Dory is available for hire
Hire DoryDory Zidon
Verified Expert in Engineering
Software Engineering Developer
San Francisco, CA, United States
Toptal member since March 7, 2022
Bio
Dory is an innovative software engineer with 18+ years of success, building customer-centric technology products and solutions. He built systems powering a $100 million advertising business for one client and improved performance by 15X for another. Dory has hired and trained teams and turned MVPs into full products. He has experience across a broad ecosystem of software, tools, and platforms, including Python, AWS, JavaScript, and React, to drive effective end-to-end execution of projects.
Portfolio
BCG - Gamma
Python, React, Databases, QA Testing, APIs, Amazon Web Services (AWS)...
Coreteam.io (BecauseMarket)
JavaScript, React, Python, Django, Amazon Web Services (AWS), Kubernetes, HTML5...
Coreteam.io (Heart Media)
JavaScript, Node.js, Python, React, Angular, AngularJS...
Experience
Availability
Part-time
Preferred Environment
Python, JavaScript, Amazon Web Services (AWS), CircleCI, Django, React
The most amazing...
...company I founded sold unique technologies to businesses across APAC, where I generated a 200% average YoY growth.
Work Experience
Full-stack Developer
2022 - PRESENT
BCG - Gamma
- Spearheaded a team of five engineers, re-building the whole data ingestion and process of core databases into a serverless microservice. Through this work, the team found many data issues and errors, reduced costs, and improved performance by 20x.
- Worked with multiple stakeholders to create a successful proof of concept of an innovative way to onboard new customers allowing the company to reduce the onboarding from 1-2 months to less than a week.
- Created new coding standards and improved the infrastructure, DevOps, and CI/CD pipelines with the team.
Technologies: Python, React, Databases, QA Testing, APIs, Amazon Web Services (AWS), Microservices, Serverless, Pytest, Amazon S3 (AWS S3), FastAPI, NumPy, Pandas, Algorithms, Linux, DevOps, CI/CD Pipelines, Software Architecture, Full-stack, Python API, Node.js, AWS Cloud Architecture, Technical Architecture, AWS Lambda, Solution Architecture, User Experience (UX), User Interface (UI)
Staff Software Engineer
2019 - 2022
Coreteam.io (BecauseMarket)
- Advanced to take charge of a three-month transformation project, leading the transition from Zendesk to PureCloud.
- Mentored and worked with two junior developers and engaged with stakeholders and vendors.
- Migrated back-end Python/Django systems and enhanced the React front end across three different applications.
- Designed the architecture and data model and delivered working systems with enhanced functionality prior to cutoff.
- Spearheaded a pivot to using feature flags, saving $60,000 in annual costs by implementing an open-source solution. The solution resulted in an increase in revenue and conversions with satisfactory company-wide adoption.
- Eliminated technical debt and improved code quality by coaching developers and performing code reviews.
- Improved performance by 15X, resulting in an elevated customer experience.
- Supported projects and code stability to produce high-quality, high-impact solutions that significantly impact the bottom line.
Technologies: JavaScript, React, Python, Django, Amazon Web Services (AWS), Kubernetes, HTML5, CSS, Shopify API, Docker, PostgreSQL, Ubuntu, GraphQL, Django REST Framework, Full-stack Development, Software Design, SQL, Web Scraping, APIs, API Integration, App Integration, Integration, Cloud, Google Cloud Platform (GCP), REST APIs, Database Migration, Back-end, Back-end Development, eCommerce, Redis, Front-end, Front-end Development, Responsive Layout, Responsive, Technical Leadership, Pytest, Amazon S3 (AWS S3), Algorithms, Linux, DevOps, CI/CD Pipelines, Software Architecture, Full-stack, Shopify, Python API, AWS Cloud Architecture, Technical Architecture, Solution Architecture, User Experience (UX), User Interface (UI)
Senior Software Engineer
2016 - 2019
Coreteam.io (Heart Media)
- Joined the organization during turbulent times. Single-handedly took ownership of all software products and tools and stabilized systems to ensure uninterrupted operations and prevent revenue loss.
