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  1. Freelancers

Ruslan Hamzin

Offer Ruslan work on your next project.

Ukraine Kyiv, Ukraine
1 hour 55 minutes back
Available for hire available for hire
on the service 3 years
Client profile
  • mongodb
  • web developer
  • express.js
  • Sentry
  • ELK
  • Nestjs
  • Redis / PostgreSQL / MySQL
  • Backend development
  • Docker / Docker compose
  • telegram bot
  • Node.js
Freelancer Ruslan H. — Ukraine, Kyiv. Core skill — Web Programming, Javascript and Typescript

Rating

Successful projects
No data
Average rating
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Rating
260
Web Programming
2134 place out of 6423
Javascript and Typescript
883 place out of 3450

Language proficiency level

Українська Українська: fluent
English English: intermediate

Skills and abilities

Programming

Portfolio


  • Backend Developer

    Javascript and Typescript
    • Develop and integrate RESTful API features using Node.js (Express.js & NestJS).
    • Integrate Sentry to automated error tracking and performance monitoring
    • Configure logging with ELK stack
    • Develop custom Telegram bots from scratch, handling everything from basic automation to complex integrations with the Telegram API
    … • Provide technical support to clients by identifying and resolving system errors.
    • Integrate different third-party APIs to Node.js app

  • Backend Developer in Traff Group

    Javascript and Typescript
    Collaborated closely with developers, QA engineers, and DevOps specialists to enhance and maintain RESTful backend systems built with Node.js, including solutions with microservice architecture. Followed software engineering best practices such as OOP and SOLID principles to write clean, maintainable, and testable code.

    Responsibilities included:
    - Support of existing Node.js and NestJS apps with microservice architecture
    … - Implement new features based on business requirements and technical specifications
    - Apply OOP and SOLID principles to design scalable and decoupled modules
    - Participate in code reviews and refactoring code
    - Write unit, integration, and end-to-end tests to ensure code reliability and maintainability
    - Configure error logging, monitoring, and performance profiling using Sentry

  • Backend Developer in DiA

    Javascript and Typescript
    Worked as part of a backend team on the development of a REST API for an e-commerce marketplace. Focused on implementing new modules, improving existing ones, and enhancing overall system performance. Actively collaborated with team members to deliver reliable and scalable backend functionality.

    Responsibilities included:
    • Develop and integrate new RESTful API features using Node.js
    … • Optimize MongoDB queries and improve data structure to enhance database performance
    • Implement WebSocket (Socket.IO) support in a multi-threaded cluster environment to enable real-time communication
    • Analyze backend performance bottlenecks and implement improvements to reduce latency and increase responsiveness

Activity

  Latest proposals 1
Need a developer Nodejs, Nestjs + MongoDB & Postgre
58 USD