Fliff - Senior Python Engineer, Integration
Requirements
• 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 • 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 • 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
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 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
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