Senior PHP Backend Engineer - FinTech Payments & Crypto

A fast-growing FinTech company in Spain is seeking a Senior Backend Developer (PHP) to enhance core backend services where correctness, security, and performance are crucial. The ideal candidate will have over 5 years of PHP experience and strong PostgreSQL skills. Responsibilities include writing modern PHP, building APIs, and optimizing database queries. This role requires a security mindset and native-level English proficiency, with a preference for candidates located within CET ±2 hours.
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