Senior Web & Mobile Engineer — React.js/React Native Remote

hardrockdigital; Województwo pomorskie; Remote; PLN 180,000 - 240,000; Full time

Job summary

Hard Rock Digital is seeking an experienced Senior Web & Mobile Engineer for a Poland-based, fully remote B2B full-time role. You will own frontend and mobile development across web and native platforms, collaborating with cross-functional teams to deliver secure, performant experiences.

You will apply strong React.js expertise and React Native with TypeScript to build customer-facing and internal tooling, ensuring quality through code reviews and robust test coverage.

Qualifications

• 5+ years of frontend and/or mobile development experience across web and mobile.
• Strong React.js expertise with 3+ years of production React Native with TypeScript.
• Strong TypeScript/JavaScript knowledge plus HTML and CSS experience.
• Extensive experience with state management in large applications (MobX/Redux).
• Experience integrating REST, GraphQL and WebSocket APIs.
• Experience building secure, performant, user-centric applications at scale.
• Understanding of client development lifecycle, debugging, performance, security, testing and deployment.
• Strong communication skills, written and verbal.
• Bachelor's degree in Computer Science or related field or equivalent experience.

Responsibilities

• Work in an agile, cross-functional team to deliver web and mobile platform experiences across web, iOS and Android.
• Develop and maintain high-performance web apps in React.js and mobile apps in React Native using TypeScript.
• Break down features, contribute to estimation, refine user stories, and help define test coverage.
• Develop frontend and mobile code to a high standard and perform code reviews.
• Collaborate with Backend to design APIs and integrate REST/GraphQL/WebSocket.
• Support QA, Product and Release Management in moving items to production.
• Build and maintain mobile capabilities like push notifications and offline content.
• Participate in CI/CD for web and app store releases.
• Use analytics and performance tooling to improve user experience.
• Communicate effectively in English with managers, product owners, and stakeholders.
• Work in a regulated, high-traffic environment.

Skills

React.js

React Native

TypeScript

JavaScript

HTML/CSS

State management (MobX/Redux)

REST APIs / GraphQL / WebSocket

Client development lifecycle

Communication skills

Education

Bachelor's degree in Computer Science or related field

Tools

MobX

Redux

WebSocket

REST APIs

GraphQL

Job description

Hard Rock Digital is seeking an experienced Senior Web & Mobile Engineer for a Poland-based, fully remote B2B full-time role. You will own frontend and mobile development across web and native platforms, collaborating with cross-functional teams to deliver secure, performant experiences.

You will apply strong React.js expertise and React Native with TypeScript to build customer-facing and internal tooling, ensuring quality through code reviews and robust test coverage.