Amichay Oren, Developer in New York, NY, United States
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Amichay Oren

Verified Expert  in Engineering

Architecture Developer

Location
New York, NY, United States
Toptal Member Since
July 20, 2019

As an entrepreneur of successful ventures, Amichay understands the importance of problem-solving and proactivity. As a hands-on tech executive, Amichay understands delivery processes at scale and attention to detail. As a senior developer and systems architect, he is versed in cloud technologies, server-side development for scale, databases, ETLs, and IoT.

Portfolio

Open-Source Project Owner
Python 3, Multiprocessing, Algorithms, Design Patterns, Open Source...
AppCard, Inc.
Git, Linux, PostgreSQL, NGINX, Redis, Celery, Python, Architecture, CTO...
Self-employed
Python, C, C++, Design Patterns, Amazon Web Services (AWS), Sanic Web Server...

Experience

Availability

Part-time

Preferred Environment

Amazon Web Services (AWS), PostgreSQL, Celery, C, C++, Git, Python, Linux

The most amazing...

...project I've worked on was the design and implementation of a real-time billing system serving 35+ million subscribers.

Work Experience

Owner

2020 - PRESENT
Open-Source Project Owner
  • Released an open-source platform used worldwide by retail algorithm traders. One of the highest ranks projects, the only project to support day-trading.
  • Delivered documentation and wrote articles on https://amor71.medium.com/.
  • Marketed the project, trained contributors and project management.
  • Automated development on GitHub, including deployment, automated testing, and managing the project lifecycle.
Technologies: Python 3, Multiprocessing, Algorithms, Design Patterns, Open Source, Machine Learning, GitHub, GitHub Pages, Google Cloud Platform (GCP), PostgreSQL, OpenTelemetry, Leadership, Software Design, Serverless, AWS Lambda, WebSockets, SQL, Management, REST APIs, Rust, Blockchain, API Integration, APIs, Crypto, Non-fungible Tokens (NFT), Algorithmic Trading, Python, Trading, Architecture, Git, Analysis, Docker, Web Scraping, Cloud, API Gateways, System Architecture Design, Project Planning, Bitcoin, Cryptocurrency, Technical Consulting, Engineering, Fintech, Back-end, DevOps, Requirements Analysis, Fintech Consultant, Pytest, Amazon API, Reporting, JSON, Figma, Software Architecture, Trade Finance, Trade, Stock Trading, Cloud Services, Google Cloud, Cloud Firestore, Documentation, System Architecture, Webhooks, Pandas, NumPy, Scikit-learn, Trading Systems, Software Development, OpenAI GPT-3 API, Plaid API, OpenAI GPT-4 API, ChatGPT, Beautiful Soup, IT Project Management, Landing Pages, Startups, Mobile Development, Mobile Apps, CIO, Pydantic, OpenAI, Large Language Models (LLMs), Webflow, Apache Kafka

