Platform Engineering Lead for Scalable AI SaaS

Pillar; Barcelona; On-site; EUR 100,000 - 120,000; Full time

Benefits offered by this job

Barcelona product hub

AI-native team

Job summary

Pillar in Barcelona is seeking a Head of Engineering to lead and grow our engineering team as the platform scales. You will own the health, scalability, and daily operations of Pillar's platform, driving architecture decisions and cost-aware infrastructure choices in collaboration with the CPO.

You will guide a multi-tenant B2B SaaS system, write and review code, mentor engineers, and ensure rapid delivery without compromising long-term health.

Qualifications

• Built and shipped production systems yourself.
• Experience in B2B SaaS, multi-tenant platforms with data-heavy workflows.
• Managed engineers directly: hiring, goals, feedback.

Responsibilities

• Lead and grow our engineers who report directly to you.
• Ensure the system scales as customers, users, and data grow.
• Make infrastructure calls balancing DevOps and running costs.
• Set standards for architecture, code quality, testing and reviews across the monorepo.
• Map technical debt, prioritize and pay it down with a visible plan.
• Balance short-term delivery with long-term platform health.
• Oversee engineering operations: reliability, incidents, releases, on-call and rituals.

Skills

Leadership

AI-native mindset

Fluent English

Tools

PostgreSQL

Supabase

Vercel

Job description

Pillar in Barcelona is seeking a Head of Engineering to lead and grow our engineering team as the platform scales. You will own the health, scalability, and daily operations of Pillar's platform, driving architecture decisions and cost-aware infrastructure choices in collaboration with the CPO.

You will guide a multi-tenant B2B SaaS system, write and review code, mentor engineers, and ensure rapid delivery without compromising long-term health.