Zach Efrati
Verified Expert in Engineering
System Design Developer
Hoboken, NJ, United States
Toptal member since March 13, 2019
Zach has 15+ years of experience as an individual contributor, team leader, and engineering director, combined with product management experience. He's well versed with numerous platforms, frameworks, and programming languages including, but not limited to AWS, ML, Node.js, Python, and much more.
Portfolio
Experience
- System Design - 10 years
- REST - 8 years
- GitHub - 6 years
- Amazon Alexa - 5 years
- JavaScript - 5 years
- Node.js - 5 years
- Python 3 - 3 years
- MongoDB - 3 years
Work Experience
Director of Engineering
Braze
- Led a team responsible for core functionalities of a marketing platform.
- Built a machine-learning team from the grounds-up.
- Led Agile transformation process.
Senior Director of Innovation
Vonage
- Envisioned, designed, and built a multi-tenant platform for chatbots. The platform was channel-agnostic and allowed for zero-deployment when conversation templates required updates.
- Built Voice skills for Alexa and Google Home. Integrated with 3rd party services and API for enhanced functionality such as calendar integration and communication solutions.
- Built numerous AI-based services from transcription to voice sentiment to image recognition.
- Explored and chose technologies for task-specific projects.
- Spearheaded multi-group projects including sales, marketing and legal.
Director of Technology
JAJAH
- Managed a team responsible for building mobile applications for various mobile platforms. The application was installed and used by 10,000s of users.
- Integrated with 3rd party services.
- Managed and scaled development teams.
- Defined development process and methodology.
Experience
Virtual Conference Manager
Education
Bachelor of Science Degree in Computer Sciences and Mathematics
Ben Guryon University - Israel
Certifications
Deep Learning Specialization
Coursera
Skills
Libraries/APIs
Node.js, EJS, Google+ API, Chai, Sinon.JS, WebRTC, Amazon EC2 API, LSTM
Tools
JavaScript Debugging, JavaScript Testing, Mongoose, GitHub, Mocha, Dialogflow, Node Version Manager, Git, Amazon Simple Email Service (SES)
Languages
JavaScript, Python 3, C, C++, CoffeeScript, Ruby, Python, Java, C#, C#.NET, SQL
Paradigms
REST
Platforms
Firebase, Amazon Alexa, Linux, Mobile, Amazon Web Services (AWS), Visual Studio Code (VS Code)
Storage
MongoDB, Amazon DynamoDB, NoSQL, PostgreSQL, Amazon S3 (AWS S3), Redis
Frameworks
Yarn, A-Frame, Express.js, Koa, Compass, Ruby on Rails (RoR)
Other
APIs, RTP, SIP, H.323, Code Architecture, System Design, Bcrypt, HTTP Request Methods, Async/Await, RESTful Routes, Amazon Route 53, Deep Neural Networks (DNNs), Neural Networks, Convolutional Neural Networks (CNNs), Recurrent Neural Networks (RNNs), Google Home, Natural Language Processing (NLP), LSTM Networks, Generative Pre-trained Transformers (GPT), Machine Learning, VoIP
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