COMPANY DESCRIPTION

We’re Checkout.com – you might not know our name, but companies like eBay, ASOS, Klarna, Uber Eats, and Sony do. That moment when you check out online? We make it happen.
Checkout.com is where the world checks out. Our global network powers billions of transactions every year, making money move without making a fuss. We spent years perfecting a service most people will never notice. Because when digital payments just work, businesses grow, customers stay, and no one stops to think about why.
With 19 offices spanning six continents, we feel at home everywhere – but London is our HQ. Wherever our people work their magic, they’re fast-moving, performance-obsessed, and driven by being better every day. Ideal. Because a role here isn’t just another job; it’s a career-defining opportunity to build the future of fintech.

JOB DESCRIPTION

As a Staff Data Scientist specialising in the AI Centre of Excellence you will lead LLM-based solutions’ design, development, and deployment, collaborating with cross-functional teams to deliver impactful AI-driven applications across our business.

QUALIFICATIONS:

• Proven track record of developing and deploying LLM-based solutions in an enterprise setting as a senior/staff scientist.
• Proficiency in Python and libraries such as TensorFlow, PyTorch, Hugging Face Transformers, and spaCy.Strong understanding of LLM architectures (e.g., GPT, BERT, T5) and experience fine-tuning them for specific tasks.
• Demonstrable experience in utilising different model architectures and training techniques to optimise performance
• Familiarity with prompt engineering techniques and frameworks like LangChain, LlamaIndex, or DSpy. Good understanding of LLM models, including other components like VectorDBs and document loaders.
• Strong analytical and problem-solving skills, with the ability to work with complex datasets and extract meaningful insights.
• Excellent verbal and written communication skills, with the ability to explain complex technical concepts to non-technical stakeholders.
• Strong ability to collaborate and communicate with a large and varied group of stakeholders to embed AI into workflows and product features.

Please refer the Job description for details