We’re looking for a Senior Python Engineer to join our Wallet team, which owns critical services in our product. The team is responsible for players’ wallets, bet placement, settlements, deposits and withdrawals, and other critical backend services. We’re looking for engineers with strong backend fundamentals and experience building reliable, high-load systems with complex business logic. What You’ll DoTake full ownership of backend features and improvements, from design through implementation, deployment, and production supportDesign, develop, and maintain scalable, high-performance backend services using Python and Django, including asynchronous components where applicableWrite unit and integration tests to ensure system reliability, prevent regressions, and improve overall test coverage and testing practicesEstimate software development effort for features and long-term technical initiativesCollaborate with product, QA, and engineering teams to turn requirements into well-defined technical solutionsParticipate in code reviews, help raise engineering quality, and contribute to technical decisionsWhat We're Looking ForAt least 5+ years of development experience, with Python as the primary languageStrong experience building production backend systems with Django and asynchronous python (asyncio)Strong fundamentals in algorithms, data structures and concurrencyExperience in architecture design of highly loaded and scalable solutionsHands-on experience with relational databases (PostgreSQL), including writing complex SQL queries, schema design, migrations, performance tuningExperience with Redis for caching and state management in distributed systemsStrong understanding of the development cycle from requirements analysis and deployment to application monitoringWillingness to participate in on-call rotationsNice To HaveExperience with GoProduction experience with Apache KafkaPrior experience working with systems supporting 1M+ usersExperience in writing automated tests, measuring test coverage, and defining test automation strategiesExperience in sports/betting industriesWe 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.Welcoming and FriendlyWe want to reflect the diversity of the cities we serve. By creating an inclusive culture where everyone can thrive, we’ll make Fliff better for employees and customers alike.Lively and CreativeWe respect and value each other’s 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 RewardingWe know bright minds love a challenge, and we understand your desire to see your hard work pay off. We’ll make sure your daily tasks align with your career ambitions as we grow together.Equal Employment Opportunity StatementFliff 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