Vladimir is available for hire
Hire VladimirVladimir Kirienko
Verified Expert in Engineering
TypeScript Developer
Tomar, Portugal
Toptal member since May 15, 2014
Bio
Vladimir is a seasoned software engineer with more than a decade of experience. He is one of those programmers who discovered their passion for coding young and whom others call talented. Though Vladimir has accumulated a great deal of knowledge (both academic and hands-on) over the years, he never stops learning and is always happy to teach others.
Portfolio
Talking Scripts Limited
React, Node.js, JavaScript, Front-end, HTML, CSS, TypeScript...
Endeavor - Streaming DBA Dice Technology
React, React Native, TypeScript, Java, Amazon Web Services (AWS)...
AI Lending Technology LLC
Architecture, Front-end, Web Development, Full-stack, Azure, C#, .NET...
Experience
- TypeScript - 9 years
- React - 8 years
- REST APIs - 8 years
- Node.js - 8 years
- Sass - 8 years
- Rust - 5 years
- Team Leadership - 4 years
- Fractional CTO - 3 years
Work Experience
Web App Architect/Developer
2025 - 2026
Talking Scripts Limited
- Architected and developed an admin panel web app from scratch to production deployment.
- Accomplished an extremely stable app behavior without any regression issues by establishing a well-rounded architectural approach and CI/CD pipelines, which allowed extensive use of AI tools.
- Oversaw the launch process, resulting in securing essential contracts/partnerships.
Technologies: React, Node.js, JavaScript, Front-end, HTML, CSS, TypeScript, Artificial Intelligence (AI), AI Integration, AI Tools, Claude, Fractional CTO, Business Requirements, Solution Design, Stakeholder Interviews, System Integration, GitHub Actions, Claude Code, Technical Architecture, Functional Programming, CTO, Software Development, Fuzz Testing
Lead Front-end Engineer
2024 - 2025
Endeavor - Streaming DBA Dice Technology
- Maintained and developed new features for a huge existing codebase as part of an enterprise team.
- Introduced code quality checks and helped resolve existing issues in legacy code.
- Designed flexible, highly customizable UIs for a white-label streaming platform.
Technologies: React, React Native, TypeScript, Java, Amazon Web Services (AWS), Video Streaming, Streaming, GraphQL, Front-end, JavaScript, White Labeling, Jest, Jira, Engineering Management, Solution Architecture, Requirements Analysis, Business Analysis, Team Management, Fractional CTO, Business Requirements, Solution Design, Stakeholder Interviews, System Integration, GitHub Actions, Technical Architecture, Functional Programming, Software Development, Fuzz Testing
Co-lead Solution Architect
2024 - 2024
AI Lending Technology LLC
- Developed the front-end application with custom architecture tailored to the customer's use case.
- Provided guidance on API development, database, and web services implementation.
- Analyzed product requirements and translated them into technical specifications.
Technologies: Architecture, Front-end, Web Development, Full-stack, Azure, C#, .NET, Leadership, Minimum Viable Product (MVP), Mortgages, API Integration, Single Sign-on (SSO), Figma, Back-end, Finance, Tailwind CSS, Full-stack Development, Jest, Vite, Jira, Engineering Management, Notion, Azure DevOps, Terraform, Automation, Integration, Product Management, WebSockets, Solution Architecture, Requirements Analysis, Business Analysis, Team Management, Fractional CTO, Business Requirements, Solution Design, Stakeholder Interviews, System Integration, GitHub Actions, Technical Architecture, Functional Programming, CTO, Back-end Development, Software Development, Fuzz Testing
Front-end Team Lead
2023 - 2024
Urbint
- Developed an architecture for the new front end focusing on reliability, maintainability, and integration with legacy codebase. The architecture proved to be very robust and met all client requirements.
- Trained and managed a team of front-end developers to maintain and extend the new front-end app architecture. They eventually continued maintaining the application and keeping the code quality high without my support.
- Coordinated the work between front-end, back-end, and product teams. Feature development was streamlined, and many potential issues were caught early, preventing delays.
