, robust backends, and seamless user experiences. Built for performance, security, and growth.

Cybersecurity & Infrastructure

Military-grade security solutions. Protect your assets with enterprise-level cybersecurity, vulnerability assessment, and secure architecture design from an ex-8200 expert.

Frequently Asked Questions

Everything you need to know about working with me. Don't see your question? Ask me directly

Still Have Questions?

I'm here to help! Let's discuss your project requirements and how I can bring your vision to life.

Let's Build Something Amazing