Daniel Ivanov, Full-stack Web Developer in Moscow, Russia
Daniel Ivanov

Full-stack Web Developer in Moscow, Russia

Member since June 8, 2016
Daniel has been helping startups and small companies bring innovative products to market for over a decade with best-of-breed HTML/CSS, JS, Python, and C# pieces, most recently as an independent software development consultant. Daniel wields his technical and managerial experience to maximum effect, values proactivity and results, and enjoys a "roll up the sleeves and get it done" working approach.
Daniel is now available for hire


  • NDA (via Toptal)
    Amazon Web Services (AWS), Docker Compose, Docker, AWS, Stripe, SendGrid...
  • Binology
    Amazon Web Services (AWS), Microservices, AWS, Nginx, Sentry, PostGIS...
  • HealCo (via Toptal)
    Amazon Web Services (AWS), AWS, Stripe, SendGrid, MySQL, Koa, Node.js, Antd...



Moscow, Russia



Preferred Environment

Git, JetBrains Rider, WebStorm, PyCharm, Ubuntu

The most amazing...

...technically advanced and compelling application I've played a role in bringing to life was a social media platform developed at Bubbleflake.


  • Back-end Developer

    2020 - PRESENT
    NDA (via Toptal)
    • Joined the company's founder who, while being technical himself, lacked skills and resources required to help get existing groundwork out the door as a full-fledged product.
    • Designed the approach to combine existing front-end pieces together with a yet-to-be-created back end as a consolidated app.
    • Built a consolidated app Node.js-based back end from the ground up including but not limited to email-based and social auth as well as Stripe integration for subscription management.
    • Implemented an approach to application deployment on AWS involving EC2 and RDS services which leveraged Docker Compose as well as uptime and error monitoring services.
    • Advised the founder on technology decisions and best development practices.
    Technologies: Amazon Web Services (AWS), Docker Compose, Docker, AWS, Stripe, SendGrid, MySQL, Express.js, Node.js, SCSS, EJS, JavaScript
  • Head of SaaS

    2019 - PRESENT
    • Entered the C-suite of a small eco-startup targeting a global market of smart trash bins.
    • Participated in various business activities including but not limited to new hires and presenting product at expos.
    • Took over the existing SaaS codebase and directed its further development.
    • Incorporated various stakeholders' input into consistent SaaS development strategy employing best industry practices: code reviews, CI/CD, and DevOps.
    • Involved and supervised contractors to handle workload.
    Technologies: Amazon Web Services (AWS), Microservices, AWS, Nginx, Sentry, PostGIS, PostgreSQL, Docker Hub, Docker Compose, Docker, Twisted, Django REST Framework, Django, Python, CSS, HTML, JavaScript
  • Senior Full-stack Web Developer

    2019 - 2019
    HealCo (via Toptal)
    • Joined the Toptal team backing the creation of the technology behind Healtor, a medical office timeshare marketplace targeting the US market.
    • Collaborated with another Toptal developer on end-to-end delivery of the company's product MVP employing best industry practices: code reviews, CI/CD, and DevOps.
    • Built the bulk of application functionality soup to nuts, from user facing elements to database access layer.
    • Advised stakeholders on technology decisions and solution feasibility.
    • Worked closely with the whole team including project manager, designer, and customer executives to fine-tune the value delivery stream, team collaboration options, tools, and processes.
    Technologies: Amazon Web Services (AWS), AWS, Stripe, SendGrid, MySQL, Koa, Node.js, Antd, SCSS, CSS, React, JavaScript
  • Independent Contractor: Senior Specialist, Developer