CTO | Co-founder

2011 - PRESENT
AppCard, Inc.
  • Founded a customer retention platform for retailers and grocery stores using Python and embedded IoT.
  • Led the product team in defining mobile, web, and embedded strategy, functionality, and UI/UX.
  • Designed and owned system architecture, software design, and technology stacks.
  • Developed significant parts of the server-side implementation.
  • Led DevOps, CI/CD, deployment, and monitoring process and tools.
  • Oversaw technology, project management, M&A, and DD processes.
Technologies: Git, Linux, PostgreSQL, NGINX, Redis, Celery, Python, Architecture, CTO, Design Patterns, Product Management, Amazon Web Services (AWS), Remote Team Leadership, Pyramid, Amazon S3 (AWS S3), Leadership, Software Design, Serverless, Auth0, WebSockets, Data Scraping, SQL, ETL, Django, Docker, SendGrid, SendGrid API, Management, Teamwork, Cross-functional Team Leadership, REST APIs, HTML, API Integration, APIs, Agile, Mobile, Sanic Web Server, Jupyter Notebook, Python 3, Multiprocessing, Open Source, Java, Analysis, Machine Learning, Back-office System Development, Web Scraping, Scrapy, Data Engineering, Lambda Functions, Online Ordering, Payment Gateways, Mobile Applications, Web Applications, Site Speed Optimization, Caching, Cloudflare, W3 Total Cache, WordPress, Amazon DynamoDB, Twilio API, Cloud, AWS IoT, Data Modeling, Consumer Packaged Goods (CPG), Plaid, FastAPI, Amazon EC2, Amazon Cognito, Node.js, AWS IoT Greengrass, Amazon Aurora, Amazon Athena, API Gateways, Web Development, System Architecture Design, Project Planning, Grafana, Data Visualization, Electronic Payments, Angular, Amazon EC2 API, Flask, AWS Auto Scaling, Microservices Architecture, Payment APIs, Agile Delivery, Engineering, Product Growth, B2B, Splunk, Prometheus, Microservices, Back-end, Spring Boot, HIPAA Compliance, DevOps, Full-stack, Requirements Analysis, Point of Sale, Card Payments, eCommerce, Pytest, Jira, Amazon API, Integration, Amazon, Reporting, SQLAlchemy, JSON, Bitbucket, Figma, Django REST Framework, Software Architecture, Data Science, Selenium, Cloud Services, Amazon RDS, Project Management, Google Cloud, Cloud Firestore, Firebase, Technical Leadership, Documentation, Cross-platform App Development, Flutter, System Architecture, SaaS, Artificial Intelligence (AI), Automation, Cloud Architecture, System Design, Webhooks, Pandas, Email, SPF, SMTP, Software Development, Azure, AngularJS, Plaid API, Twilio, Web Project Management, WP Engine, IT Project Management, Landing Pages, Startups, Laravel, B2C, Mobile Development, Domains & Hosting, Email Marketing, Email Delivery, Email Systems, Software QA, Team Leadership, Customer Relationship Management (CRM), Mobile App Development, Social Media Apps, Data Integration, Data Governance

Consultant

1999 - PRESENT
Self-employed
  • Provided technology evaluation, tech due diligence, stack design, and implementation reviews.
  • Reviewed design, architecture, and algorithms for leading customers.
  • Implemented boutique projects for unique, multidisciplinary needs.
Technologies: Python, C, C++, Design Patterns, Amazon Web Services (AWS), Sanic Web Server, SQL, Docker, REST APIs, API Integration, APIs, Linux, PostgreSQL, Architecture, Multiprocessing, Git, Analysis, Communication, Site Speed Optimization, Caching, FastCGI, W3 Total Cache, Cloud, AWS IoT, Data Modeling, Amazon EC2, API Gateways, Web Development, System Architecture Design, Project Planning, Data Visualization, Cryptocurrency, Amazon EC2 API, Microservices Architecture, Technical Consulting, Agile Delivery, Microservices, GraphQL, Back-end, DevOps, Requirements Analysis, Desktop, Desktop Web Design, Fintech Consultant, eCommerce, Jira, Amazon API, Reporting, OAuth 2, JSON, Figma, Django REST Framework, Software Architecture, Cloud Services, Feasibility Studies, Feasibility, SaaS, Cloud Architecture, System Design, Pandas, G Suite, Software Development, Plaid API, ChatGPT, Twilio, IT Project Management, Landing Pages, Healthcare, Mobile Development, CIO, Software QA, Data Integration

Vice President of R&D

2010 - 2011
Vonage Holdings
  • Started as a consultant on mobile strategy for VG and later joined full-time as VP R&D.
  • Set up and hired a mobile-centric development team.
  • Restructured the R&D team and introduced Agile work methodologies and cloud technologies.
  • Introduced innovation rethinking, kickstarting internal processes to foster innovation.
Technologies: Java, Communication, C, Agile, Design Patterns, Leadership, Software Design, SQL, Management, Teamwork, Cross-functional Team Leadership, REST APIs, Linux, Amazon S3 (AWS S3), Architecture, Multiprocessing, Amazon Web Services (AWS), VoIP, Git, Analysis, Mobile Applications, Web Applications, Caching, FastCGI, W3 Total Cache, Amazon EC2, Web Development, System Architecture Design, Project Planning, Electronic Payments, Amazon EC2 API, Agile Delivery, Engineering, Product Growth, Back-end, DevOps, Requirements Analysis, Desktop Web Design, Integration, Reporting, OAuth 2, JSON, Software Architecture, Project Management, Technical Leadership, Cross-platform App Development, Telecommunications, System Architecture, SaaS, System Design, Software Development, Landing Pages, Domains & Hosting, Email Systems, Software QA, Team Leadership, Social Media Apps, Data Integration

