efbet
Frontend Developer
Skills
16 days ago
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Important information
Contract type:
Permanent
Location:
Sofia City Province, Bulgaria
Work mode:
Onsite
Published on:
5 October 2026
What they need
WHO WE ARE AND WHAT WE DO
We are a product company specializing in both online and land-based gaming. We provide our customers with fast and secure payment methods, along with unparalleled customer service. Our goal is to always deliver the best possible gaming experience to our valued customers. We are currently seeking highly motivated candidates for the position of Mid/Senior JavaScript Developer .
Key Responsibilities:
- Develop and maintain scalable web and mobile applications using React and React Native .
- Implement state management solutions with Redux (preferably Redux Toolkit).
- Write clean and efficient code using JavaScript (ES6+) and TypeScript (4.5+) .
- Optimize UI rendering, minimize bundle sizes, and ensure smooth handling of heavy data flows.
- Utilize Webpack , Babel , and other tools for efficient development and build processes.
- Implement unit and integration tests using Jest to ensure code quality.
- Work with Websockets and ensure real-time data synchronization across multiple screens.
- Implement authentication and security measures using the Web Authorization Protocol .
- Collaborate with cross-functional teams using Git , Jira , and Confluence for version control and project management.
Required Skills and Experience:
- Professional experience with React or React Native .
- Solid understanding of Redux (preferably Redux Toolkit).
- Strong command of HTML , CSS , SCSS (with modules).
- Excellent knowledge of JavaScript (ES6+) and TypeScript (4.5+) .
- Strong understanding of programming principles like data types, algorithms, and design patterns.
- Familiarity with Git for version control.
Nice to Have:
- Experience with Websockets and real-time data synchronization.
- Experience with Web Authorization Protocol for secure applications.
- Experience using Webpack , Babel , and NPM for build and deployment.
- Experience using Xcode and Android Studio for mobile development.
- Experience deploying React Native apps on iOS and Android .
What We Offer:
- Competitive salary
- Food vouchers Multisport card
- Internal & external training programs
- Team buildings & local company events
- Employee referral bonuses
- Parking
- Bike-friendly office
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