Hanan Weiss
CTO & Head of R&D

Hanan Weiss

Hands-on software architect & R&D leader: medical, digital-health & defense

More than a decade turning requirements into validated systems that run where reliability is not optional. I lead R&D and stay deliberately hands-on in the code, and my next challenge could come from any of these worlds.

Summary

Hands-on engineering lead and architect with more than a decade of building backend and full-stack systems from architecture through production, in environments where correctness is not negotiable. At MedDev Soft, a company specializing in medical-device software, regulation (FDA and Europe), and cybersecurity, I've led engineering teams for over four years while writing a large share of the code myself, across C#/.NET, Node.js, Python, and TypeScript. I'm an AI-fluent engineer: Claude Code, Cursor, and Copilot are my primary development tools, I've built LLM-powered features into products with evaluation and guardrails, and our AI-first development has cut delivery times by about 40%. I'm equally at home leading an R&D group and building complex systems myself, and my next challenge could come from any of these worlds.

Hands-on backend & full-stack development
Architecture & technology decisions alongside implementation
Microservices, APIs & cloud (AWS/Azure, Docker)
AI-fluent engineering (Claude Code, Cursor, Copilot)
LLM features with evaluation & guardrails
Team leadership & mentoring (4+ years)

Experience

CTO & Head of R&D · MedDev Soft

Jan 2026 - Present
  • Architect and build software end to end across backend and full-stack: C#/.NET, Node.js, Python, TypeScript, React, and React Native, staying hands-on in the hardest parts.
  • Own architecture and technology decisions and implement them: cloud services and APIs on AWS and Azure, SQL and NoSQL data layers (PostgreSQL, MySQL, MongoDB), Docker and CI/CD.
  • Develop AI-first: Claude Code, Cursor, and Copilot as primary daily tools, under clear review and guardrails, cutting delivery times by about 40%.
  • Build LLM-powered features into client products, with evaluation and guardrails defined before deployment.
  • Lead and mentor engineering teams of four to ten (development, QA, cybersecurity) while remaining the hands-on technical anchor; delivery under regulated processes (FDA, IEC 62304) where approximation is not an option.

Senior Software Engineer & R&D Manager · MedDev Soft

2022 - 2025
  • Built device and full-stack software hands-on in C#/.NET, Node.js, Python, TypeScript, React, and React Native across many client projects, from architecture to production.
  • Designed and implemented cloud-native systems on AWS and Azure, and set up CI/CD, quality, and secure-development practices.
  • Did a large share of the core development myself while leading a small R&D team and coordinating delivery across disciplines.
  • Introduced the first AI-assisted development practices that later scaled into the company-wide program.

Software & Algorithm Engineer · Rafael Advanced Defense Systems

2017 - 2022
  • Developed real-time algorithmic components for classified defense projects in C++, contributing from early software development through to field operation.
  • Led development processes and built the CI/CD pipeline.
  • Created real-time display and decoding tools in Python and MATLAB, and performance-research tooling on Big Data platforms.
  • Managed Azure DevOps and cross-platform development.
  • Recognized with divisional and departmental excellence awards.

Technical Index Operations · Cortica

2015 - 2016
  • Built automation and web-scraping tools in Python.
  • Managed NoSQL databases (ELK) and server-monitoring systems.
  • Tested and optimized web applications.

Skills

Leadership & Process
R&D & Technology LeadershipHands-on ArchitectureFull SDLCAgile SQA / Systems EngineeringSecure DevelopmentCybersecurity MentoringFDA 510(k)IEC 62304
AI-Fluent Engineering
Claude CodeCursorGitHub Copilot LLM Features in ProductsPrompt EngineeringEvaluation & Guardrails
Development & Languages
PythonC# / .NETC++C Node.jsTypeScriptJavaScriptReact React NativeAngularREST APIs DesktopWebMobile
Infrastructure & Tools
AWSAzureDockerGit CI/CDMySQLPostgreSQLMongoDB ELKLinux / Windows

Education & Service

B.Sc. in Management Information Systems

Jezreel Valley Academic College · 2012 - 2015

Final project (top grade): a full-stack web application for managing personal fitness training.

Intelligence NCO

Knights of the North Squadron · 2007 - 2010

Awarded the unit commander's outstanding-soldier commendation and the base commander's certificate of excellence.

Let's talk.

Working on serious software in medical, health, or defense - or figuring out how to adopt AI in engineering without losing control of quality? I'm always glad to connect.