Senior ReactJS Engineer
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Job Location:
Monthly Salary:
Posted on:
30+ days ago
Vacancies:
1 Vacancy
Job Summary
Fliff unpacks sports gaming into social free-to-play games for all types of sports fans. Weve built a social sports gaming experience that allows users to compete for leaderboard positioning to achieve badges and build their status within the game.
We are pioneering play-for-fun sports gaming with our flagship social sportsbook experience that includes sweepstakes promotions and loyalty rewards. We provide sports fans with fun engaging and free-to-play alternatives to real money gaming.
Who We Are Looking For
If you are passionate about building scalable and engaging web applications we want you on our team! Fliff is seeking a talented Sr. ReactJS Engineer to join our growing Social Sportsbook team. Youll be part of a cross-functional group responsible for the full software development life cycle focusing on delivering top-tier web experiences for both mobile and desktop platforms. The Sportsbook Reliability is a dynamic team that brings together skilled engineers and product managers who collaborate closely to build release and support live apps that our users love. We operate in Eastern European Time (EET/EEST).
The Role:
- Develop and maintain responsive web applications using ReactJS ensuring a seamless experience across devices.
- Collaborate with backend DevOps and designers to implement new features and optimize the live product.
- Support the live platform by identifying and resolving real-time performance issues.
- Design scalable solutions with attention to responsive UIs using pure CSS/SCSS without relying on external frameworks.
- Mentor junior engineers and provide code reviews to maintain high standards.
- Leverage Redux React-Redux bindings and middleware (Thunk/Saga) for state management.
- Implement RESTful APIs using axios and fetch with optional GraphQL integration via Apollo client.
Experience Required:
- 5 years of experience building modern web applications with strong expertise in ReactJS and React Hooks (useState useEffect custom hooks).
- Advanced TypeScript skills including utility types (Partial Pick) generics and infer keyword usage.
- Solid understanding of Redux mechanics React-Redux bindings and internal hooks.
- Strong CSS/SCSS knowledge with the ability to build reusable responsive UIs without external libraries (e.g. Material UI Tailwind).
- Knowledge of WebSockets (native and ) to handle real-time data.
- Experience with RESTful APIs axios and fetch with optional GraphQL and Apollo Client experience.
- Familiarity with React Router for dynamic imports lazy loading and code splitting.
- Comfortable with UI tools like Figma along with React DevTools Chrome debugger and testing tools such as Jest and Cypress.
- Adaptability and problem-solving skills to handle real-time challenges and evolving project requirements.
- Strong communication skills and a collaborative mindset to work effectively with cross-functional teams.
Benefits
- Competitive compensation package.
- Opportunity for professional development in a dynamic fast-growing company.
- Supportive collaborative and knowledge-driven work environment.
- Engaging and challenging role with the freedom to innovate and build exciting solutions in the sports gaming industry.
Why Join Us
At Fliff youll have the opportunity to shape the future of social sports betting by working on exciting fast-paced projects and supporting a live app. We value creativity collaboration and problem-solving and were looking for someone ready to take ownership and make an impact.
We are a multinational company with our headquarters based in Philadelphia and offices in New York Austin and Sofia Bulgaria. Wherever we are in the world we pride ourselves on being a close-knit focused team that is welcoming and friendly and the work that we do is always interesting and rewarding. Wherever we are in the world we pride ourselves on being a close-knit focused team that is:
Welcoming and Friendly
We want to reflect the diversity of the cities we serve. By creating an inclusive culture where everyone can thrive well make Fliff better for employees and customers alike.
Lively and Creative
We respect and value each others ideas experience and expertise. There is no such thing as a bad idea; only ideas that are executed and ideas that are discarded after consideration.
Stimulating and Rewarding
We know bright minds love a challenge and we understand your desire to see your hard work pay off. Well make sure your daily tasks align with your career ambitions as we grow together.
Equal Employment Opportunity Statement
Fliff is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race color religion gender gender identity or expression sexual orientation national origin genetics disability age or veteran status.
Join Our Team!
If youre ready to be part of an exciting innovative and dynamic team apply now to help shape the future of sports gaming with Fliff.
IMPORTANT NOTICE: The privacy and security of applicant information is paramount and we take fraud attempts very seriously. Please note that Fliff will never ask for payment or personal financial information during the application of our legitimate job opportunities can be found on our official career site ( Please be cautious of communications and links that come from non-company email addresses (@) social media messaging platforms or unsolicited phone calls.
Required Experience:
Senior IC
Key Skills
- APIs
- C/C++
- Computer Graphics
- Go
- React
- Redux
- Node.js
- AWS
- Library Services
- Assembly
- GraphQL
- High Voltage
About Company
Fliff is a new sports prediction experience that is social and rewarding. Play for free and earn rewards to experience the sweat without the financial risk!
