Senior Frontend Software Engineer

Luxoft; Kraków; Hybrid; PLN 180,000 - 320,000; Full time

Job summary

Luxoft in Kraków seeks a senior front-end developer to join a client team in the investment banking domain. You will build modern, scalable web apps using React 17+ and TypeScript, with a focus on clean code, performance, and accessibility.

Collaborate with backend engineers to consume RESTful APIs, write robust UI tests (RTL, Cypress, Playwright), and participate in Scrum/Kanban ceremonies. If you enjoy fast-paced finance-grade projects across frameworks, apply now.

Qualifications

• Expertise in HTML5 and JavaScript (ES).
• Proven experience with React 17+, TypeScript, Redux is a plus
• Minimum 10 years of experience in React with TypeScript proven track of engagement in long-term projects in React
• Experience in testing UI applications (RTL, Cypress, Playwright)
• Proficiency in CSS3/Less/CSS Modules (not being afraid to style applications).
• Clean coding skills.
• Excellent problem-solving abilities.
• Experience in RESTful API design.
• Familiarity with agile development practices (Scrum, Kanban, etc.).
• Good communication skills and the ability to clearly state requirements for the backend team.

Responsibilities

• Design, develop, and maintain modern, scalable web applications using React (17+) and TypeScript, with exposure to Angular where required
• Build high-quality, reusable UI components with a strong focus on performance, accessibility, and maintainability
• Collaborate closely with backend engineers to define and consume RESTful APIs, clearly communicating requirements and constraints
• Translate business and product requirements into clean, intuitive user interfaces
• Apply clean code principles and front-end best practices across the codebase
• Write and maintain automated UI tests using React Testing Library, Cypress, and/or Playwright
• Implement and maintain application styling using CSS3, Less, and CSS Modules, taking ownership of UI look and feel
• Participate actively in agile ceremonies (Scrum/Kanban), including refinement, planning, reviews, and retrospectives
• Perform code reviews and contribute to continuous improvement of front-end standards and tooling
• Work closely with QA, product managers, and designers to ensure high-quality, business-aligned deliveries
• Support and improve existing applications in a fast-paced, enterprise investment-banking environment

Skills

HTML5

JavaScript

React.js

TypeScript

Redux

UI Testing

CSS Modules

RESTful API design

Agile methodologies

Problem solving

Communication

Tools

React Testing Library

Cypress

Playwright

Job description

Project description

We are looking for a skilled front-end developer to join our client's team and contribute to the development of modern, scalable web applications. You'll be part of a collaborative client's team focused on clean code, agile methodologies, and delivering high-quality user interfaces. This position is ideal for someone who enjoys working across multiple frameworks and thrives in a fast-paced, agile environment. The client is from investment banking industry.

Responsibilities

• Design, develop, and maintain modern, scalable web applications using React (17+) and TypeScript, with exposure to Angular where required
• Build high-quality, reusable UI components with a strong focus on performance, accessibility, and maintainability
• Collaborate closely with backend engineers to define and consume RESTful APIs, clearly communicating requirements and constraints
• Translate business and product requirements into clean, intuitive user interfaces
• Apply clean code principles and front-end best practices across the codebase
• Write and maintain automated UI tests using React Testing Library, Cypress, and/or Playwright
• Implement and maintain application styling using CSS3, Less, and CSS Modules, taking ownership of UI look and feel
• Participate actively in agile ceremonies (Scrum/Kanban), including refinement, planning, reviews, and retrospectives
• Perform code reviews and contribute to continuous improvement of front-end standards and tooling
• Work closely with QA, product managers, and designers to ensure high-quality, business-aligned deliveries
• Support and improve existing applications in a fast-paced, enterprise investment-banking environment

SKILLS

Must have

• Expertise in HTML5 and JavaScript (ES).
• Proven experience with React 17+, Typescript, Redux is a plus
• Minimum 10 years of experience in React with Typescript proven track of engagement in long-term projects in React
• Experience in testing UI applications (RTL, Cypress, Playwright)
• Proficiency in CSS3/Less/CSS Modules (not being afraid to style applications).
• Clean coding skills.
• Excellent problem-solving abilities.
• Experience in RESTful API design.
• Familiarity with agile development practices (Scrum, Kanban, etc.).
• Good communication skills and the ability to clearly state requirements for the backend team.

Nice to have

.