Principal Software Architect — Quantum Platform

<p><strong>Location:</strong> Remote within Europe, with regular presence in Bremen</p> <p><strong>Direct Reports: </strong>None initially; technical leadership across the engineering group</p> <h2>Mission</h2> <p>Own the architecture of the software platform on which Constructor Labs' quantum group builds.

The platform drives physical quantum hardware end to end — calibration, orchestration, experiment execution and device state — and must work both in our own cloud and on customer premises, including restricted and air-gapped environments.

The Principal Architect sets the technical direction, makes the structural decisions, and is the senior engineering voice in a group where research and engineering sit closely together.

Responsabilidades

Pillar 1 Platform Architecture

• Own the end-to-end architecture across backend services, job orchestration, hardware abstraction and device state management.
• Define the interfaces between the scientific layer and the platform layer so physicists can work without engineering support.
• Make and carry the build-versus-buy and framework decisions; document them so they survive the people who made them.
• Lead the migration of the platform onto the Constructor technology stack.

Success Metrics and KPIs: architectural decisions documented and adopted, platform stability, migration delivered to plan.

Pillar 2 Hands-on Engineering

• Write production code in the core of the system, not only design documents.
• Own the hardest components personally — those where correctness and performance both matter.
• Set and enforce engineering standards: testing, review, structured logging, dependency governance.
• Remove single points of failure so no component has only one person who understands it.

Success Metrics and KPIs: test coverage, review discipline, bus factor above one on e...