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Frontend Developer - Freelancer

Lingaro
Remote (Poland)
Freelance
AI tools:
Claude
GitHub Copilot
You apply on Lingaro's own careers site

You’ll build and maintain React and Next.js applications as a freelancer, with responsibility for performance, responsiveness, and code quality. The role explicitly expects use of AI-assisted coding tools for development tasks while maintaining security and engineering standards.

Freelance
Fully Remote
5+ years

Skills & Expertise

JavaScript
TypeScript
React
Next.js
Claude
GitHub Copilot
Redux
CSS

Key Responsibilities

Build and maintain reliable React and Next.js applications for web and mobile experiences.

Use AI-assisted tools for coding, debugging, testing, refactoring, and documentation.

Improve application performance and code quality while collaborating with cross-functional teams.

Full Description

Growth through diversity, equity, and inclusion. As an ethical business, we do what is right — including ensuring equal opportunities and fostering a safe, respectful workplace for each of us. We believe diversity fuels both personal and business growth. We're committed to building an inclusive community where all our people thrive regardless of their backgrounds, identities, or other personal characteristics.

Tasks

• Design, build and maintain efficient, reusable and reliable code.

• Build React/Next.js based applications.

• Ensure the best possible performance, quality, and responsiveness of applications.

• Identify bottlenecks and bugs, and devise solutions to mitigate and address these issues.

• Help maintain code quality.

• Participate in the agile team scrums and effectively communicate to the team the status, roadblocks, and timelines for the task at hand.

• Must be able to collaborate with BA, QA, developers and offshore developers to plan, design, develop, test, and maintain mobile web and desktop-based applications requested by the stakeholders.

• Share knowledge with the team during workshops.

Requirements

What We're Looking For:

• 5+ years of professional experience.

• Excellent communication skills.

• Great ownership of assigned tasks. Self-driven and proactive approach.

• Strong experience in JavaScript and TypeScript.

• Thorough understanding of React/Next.js core principles along with React router, hooks, Redux (or the like) workflows, Web performance and security.

• Developing and maintaining modern distributed micro services.

• Development in Cloud environments (Google Cloud Platform preferred).

• Building, testing, and troubleshooting high volume web services using API Protocols and Data Formats (REST & JSON).

• Solid foundation in data structures, algorithms and its implementation in JS.

• Expertise with semantic HTML.

• Proficiency in CSS, including Tailwind, Styled Components, CSS Modules, and SASS.

• Expertise browser-based debugging tools.

• Experience with responsive and adaptive design.

• experience with Testing (Unit Testing, react-testing-library, E2E).

• Keen understanding of web application development process and standard methodologies.

• Experience using AI-assisted development tools to improve productivity and code quality, such as Claude, GitHub Copilot, and similar tools.

• Ability to apply AI tools effectively for coding, debugging, testing, refactoring, and documentation while maintaining high standards of code quality, security, and best practices.

• English (B2+).

What Will Set You Apart:

• Previous experience in Front-end development with Docker.

• Experience with Headless CMS (preferably Contentful).

• Experience with NodeJS.

• Knowledge of GraphQL.

Missing one or two of these qualifications? We still want to hear from you! If you bring a positive mindset, we'll provide an environment where you feel valued and empowered to learn and grow.

Applications are handled on Lingaro's site