Data Scientist / Engineer

Searchability; Greater London; Hybrid; GBP 125,000 - 150,000; Full time

Job summary

A notable tech consulting firm is seeking an experienced Data Science / Data Engineering Contractor for a hybrid role in London. You will design and develop data-driven applications, build data workflows, and maintain cloud-based AI platforms. Ideal candidates will have extensive experience with Python, JavaScript, and AWS, alongside strong commercial background in data engineering or data science. An active SC Clearance is required. This outside IR35 contract offers long-term engagement with potential extensions.

Qualifications

• Strong commercial experience in data engineering and/or data science roles.
• Hands-on experience building data pipelines and AI-enabled workflows.
• Excellent Python development skills for data processing.

Responsibilities

• Design and develop data-driven applications for analytics and ML.
• Build and orchestrate data workflows using LangChain and LangGraph.
• Deploy and maintain data and AI platforms on AWS.

Skills

Data engineering

Data science

Python

JavaScript

TypeScript

AWS deployment

Tools

LangChain

LangGraph

Job description

• Location:London (Hybrid Working)
• Contract:Outside IR35
• Clearance:Active SC Clearance required

Overview

We are seeking an experienced Data Science / Data Engineering Contractor to join a high‑impact programme based in London, working on advanced data‑driven and LLM‑enabled platforms. This is an outside IR35 contract offering hybrid working, ideal for contractors with strong experience building scalable data pipelines, analytics services, and AI‑enabled systems in cloud environments.

You will play a key role in designing, developing, and operationalising data‑centric solutions that underpin modern AI and LLM‑based applications.

Key Responsibilities

• Design and develop data‑driven applications and services that support analytics, ML, and LLM use cases
• Build and orchestrate data workflows and LLM pipelines using LangChain and/or LangGraph
• Develop scalable data processing and backend services using Python
• Work with structured and unstructured data to enable analytics, experimentation, and AI model integration
• Contribute to frontend or full‑stack development using JavaScript / TypeScript where required
• Deploy, scale, and maintain data and AI platforms on AWS
• Collaborate with the wider team to deliver end‑to‑end data solutions
• Ensure data solutions meet security, performance, and maintainability standards expected in secure environments

Required Skills & Experience

• Strong commercial experience in data engineering and/or data science roles
• Hands‑on experience building data pipelines and AI‑enabled workflows using LangChain and/or LangGraph
• Excellent Python development skills for data processing and backend services
• Solid experience with JavaScript and TypeScript
• Proven experience deploying data platforms and services on AWS
• Strong understanding of data architecture, APIs, and cloud‑native development
• Active SC Clearance (must be in place and transferable)

Desirable Experience

• Experience supporting LLM‑based analytics, retrieval‑augmented generation (RAG), or agentic data workflows
• Exposure to MLOps, data observability, monitoring, or model lifecycle management
• Experience with large‑scale data processing, feature engineering, or analytics platforms
• Previous experience working in government, defence, or highly regulated environments

Working Arrangements

• Hybrid working – a mixture of the London office and remote
• Outside IR35 contract
• Long‑term programme with extension potential

Apply

If you’re an SC Cleared Data Engineer or Data Scientist looking for an outside IR35 contract working with modern data platforms, LLM frameworks, and AWS, please apply with your latest CV.