AI Platform Engineer — Cloud-Native AI Infra & Guardrails

Barclays; Greater London; On-site; GBP 90,000 - 140,000; Full time

Job summary

Barclays is seeking an AI Platform Engineer in London to design, build, and own core platform subsystems such as the AI Gateway, inference routing, guardrails, and observability. You will mentor junior engineers while delivering secure, scalable production-grade solutions aligned with architectural vision.

The role blends platform architecture with hands-on engineering, requiring strong skills in Python or Go/Java, AWS, Kubernetes, and GenAI technologies.

Qualifications

• Cloud-native distributed systems end-to-end ownership.
• Extensive Python (FastAPI/asyncio) or Go/Java for production APIs and microservices.
• AWS and Kubernetes at scale including EKS, Bedrock, IAM, RDS/Aurora.
• GenAI/Agentic AI tech with LangGraph/LangChain or Google ADK, MCP/A2A, RAG pipelines, and LLM integration.

Responsibilities

• Develop and deliver high-quality software with scalable performance.
• Collaborate with product managers, designers, and engineers to define requirements.
• Participate in code reviews and promote coding excellence.
• Stay informed on tech trends and contribute to technology communities.
• Adhere to secure coding practices and implement unit tests.

Skills

Python

Go/Java

AWS

Kubernetes

LangChain

LLM integration

APIs

Tools

AWS

Kubernetes

EKS

Bedrock

IAM

RDS/Aurora

Envoy

OIDC

Job description

Barclays is seeking an AI Platform Engineer in London to design, build, and own core platform subsystems such as the AI Gateway, inference routing, guardrails, and observability. You will mentor junior engineers while delivering secure, scalable production-grade solutions aligned with architectural vision.

The role blends platform architecture with hands-on engineering, requiring strong skills in Python or Go/Java, AWS, Kubernetes, and GenAI technologies.