CTO

2006 - 2010
JAJAH, Inc.
  • Created and operated an international VoIP provider catering to over 30 million subscribers and becoming one of the fastest growing and innovative operators globally.
  • Designed, implemented, and operated a network for telephony termination using open-source technology stacks.
  • Created and implemented a real-time payment and billing system for pre-and post-payment plans.
  • Designed, implemented, and operated proactive fraud-prevention systems.
  • Participated in product definition and design processes, leading integrations with IBM, Yahoo, and Microsoft, and discussions with partners and operators in Asia.
Technologies: Microsoft SQL Server, VoIP, Asterisk, C#.NET, .NET, C#, CTO, Product Management, Leadership, Software Design, SQL, Management, Teamwork, Cross-functional Team Leadership, REST APIs, HTML, APIs, Agile, Mobile, Architecture, Multiprocessing, Analysis, Communication, Mobile Applications, Web Applications, Site Speed Optimization, Caching, FastCGI, W3 Total Cache, Data Modeling, System Architecture Design, Project Planning, Data Visualization, Electronic Payments, Fraud Prevention, Payment APIs, Agile Delivery, Engineering, Product Growth, DevOps, Desktop Web Design, Integration, Project Management, Technical Leadership, Telecommunications, System Architecture, System Design, Software Development, Startups, B2C, Email Systems, Software QA, Team Leadership

Development Manager

2001 - 2006
SAP
  • Handled SAP's internal messaging system and online data collaboration as part of SAP Knowledge Management and Collaboration.
  • Owned the SAP .NET framework for integrating Microsoft with SAP technologies.
  • Collaborated with SAP's internal innovation committee for fostering and growing innovation.
Technologies: Java, C++, C#.NET, Leadership, Software Design, C#, .NET, SQL, Management, Teamwork, Agile, Architecture, Analysis, Communication, Back-office System Development, Data Modeling, System Architecture Design, Project Planning, Engineering, Desktop App Development, Desktop, Desktop Web Design, System Architecture

CTO | Co-founder

1999 - 2001
Expression, Inc.
  • Designed, implemented, and operated a data collaboration platform for integration with application platforms, including instant messaging, screen sharing, and more.
  • Designed and implemented an operating system on embedded devices for electronic books.
  • Designed and implemented a connectivity platform between the system's components.
Technologies: Java, C, C++, CTO, Product Management, Leadership, Software Design, SQL, Management, Teamwork, Linux, Agile, Architecture, Multiprocessing, Analysis, Communication, Data Modeling, Project Planning, Engineering, B2B, Desktop App Development, Desktop, Desktop Web Design, eCommerce, B2C

LiuAlgoTrader

https://github.com/amor71/LiuAlgoTrader
LiuAlgoTrader is a scalable, multi-process ML-ready framework for effective algorithmic trading. The framework simplifies algorithm trading strategies' development, testing, deployment, analysis, and training. The framework automatically analyzes trading sessions and hyperparameters optimization, and the analysis may be used to train predictive models.

Python API for FINRA Services

https://github.com/amor71/FINRAShortData
The project provides an API to some FINRA services, which may be helpful in understanding short-selling volume and generating sentiment towards traded assets. The data assist in the analysis of sentiment as well as additional predictive measures for future price movements.

Fractal Time-series Analysis

https://github.com/amor71/time-series-analysis
A collection of tools I've been using for analysis of time series. It's WIP as I'm exposing more and more tools I've been using over the years.

In essence, calculating the fractal dimension: Understanding long-term memory, auto-correlation, and fractal dimension may help understand the boundaries of predictability, the type of underlying processes, and which data-science tools may be put into play.

I find time-series analysis immensely helpful, from data science to log analysis and system verification.

