Senior Data Scientist at marshmallow

✨ The Stack take on this marshmallow job

• 🏢 marshmallow has 6 jobs here, 6 with visa sponsorship see all
• 🛂 Skilled Worker visa. Standard minimum salary: £41,700 a year guide
• 💡 No salary shown. Ask marshmallow if it is above the minimum.

Updated 2026-11-05, from our data and official sources.

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About the role

Responsibilities:
- Design, train and iterate multimodal ML and Generative AI models to reduce claims cost and speed processing (emails, documents, summaries).
- Develop models for claims automation: negotiation, litigation strategy, total loss prediction and fraud signals.
- Prototype and deploy agentic AI solutions to automate claims workflows and decisioning.
- Partner closely with Product, Engineering and Operations to turn hypotheses into production-ready features.
- Work with MLOps to deploy, monitor and maintain models; define evaluation and feedback loops.
- Explore new data sources (open banking, telematics, external signals) and assess uplift.
- Set standards for experimentation, measurement and communicating impact/uncertainty to stakeholders.

Requirements:
- 5+ years building and shipping ML/AI systems with production deployment experience.
- Strong foundation in statistical modelling, ML, Generative and multimodal approaches.
- Practical MLOps experience: deployment, monitoring, evaluation and retraining pipelines.
- Experience with structured and unstructured data, model performance trade-offs and risk-based decisioning.
- Ability to influence cross-functional teams, communicate trade-offs and challenge technical proposals.
- Product-minded, system-level thinker with emphasis on scalable, robust solutions.

Responsibilities

Build and iterate on multimodal AI models and agentic solutions to automate and optimize the claims journey. Collaborate with cross-functional teams to deploy production-ready ML systems and improve AI infrastructure.

Requirements

Requires strong commercial experience delivering end-to-end machine learning solutions and shipping production AI systems. Must possess a strong statistical foundation and the ability to work cross-functionally with Product and Engineering teams.

Key skills

• Machine Learning — in 291 other listings on The Stack
• Generative AI — in 58 other listings on The Stack
• Multimodal AI — in 1 other listing on The Stack
• Agentic AI — in 39 other listings on The Stack
• MLOps — in 72 other listings on The Stack
• Statistical Modelling — in 13 other listings on The Stack
• Stakeholder Management — in 332 other listings on The Stack
• Production Deployment — in 11 other listings on The Stack
• Risk-based Decisioning
• System-level Thinking
• Data Analysis
• Experimentation

On The Stack (as of 2026-11-05)

• marshmallow has 5 other listings on The Stack, 5 of them marked as offering visa sponsorship.
• 214 visa-sponsored jobs in the United Kingdom on The Stack, posted in the last 60 days.
• 68 visa-sponsored data scientist jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about marshmallow

Is this Senior Data Scientist role still open?

It was posted on 2026-06-24. Listings more than 30 days old may no longer be active, so check marshmallow's site before applying.

Does marshmallow offer visa sponsorship?

This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on marshmallow's site.

Where is this role located?

The listing gives the location as United Kingdom. It is marked on-site.

What skills does this role ask for?

The listing names: Machine Learning, Generative AI, Multimodal AI, Agentic AI, MLOps, Statistical Modelling, Stakeholder Management, Production Deployment, Risk-based Decisioning, System-level Thinking, Data Analysis, Experimentation.