Location: Zurich, Switzerland. Employment Type: Full-Time. Department: Quantum Architecture. Position Overview: We are seeking a mid-level Compiler Engineer to design and build the compilation stack for ZuriQ's 2D Penning trap quantum computing architecture. You will work on the full pipeline from high-level quantum circuits down to hardware-native pulse sequences, with particular emphasis on 2D ion transport compilation. You will work at the intersection of classical compiler engineering and quantum hardware constraints to build a modular, extensible compiler. Key Responsibilities: Design and implement MLIR-based compilation passes for quantum circuits targeting our 2D Penning trap architecture; Develop and optimize the 2D ion transport compilation layer: routing, sequencing, and scheduling ion shuttling operations under hardware timing and connectivity constraints; Build quantum circuit optimization passes (gate synthesis, peephole rewriting, commutation-aware reordering) as MLIR dialects and transformations; Define and maintain intermediate representations (IRs) that bridge abstract quantum algorithms and hardware instructions set; Collaborate with control software engineers to ensure compiled output is directly consumable by the hardware backend; Profile compilation pipeline performance and optimize for both compilation speed and output quality (gate count, depth, transport overhead); Contribute to internal tooling, testing infrastructure, and documentation for the compiler stack; Stay current with the research landscape in quantum compilation, transport-aware scheduling, and trapped-ion architectures. Required Qualifications: Master's or PhD in Computer Science, Physics, Electrical Engineering, or a related field; +2 years of professional experience in compiler engineering; Strong proficiency in C++ (modern C++17/20) for systems-level compiler development; Solid Python skills for tooling, testing, and integration with quantum software ecosystems (Qiskit, PennyLane, or similar); Solid understanding of compiler fundamentals: IR design, pass management, dataflow analysis, and code generation; Ability to reason about hardware constraints and translate them into compiler policies. Preferred Qualifications: Experience writing custom MLIR dialects and transformation; Demonstrated experience in quantum circuit compilation or optimization; Familiarity with trapped-ion, Penning trap, or other atomic quantum hardware; Experience with ion transport or qubit routing problems graph-structured architectures; Contributions to open-source quantum software or compiler projects. What We Offer: Play a key role in building and shaping a new compiler stack; Direct access to cutting-edge 2D Penning trap hardware; Competitive compensation and equity. Stock option plan that allows you to become a true shareholder in the company; Flexible work environment (home office); Be part of a dynamic team that operates on four core principles: Excellence, Reliability, Trust & Open Feedback; Zurich constantly ranks at or near the top of most liveable cities in the world; 30 days of holiday. Impact: The 2D Penning trap architecture presents a fundamentally different set of constraints from mainstream ion trap or superconducting platforms. Ion transport in two dimensions introduces a rich, largely unsolved compilation challenge, and your work will define how ZuriQ's hardware is programmed at scale. You'll have real opportunities to publish and patent your work. To Apply: Please submit your CV and a cover letter. We are an equal opportunity employer committed to building a diverse and inclusive team.