# LLVM / MLIR Compiler Architect - Photonic Computing (f/m/d) at Q Ant Gmbh

- Company: Q Ant Gmbh (qant.com)
- Location: Stuttgart, Munich, Austin
- Places: Stuttgart, United States
- Posted: 2026-02-18
- Apply: https://q-ant-gmbh.jobs.personio.de/job/2535601
- Page: https://ye.saranatour.dev/jobs/llvm-mlir-compiler-architect-photonic-computing-f-m-d-q-ant-gmbh-kn74bb1fv39shtfamjsa9qhmas8hftwx

## The posting

LLVM / MLIR Compiler Architect - Photonic Computing (f/m/d)
Q Ant Gmbh · Stuttgart, Munich, Austin

The future of AI computing builds upon light. Q.ANT is building photonic processing systems that compute with light - delivering a scalable, energy-efficient alternative to transistor-based architectures for next-generation AI and HPC applications.

As **LLVM / MLIR Compiler Architect - Photonic Computing (f/m/d)**, you will design and build the compiler stack that brings photonic computing to life. You will shape the interface between developers and hardware, define how software frameworks drive photonic execution, and co-design the system architecture that will power Q.ANT's next-generation products.

This isn't incremental optimization - it's defining the compiler structure from the ground up for a fundamentally new compute paradigm. You'll sit at the boundary to algorithms and software ecosystems, and you feed into low level software interfaces and hardware architecture. Your design decisions will shape how Q.ANT's photonic processors evolve across generations and how efficiently they execute the next generation of AI workloads.

- **Design, lead, and deliver** the Q.ANT **compiler stack** - shape the LLVM/MLIR-based compilation framework for photonic computing
- **Define the MLIR dialect**for Q.ANT and build the path into the hardware interfaces and co-design the system architecture and Instruction Set Architecture (ISA)
- **Shape the hardware design point** to ensure large parts of algorithms can execute on-device with high parallelism, low latency, and maximum utilization
- **Provide technical guidance** to algorithm and application teams - help internal teams develop and optimize high-performance compute kernels for photonic execution
- **Drive profiling and performance** **analysis** - analyze compiler-generated code to identify bottlenecks and optimization opportunities
- **Lead collaboration with external partners and internal teams** (system engineering, architecture, ASIC design) - coordinate compiler stack development while ensuring cohesive design across the hardware/software stack
- **Contribute to Q.ANT's Open Source** **initiatives** - engage with the LLVM/MLIR community and Open Source development practices

- **5+ years building compilers (LLVM/MLIR)**and **co-designing hardware architectures**, including profiling and performance analysis of compiler-generated code
- **Deep expertise in systems architecture**, **programming languages**, **and AI/scientific computing algorithms** - you understand how compute architectures work and what algorithms need from hardware
- **Master's degree or PhD** in Computer Science, Computer Engineering, or related field; equivalent industry experience considered
- **Fluent in English**; German language beneficial
- **Experience** with **novel** or **heterogeneous** **compute** **architectures** (GPUs, TPUs, FPGAs, custom accelerators) is a _plus_
- **Hands-on experience** **defining MLIR dialects** and **contributing to LLVM/MLIR Open Source projects** is a _plus_
- **Experience with AI frameworks** (PyTorch, JAX, TensorFlow) and **parallel** **programming** (OpenMP, MPI) is a _plus_
- **Background in photonics** is _beneficial_ (but not required)

- **Make impact at scale:** Help solve one of computing's biggest challenges - making growing demand in compute and sustainability go hand in hand
- **Work on the leading edge:** Photonic AI acceleration technologies that will define the next