Senior Frontend Developer

Quick Facts

• Role: Senior Frontend Developer (B2B)

• Main tech: Angular or React

• Work style: Hybrid (Warsaw) or remote

Description

You will develop clear, high-quality frontend code aligned with best practices, while maintaining technical documentation and ensuring app stability through unit testing. You will collaborate with Business Analysts, IT Architects, and business stakeholders, and you will mentor less experienced developers. The work emphasizes UX/UI, accessibility, responsive and mobile-first experiences, and integration with backend services via RESTful APIs.

Responsibilities

• Write readable, high-quality frontend code following good development practices

• Create and maintain technical documentation supporting the solutions

• Write and run unit tests to ensure application stability and quality

• Collaborate with Business Analysts, IT Architects, and business client stakeholders

• Provide technical support and mentoring for junior developers

Requirements

• Experience building frontend applications with Angular or React

• Strong JavaScript (ES6) skills and experience working with JSON

• Proficiency in HTML5 and CSS3 with LESS or SASS

• Apply Responsive Web Design (RWD) and Mobile First approaches

• Optimize web applications for mobile devices and multiple browsers (Chrome, Safari, Firefox, IE11+)

• Experience integrating with backend via RESTful API

• Focus on User Experience, usability (UX/UI), and Accessibility

• Knowledge of Rich Internet Applications (RIA)

• Follow Clean Code and solid programming practices

• Analytical thinking and creativity in problem-solving

• Ability to work independently, be engaged, and organize work well

• Good teamwork skills and preference for open, clear communication

• Experience using JIRA and Confluence

• Frontend technology knowledge enabling independent application development

• RxJS, Node.js, and TypeScript knowledge is a plus

Benefits

• B2B contract

• Access to GIGLIKE benefits platform

• Hybrid work (1–3 days per week in the Warsaw office) or remote

• Income loss insurance, hospital insurance, and private medical care

• Sports packages

• Accounting services