    2018 - 2018
    Bubbleflake Corporation
    • Joined the startup team behind Bubbleflake, a social media platform that protects free speech, lets advertisers and influencers engage audiences, and helps to keep brands safe.
    • Worked on end-to-end delivery of the company's platform toward its initial general availability release.
    • Delivered key features comprised of front-end SPA reusable componentry, platform microservices APIs, notifications system, embedded content, and many others.
    • Advised the founder on code quality and best development practices.
    • Worked closely with the founder and other stakeholders to ensure excellence of the value delivery process.
    Technologies: Azure DevOps, Azure Cosmos DB, Azure, Kubernetes, Docker, C#, ASP.NET Core, Microservices, JSDOM, Sass, TypeScript, JavaScript, Aurelia
  • React and Django Developer and Consultant

    2018 - 2018
    Civid (via Toptal)
    • Joined the small startup team behind an online debate platform to facilitate development efforts toward initial public release.
    • Delivered several key features over the course of two weeks to meet the tight deadline at the end of July 2018.
    • Delivered key features comprised of a tree structure for post replies, notifications system, universal post feed components, and data scraping from external sources.
    • Advised the CTO on code quality and best development practices.
    • Worked closely with the CTO to manage expectations in terms of scope and quality of work items.
    Technologies: Amazon Web Services (AWS), AWS, PostgreSQL, Django REST Framework, Django, Axios, Normalizr, Webpack, Bulma, Redux Thunk, Redux, React
  • Freelance Architect and Tech Lead

    2017 - 2018
    NDA (via Toptal)
    • Joined a small but well-established company to lead the tech stack modernization of a legacy ERP system for the construction industry.
    • Architected and implemented a Django-based REST API from the ground up which works with the legacy system's MS SQL database.
    • Designed and built a full-fledged responsive React-based single-page application (SPA) which consumes the API and exceeds legacy client app capabilities.
    • Established a Docker-based delivery process for both front-end and back-end with high transparency thanks to many integrations available in Slack.
    • Worked closely with business, tech, and operations leaders to ensure excellence in the value delivery process.
    Technologies: Docker Hub, Docker Compose, Docker, Heroku, Selenium, Django REST Framework, Django, Python, Express.js, Node.js, Redux Thunk, Redux, React, JavaScript, CSS, HTML
  • Software Development Consultant

    2016 - 2017
    Lime Global (via Toptal)
    • Joined an insurtech startup to help create an innovative platform for insurance product delivery over the internet and worked on various areas of the end-to-end development process.
    • Developed several back-end services in a REST paradigm and common infrastructure of the platform based on a microservices approach using ASP.NET Core.
    • Worked with teammates on client-facing MVC web applications representing end-user products which leveraged the platform's back-end services.
    • Took care of DevOps activities including implementing full-fledged CI and CD processes for delivery of products based on the platform using Docker and VSTS.
    • Worked closely with the whole team including project managers, designers, and even executives to fine-tune team collaboration options, tools, and processes.
    Technologies: Visual Studio Team Services (VSTS), Agile, MySQL, SQLite, Azure, Amazon Web Services (AWS), Selenium, Consul, Nomad, Docker, Webpack, Sass, TypeScript, JavaScript, OpenID, xUnit, C#, Nancy, Entity Framework Core, ASP.NET Core
  • Lead Full-stack Web Developer

    2016 - 2016
    Federal Investment Bureau (via Toptal)
    • Built a full-fledged web application (SPA + API) from scratch for a real estate startup.
    • Worked closely with stakeholders using an Agile approach for effective expectations management.
    • Implemented the front-end in SPA fashion using Angular 2 web framework and CesiumJS SDK for 3D earth maps.
    • Created a Django-based REST API for both front-end and mobile clients deployed to Heroku.
    Technologies: Cesium.js, PostgreSQL, Heroku, Django REST Framework, Django, Python, Node.js, Angular, TypeScript
  • Co-founder/CTO

    2015 - 2016
    Become Racer
    • Partnered with a motorsports expert to create an online competition platform for motorsport fans where they can contest for real-world prizes in motorsports domain.
    • Built the MVP of the platform from the ground up.
    • Carried out a few iterations of user testing of the MVP before the launch, collecting feedback and enhancing the MVP.
    • Actively participated in the MVP's launch, marketing and executing a few competition rounds and making sure that all bases are covered in terms of technology.
    Technologies: Auth, Amazon Web Services (AWS), PostgreSQL, Bootstrap, IoC, Autofac, Selenium, NHibernate, ASP.NET MVC
  • Deputy CTO

