Senior React Web & Mobile Engineer – Remote Poland

Hard Rock Digital; United States; Remote; USD 46,000 - 66,000; Full time

Job summary

Hard Rock Digital, based in Poland, is seeking a Senior Web & Mobile Engineer for a fully remote B2B role to build customer-facing experiences across web and mobile, plus Back Office tools. This role requires strong React.js and React Native with TypeScript, and expertise in REST, GraphQL, and WebSocket integrations to deliver secure, performant apps.

You will collaborate with Product, Design, QA and backend teams in a regulated, high-traffic environment, delivering scalable, user-centric

Qualifications

• 5+ years of frontend and/or mobile development experience in production.
• Strong React.js expertise and 3+ years of production React Native with TypeScript.
• Proficient in TypeScript, JavaScript, HTML and CSS.
• Experience with MobX, Redux or similar state management.
• Experience integrating REST, GraphQL and WebSocket APIs.
• Experience building secure, performant, user-centric apps at scale.
• Knowledge of the client development lifecycle and deployment processes.
• Understanding of client-server architecture and system design.
• Excellent written and verbal communication skills.
• Bachelor's degree in CS or related field, or equivalent practical experience.

Responsibilities

• Work in an agile cross-functional team to deliver across web, iOS and Android.
• Develop high-performance web apps in React.js and mobile apps in React Native with TypeScript.
• Break down features, estimate work, write user stories, and define test coverage.
• Write frontend and mobile code to high standards and perform code reviews.
• Collaborate with Backend to design APIs and integrate REST/GraphQL/WebSocket.
• Support QA, Product and Release teams to push items to production.
• Build mobile capabilities like push notifications, offline storage.
• Participate in CI/CD for web and App Store / Play Store releases.
• Use analytics and performance tools to improve UX.
• Communicate effectively in English with managers and stakeholders.
• Work in a regulated, high-traffic environment.

Skills

Frontend & Mobile dev

React.js

React Native w/ TS

TypeScript/JavaScript

HTML/CSS

State management (MobX/Redux)

REST/GraphQL/WebSocket

Security & performance

Lifecycle & architecture

Communication skills

Education

Bachelor's degree in CS or related

Tools

Webpack

MobX

REST/GraphQL tooling

Job description

Hard Rock Digital, based in Poland, is seeking a Senior Web & Mobile Engineer for a fully remote B2B role to build customer-facing experiences across web and mobile, plus Back Office tools. This role requires strong React.js and React Native with TypeScript, and expertise in REST, GraphQL, and WebSocket integrations to deliver secure, performant apps.

You will collaborate with Product, Design, QA and backend teams in a regulated, high-traffic environment, delivering scalable, user-centric