Technologies: React, Front-end, JavaScript, Technical Leadership, GraphQL, TypeScript, Test-driven Development (TDD), Docker, Single Sign-on (SSO), Figma, Minimum Viable Product (MVP), Tailwind CSS, Jest, Jira, Engineering Management, Next.js, Solution Architecture, Requirements Analysis, Business Analysis, Team Management, Solution Design, Stakeholder Interviews, System Integration, GitHub Actions, Zod, PostHog, Technical Architecture, Functional Programming, Software Development
Front-end Developer
2023 - 2023
Garfield Pearson
- Improved and extended the existing Angular front-end codebase.
- Introduced a new components UI system based on Material UI.
- Supported .NET back-end development and integrated the provided API endpoints.
Technologies: TypeScript, Angular, Angular Material, .NET, Software Development
Lead Front-end Developer for a Responsive Web Tool
2020 - 2022
Steady Platform, Inc
- Developed the SPA architecture based on a strict type-safe functional approach and built the app from scratch.
- Established a set of best practices for a high level of code quality. As a result, the code was reliable and easy to maintain and refactor.
- Trained and managed the front-end team to keep the codebase well maintained and highly stable.
Technologies: .NET, Amazon Web Services (AWS), MongoDB, React, TypeScript, CSS3, HTML5, JavaScript, Sass, Architecture, Front-end, C#, Unit Testing, React Redux, CI/CD Pipelines, SQL, Full-stack, CSS, APIs, Single-page Applications (SPAs), Front-end Development, Team Leadership, Software Architecture, Dashboards, Web Development, Agile, Software Design, Leadership, ASP.NET, SaaS, Product Leadership, User Interface (UI), Data Visualization, Charts, Interactive UI, Git, CQRS, Redux, Automated Testing, .NET Core, GitHub, REST APIs, Responsive UI, Technical Leadership, Test-driven Development (TDD), Docker, Single Sign-on (SSO), Figma, Minimum Viable Product (MVP), Finance, Tax Systems, Tailwind CSS, Cloudflare, Jest, Vite, Jira, Engineering Management, Automation, Integration, Solution Architecture, Requirements Analysis, Business Analysis, Team Management, Solution Design, Stakeholder Interviews, System Integration, Technical Architecture, Functional Programming, Software Development
Angular Consultant | Stability and Performance Improvements
2020 - 2020
ADS Environmental Services / IDEX Corp.
- Refactored an existing Angular-based web platform codebase with a lot of underperforming legacy code accumulated over multiple years and many contractors.
- Integrated new features seamlessly into the platform and reduced the complexity and reliability of the existing code due to the refactoring.
- Discovered and fixed multiple systemic issues with the codebase, significantly improving platform stability and reliability.
- Achieved significant performance improvements after refactoring components and dealing with large amounts of data.
- Trained the team on patterns and practices to maintain the app stability and performance improvements.
Technologies: Angular, TypeScript, JavaScript, Highcharts, CSS, Single-page Applications (SPAs), Angular Material, Front-end Development, Team Leadership, Software Architecture, Dashboards, Web Development, Agile, Software Design, Leadership, SaaS, Product Leadership, User Interface (UI), Data Visualization, Charts, Interactive Maps, Interactive UI, Git, Automated Testing, .NET Core, GitHub, Geospatial Data, REST APIs, Responsive UI, Technical Leadership, Test-driven Development (TDD), Real-time Data, Single Sign-on (SSO), Jest, Jira, Requirements Analysis, Team Management, Software Development
Lead, Senior Front-end Developer
2016 - 2020
Sweet
- Developed and maintained three subsequent versions of a client-facing admin web app interface for managing and monitoring cross-network social content, products, payments, and user statistics with client user bases of up to millions of users.
- Worked on two versions of a user-facing web app with social content from multiple networks, a product store with payments and an internal "coin-based" currency system.
- Developed the front end for an online real-time quiz-like game (as part of the web app) with timing-sensitive content and video streaming.
