Python Engineer, Sr.
About The Company:
Fliff is the arena for high-upside play, dedicated to dismantling the paywalls of legacy sportsbooks and reimagining the economics of social games. We pioneer the next generation of rewards-driven entertainment that spans sports, casino, predictions, collectibles, and beyond. Powered by a frictionless freemium architecture, Fliff democratizes access and offers millions of players nationwide a real stake, real thrill, and real upside. By combining authentic competitive drive with instant rewards and interactive games, we transform passive sports fans and casual gamers into active, empowered participants—unlocking the player in everyone.
About The Role:
We are seeking a Senior Python Engineer to join our Integration team, which manages a broad set of critical integrations essential to product operation and user experience. This team is responsible for integrating with KYC providers, geolocation services, payment methods, and other external systems. The ideal candidate will take full ownership of backend features and improvements, collaborating closely with product and engineering teams to deliver scalable, high-performance backend services using Python and Django. This role involves designing, developing, and maintaining integrations, implementing observability, writing tests to ensure reliability, and supporting production systems including participation in on-call rotations.
Qualifications:
- Minimum of 5+ years of development experience with Python as the primary programming language
- Strong experience in API and system integrations
- Proven track record integrating third-party APIs with deep understanding of webhooks, callbacks, idempotency, and failure handling
- Experience with payments and KYC integrations is a strong plus
- Familiarity with observability tools for monitoring and troubleshooting production integrations
- Strong fundamentals in algorithms, data structures, and concurrency
- Experience designing architectures for highly loaded and scalable solutions
- Comprehensive understanding of the full software development lifecycle, from requirements analysis through deployment and production monitoring
- Willingness to participate in on-call rotations
Nice To Have:
- Experience working in early-stage startups or fast-paced engineering environments
- Proficiency in writing automated tests, measuring test coverage, and defining test automation strategies
- Experience with observability tools such as Datadog, CloudWatch, and Grafana
- Background in sports or betting industries
Responsibilities:
- Take full ownership of backend features and improvements from design through implementation, deployment, and production support
- Design, develop, and maintain scalable, high-performance backend services using Python and DjangoBuild and maintain integrations with external systems including KYC, geolocation, payment partners, and other third-party services
- Collaborate closely with product and engineering teams to scope and deliver new integrations
- Implement observability across integration flows, including monitoring, logging, and alerting
- Write unit and integration tests to ensure system reliability, prevent regressions, and improve overall test coverage and testing practices
- Support production issues and actively participate in on-call rotations to maintain system uptime and performance
Benefits:
- Opportunity to work with a cutting-edge, rapidly growing company in the sports and social gaming industry
- Collaborative, inclusive, and friendly work environment
- Engagement with challenging and rewarding projects aligned with career ambitions
- Remote work flexibility with multinational team presence in Philadelphia, New York, Austin, and Sofia
- Exposure to innovative technologies and scalable system architectures
Equal Opportunity
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.