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Senior/Lead Quantum Compiler & Instruction Set Architecture (ISA) Engineer

planqc • Germany
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Lead the design and optimization of quantum compilation infrastructure for neutral-atom quantum hardware, defining compiler architecture, intermediate representations, and ISA across abstraction levels. Collaborate with physicists, engineers, and algorithm teams to bridge hardware-software interfaces, ensuring efficient and reliable quantum program execution. Shape the future of quantum compilation with ownership over tooling, verification, and technical leadership in a cutting-edge research environment.

Key Highlights
Lead quantum compiler architecture and instruction set design for neutral-atom quantum hardware
Collaborate across interdisciplinary teams (physicists, software engineers, QEC teams)
Own interfaces between hardware, compilation, and algorithm teams with full technical ownership
Key Responsibilities
Design and optimize a multi-level quantum compiler architecture, including dialects from logical circuits to pulse-level instructions
Develop hardware cost models (fidelity, timing, atom-loss budgets) to drive compiler optimizations
Define and maintain instruction sets at all abstraction levels, from user-facing gates to hardware-specific pulse/movement instructions
Collaborate with physicists and control engineers to shape hardware-exposed operations and ISA evolution
Build tooling for compilation visibility (IR dumps, pass diffing, visualizations, and job replay)
Develop verifiers, property-based tests, and equivalence checks for compiler trustworthiness
Create tools for algorithm/QEC teams, including resource estimation for circuit-to-hardware mapping
Make and document architecture decisions, review designs, and represent compilation in hardware co-design discussions
Ensure interoperability with standards like OpenQASM 3 and QIR
Technical Skills Required
Compiler Design & Intermediate Representations (IR) Instruction Set Architecture (ISA) MLIR or xDSL (or comparable SSA-based infrastructures)
Benefits & Perks
Flexible working (hybrid)
Company pension with employer contribution
Health and fitness benefits (EGYM Wellpass)
Job bike lease
Learning and development (trainings, conference participation)
Relocation and visa support for international hires
Four locations (Garching, Munich, Ulm, Innsbruck)
Regular team and company events
Nice to Have
C++ or Rust
Quantum compilation tools (Qiskit, Qrisp, tket, Cirq, CUDA-Q, Catalyst, Kirin/Bloqade)
Quantum error correction or stabilizer simulation (e.g., Stim)
GPU optimization experience
Open-source contributions or private projects

Job Description

Your missionplanqc builds digital quantum computers from neutral atoms held in optical tweezers. We are a spin-off of the Max Planck Institute of Quantum Optics, based in Garching near Munich. Our software team owns the stack that turns a quantum program into the laser pulses and atom movements our machines execute.As a Senior / Lead Quantum Compiler & ISA Engineer, you will lead how programs reach our neutral-atom hardware: the compiler architecture, its intermediate representations, and the instruction set at every level from gates to pulses and atom movement. Depending on experience, the role can .
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