Technologies: RxJS, Highcharts, Sass, HTML5, Angular, TypeScript, JavaScript, CSS3, Architecture, Front-end, AngularJS, React, Unit Testing, CI/CD Pipelines, SQL, CSS, APIs, Single-page Applications (SPAs), Angular Material, Front-end Development, PostgreSQL, Material UI, API Development, Team Leadership, Software Architecture, Node.js, Dashboards, Web Development, Agile, Software Design, Leadership, SaaS, User Interface (UI), Data Visualization, Charts, Interactive UI, Git, MongoDB, CQRS, Automated Testing, Design Systems, GitHub, Amazon Web Services (AWS), Startups, REST APIs, eCommerce, Mailchimp, Stripe API, NgRx, Responsive UI, Technical Leadership, GraphQL, Test-driven Development (TDD), Single Sign-on (SSO), Figma, Jest, Jira, Solution Architecture, Requirements Analysis, Marketplaces, Team Management, Zod, Stripe, Software Development
Lead, Senior Software Engineer | Telecommunication
2014 - 2016
MetTel.net
- Implemented a rich and responsive UI using Knockout.js.
- Designed an API module for processing, retrieving, saving, and validating data.
- Worked with a Microsoft SQL database to provide a fast response of aggregated data over multiple large tables.
- Created several reusable Knockout.js-based controls.
- Maintained and improved the existing codebase. Added new features.
Technologies: JavaScript, HTML, CSS, .NET, Microsoft SQL Server, Knockout (Knockout.js), ASP.NET Web API, CSS3, HTML5, TypeScript, Front-end, Angular, C#, Sass, C#.NET, ASP.NET MVC 4, Unit Testing, jQuery, SQL, Full-stack, REST APIs, APIs, Angular Material, Front-end Development, API Development, Web Development, Agile, SaaS, User Interface (UI), Data Visualization, Charts, Interactive UI, Git, Design Systems, .NET Core, MySQL, GitHub, Test-driven Development (TDD), Single Sign-on (SSO), Back-end, Full-stack Development, Jira, Telecommunications, Team Management, Back-end Development, Software Development
Software Developer
2013 - 2014
Velvetech, LLC
- Helped create a management and marketing system for health clinics.
- Built a desktop application for call center operators with Twilio integration.
- Maintained an extensive and complex project with web and desktop functionality and many communication and integration modules.
Technologies: Windows Presentation Foundation (WPF), ASP.NET MVC, CSS3, HTML5, JavaScript, .NET, Front-end, C#, TypeScript, Sass, C#.NET, Unit Testing, jQuery, SQL, Full-stack, REST APIs, CSS, APIs, Front-end Development, API Development, Web Development, Agile, ASP.NET, SaaS, User Interface (UI), Interactive UI, Git, .NET Core, GitHub, Test-driven Development (TDD), Back-end, Full-stack Development, WebSockets, Telecommunications, Back-end Development, Software Development
Desktop Application Developer
2010 - 2013
Freelance
- Developed various poker-related probability and statistics calculators for Windows.
- Developed real-time, heads-up displays for online poker players.
- Built real-time analysis systems and a poker game adviser.
- Created poker bots for online poker integrated with multiple online poker applications.
- Provided statistics accumulation and analysis systems for poker.
- Developed an online customer record-management system for dance studios.
- Developed a desktop application for score management of dance competitions with a rich UI.
Technologies: Web MVC, C#.NET, Web API, Windows Presentation Foundation (WPF), .NET, C++, C#, Unit Testing, Node.js, Software Design, User Interface (UI), Git, Express.js, GitHub, Quantitative Modeling, Software Development
Experience
Medical Management and Marketing Platform
A complex project with several web, desktop, and API integration modules and an extremely rich and customizable UI designed for US medical clinics and practices. It includes billing, integration with third-party medical software and databases, PBX integration, and much more.
Desktop Phone Panel
A desktop Windows application for call-center operators of health clinics with a rich UI, integration with a physical telecommunications device, and an enterprise PBX system. It involved handling multiple operator accounts on the same device and many devices on the local network with incoming calls balanced between them.
Dance Studio Manager
A system designed specifically for dance studio customer management, scheduling, and content management. It also includes marketing analysis, billing, other reports, and a rich web UI used by employees.
Custom Arduino-based Multi-rotor Controller
https://github.com/vv90/ArduinoQuadcopterA custom, written-from-scratch multi-rotor controller for the Atmega2560 chip and MPU6050 gyro/accelerometer. Intended to be an example project for reference and tutorials on Atmega2560 and MPU6050 integration, PID controller algorithm, and related coding techniques.
Social Content Marketplace
http://sweet.ioAn Angular-based marketplace web app for social content (posts, calls to action, surveys, etc.) aggregated from multiple social networks. Includes an in-house, token-based currency system for claiming rewards from partner brands and a real-time online quiz game/contest.
Social Content and Rewards Admin Panel
An admin panel for brand employees for the accompanying social content marketplace to manage hosted social content, products, and rewards. Handles billing and shipping, customer feedback and messaging, and financial and content reports/statistics.
Income/Tax Report Management Platform
A React-based web app for creating, managing, and sending verified income reports for social service programs and tax benefits. Integrates with provided bank accounts and gig platform accounts (like uber, amazon, etc.) to collect, filter, and combine into an income report.
Waste Water Management Monitoring and Analysis Platform
An Angular-based web platform for gathering and analyzing real-time data from water level, rainfall, and pipe flow sensors in a wastewater collection infrastructure. The data were combined into numerous automated analysis reports, charts, and alert notifications.
Angular Web App for Mining Rights Applications Management
Web application to manage applications for mining rights. It allows users to submit an application for a piece of land for mining, and the application goes through a process of validation, among other checks.
Education
2007 - 2011
Bachelor's Degree in Solid Body Mechanics
Novosibirsk State University - Novosibirsk, Russia
Skills
Libraries/APIs
React Redux, Node.js, React, REST APIs, API Development, NgRx, Zod, RxJS, Highcharts, Moment.js, Underscore.js, jQuery, Stripe API, Stripe, Web API, OpenLayers, WebGPU
Tools
Git, GitHub, Claude Code, Karma, WebStorm, Visual Studio 2010, Mailchimp, Figma, Jira, Terraform, Claude, Visual Studio, Slack, Notion
Languages
TypeScript, Sass, CSS, HTML, C#, CSS3, HTML5, JavaScript, Elm, GraphQL, Rust, F#, Haskell, SQL, C#.NET, C++, Python, Java
Frameworks
Angular, ASP.NET MVC 4, .NET, AngularJS, Knockout (Knockout.js), ASP.NET MVC 5, Angular Material, Material UI, Express.js, Redux, .NET Core, Tailwind CSS, Jest, Jasmine, Entity 5, Entity 6, Bootstrap 3+, ASP.NET Web API, Windows Presentation Foundation (WPF), ASP.NET, Bootstrap, React Native, Next.js, ASP.NET MVC, Bulma
Paradigms
Functional Programming, Unit Testing, Test-driven Development (TDD), Model View ViewModel (MVVM), Agile, CQRS, Automated Testing, Requirements Analysis, Fuzz Testing, Agile Software Development, Behavior-driven Development (BDD), Model View Controller (MVC), Azure DevOps, Automation, Computational Mechanics
Platforms
Docker, Windows, Visual Studio Code (VS Code), Azure, PostHog, Linux, Amazon Web Services (AWS), MacOS
Storage
MongoDB, MySQL, Microsoft SQL Server, JSON, PostgreSQL
Industry Expertise
Telecommunications
Other
Elm Architecture, Architecture, Front-end, Full-stack, Single-page Applications (SPAs), Front-end Development, Software Architecture, Dashboards, Web Development, Software Design, SaaS, Product Leadership, User Interface (UI), Data Visualization, Charts, Interactive Maps, Interactive UI, Design Systems, Startups, Responsive UI, Technical Leadership, Minimum Viable Product (MVP), API Integration, Back-end, Full-stack Development, Vite, Engineering Management, WebSockets, Solution Architecture, Marketplaces, Team Management, Fractional CTO, Bots, Business Requirements, Solution Design, Stakeholder Interviews, System Integration, GitHub Actions, Technical Architecture, Back-end Development, Software Development, CI/CD Pipelines, APIs, Team Leadership, Leadership, Geospatial Data, eCommerce, Embeddings from Language Models (ELMo), Real-time Data, Single Sign-on (SSO), Finance, Tax Systems, White Labeling, Cloudflare, Integration, Product Management, Business Analysis, Artificial Intelligence (AI), AI Integration, AI Tools, Quantitative Modeling, CTO, Web MVC, Finite Element Analysis (FEA), PID Controllers, Mortgages, Video Streaming, Streaming
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