Senior Backend / Full Stack Engineer (Node.js)

Job Opportunity: Senior Backend / Full Stack Engineer (Node.js)

Location:

Cracow, hybrid model (6 office days per month)

Type of contract:

B2B

Role Overview

We’re looking for an experienced Backend / Full Stack Engineer to join a newly formed team building a product analytics and telemetry platform. The solution will collect and analyse behavioural and performance data from technology products and turn it into meaningful insights for internal users.

This is a new role giving engineers significant influence over the architecture, codebase and development practices from an early stage. The role is backend-oriented, with a primary focus on Node.js, REST APIs and databases, while frontend experience is an additional advantage.

Responsibilities

• Design and develop backend services and scalable REST APIs.
• Contribute to technical and architectural decisions for a newly built platform.
• Translate business and user requirements into practical technical solutions.
• Design and work with relational databases and data models.
• Build prototypes and proof-of-concepts to validate technical approaches.
• Maintain high standards of code quality, documentation and development practices.
• Participate across the software development lifecycle, from design and implementation through release and ongoing improvements.
• Cooperate directly with internal users and stakeholders to understand their needs and propose suitable solutions.

Requirements

• Strong commercial experience in backend software development.
• Hands-on experience with Node.js and Web APIs / REST APIs.
• Good knowledge of SQL and relational database design, preferably PostgreSQL.
• Experience working throughout the Software Development Life Cycle (SDLC).
• Practical experience with Git and modern software development practices.
• Strong analytical and problem-solving skills with attention to code quality.
• Good communication skills and confidence working directly with technical stakeholders and customers.

Nice to have

• Experience with Go.
• Frontend development experience with React or Angular.

What we offer:

• B2B contract.
• Private medical care, life insurance, and access to Multisport card.
• Stable, long-term projects with full-time employment.