AI Researcher

Stack

Responsibilities

• ▹Train, fine-tune and improve Reson8's proprietary speech-to-text models across 24+ European languages, pushing accuracy on domain-specific vocabulary (medical, legal, financial)
• ▹Build and maintain a stable, reproducible experimentation platform so the team can run training experiments with confidence and track results systematically
• ▹Design and run experiments: formulate hypotheses around model architecture, training recipes, data mixes and domain adaptation strategies
• ▹Analyse results rigorously, document findings and ship what works into production
• ▹Work directly with the founders in a highly technical environment, with real ownership over the model roadmap
• ▹Train and run inference on Reson8's own GPU cluster in NL datacenters, owning the full loop from experiment to deployment
• ▹Evaluate new architectures, training techniques and tooling (NeMo, vLLM, TensorRT) and bring what works into the stack
• ▹Own your work end-to-end: identify research opportunities, run experiments, build supporting infrastructure and validate results in production

Requirements

• ▹Strong background in machine learning, with hands-on experience training and evaluating deep learning models (ideally in speech, NLP or sequence-to-sequence domains)
• ▹Proficiency in Python and PyTorch (strongly preferred)
• ▹You've actually trained models, not just fine-tuned notebooks
• ▹Experience building or contributing to experimentation infrastructure: experiment tracking, reproducible training pipelines, evaluation frameworks or similar tooling
• ▹Comfort reading research papers and translating ideas into working code

Nice to have

• ▹Speech recognition architectures (CTC, RNN-T, encoder-decoder ASR, Whisper-style models)
• ▹NVIDIA tooling: NeMo, TensorRT
• ▹Distributed training or multi-GPU workflows
• ▹Rust (used in performance-critical parts of the stack)
• ▹Kubernetes or container orchestration
• ▹Language-specific challenges in European languages (morphology, code-switching, diacritics)

Soft skills

What we offer

• ▹Salary competitive with the top of the market
• ▹Meaningful equity as an early employee with real influence over direction and culture
• ▹25 days of vacation

About the company

Reson8 aims to become a global leader in accurate, customisable speech-to-text for European languages, handling domain-specific jargon from medical consultations to legal depositions, and is available in 24 European languages so far. It is a small, highly technical team backed by VCs.