Senior Front-End Web Developer - Warsaw, Poland

It's Time to Love Your Job Again!

We’re seeking an experienced Senior Frontend Developer with at least 8 years of professional experience building modern, responsive, and high-performing web applications. The ideal candidate will have strong expertise in React and JavaScript, alongside solid experience working within a Microsoft .NET environment.


This role involves building user-friendly interfaces, translating business requirements into technical solutions, and collaborating with product managers, designers, and backend developers to deliver high-quality applications. The ideal candidate will take ownership of frontend development, contribute to technical decisions, mentor other developers, and help improve code quality and application performance.

Key Responsibilitie
• Design, develop, test, and maintain responsive web applications using React and JavaScript.

• Build reusable UI components and maintain high standards of code quality, performance, and accessibility.

• Collaborate with backend developers to integrate APIs and .NET-based services.

• Translate business requirements and designs into scalable, maintainable frontend solutions.

• Participate in code reviews, technical discussions, and architectural decisions.

• Identify and resolve technical issues, optimise application performance, and follow development best practices.

• Support and mentor other developers while researching new tools and technologies.


Requirements
• Minimum 8 years of professional frontend development experience.

• Strong commercial experience with React, JavaScript, HTML5, and CSS3.

• Experience working with Microsoft .NET environments and integrating REST APIs.

• Strong understanding of frontend architecture, reusable components, design patterns, and responsive design.

• Experience with Git, testing, debugging, and performance optimisation.

• Ability to take ownership of projects, collaborate across teams, and guide other developers.

Required Skills: React, JavaScript, HTML5, CSS3, Microsoft .NET, REST APIs, Git.
Desirable Skills: C#, MVC, .NET Core, TypeScript, Tailwind CSS, Syncfusion, Node.js, SQL Server, 
PostgreSQL, and cloud platforms.