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November 4, 2026

Senior Software Engineer (Node.js, React)

Senior • On-site

6,250 - 7,500 EUR/yr

Warsaw, Poland

Quick Facts

  • Role: Senior Software Engineer (Node.js/React)

  • Focus: Backend services (NestJS/TypeScript) and modern React applications; APIs; cloud-native deployments; AI-powered features

Description

Senior Software Engineer role developing backend services using NestJS (Node.js) and TypeScript, while building and enhancing modern React applications. You will develop and maintain REST and GraphQL APIs, design responsive UIs, manage Docker-based deployments in a cloud-native environment, and integrate AI-powered capabilities using modern AI services.

Responsibilities

  • Develop and maintain backend services using NestJS (Node.js) and TypeScript

  • Build and enhance modern React applications with scalability and performance in mind

  • Develop and maintain REST and GraphQL APIs

  • Integrate AI-powered capabilities into the product

  • Design responsive user interfaces using Tailwind CSS, Material UI (MUI), and modern frontend technologies

  • Manage deployments using Docker in a cloud-native environment

  • Design, optimize, and maintain MySQL databases and application data models

  • Collaborate with cross-functional teams to deliver features from concept through production

  • Participate in technical discussions, code reviews, and continuous improvement

  • Take ownership of features and contribute to product quality and engineering best practices

Requirements

  • 5+ years of professional software development experience

  • Strong proficiency in TypeScript, Node.js (NestJS), and React

  • Solid experience building modern React applications

  • Experience developing and maintaining REST and GraphQL APIs

  • Hands-on experience with MySQL or other relational databases

  • Experience working with Docker and containerized applications

  • Familiarity with Google Cloud Platform or other cloud platforms

  • Experience using Axios or similar libraries for API communication

  • Strong problem-solving skills with an ownership-driven mindset

  • Ability to work independently while collaborating effectively within a team

  • Excellent English communication skills

Benefits

  • Opportunity to work on cloud-native, AI-powered fintech software transforming receivables and debt collection workflows

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