Senior Python Engineer, Integration

About The Role
We're looking for a Senior Python Engineer to join our Integration team, which owns a broad set of critical integrations across the product. The team is responsible for integrations with KYC providers, geolocation services, payment methods, and other external systems that are essential to product operation and user experience.
What You'll Do
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 Django
Build and maintain integrations with external systems, including KYC, geolocation, and payment partners, and other third-party services
Work 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 participate in on-call rotations
What We're Looking For
At least 5+ years of development experience, with Python as the primary language and strong experience in API and system integrations
Proven experience integrating third-party APIs, with deep understanding of webhooks, callbacks, idempotency, and failure handling. Payments and KYC integrations are strong plus
Experience with observability tools to monitor and troubleshoot production integrations
Strong fundamentals in algorithms, data structures and concurrency
Experience in architecture design of highly loaded and scalable solutions
Strong understanding of the full software development lifecycle, from requirements analysis to deployment and production monitoring
Willingness to participate in on-call rotations
Nice To Have
Experience in early-stage startups and fast-paced engineering environments
Experience in writing automated tests, measuring test coverage, and defining test automation strategies
Experience with observability tools such as Datadog, CloudWatch, Grafana
Experience in sports/betting industries
Company Locations
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, we'll make Fliff better for employees and customers alike. Lively and Creative We 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 Rewarding We 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 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.
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