Andrey Izotov, JavaScript Developer in Los Angeles, CA, United States
Andrey Izotov

JavaScript Developer in Los Angeles, CA, United States

Member since October 29, 2018
Andrey is a hands-on architect and full-stack developer specializing in the delivery of optimized solutions built with cutting-edge technologies. Zealous about TDD, he enjoys delivering maintainable systems with high test coverage. He produces reliable results, whether leading a team or working independently. Passionate about designing software systems, Andrey can provide a solution to satisfy your technical needs.
Andrey is now available for hire

Portfolio

Experience

Location

Los Angeles, CA, United States

Availability

Part-time

Preferred Environment

GitHub, Docker, MacOS, VS Code

The most amazing...

...project I've built is an interactive and animated tool for determining whether a radar reading was caused by an aircraft.

Employment

  • Senior Software Engineer

    2021 - 2021
    Zappos.com
    • Architected and delivered an eCommerce web front end.
    • Delivered accessibility improvements to an existing platform.
    • Increased the code quality of the existing platform by setting up testing and linting frameworks.
    Technologies: React, Material UI, Next.js, Ruby on Rails (RoR), Redux
  • CTO

    2020 - 2021
    NextSession
    • Designed and developed a complex full-stack web application.
    • Set up a deployment infrastructure with autoscaling and high availability (HA).
    • Set up continuous integration (CI) and continuous delivery (CD) pipelines.
    Technologies: React, GraphQL, Ruby on Rails (RoR), Material UI, PostgreSQL, Google Cloud Platform (GCP), Docker, Apollo, User Interface (UI), User Experience (UX), Continuous Integration (CI), Continuous Delivery (CD), Jest, Next.js
  • Software Architect

    2020 - 2021
    Anthem Blue Cross and Blue Shield
    • Architected and developed a component library for the web based on Material-UI.
    • Delivered a component library for mobile platforms.
    • Guided the development efforts of an offshore team.
    Technologies: React Native, TypeScript, Agile Software Development, Git, Test-driven Development (TDD), CSS, React, Material UI, User Interface (UI), User Experience (UX), Jest
  • Senior Software Engineer

    2020 - 2020
    AXA XL
    • Delivered a customized charting library, enabling developers to create charts while conforming to existing design standards easily.
    • Produced reusable React components for a private npm registry.
    • Built an interactive and engaging dashboard, allowing users to view and interact with KPIs.
    Technologies: User Interface (UI), User Experience (UX), Continuous Integration (CI), HTML, Azure DevOps, Git, Agile Software Development, JavaScript, Test-driven Development (TDD), D3.js, CSS, Redux, React, Jest
  • Senior Software Engineer

    2020 - 2020
    RavenOps
    • Produced a unique animation for determining whether an airborne object is an aircraft.
    • Delivered dynamic and static visualizations of weather data.
    • Improved the performance and clarity of existing code.
    • Massaged weather and aircraft track data, making it suitable for visualization.
    • Built experimental data visualization prototypes.
    Technologies: User Interface (UI), User Experience (UX), HTML, CSS, Git, Agile Software Development, JavaScript, TypeScript, Vue, OpenLayers, Canvas, D3.js, Jest
  • Senior Software Engineer

    2019 - 2020
    Megaphone, LLC
    • Delivered performance and UX improvements to a customer-facing dashboard.
    • Moved large chunks of a legacy multi-page application into the single-page application paradigm.
    • Implemented state-of-the-art testing practices.
    • Delivered a highly parallelized and dockerized application for forecasting orders.
    • Rewrote a slow legacy component as a new and optimized microservice.
    Technologies: Continuous Integration (CI), HTML, Object-oriented Programming (OOP), SQL, Git, Agile Software Development, JavaScript, Test-driven Development (TDD), Google Cloud Platform (GCP), Redis, PostgreSQL, Docker, Phoenix, Elixir, Ruby on Rails (RoR), Ruby, CSS, React, Jest
  • Software Engineer

    2016 - 2018
    Aspiration
    • Designed and delivered an SOA system for financial account opening and management.
    • Implemented a solution for processing and storage of PII and other sensitive data.
    • Built a mechanism for migrating users from one banking partner to another.
    • Optimized the performance via algorithm and query tuning, in one case reducing the job execution time from eight hours to under one second.
    • Delivered improvements to the internal admin portal.
    • Implemented a system for ingesting files from a banking partner.
    • Managed the application deployment and post-deployment verification.
    • Mitigated fraud by setting up a system for identity verification.
    • Tightened account security by implementing a 2FA solution.
    Technologies: Redis, AWS, CircleCI, Rancher, Continuous Integration (CI), HTML, Object-oriented Programming (OOP), Amazon Web Services (AWS), SQL, CSS, Git, Agile Software Development, JavaScript, Test-driven Development (TDD), GraphQL, Vault, Docker, RabbitMQ, PostgreSQL, Java, Python, Node.js, Redux, React, Ruby on Rails (RoR), Ruby, Jest, Twilio
  • Tech Lead

