Organization

Research, Engineering & Commercialization Leadership

ATOZ SERVICE INC brings together experienced leaders in AI, software architecture, cloud infrastructure, cybersecurity, systems integration, technical communication, and commercialization. Our organizational structure supports accountable execution of research, healthcare technology, and commercial programs.

U.S.-based technical leadership with cross-functional expertise from research prototype through deployment and commercialization.

Leadership & Technical Team

A cross-functional team aligned around research integrity, measurable engineering execution, secure deployment, and commercial transition.

Terry Choi

President & CEO / Principal Investigator / Commercialization Lead

Provides overall corporate and project leadership, technical coordination, strategic partnerships, milestone oversight, risk management, sponsor communication, and commercialization strategy. Brings more than 25 years of experience in software engineering, enterprise IT, systems integration, technical consulting, and technology commercialization.

Program LeadershipResearch ProgramsCommercializationSystems IntegrationAI Strategy

Hee-Jean Kim, PhD

Security & AI Technical Advisor

Provides expertise in machine learning, cryptography, information security, secure systems architecture, network security, and technical security review. Holds CISSP certification and has extensive experience in cryptographic systems, embedded systems, machine-learning applications, AWS environments, and secure infrastructure.

CybersecurityCryptographyMachine LearningCISSPAWSSecure Architecture

Joseph Hwang

Senior Technical Lead / AI & Systems Architecture Lead

Senior software engineering and systems architecture leader with extensive experience in embedded systems, edge computing, production software, medical AI, local AI architectures, RAG, LoRA-based model adaptation, and AI-assisted engineering. Former senior engineering leader at Panasonic Avionics and Samsung Electronics.

AI ArchitectureEdge AIMedical AIEmbedded SystemsRAGLoRASoftware Engineering

Ethan Lee

Communication Director / AWS Engineer

Supports AWS cloud environment implementation, technical coordination, project documentation, team communication, and partner-facing technical communication.

AWSCloud InfrastructureTechnical CommunicationDocumentationPartner Coordination

Daehyun Chung

Software & Cloud Integration Lead

Provides backend architecture, cloud integration, API development, systems integration, deployment, and security engineering. Prior experience includes Microsoft Azure support engineering, SOC analysis, enterprise software architecture, backend development, and REST/SOAP-based integration.

AzureCloud IntegrationBackendAPISOCEnterprise Architecture

Jane Kim

Backend & Embedded Software Developer

Develops and maintains C# and XAML desktop applications, WCF integration services, and web-based RMA systems. Her experience includes WPF and ClickOnce deployment, Ubuntu virtual machines on Hyper-V, GitHub workflows, PDF-to-CSV/TXT conversion for EDI processing, automated build scripts, code-signing certificates, and MSI installers.

BackendEmbedded SoftwareC# / XAMLWPF / WCFClickOnceHyper-V / UbuntuEDIDeployment Automation

Dongwoo Shin

Full-Stack & DevOps Developer

Develops front-end and backend application components and supports DevOps workflows for reliable integration, deployment, and operation.

Front-EndBackendFull-Stack DevelopmentDevOpsIntegrationDeployment

Jaeha Kim

Flutter / Android / iOS Developer

Develops cross-platform mobile applications with Flutter for Android and Apple iOS environments.

FlutterAndroidiOSMobile DevelopmentCross-Platform Apps

Cristina R. Lee

AI & Software Engineer

Supports AI and software engineering activities including Python, PyTorch, RAG pipelines, LoRA-based model development, backend systems, Docker deployment, and cloud-hosted application development.

PythonPyTorchRAGLoRADockerBackendAI Engineering

Hyunsoo Kim

UI/UX Engineer & Researcher

Supports UI/UX engineering and research for clear, accessible, and user-centered digital experiences.

UI EngineeringUX ResearchInteraction DesignAccessibilityUser-Centered Design

Project Delivery Structure

Principal Investigator / Program Leadership

  • Scientific and technical coordination
  • Milestone and risk management
  • Research partner coordination
  • Sponsor communication
  • Program reporting

AI & Systems Architecture

  • AI model architecture
  • Edge and local processing
  • RAG and model integration
  • Digital Twin implementation
  • Technical design reviews

Software & Cloud Engineering

  • Application and API development
  • AWS / Azure infrastructure
  • Backend integration
  • Deployment and QA
  • Cloud operations

Privacy & Security

  • Data protection architecture
  • Access controls
  • Encryption
  • Secure data handling
  • Security review support

Technical Communication

  • Technical documentation
  • Cross-team coordination
  • Partner communications
  • Progress reporting
  • Engineering documentation

Commercialization

  • Customer discovery
  • Competitive positioning
  • Business model development
  • Regulatory pathway coordination
  • Follow-on research and market transition planning

Technical Environment

AI & Model Development

Python, PyTorch, TensorFlow, Hugging Face, RAG, LoRA, local AI, model evaluation

Cloud & Infrastructure

AWS, Azure, Docker, Kubernetes, secure APIs, backend services

Data & Integration

SQL, NoSQL, ETL, REST APIs, data pipelines, analytics

Cybersecurity

Access control, encryption, secure architecture, security monitoring, privacy-aware design

Mobile & Edge

Android integration, Samsung ecosystem, on-device processing, wearable integration

U.S.-Based Project Environment

ATOZ SERVICE INC's primary technical project facility is located in Fullerton, California.

1127 E. Ash Ave
Fullerton, CA 92831

The facility supports software engineering, AI development and testing, cloud and backend integration, cybersecurity-related technical work, mobile application development, project management, and commercialization activities.

ATOZ currently maintains local GPU-enabled computing resources for AI testing and is expanding its AWS-based cloud computing environment to support scalable project workloads.

Federal Contracting Readiness

ATOZ SERVICE INC maintains active federal registrations supporting participation in U.S. government research and contracting opportunities.

SAM.gov
Active
UEI
PB9PPDWH1GP6
CAGE
17S82

Project Governance

Technical Reviews

Milestone reviews, technical decision records, issue tracking, model evaluation, and measurable acceptance criteria.

Research Integrity

Privacy, security, reproducibility, responsible AI, data governance, and human-subjects coordination where applicable.

Partner Coordination

Defined responsibility between ATOZ and research partners, deliverable ownership, facilities coordination, IP coordination, and workshare tracking.

Program Reporting

Schedule, budget, technical risks, experiments, results, progress reporting, and sponsor-facing documentation.

Commercial Transition

Customer validation, pilot preparation, regulatory pathway coordination where applicable, pricing, partnerships, and follow-on transition planning.