Senior .NET Full-Stack Engineer — Lead AI‑Driven Research Platform

Frontiers seeks a Senior Full-Stack Engineer with a strong backend focus to build and evolve the RTM application. You will own complex backend systems and full‑stack features end‑to‑end, from specification refinement to production monitoring, in a distributed .NET/Vue environment.

You’ll modernise legacy Angular apps, collaborate with cross‑functional teams, and apply AI tooling to improve design, testing, and deployment. This role blends autonomy with teamwork in a hybrid Madrid setting.