Frontend Engineer

JavaScript

Rondo ONZ, Warszawa

Harvey Nash Technology

30 000 - 36 000PLN

Gross per month - Permanent

Full-time

Permanent

Senior

Hybrid

Tech stack

English

C1

TypeScript

advanced

JavaScript

advanced

CI/CD

regular

Angular

regular

React

regular

CSS

regular

Webpack

regular

Figma

junior

Node.js

nice to have

Job description

This is a hybrid model of work (2/3 days per week from the office in Warsaw)

What You’ll Do

• Design and build reusable, scalable UI components that power critical business platforms.

• Drive continuous improvement in front-end architecture, focusing on performance, maintainability, and long-term scalability.

• Collaborate with designers, product managers, and backend engineers to create cohesive, intuitive interfaces aligned with business goals.

• Own testing strategy across the stack—unit, integration, and end-to-end—ensuring reliability and robustness in production.

• Conduct thoughtful code reviews, promote clean code principles, and mentor junior developers in front-end craftsmanship.

Key requirements:

• 5+ years of experience building front-end applications, with deep expertise in JavaScript and TypeScript.

• Expert-level proficiency with React and/or Angular, and strong understanding of component lifecycle, state management, and performance tuning.

• Solid experience integrating with RESTful APIs, along with proficiency in Git-based workflows and version control (GitHub).

• Hands-on experience with test-driven development (TDD), and familiarity with tools like Protractor, Cypress, Jest, or similar frameworks.

• Deep knowledge of asynchronous programming paradigms, including Promises, Observables, and event-driven design.

• Strong command of UI performance optimization, responsive layouts, and interactive feedback for complex interfaces.

• Understanding of full front-end delivery pipelines, including caching, proxying, and integration with backend systems and databases.

Published: 15.08.2025

Meet the company

Harvey Nash Technology

Harvey Nash Technology to firma działająca w branży rekrutacyjnej i doradztwie personalnym, oferująca usługi takie jak rekrutacje stałe, contracting, executive search oraz contract management. Firma jest częścią grupy Nash Squared i specjalizuje się w innowacyjnych rozwiązaniach HR, pomagając klientom znaleźć idealnych pracowników oraz zarządzać procesami zatrudniania.

Company profile

Office location