Research engineer

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Research engineer

Ljubljana, Slovenia

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About The Role
We’re looking for a Research engineer to join Soniox and help shape the future of real-time, multilingual speech and language AI. You’ll work at the intersection of cutting-edge research and high-performance engineering, turning state-of-the-art models into scalable, production-grade systems used by developers and enterprises worldwide.

This is a hands-on role where you’ll move fast, solve hard problems, and help bridge the gap between AI research and practical impact. If you’re excited about deploying LLMs, speech models, and real-time systems that power intelligent voice interfaces, Soniox is the place to make it happen.

In This Role, You Will

• Turn research into reality: Deploy and optimize transformer-based models for real-time inference across speech recognition, translation, and language understanding.
• Collaborate deeply: Work alongside researchers, engineers, and product leaders to design experiments, run evaluations, and ship features that improve user experience and performance.
• Build and optimize pipelines: Develop robust training, fine-tuning, and evaluation pipelines to continuously improve model performance and scalability.
• Own the system end-to-end: From prototyping new architectures to monitoring deployed models in production, you'll be responsible for building AI that works reliably in the real world.
• Stay on the edge: Keep up with the latest advances in AI, experiment with novel techniques, and help Soniox stay ahead in accuracy, speed, and efficiency.

You Might Thrive In This Role If You

• Have a strong background in deep learning, NLP, or speech technologies, and experience with transformer models (LLMs, ASR, MT, etc.).
• Are proficient in PyTorch and familiar with distributed training, fine-tuning techniques (LoRA, distillation, RLHF, etc.), and inference optimization.
• Have experience working with real-time or high-throughput systems, and care deeply about latency, reliability, and performance.
• Enjoy fast-paced environments where priorities evolve, and you're comfortable owning loosely scoped problems from start to finish.
• Have a Master’s or PhD in Computer Science, AI, or a related field—or equivalent practical experience.
• Bonus: Experience with ASR models, retrieval-augmented generation (RAG), or conversational reasoning systems.

Why Soniox

You’ll help build one of the most technically advanced AI platforms in the world — and shape how it reaches and supports users globally.

You’ll work directly with a world-class team of engineers and researchers solving frontier problems in speech and language AI.

You'll have a voice in how our company grows, how our customers succeed, and how AI transforms human communication.

Ready to join Soniox? Apply now