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May 26, 2026

Senior Front-end Developer

Senior • Hybrid

Lodz, Poland

Industry: Banking
Work model: Hybrid in Warsaw, Łódź or Tricity - 3 days a week in the office
Rate: up to 150 PLN/h (B2B contract)

Introduction & Summary

We are seeking a highly skilled Senior Front-end Developer proficient in modern frontend technologies to design and implement complex user interfaces. The ideal candidate should possess extensive experience with HTML, CSS, JavaScript, and TypeScript, alongside capabilities in Web Components. Exceptional collaboration skills are essential as the role involves working closely with various teams to enhance product offerings.

Main Responsibilities

  • Architect and implement interactive user interfaces and single-page applications.

  • Establish best practices for application architecture and component reusability.

  • Audit and enhance frontend performance and load times.

  • Collaborate with backend engineers and product teams to integrate APIs.

  • Ensure optimal user experiences across multiple devices.

Key Requirements

  • Proficiency in HTML, CSS, JavaScript, TypeScript.

  • Experience with Web Components / Lit.

  • Strong background in Node.js / npm.

  • Familiarity with Vitest.

Nice to Have

  • Knowledge of CICD.

  • Experience with Kafka.

  • Familiarity with NinjaFork.

  • Understanding of MQ.