    2014 - 2016
    Honest
    • Increased the customer conversion rate by 10% by optimizing the performance and UX of a web-based checkout flow.
    • Enhanced an order management system with the capability to fulfill an order from multiple distribution centers.
    • Built and A/B tested experimental features on top of an existing platform.
    • Managed a cross-functional team of eight developers.
    • Ensured the application's performance by monitoring the system and delivering optimization patches.
    • Delivered UI and UX improvements to both customer-and admin-facing web applications.
    Technologies: Redis, User Experience (UX), User Interface (UI), AWS, New Relic, Continuous Integration (CI), HTML, Object-oriented Programming (OOP), Amazon Web Services (AWS), SQL, CSS, Git, Agile Software Development, JavaScript, Test-driven Development (TDD), CoffeeScript, MongoDB, Optimizely, RabbitMQ, PostgreSQL, AngularJS, Ruby on Rails (RoR), Ruby
  • Software Engineer

    2013 - 2014
    Fiksu, Inc.
    • Developed a customer-facing web portal for the management of advertising campaigns.
    • Crafted custom APIs and interactive data visualizations.
    • Designed and delivered rapid prototypes of web GUIs.
    • Expanded the functionality and improved the performance of administrative tools.
    • Improved API performance via database query tuning.
    Technologies: User Interface (UI), User Experience (UX), AWS, New Relic, Continuous Integration (CI), HTML, Object-oriented Programming (OOP), Datadog, Stripe, Amazon Web Services (AWS), SQL, CSS, Git, Agile Software Development, JavaScript, Test-driven Development (TDD), MySQL, Highcharts, jQuery, Ruby on Rails (RoR), Ruby

Experience

  • Weather Data Visualization

    Delivered an animation of wind currents and a visualization of reflectivity radar data, rendered on top of a world map. This allowed the end-user to see mission-critical data without leaving the host application.

  • Account Opening and Management System Implementation
    http://www.aspiration.com

    Designed and delivered an SOA system for opening and managing financial accounts. The system was comprised of third-party service integration points, background processing modules, and internal—and public-facing—APIs. The solution was delivered with more than 95% test coverage.

  • Checkout Flow Improvement
    http://www.honest.com

    Improved the checkout flow of an eCommerce application by rebuilding a multi-page Rails-views experience as a single-page application. The resulting performance and UX improvements accounted for a 10% conversion lift.

  • Podcast Advertisement Forecast Implementation
    http://www.megaphone.fm

    Built a solution for forecasting podcast advertisement downloads, which I did by creating traffic models and using them to generate episode download requests. These were, in turn, fed into an ad decision engine. The solution was delivered as a highly-parallelized, dockerized, and well-documented application with more than 95% test coverage.

  • Multistep Order Creation Wizard
    http://www.megaphone.fm

    Built a multi-step wizard for creating an advertisement order in a web UI. The solution was delivered as a composite of React components complete with animations, documentation, and more than 90% test coverage.

  • Updating a Legacy Front End
    http://www.megaphone.fm

    Updated a legacy front end, previously largely made up of jQuery and Rails views with React components. The update involved upgrading React from 15.6 to 16.8 and building numerous components, including, among others, modals, selectors, tables, and filters.

  • Astrology Chart Generator

    Built a web-based astrology chart generator that, given a spacial and temporal input, generates a graphical snapshot depicting positions of the planetary bodies. The snapshot was delivered in a printable format.

  • CellSim
    https://www.youtube.com/playlist?list=PLmatbM0gftCvPawO_vajHoLuAbIM_H_36

    Designed and developed an application for modeling mutations of living tissues, inspired by biological cell behavior. The simulation included cell division, death, mutation, movement, angiogenesis, metastasis, inter-cell signaling, and elimination of severely mutated (cancer) cells.

Skills

  • Languages

    JavaScript, Ruby, CSS, SQL, HTML, GraphQL, CoffeeScript, Elixir, TypeScript, Python, Java, C#
  • Frameworks

    Ruby on Rails (RoR), Redux, Jest, Phoenix, AngularJS, React Native, Material UI, Next.js, Alloy, Windows Presentation Foundation (WPF), ASP.NET Dynamic Data, Express.js
  • Libraries/APIs

    Highcharts, D3.js, React, jQuery, Stripe, Node.js, OpenLayers, Vue, XNA
  • Tools

    Git, Optimizely, CircleCI, Vault, RabbitMQ, Canvas
  • Paradigms

    Test-driven Development (TDD), Agile Software Development, Object-oriented Programming (OOP), Azure DevOps, Continuous Integration (CI), Continuous Delivery (CD)
  • Platforms

    Docker, New Relic, Rancher, Amazon Web Services (AWS), Google Cloud Platform (GCP), Twilio, Heroku
  • Storage

    MySQL, PostgreSQL, MongoDB, Redis, Datadog
  • Other

    AWS, User Experience (UX), User Interface (UI), Apollo, Computer Science

Education

  • Bachelor's Degree (Magna Cum Laude) in Computer Science
    2009 - 2013
    University of Massachusetts - Amherst, MA, United States

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