We’re hiring Node.js Developers to join the backend team of a growing tech company delivering scalable, high-performance solutions across multiple industries.
Up $6.000 Net on Invoice, or $5.500 Gross on Contract of Employment
Hybrid from Warsaw (3 days/week at office)
Full-time, long-term
Contract of Employment or B2B
Our client builds modern, cloud-based platforms that power real-time applications through robust APIs and efficient server-side logic. As part of the team, you’ll contribute to the development of backend services that support complex workflows, data processing, and seamless integration — all built with Node.js, modern JavaScript, and cloud infrastructure.
responsibilities :
Develop and maintain server-side applications using Node.js
Design and implement RESTful and GraphQL APIs
Optimize applications for speed, scalability, and security
Integrate with front-end components and third-party services
Collaborate with product managers, designers, and other developers
Write clean, maintainable, and well-documented code
Participate in code reviews and team meetings
Troubleshoot and debug production issues
Stay current with emerging technologies and best practices
requirements-expected :
Proficiency in Node.js and JavaScript (ES6+)
Experience with Express.js or similar Node.js frameworks
Solid understanding of asynchronous programming and event-driven architecture
Familiarity with REST APIs, WebSockets, and GraphQL
Knowledge of database systems (e.g., MongoDB, PostgreSQL, MySQL)
Experience with version control systems (e.g., Git)
Strong problem-solving skills and attention to detail
Experience writing unit tests with tools such as Mocha and Chai
Experience with authentication middleware, especially federated patterns such as Oauth and OpenID
Solid foundation in data structures, algorithms, and software design with strong analytical and debugging skills