Python <-> Solana Blockchain Bridge

https://github.com/amor71/solpyb
An Open-source project providing a pydantic-like Python interface for interacting with Solana Programs running on the Solana blockchain. The project simplifies executing and getting responses from Solana Programs (a.k.a smart contracts).

Languages

Python, C++, C, Python 3, SQL, Java, C#, C#.NET, HTML, Rust, GraphQL

Frameworks

Pyramid, Scrapy, Flask, OAuth 2, Django REST Framework, SPF, Laravel, .NET, Django, Angular, Spring Boot, Selenium, Flutter, AngularJS

Libraries/APIs

SendGrid API, REST APIs, Twilio API, Amazon EC2 API, Amazon API, SQLAlchemy, Pandas, NumPy, Scikit-learn, Plaid API, Beautiful Soup, Pydantic, React, Node.js

Tools

Git, NGINX, Celery, GitHub, SendGrid, Plaid, Amazon Cognito, Amazon Athena, Grafana, Pytest, Jira, Bitbucket, Figma, G Suite, Asterisk, GitHub Pages, Auth0, Splunk

Paradigms

Agile, Design Patterns, Management, Microservices Architecture, B2B, Microservices, DevOps, Desktop App Development, Requirements Analysis, Desktop Web Design, Data Science, Automation, B2C, Mobile Development, ETL, HIPAA Compliance

Platforms

Mobile, Amazon Web Services (AWS), Linux, Google Cloud Platform (GCP), Jupyter Notebook, AWS Lambda, Docker, Blockchain, AWS IoT, Amazon EC2, AWS IoT Greengrass, Desktop, Amazon, Firebase, Twilio, WordPress, Azure, Webflow, Apache Kafka

Storage

Redis, PostgreSQL, Amazon Aurora, JSON, Google Cloud, Cloud Firestore, Data Integration, Microsoft SQL Server, Amazon S3 (AWS S3), Amazon DynamoDB, WP Engine

Industry Expertise

Project Management, Telecommunications, Trading Systems, Healthcare

Other

Sanic Web Server, Analysis, Communication, Architecture, CTO, Product Management, Remote Team Leadership, Multiprocessing, Open Source, Leadership, Software Design, Serverless, WebSockets, Trading, Teamwork, Cross-functional Team Leadership, API Integration, APIs, Crypto, Non-fungible Tokens (NFT), Algorithmic Trading, Back-office System Development, Web Scraping, Data Engineering, Lambda Functions, Online Ordering, Payment Gateways, Mobile Applications, Web Applications, Site Speed Optimization, Caching, FastCGI, W3 Total Cache, Cloud, Data Modeling, Consumer Packaged Goods (CPG), Computer Vision, 3D Reconstruction, Financials, FastAPI, API Gateways, Web Development, System Architecture Design, Project Planning, Data Visualization, Electronic Payments, Bitcoin, Fraud Prevention, Cryptocurrency, AWS Auto Scaling, Technical Consulting, Payment APIs, Agile Delivery, Engineering, Product Growth, Fintech, Prometheus, Back-end, Point of Sale, Fintech Consultant, eCommerce, Integration, Reporting, Software Architecture, Trade Finance, Trade, Stock Trading, Cloud Services, Feasibility, Feasibility Studies, Amazon RDS, Technical Leadership, Documentation, Cross-platform App Development, System Architecture, Scalable Architecture, SaaS, Artificial Intelligence (AI), Cloud Architecture, System Design, Webhooks, Email, SMTP, Software Development, OpenAI GPT-3 API, OpenAI GPT-4 API, ChatGPT, Web Project Management, IT Project Management, Landing Pages, Startups, Mobile Apps, CIO, Domains & Hosting, Email Marketing, Email Delivery, Email Systems, Software QA, Team Leadership, Customer Relationship Management (CRM), Mobile App Development, Social Media Apps, OpenAI, Large Language Models (LLMs), Data Governance, VoIP, Algorithms, Machine Learning, OpenTelemetry, Data Scraping, Solana, Cloudflare, Physics, Full-stack, Card Payments, Chatbots

1989 - 1992

Bachelor of Science Degree in Math & Computer Science

Tel-Aviv University - Tel-Aviv, Israel

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