z.systems, a fast‑growing VC‑backed tech company, is transforming traditional retail across Africa through a full‑stack B2B2C digital ecosystem. Based in Casablanca, the company seeks a Senior Backend Engineering Lead to drive backend development, architect scalable transactional and gamification systems, and mentor a high‑performing engineering team. The role demands 6‑9 years of experience, strong leadership, and expertise in Node.js, Prisma, PostgreSQL, AWS, and system reliability. Candidates should be fluent in French and English, hold a BAC+5, and thrive in a dynamic, collaborative environment.