- Overcame business constraints and focused on the longevity of the tech team, leading the sourcing and hiring of new international development and transition teams to tackle business needs.
- Built, maintained, and improved and re-wrote systems powering a $100 million advertising business, utilizing Python, Google, Node, Angular, and React and Dockerized system to run on AWS Kubernetes to ensure consistency and uninterrupted operation.
- Re-wrote the front end from Angular.js to React, improving overall code quality and speed and enabling the team to create multiple new features connected to increasing company revenue.
- Micro-serviced various applications to 5/6 REST micro-services enabling high throughput and performance.
Technologies: JavaScript, Node.js, Python, React, Angular, AngularJS, Amazon Web Services (AWS), Kubernetes, Docker, PostgreSQL, MongoDB, Ubuntu, Django, GraphQL, Django REST Framework, Full-stack Development, Software Design, SQL, APIs, API Integration, App Integration, Integration, Cloud, REST APIs, Database Migration, Back-end, Back-end Development, WebSockets, Express.js, MySQL, Redis, Front-end, Front-end Development, Responsive Layout, Responsive, Technical Leadership, Pytest, Amazon S3 (AWS S3), Algorithms, Linux, DevOps, CI/CD Pipelines, Software Architecture, Full-stack, Python API, AWS Cloud Architecture, Technical Architecture, AWS Lambda, Solution Architecture, User Experience (UX), User Interface (UI)
Senior Software Innovator
2014 - 2016
CoreTeam.io (Originate)
- Spearheaded a custom-developed automation project for the business, working closely with the CEO to create a solution that managed the entire consultancy independently and efficiently.
- Served as authority over technology, implementation, product, and Scrum, resulting in a platform that automated the business, increased software developer retention, and elevated resource planning.
- Built the product using MongoDB, Node.js for the back end, and Ember.js for front end.
- Delivered lectures, educated, and mentored the company on technology selections, and held a live coding session in the New York and San Francisco offices to help developers gain a quick start on Ember.
- Utilized an iterative and Agile process and independently turned the MVP into a full product.
- Hired a team of ten designers, UX/UI experts, developers, project managers, DevOps professionals, and testers.
- Interacted with company stakeholders, spanning finance, operations, management, product, marketing, developers, and designers, to complete automation across hour reporting, employee satisfaction, billing, and resource planning.
- Tested and launched the product with current use by 160 engineers–the platform is still being used today!
Technologies: JavaScript, Ember.js, Ember CLI, MongoDB, Node.js, Ubuntu, Python, Full-stack Development, Software Design, SQL, APIs, API Integration, Cloud, REST APIs, Database Migration, Back-end, Back-end Development, WebSockets, Express.js, Redis, Front-end, Front-end Development, Responsive Layout, Responsive, Technical Leadership, Amazon S3 (AWS S3), Algorithms, DevOps, CI/CD Pipelines, Software Architecture, Full-stack, Python API, Technical Architecture, Solution Architecture, User Experience (UX), User Interface (UI)
Co-founder
2010 - 2014
SafeWallet (SBSH)
- Co-founded and managed a spinoff of SafeWallet SBSH, a password manager providing a secure and easy way to store your passwords and online identities.
- Hired, led, and mentored a team of developers and ensured successful end-to-end execution of projects in alignment with business and revenue goals. Efforts led to an offer and successful company acquisition.
- Re-designed and re-wrote SafeWallet from the ground up as a spinoff of SafeWallet SBSH, utilizing strong technical acumen to learn Android code and develop a new fragment-based tablet version for download on Google Play.
- Utilized an FF extension and IE/Chrome browser extensions using C++. JavaScript, Backbone.js, HTML/5, Ajax, and C#, propelling the user base to 70K.
- Built PHP/Django-Python, and JavaScript, HTML, jQuery eCommerce sites from code to performance, adding new features, including cart, user management, and newsletters which resulted in increased sales and customer satisfaction.
