Sr Engineer (Node.js with React) Stafnear $$$$

Madfish

Madfish

Software Engineering

Ukraine · Europe

Posted on May 10, 2026

A Sr Engineer is needed to join the development of a high-traffic web platform used by a broad customer base. The product ecosystem includes an AI-powered website builder, a customer management dashboard, and internal support tools.

This role is more focused on backend development with Node.js and TypeScript, but it also requires React experience so you can handle your frontend tasks independently rather than relying on a frontend developer.

Infrastructure and production environments are handled by a separate DevOps team, so your focus will remain on application development rather than production support or infrastructure management.

Responsibilities

  1. Design, develop, and maintain backend services throughout the full development lifecycle
  2. Assist with frontend implementation when needed to deliver product features
  3. Release new functionality and monitor feature stability after deployment
  4. Work closely with Product, Platform, and Reliability teams
  5. Contribute to technical improvements and enhancements within the existing architecture

Tech Stack

Node.js, TypeScript, React, Redis, MySQL, PostgreSQL, Elasticsearch, Kafka/RabbitMQ, monitoring and observability tools

Requirements

  • Strong hands-on commercial experience with Node.js and TypeScript
  • Experience with React and modern frontend engineering practices
  • Solid experience with databases, caching, and data management approaches
  • Experience investigating and resolving issues in distributed environments
  • A product ownership mindset, with the ability to take features from concept to production
  • English communication skills for daily collaboration and team meetings

Nice to Have

Experience with microservice architectures and API development

Experience with Docker and Kubernetes

Knowledge of application performance tuning and optimization

Basic understanding of Linux and networking

Familiarity with clean architecture principles and testing methodologies

What the Company Offers

  • Fully remote work environment with a flexible schedule
  • Paid vacation and days off
  • Salary reviews twice a year
  • B2B/contractor cooperation model with accounting support
  • An opportunity to work on a large-scale product and influence technical direction