At a Glance
- Tasks: Train and deploy cutting-edge NLP models while owning the entire pipeline.
- Company: Join Chattermill, a leading AI-native customer experience platform in London.
- Benefits: Remote work, mentorship opportunities, and direct impact on innovative projects.
- Other info: Dynamic environment with significant career growth potential.
- Why this job: Be part of a high-performing team solving complex text-analysis challenges.
- Qualifications: MSc or PhD in Machine Learning with strong PyTorch skills required.
Job Title
Senior Machine Learning Scientist
Salary
Not Disclosed
Company Description
Chattermill Analytics Limited is a Series B funded, AI-native customer experience intelligence platform based in London. They build proprietary NLP models that help global brands process and understand messy, real-world customer feedback at scale, moving beyond simple API wrapping to develop truly custom machine learning architectures and agentic systems.
Job Description
Join a small, senior team to build and ship the next generation of NLP models. You will own the end-to-end pipeline, from training and fine-tuning custom transformer models to deploying production-ready agentic systems. This role is perfect for a scientist who wants to solve complex text-analysis problems using bespoke, high-performance solutions.
Location
Remote, Europe
Why this role is remarkable
- Work on a proprietary ML stack involving extraction, retrieval, and summarization rather than just wrapping third-party APIs or basic LLM prompts.
- Join a high-performing Series B company where you have direct ownership over significant parts of the model pipeline and immediate product impact.
- Collaborate in an elite, senior environment with direct mentorship opportunities while exploring cutting-edge agentic and RAG architectures for customer intelligence.
What You Will Do
- Train, evaluate, and iterate on custom LLMs and transformer architectures using PyTorch, custom training loops, and parameter-efficient fine-tuning like LoRA.
- Build and maintain advanced retrieval pipelines, reranking systems, and data mining agents to extract insights from large-scale, messy customer feedback.
- Design robust evaluation frameworks and metrics to benchmark non-deterministic systems and automate model comparisons before shipping production-quality code to customers.
The ideal candidate
- Holds an MSc or PhD in Machine Learning, Computer Science, or a related STEM field with deep expertise in modern transformer architectures.
- Possesses strong PyTorch skills, including the ability to write custom training loops and perform tensor-level debugging for production-grade NLP models.
- Has practical experience building and serving large-scale generative AI or agentic systems using frameworks such as vLLM, DeepSpeed, or PEFT techniques.
Senior Machine Learning Scientist at Chattermill Analytics Limited in London employer: Jack & Jill
At Jack & Jill, we pride ourselves on being an exceptional employer that fosters a dynamic and innovative work culture. Our team enjoys a range of benefits including flexible working arrangements, professional development opportunities, and a collaborative environment that encourages creativity and growth. Located in a vibrant area, we offer unique advantages such as access to cutting-edge technology and the chance to work with industry leaders in AI-driven marketing strategies.
