Fliff - Senior Python Engineer, Wallet

Europe (European Time Zone Based Candidate)1w ago

In Office Senior EMEA Software Architecture Senior Software Engineer Blockchain Security Engineer Python Django Java PostgreSQL SQL Redis Kafka Close

Requirements

• At least 5+ years of development experience, with Python as the primary language • Strong experience building production backend systems with Django and asynchronous python (asyncio) • Strong fundamentals in algorithms, data structures and concurrency • Experience in architecture design of highly loaded and scalable solutions • Hands-on experience with relational databases (PostgreSQL), including writing complex SQL queries, schema design, migrations, performance tuning • Experience with Redis for caching and state management in distributed systems • Strong understanding of the development cycle from requirements analysis and deployment to application monitoring • Willingness to participate in on-call rotations • Production experience with Apache Kafka • Prior experience working with systems supporting 1M+ users • Experience in writing automated tests, measuring test coverage, and defining test automation strategies • Experience in sports/betting industries • 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, including asynchronous components where applicable • Write unit and integration tests to ensure system reliability, prevent regressions, and improve overall test coverage and testing practices • Estimate software development effort for features and long-term technical initiatives • Collaborate with product, QA, and engineering teams to turn requirements into well-defined technical solutions • Participate in code reviews, help raise engineering quality, and contribute to technical decisions