Technologies: C++, JavaScript, Angular, CSS, Java, Android, Symbian, Ubuntu, Full-stack Development, Software Design, SQL, APIs, API Integration, Integration, Cloud, REST APIs, Database Migration, Back-end, Back-end Development, MySQL, Front-end, Front-end Development, Algorithms, Azure DevOps, CI/CD Pipelines, Software Architecture, Full-stack, Node.js, Technical Architecture, Solution Architecture, User Experience (UX), User Interface (UI)
Senior Software Engineer and Technology Consultant
2007 - 2010
Freelance
- Served as trusted advisor and knowledge resource, providing support to clients and agencies on the selection, implementation, and enhancement of internet and software solutions.
- Hired and oversaw two developers and managed business development, including investor engagement, partnerships, strategic planning, and new deals.
- Re-designed, re-wrote, and optimized content, features, ad-words, and Salesforce integration using PHP-Zend.
- Provided full technical support on all website integration, leading to the close of three significant deals.
- Collaborated with advertising agencies and customers to code games in a proprietary system and develop browser plugins for the machine learning system, ensuring end-to-end customer satisfaction.
- Utilized jQuery, JavaScript, and C# to develop trade sites, tools, and apps, generating $6,000/month.
Technologies: JavaScript, C++, Python, jQuery, C#, PHP, Ubuntu, Django, Full-stack Development, Software Design, SQL, APIs, API Integration, REST APIs, Back-end, Back-end Development, MySQL, Front-end, Front-end Development, Software Architecture, Full-stack, Node.js, Technical Architecture, Solution Architecture, User Interface (UI)
Founder
2003 - 2007
Adaptic
- Founded and managed the software development organization, providing customers with support around C++, C#, JavaScript, and HTML.
- Handled pre-sales activities, including writing scripts and network and web testing.
- Presented and sold unique technologies to a wide range of businesses across APAC and directed a multifaceted team of four comprised of administration staff, an engineer, and a sales expert, ensuring alignment with company and client goals.
- Recognized for generating a 200% average YoY growth.
Technologies: JavaScript, C++, Ubuntu, Full-stack Development, Software Design, SQL, APIs, API Integration, Front-end, Front-end Development
Experience
SafeWallet
A password manager providing a secure and easy way to store your passwords and online identities, running in Internet Explorer, Firefox, and Chrome on multiple mobile devices and operating systems. It enables users to safely and securely manage their online identities.
Education
1996 - 2000
Bachelor's Degree in Computer Science
Open University - Israel
Skills
Libraries/APIs
React, Node.js, REST APIs, Shopify API, jQuery, Django ORM, Beautiful Soup, Python API, NumPy, Pandas
Tools
IntelliJ IDEA, CircleCI, ChatGPT, Pytest, OpenAI Gym
Languages
Python, JavaScript, HTML, HTML5, CSS, C++, GraphQL, SQL, TypeScript, Java, C#, PHP, C++17
Paradigms
DevOps, Responsive Layout, Responsive, Serverless Architecture, Microservices, Lambda Architecture, Azure DevOps
Storage
Databases, MongoDB, PostgreSQL, Google Cloud, Database Migration, Redis, MySQL, Amazon S3 (AWS S3)
Industry Expertise
Project Management
Frameworks
Django, Angular, AngularJS, Django REST Framework, Express.js, Scrapy, Ember.js, Serverless Framework, Next.js
Platforms
Amazon Web Services (AWS), Kubernetes, Docker, Google Cloud Platform (GCP), Linux, Shopify, Ubuntu, Android, Symbian, AWS Lambda
Other
Software Engineering, Full-stack, Full-stack Development, Software Design, APIs, API Integration, App Integration, Integration, Architecture, Back-end, Back-end Development, Front-end, Front-end Development, Technical Leadership, System Architecture, CI/CD Pipelines, Software Architecture, AWS Cloud Architecture, Technical Architecture, Solution Architecture, Ember CLI, Web Scraping, Cloud, Progressive Web Applications (PWAs), WebSockets, eCommerce, FastAPI, SaaS, Algorithms, PDF Scraping, User Experience (UX), User Interface (UI), Serverless, QA Testing, Lambda Functions, OpenAI GPT-4 API, OpenAI GPT-3 API, LangChain, Generative Pre-trained Transformer 3 (GPT-3), Generative Pre-trained Transformers (GPT), Artificial Intelligence (AI)
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