    2009 - 2016
    FB Media Solutions
    • Started as a senior developer and worked my way up to deputy CTO position in a small product company in digital publishing area targeting global market.
    • Coordinated development activities in the department, managed the team, and worked on improving the developers’ workspace, infrastructure, and tool set. Actively contributed to the creation of a custom solution for one of the clients, consisting of Android and iOS apps and a Django-based back end.
    • Managed development activities and team members, leading existing solutions maintenance. Worked with the team to create the core component of the company's new product, a content delivery platform for mobile devices.
    • Contributed crucial development efforts toward a company's new B2B solution for digital publishing, which was implemented as desktop software and is still the market leader.
    • Led the creation of the continuous delivery process which also assisted the team in following engineering best practices. Worked closely with technical support for the solution and solved a ton of customers' issues. Built several full-fledged libraries and developer tools for internal usage.
    Technologies: Amazon Web Services (AWS), ASP.NET MVC, jQuery, HTML/CSS, JavaScript, DotTrace, NUnit, CruiseControl, Windows Presentation Foundation (WPF), C#, AWS, PostgreSQL, Twitter, Bootstrap, Selenium, NHibernate, ASP.NET Web API, Espresso, JUnit, Android API, Java, Celery, Django REST Framework, Django, Python
  • Team Lead

    2006 - 2009
    ELCO Technologies
    • Started as a junior developer and worked my way up to team leader position in a small software development agency.
    • Managed the team and development activities in a business process automation department. Led the maintenance of existing business process automation solutions.
    • Maintained several company solutions for business process automation. Designed and developed a number of modules for an in-house platform for creation of ERP systems.
    • Developed several features of an in-house platform for the creation of ERP systems for small businesses and government agencies.
    Technologies: XPath, XSLT, XML, TeamCity, SQL, WinForms, ADO.NET, C#


  • HealCo Platform (Development)

    As a senior full-stack web developer, I was part of the Toptal project team paving the way for technology foundation behind HealCo.

    I joined early and fleshing out most of the system was my direct responsibility. I even was the only dev on the project for a while, moving product forward when my colleagues were unavailable.

  • Lime Platform (Development)

    As a software development consultant, I had a chance to team up with other industry experts to figure out a new way for insurance enabled by modern technology.
    I was right in the middle of the process which yielded the platform company builds their products on now.

  • Personal Website (Other amazing things)

    My personal business card website is built with React leveraging Next.js framework; it scores 85+ for mobile and 90+ for desktop on Google PageSpeed Insights.

  • FlippingBook Online (Development)

    As a deputy CTO at FB Media Solutions, I worked with the team to create the core component of this online digital publishing SaaS-solution.

    The core component we built was responsible for actually transforming a user's content into a final publication, which the user was then able to share and use easily.

  • Osborne Books Students Mobile Apps (Development)

    As a deputy CTO at FB Media Solutions, I actively participated in the creation of this solution for Osborne Books students, consisting of Android and iOS apps and a Django-based back end.

    Mobile apps were used by students to access educational content easily while the back end was mostly responsible for connecting the dots between Osborne Books' systems and the company's digital publication groundwork.

  • Ready Mobile Apps (Development)

    As a team leader at FB Media Solutions, I worked with the team to create the core component of this online content delivery platform for mobile devices.

  • FlippingBook Publisher (Development)

    As a senior developer at FB Media Solutions, I was a crucial member of the development team of this solution for digital publishing implemented as desktop software.

