AI Research Engineer (PhD required)

At NeuralTrust, we’re looking for a AI Research Engineer (PhD required) to take our company to the next level. Join us!

About NeuralTrust

We’re a Barcelona-based, remote-first startup. Our SaaS platform provides the essential tools for large companies to integrate generative AI into their products and services in a secure, reliable, and measurable way. We’re backed by top European investors and institutions, and we have standing research agreements with Spanish universities.

Generative AI is the largest platform shift since the Internet and mobile. It’s transforming how people interact with companies, leading to a major shift towards natural language.

At NeuralTrust, we combine cutting-edge language models, large-scale data processing, and intuitive user experience to build technology that empowers enterprises worldwide. Our team is multinational, research-driven, and ambitious. If you want to apply your PhD expertise to solve real-world problems at scale, this is your opportunity.

What You Will Do

Design and implement novel AI-driven components of our platform.

Apply state-of-the-art research in NLP, LLMs, and generative AI to production systems.

Lead experiments in fine-tuning, evaluation, and deployment of advanced models.

Develop efficient pipelines for large-scale data and model training.

Collaborate with engineering and product teams to turn research into practical solutions.

Publish technical articles, internal papers, and contribute to our knowledge base.

Stay at the frontier of AI by evaluating new research and integrating findings.

⭐️ About You

This role requires a PhD in AI, Machine Learning, Natural Language Processing, Computer Science, or a closely related field.

PhD with strong research experience in AI / ML (NLP, generative AI, or similar).

Proven record of publications, patents, or significant contributions to the AI field.

Strong coding skills in Python and familiarity with frameworks like PyTorch or TensorFlow.

Solid foundation in algorithms, optimization, and applied statistics.

Hacker mentality : able to rapidly prototype, experiment, and adapt.

Comfortable bridging research and engineering : from theory to production.

Team player with a collaborative mindset and strong communication skills.

✨ Benefits

Competitive salary, aligned with your experience and impact.

High-growth, multicultural, inclusive, and friendly environment.

Flexible schedules and remote-first culture.

Opportunity to drive groundbreaking AI research into production.

Mentorship, collaboration, and visibility in the global AI ecosystem.

Be part of one of the hottest startups in Barcelona.