Senior AI Engineer – AWS/TypeScript/JavaScript/Python/.NET Full Time NEW

Senior AI Engineer

Up to £900/day (Outside IR35)

6 months contract

UK – Fully Remote

We are working with a UK-based prop-tech business building a production-grade autonomous AI agent platform used by professionals in a high-transaction environment.

They are looking for a Senior AI Engineer to take a hands-on role in the design and delivery of agentic AI systems, focused on workflow automation, intelligent decision support, and deep integration with an existing commercial platform.

This is a delivery-focused contract role with genuine architectural responsibility.

Role Overview

You will design and implement autonomous and semi-autonomous AI agents that operate across customer workflows, ingest transactional data, and generate actionable insights.

The work is firmly production-oriented, this is not a research or experimentation role.

Key Responsibilities

Agentic AI & Automation

• Design and implement AI agent architectures for autonomous task execution
• Build self-learning workflows driven by user interaction and transactional data
• Implement multi-agent patterns and AI-augmented automation (including RPA where appropriate)
• Ensure security, data isolation and compliance are Embedded at platform level

AI-Driven Insights

• Develop systems for customer data analysis, trend detection and anomaly identification
• Deliver practical use cases such as lead qualification, task prioritisation and operational automation

Platform Engineering

• Build and maintain production-ready AI services across Front End and Back End systems
• Work with TypeScript (React)/JavaScript, .NET (key skill) on AWS
• Integrate AI services with internal platforms and third-party APIs
• Implement monitoring for agent behaviour, model performance and cost control

Required Experience

• 10+ years commercial software engineering experience
• Strong hands-on experience with TypeScript/JavaScript and .NET
• Proven experience working with LLM platforms/frameworks (OpenAI, Anthropic, LangChain, etc.)
• AWS experience – Lambda, ECS/EKS, S3, RDS, CloudFormation/CDK (Not flexible on Azure)
• Strong database experience, including MySQL and data pipelines
• Direct experience building autonomous agents, intelligent workflows, multi-agent systems or RPA
• Strong understanding of API design, system integration and software architecture

Nice to Have

• Experience with NLP or applied ML
• Exposure to MLOps, model evaluation or A/B testing
• Microservices and event-driven architectures
• Awareness of data privacy and AI security considerations