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Oleksandr – React, Node.js, JavaScript, experts in Lemon.io

Oleksandr

From Ukraine (GMT+3)

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Full-stack Web DeveloperMiddle-to-senior
Hire developer
9 years of commercial experience
Cybersecurity
Gambling
Healthtech
Media
Social media
Sports
Mobile apps
Platforms
Gaming software
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Oleksandr – React, Node.js, JavaScript

Oleksandr has more than 9 years of experience working on various projects involving a wide range of technologies, industries, and complexities. He specializes in JavaScript development and holds an AWS Solution Architect certification. His previous projects include developing a fitness coaching app, creating a gaming platform, and designing a remote storage solution. Just scroll down to see that this Developer is ready for all kinds of scenarios in all sorts of projects.

Main technologies
React
4 years
Node.js
4 years
JavaScript
7 years
Additional skills
AWS
MongoDB
Next.js
Typescript
PostgreSQL
HTML
GraphQL
Express.js
DynamoDB
Lambda
API Gateway
Amazon SQS
CSS
Amazon SNS
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Senior Full-Stack Developer
Oct 2022 - May 20236 months
Project Overview

It helps investors efficiently automate various tasks essential to their operations. Additionally, we strive to enable investment firms to manage their fund activities easily.

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Responsibilities:
  • Developed new system components;
  • Supported existing functionality;
  • Participated in developing architecture and application scaling.
Project Tech stack:
Node.js
Kubernetes
AWS
React
Next.js
Nest.js
PostgreSQL
Redis
Software Engineer
Jun 2021 - Oct 20221 year 4 months
Project Overview

A platform created for content creators and allows them to make and share videos, audio, and posts. They can also create posts and communicate with subscribers. The main features are the ability to create audio and video content easily and share it with subscribers. Apart from that, creators can have audio and video chats with them.

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Responsibilities:
  • Developed new system components;
  • Supported existing functionality;
  • Participated in developing architecture and application scaling.
Project Tech stack:
React
AWS
Typescript
Node.js
Software Engineer
Jan 2020 - Sep 20211 year 7 months
Project Overview

It provides services to allow fitness coaches to manage their clients. This platform has 2 interfaces: a dashboard web panel for coaches and a mobile application for clients.

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Responsibilities:
  • Was responsible for most of the payment system and integration with third-party services such as Stripe products;
  • Participated in developing new payments-related features, scaling database, and architecture.
Project Tech stack:
Node.js
React
GraphQL
Typescript
AWS
Stripe API
PostgreSQL
Redis
Docker
React Native
Software Engineer
Aug 2019 - Feb 20206 months
Project Overview

This is a huge gambling and gaming product. It allows users to bet in real time while watching. Also, it's a big sports news aggregator.

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Responsibilities:
  • Was responsible for developing new features, refactoring code, increasing system reliability, and supporting existing functionality;
  • Mentored software engineers.
Project Tech stack:
Angular
Node.js
JavaScript
Typescript
AWS
Software Engineer
Dec 2017 - Aug 20188 months
Project Overview

This remote storage solution not only encrypts personal or business information but also cuts it into tiny bits, encrypts each bit, and stores those bits (shards) over multiple remote locations. The main features are biometric authentication, which combines P2P (Peer to Peer) Networks with IPFS (InterPlanetary File System) to secure and encrypt data beyond Military Grade Standards.

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Responsibilities:
  • Developed new system components;
  • Participated in developing architecture and application scaling;
  • Mentored other engineers.
Project Tech stack:
React
AWS
PostgreSQL
MongoDB
Typescript
Node.js

Education

2017
Cybersecurity
Master's

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