Alexandr Kobrin, Developer in Minsk, Minsk Region, Belarus
Alexandr is available for hire
Hire Alexandr

Alexandr Kobrin

Verified Expert  in Engineering

Full-stack Developer

Minsk, Minsk Region, Belarus

Toptal member since October 12, 2022

Expertise
Front-endFull-stackJavaScriptCSSREST APIHTML5Slack DevelopmentReact.jsGitMacOSReduxVisual Studio DevelopmentNode.jsJiraTypeScript
Bio

Alexandr is an experienced software engineer with a solid understanding of the best development practices. He can quickly investigate, evaluate, and adjust to new challenging contexts to lead a multicultural team toward effective and mutually beneficial solutions. In his over seven years of experience, he was a part of three successful companies leading the entire web development lifecycle on more than ten projects, ensuring high quality and fulfilling business and market needs.

Portfolio

GetMenthor
HTML, CSS, JavaScript, Node.js, React, PHP, MacOS, Visual Studio Code (VS Code)...
DashBouquet Development
JavaScript, TypeScript, Node.js, Redux, MacOS, Visual Studio Code (VS Code)...
Paprikash Studio
PHP, JavaScript, SQL, Slack, Front-end, CSS, Full-stack, HTML, APIs, Git, HTML5...

Experience

  • JavaScript - 8 years
  • Full-stack - 8 years
  • Git - 5 years
  • React - 5 years
  • Node.js - 4 years
  • Docker - 3 years
  • SQL - 3 years
  • TypeScript - 3 years

Availability

Part-time

Preferred Environment

MacOS, Visual Studio Code (VS Code), Slack, JavaScript, TypeScript, Node.js, React, Redux, Full-stack, Git

The most amazing...

...thing I've developed is an advertisement platform for interactive applications for screens used in public areas.

Work Experience

Menthor

2022 - PRESENT
GetMenthor
  • Created a learning roadmap for people from other areas to land their first job in IT.
  • Helped juniors and trainees boost their careers by reviewing their weak spots in the technical area.
  • Prepared mentees for upcoming technical interviews.
Technologies: HTML, CSS, JavaScript, Node.js, React, PHP, MacOS, Visual Studio Code (VS Code), Git, HTML5, Redux, Docker, Front-end, Full-stack, APIs, REST APIs, Next.js, Stripe, Vercel

Full-stack Developer | Team Lead | Tech Lead

2018 - 2022
DashBouquet Development
  • Designed and implemented a pipeline to collect and visualize a million records per day.
  • Optimized and reduced device network traffic by 30-100 times through data aggregation and compression.
  • Trained a neural network to perform highly accurate real-time age and gender estimation (98.5% for gender and 61% for age).
  • Innovated a math-based people-tracking algorithm for computer vision data, which allowed tracking of up to six persons in a frame without losing performance.
  • Created over 30 small and medium applications for interactive screens, with three complicated dashboards using React.
  • Developed three applications with 3D environments and physics using Three.js and WebGL.
  • Implemented a pipeline to generate custom Linux distribution kits with automatic installation, which saved about 30 minutes per set up.
  • Overhauled and reconfigured a production application's obsolete legacy source code, resulting in a two times faster deployment pipeline and increased development speed by an order of magnitude.
  • Spearheaded teams of 2-8 engineers with a combined project management role on three projects.
  • Interviewed over 50 candidates for engineering positions in the company, guided newcomers through the onboarding process, and prepared the first assignments.
Technologies: JavaScript, TypeScript, Node.js, Redux, MacOS, Visual Studio Code (VS Code), Slack, React, SQL, Python, Docker, NoSQL, Elasticsearch, Front-end, CSS, Full-stack, HTML, APIs, Material UI, WebAssembly (Wasm), Jira, REST APIs, Jest, Git, Amazon Web Services (AWS), CI/CD Pipelines, Continuous Integration (CI), Continuous Delivery (CD), HTML5, Graphviz, Kibana, Logstash, Redis, Firebase, ECharts, Next.js, Stripe, Vercel

Full-stack Developer

2017 - 2018
Paprikash Studio
  • Performed hundreds of adjustments and feature implementations with varying complexity for over 20 eCommerce projects.
  • Produced more than ten interactive, responsive, and SEO-friendly landing pages.
  • Designed and coded an application for management in production that helped save 1-2 hours a day for storekeepers.
  • Developed the front end of the web service for searching and buying tickets for buses, trains, and planes.
Technologies: PHP, JavaScript, SQL, Slack, Front-end, CSS, Full-stack, HTML, APIs, Git, HTML5, Firebase, Visual Studio Code (VS Code), REST APIs

Storekeeper

2015 - 2017
PromAgroPack-2007
  • Created internal web-based software for production process automation that seamlessly communicates with five different departments.
  • Created and maintained data structure for cardboard-manufacturing goods tracking.
  • Developed an excel-table for managing and keeping track of workwear clothes.
Technologies: PHP, SQL, HTML, JavaScript, CSS, HTML5, Visual Studio Code (VS Code), Front-end, Full-stack, APIs, REST APIs

Experience

Interactive Advertisement Platform

Developed the entire architecture for a platform that allowed the upload and management of interactive applications to TV screens in shopping malls, streets, etc. These apps used data from computer vision to show custom content that interacted with passersby, aggregated the data, and displayed meaningful statistics and recommendations to the customer in a personal dashboard.

Zero-trust Network Dashboard

https://portal.enclave.io/
Enclave built one-to-one connections that cloaked applications with invisible network-access gates. I made and maintained the dashboard (portal) to configure the network. While working with Enclave, I contributed to the project by creating well-written, adequately documented, and covered test-stable web applications for configuring the network.

Business Processes Visualizations Dashboard

https://datricks.com/
React-based dashboard for organizations to map, understand, and gain full visibility into their internal processes and related risks fast, automatically, and in real time, with 100% accuracy.

It is fully customizable, with multiple dynamic components that are different for each client, with many interactive charts and complex tables.

Education

2006 - 2009

Undergraduate Coursework in Civil Engineering

Brest State Technical University - Brest, Belarus

Certifications

APRIL 2021 - PRESENT

Data Science

Yandex

AUGUST 2019 - PRESENT

Machine Learning, Data Science and Deep Learning with Python

Udemy

JUNE 2018 - PRESENT

MERN Stack Front To Back: Full Stack React, Redux & Node.js

Udemy

Skills

Libraries/APIs

React, REST APIs, Node.js, OpenCV, TensorFlow, Keras, OpenAPI, D3.js, Stripe

Tools

Slack, Git, Jira, Kibana, Graphviz, Logstash

Languages

JavaScript, CSS, HTML, HTML5, TypeScript, SQL, PHP, Python

Frameworks

Redux, Cypress, Material UI, Jest, Next.js

Platforms

MacOS, Visual Studio Code (VS Code), Docker, Firebase, Amazon Web Services (AWS), Vercel

Storage

Elasticsearch, NoSQL, MongoDB, Redis

Paradigms

Continuous Integration (CI), Continuous Delivery (CD)

Other

Front-end, Full-stack, APIs, ECharts, GitHub Actions, OpenID Connect (OIDC), Data Science, Data Analysis, CI/CD Pipelines, WebAssembly (Wasm)

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring