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Senior Fullstack Developer (React + Node)

Madfish

Madfish

Software Engineering
Ukraine · Europe · Europe · Europe · Ukraine
Posted on Oct 5, 2025

We are looking for a seasoned web developer with expertise in React and NodeJS, to lead the development of a new web application that is used for Marketing and A/B Testing.

Tech Stack

  • Frontend: React (NextJS), Typescript, MUI
  • Backend: Node (NestJS), PostgreSQL
  • Infrastructure: AWS, Cognito, ECS, S3, RDS, CloudFront
  • CI/CD: GitHub Actions, Terraform CDK
  • Others: GitHub, Jira, Confluence, Slack


Responsibilities

  • Develop AI-driven CMS web app for the marketing industry
  • Programming duties split approximately 60% React and 40% Node
  • Actively participate in the testing process including unit testing, integration testing as well as E2E and manual testing.
  • Ensure high speed and stability of the system

Requirements

  • Ability to build and deliver a product in early startup environment
    You can work independently to meet the business requirements and deadlines
  • At least 6 years of experience in software development
  • 3 years of experience in Node.js and Nest.js
    You have a good understanding of various aspects, including the multithreading, and other related details.
  • 3 years of experience in React JS
    You know React JS concepts, routing, tools, and best practices.
  • Code design proficiency
    You possess knowledge and experience in successfully implementing design patterns and developer principles such as SOLID, DRY, and KISS.
  • Intermediate level proficiency in spoken and written English is mandatory, as the interview will be conducted entirely in English

Nice to have

  • Experience with AWS
  • CI/CD with google actions
  • AI, Generative and ML


Key Benefits

  • Payments made once a month in USD (processed via Deel).
  • Local public holidays recognized.
  • Two weeks of paid annual vacation.

Working Conditions

  • Core working hours: 9 AM - 12 PM EST (New York)