Senior Fullstack Developer (React + Node)
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)