Principal Quantum Platform Architect — Remote Europe

constructorknowledgelabs; United States; Hybrid; USD 161,000 - 242,000; Full time

Benefits offered by this job

Remote-first Europe

On-site Bremen presence

Engineering leadership

Job summary

constructorknowledgelabs seeks a principal software architect to lead the end-to-end architecture for a quantum computing platform. You will bridge research and production engineering, owning backend and hardware integration while coding in critical components.

You will shape interfaces for researchers, document build-versus-buy decisions, and drive platform migration to the chosen stack. English fluency and on-premise experience are required.

Qualifications

• Ten or more years building production software systems with strong depth in Python, C#/.NET, or C++.
• Practical experience with distributed systems, job scheduling, and instrument or physical hardware integration.
• Proven track record as the senior technical voice in a small team.
• History of shipping software into on-premise or restricted environments, not only cloud.
• Ability to reason about complex architectures and explain them clearly to non-engineers.
• Degree in computer science, physics, engineering, or equivalent practical experience; fluent English

Responsibilities

• Own end-to-end architecture across backend services, job orchestration, hardware abstraction, and device state management.
• Shape the interface between scientific workflows and platform layers so researchers can work without engineering support.
• Make and document build-versus-buy and framework decisions, and lead the migration of the platform onto the chosen stack.
• Write production code in the system's hardest components, where both correctness and performance are non-negotiable.
• Define and uphold engineering standards for testing, review, structured logging, and dependency governance, while reducing single points of failure.
• Work daily with research physicists to translate experiments into software, and support product planning with realistic technical input.

Skills

Software architecture

Distributed systems

Python

C#/.NET

C++

On-premises deployment

Leadership

English fluency

Education

BS/MS in CS or related field

Physics/Engineering degree

Equivalent practical experience

Job description

constructorknowledgelabs seeks a principal software architect to lead the end-to-end architecture for a quantum computing platform. You will bridge research and production engineering, owning backend and hardware integration while coding in critical components.

You will shape interfaces for researchers, document build-versus-buy decisions, and drive platform migration to the chosen stack. English fluency and on-premise experience are required.