Senior Backend Engineer - AI‑Driven with Java & Python

Epsilon, a subsidiary of Publicis Groupe, seeks a Senior Software Engineer (7–10 years) to design, build, and scale backend services in Java and Python. This role emphasizes spec‑driven AI‑assisted development, using Cursor, Claude Code, and Kiro to accelerate delivery with rigorous production quality.

You will lead system design, own complex production issues, and collaborate with product, data, platform, and cross‑functional teams to deliver reliable, scalable solutions including RAG‑based and