Principal Software Engineer - AI-Driven Release Platform

HubSpot

Ireland

Hybrid

EUR 150,000 - 210,000

Full time

2 days ago

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Job summary

HubSpot's Developer Acceleration group is seeking a Principal Software Engineer to shape the future of release engineering at scale. You will stay close to the code, lead high-impact initiatives end-to-end, and influence architectural choices across build, test, and deployment pipelines.

You'll design AI-powered QA, rethink testing and delivery infrastructure, and partner with engineering leaders to raise the platform's capabilities.

Qualifications

Deep experience building and evolving large-scale distributed systems, particularly in CI/CD, build infrastructure, release engineering, or foundational backend platforms.
Strong architectural instincts with a bias toward simplicity, clarity, and long-term platform leverage.
Experience operating at hyperscaler or platform-provider scale.
Track record of owning and delivering complex, cross-team technical initiatives with org-wide impact.
Hands-on mindset; you lead by building, debugging, reviewing, and shipping.
Ability to move into unfamiliar technical territory quickly and form opinions from first principles.

Responsibilities

Own the future of HubSpot's release engineering platform and shape its technical direction.
Write production code regularly and lead complex initiatives from idea to rollout.
Design and implement AI-powered QA agents that run on every deploy to reduce risk.
Rethink testing and delivery infrastructure for a new era and scale to 500+ deploys per minute.
Influence across the broader engineering org with design reviews and mentoring.