Senior Frontend Developer (React & React Native)

NextChallenge; Lisboa; Presencial; EUR 65 000 - 90 000; Tempo integral

Resumo da oferta

NextChallenge is seeking a Senior Frontend Developer to join our remote-friendly team. You will build UI components, refactor code, and contribute to mobile app development, delivering high-quality interfaces with React and TypeScript.

You will work across SPAs and PWAs, collaborate with the team, optimize performance, and ensure robust testing with Jest/Cypress while maintaining strong ownership of code quality. English communication required.

Qualificações

• 7+ years of experience as a Front-End Engineer.
• Strong React 18+ expertise including hooks and context.
• Expert TypeScript with advanced types and strict configurations.
• Strong knowledge of state management tools (Redux, MobX, Zustand).
• Experience building SPAs and PWAs; RESTful and GraphQL APIs.
• Familiarity with front-end build tools (Webpack, Vite, Rollup) and CI/CD pipelines.
• RN: 1–2 years of professional React Native; RN SDK development.
• Upper-Intermediate English required.

Responsabilidades

• Performing a technical assessment of requirements to ensure feasibility within time.
• Fixing bugs in existing projects.
• Refactoring and optimising existing code.
• Optimising components for maximum performance across browsers.
• Creating new and modifying existing websites.
• Be proactive in communication with team members.

Conhecimentos

Front-end development

JavaScript

React 18+

TypeScript

State management

SPAs and PWAs

REST & GraphQL APIs

Build tools

Testing frameworks

React Native

RN SDK

Code quality

English level

Ferramentas

Webpack

Vite

Rollup

CI/CD pipelines

Jest

Cypress

Descrição da oferta de emprego

Senior Frontend Developer (React & React Native)

We are looking for an experienced JavaScript developer with a strong understanding of React.

Role Overview

We are looking for an experienced JavaScript developer with a deep understanding of React. The main responsibilities will include the development of user interface components, refactoring and optimisation of existing code, and participation in mobile application development. Companies' projects are stable and long-term, with an active backlog of new front-office features.

Key Responsibilities

• Performing a technical assessment of business requirements to ensure the possibility of their implementation within a reasonable time;
• Fixing bugs in existing projects;
• Refactoring and optimising existing code;
• Optimising components for maximum performance across browsers;
• Creating new and modifying existing websites;
• Be proactive in communication with team members.

Required Skills & Experience

• 7+ years of experience as a Front-End Engineer;
• Solid background in coding pure JavaScript;
• Strong proficiency in React 18+, including hooks, context, and modern patterns;
• Expert-level TypeScript experience with advanced types and strict configurations;
• Strong knowledge of state management tools (Redux, MobX, Zustand, etc.);
• Proven experience in building SPAs, PWAs, and working with RESTful and GraphQL APIs;
• Familiarity with front-end build tools (Webpack, Vite, Rollup) and CI/CD pipelines;
• Solid understanding of browser rendering behaviour and performance optimisation;
• Experience with automated testing frameworks (Jest, Cypress, etc.);
• At least 1-2 years of professional experience with React Native;
• Hands-on experience developing a React Native SDK for cross-platform projects;
• Strong ownership of code quality and hands-on experience with self-testing, as developers work in a self-test paradigm without dedicated Manual QA engineers;
• Level of English language - Upper-Intermediate or higher.

Will Be a Plus

• Experience with micro frontends, monorepos, or component libraries (Storybook, Bit);
• Knowledge of design systems (Material UI, Tailwind, or similar);
• Exposure to WebAssembly, WebSockets, or real-time applications;
• Experience integrating third-party tools and libraries (e.g. Trustly, Whizdom);
• Ability to understand business requirements and translate them into technical requirements.

The Company Guarantees You The Following Benefits

• Global Collaboration: Join an international team where everyone treats each other with respect and moves towards the same goal;
• Autonomy and Responsibility: Enjoy the freedom and responsibility to make decisions without the need for constant supervision.
• Competitive Compensation: Receive competitive salaries reflective of your expertise and knowledge as our partner seeks top performers.
• Flexible Work Schedule: Focus on performance, not hours, with a flexible work schedule that promotes a results-oriented approach;
• Unlimited Paid Time Off: Prioritise work-life balance with unlimited paid vacation and sick leave days to prevent burnout;
• Career Development: Access continuous learning and career development opportunities to enhance your professional growth;
• Corporate Culture: Experience a vibrant corporate atmosphere with exciting parties and team-building events throughout the year;
• Referral Bonuses: Refer talented friends and receive a bonus after they successfully complete their probation period;
• Medical Insurance Support: Choose the right private medical insurance and receive compensation (full or partial) based on the cost;
• Flexible Benefits: Customise your compensation by selecting activities or expenses you'd like the company to cover, such as a gym subscription, language courses, Netflix subscription, spa days, and more;
• Education Foundation: Participate in a biannual raffle for a chance to learn something new unrelated to your job as part of your commitment to ongoing education.

Interview Process

• HR Interview with the Recruiter;
• A 1-hour Tech Interview;
• A 1.5-hour Final interview with the team.

Job Specifications

• Role Occupation
• Remote
• Location: Remote Tbilisi Lisbon London Limassol Yerevan
• Role Direction: Software Engineering, IT
• Seniority Level: Senior