SW engineer - AI frameworks

Semidynamics; Barcelona; Hybrid; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Hybrid work model: 4 days in-office, 1

Work from anywhere 1 week/year

Job summary

Semidynamics in Barcelona is seeking a software engineer with strong C++ and C skills, plus Python proficiency, to work on Linux-based environments and multithreaded applications. Knowledge of debugging and profiling with gdb is essential.

The role emphasizes performance and reliability in a fast-growing deep-tech semiconductor context. The position offers a hybrid work model: four days in the Barcelona city-center office and one day remote, with a unique option for one week per year to work

Qualifications

• Strong experience with modern C++ (C++11/14/17/20) required.
• Proficient in C programming and Linux environments.
• Working knowledge of Python and multithreading.
• Experience with software profiling and debugging using gdb.

Skills

C++

C programming

Python

Linux

Multithreading

gdb

English (C1)

Tools

CMake

LLVM/GCC

PyTorch

ONNX Runtime

pybind11

CUDA/ROCm

Job description

What You'll Bring

Required:

• Strong experience with modern C++
• C programming experience
• Working knowledge of Python
• Experience with Linux environments
• Multithreading experience
• Software profiling and debugging (gdb)
• Strong problem-solving skills and attention to detail
• English proficiency at C1 level

Nice to Have:

• PyTorch dispatcher/ATen internals
• vLLM
• SGLang
• CMake
• LLVM/GCC
• Hardware/software interfacing experience
• Multi-GPU deployment
• C/C++ and Python interoperability (pybind11)
• ONNX Runtime execution provider (EP) registration
• Open source contributions
• CUDA/ROCm
• AI kernel development
• Bare-metal programming
• AI application development
• Workload analysis

Why Semidynamics?

• Join one of Europe's most promising deep-tech semiconductor scale-ups
• Accelerated career development path
• Hybrid model: 4 days/week at our Barcelona city-center office, 1 day WFH
• 1 week per year of "work from anywhere in the world"
• Competitive compensation package