  • Enhanced Git Flow Explained (Publication)
    Git provides basic branching operations, but advanced patterns are left up to the user. The popular "Git flow" branching model helps, but can also complicate some common procedures. Thankfully, a new variation retains the benefits, while streamlining everyday work.
  • How to Improve ASP.NET App Performance in Web Farm with Caching (Publication)
    Caching is a powerful technique for increasing performance, but the whole idea behind caching works only as long as the result we cached remains valid. And here we get to the hard part of the problem: How do we determine when a cached item has become invalid and needs to be recreated? In this article, Toptal Freelance Software Engineer Daniel Ivanov provides an ASP.NET-based solution to replace invalid cached items and assure high throughput and performance of web applications designed to handle a high load.


  • Languages

    HTML, CSS, JavaScript, Python, C#, Python 3, ECMAScript (ES6), TypeScript, SQL, Bash, HTML5, XML, XSLT, XPath, SCSS, Java, HTML/CSS, Sass, CSS3
  • Frameworks

    Django, .NET, ASP.NET MVC, NUnit, Bootstrap 3+, ASP.NET, Bootstrap, Angular, Windows PowerShell, ASP.NET Core, .NET Core, Redux, Selenium, Entity, Django REST Framework, Aurelia, Entity Framework Core, Nancy, Bulma, Koa, Twisted, JUnit, Windows Presentation Foundation (WPF), Flask, NHibernate, ADO.NET, ASP.NET Web API, Express.js
  • Libraries/APIs

    REST API, REST APIs, Stripe API, Node.js, React, Backbone.js, jQuery, React Redux, JSON API, Stripe, Cesium.js, WinForms, OpenID, Auth, Normalizr, Antd, Android API, EJS, Vue.js
  • Tools

    Microsoft Visual Studio, PyCharm, Webpack, Docker Compose, Docker Hub, Azure DevOps Services, Jira, Vagrant, Git, TeamCity, WebStorm, JetBrains Rider, xUnit, Redux Thunk, Autofac, SendGrid, Sentry, Nginx, DotTrace, RabbitMQ, Celery, Docker Swarm
  • Paradigms

    Unit Testing, Automated Testing, Web Architecture, E2E Testing, REST, Agile, Microservices, Waterfall Development, Agile Software Development, DevOps, Scrum, Design Patterns, Test-driven Development (TDD), Continuous Integration (CI), Requirements Analysis, Continuous Delivery (CD), Microservices Architecture, Testing, Azure DevOps, Service-oriented Architecture (SOA), Event-driven Architecture, Database Design
  • Platforms

    Windows, AWS EC2, Linux, Docker, Ubuntu, Amazon Web Services (AWS), Twitter, Azure, Heroku, Kubernetes
  • Industry Expertise

    Web Development, Project Management
  • Storage

    JSON, AWS S3, AWS RDS, SQLite, Azure Cosmos DB, PostGIS, MySQL, MongoDB, PostgreSQL, Microsoft SQL Server, Redis
  • Other

    Code Reviews, RESTful APIs, Full-stack, APIs, WebSockets, CTO, Project Planning, Ajax, Containers, Team Leadership, Software Architecture, Nomad, Lean Startups, Technical Leadership, AWS, AWS Cloud Architecture, Axios, Visual Studio Team Services (VSTS), IoC, JSDOM, Espresso, CruiseControl, Consul, Semantic UI, OpenID Connect (OIDC), SaaS


  • Specialist's degree with distinction in Autonomous Instrumentation and Control Systems
    2003 - 2009
    Bauman Moscow State Technical University - Moscow


  • Angular Academy
    Toptal, LLC
  • React Academy
    Toptal, LLC
  • Transition to Management
    JULY 2017 - PRESENT
    Stratoplan Management School
  • Negotiations
    JULY 2017 - PRESENT
    Stratoplan Management School
  • IT Project Management
    JULY 2017 - PRESENT
    Stratoplan Management School
  • People Management
    JULY 2017 - PRESENT
    Stratoplan Management School
  • Agile Software Development (Requirements Analysis)
  • Web/IT Security ("Zero Security: A")
    JUNE 2015 - PRESENT

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