Staff AI Platform Engineer

Moody; Greater London; Hybrid; GBP 120,000 - 180,000; Full time

Job summary

Moody’s is seeking a Staff Software Engineer - AI to lead the design and delivery of scalable AI platforms and intelligent applications. You will mentor engineers, drive production-ready AI solutions, and partner with cross-functional teams to translate strategic priorities into robust technical implementations.

You will work on cutting-edge AI technologies, including LLMs, retrieval-augmented generation, and orchestration, ensuring reliability, security, and cost efficiency across

Qualifications

• 8+ years of experience in software engineering, with deep hands-on experience designing, coding, testing, and operating scalable, resilient, production-grade backend systems and cloud-native services.
• Expert-level coding in Python, TypeScript, Go or similar, with ability to contribute production code while guiding technical direction.
• Deep hands-on expertise building enterprise AI applications using LLMs, agents, retrieval-augmented generation, and model optimisation techniques.
• Proven ability to take complex AI solutions from prototype to production with performance, scalability, reliability and cost trade-offs.
• Expert knowledge of AWS/GCP/Azure with Docker, Kubernetes in production environments.
• Strong experience designing APIs, distributed systems, event-driven architectures, data pipelines, PostgreSQL, MongoDB, Redis, and observability.
• Ability to influence technical direction while mentoring engineers through reviews and hands-on problem solving.
• Deep expertise in AI with a track record of improving platform scalability and efficiency.
• Commitment to responsible AI practices including governance, monitoring, and ongoing improvement of AI-enabled products.

Responsibilities

• Design, code, and lead delivery of scalable AI platforms and intelligent applications bring AI capabilities into production.
• Act as hands-on technical leader, designing, coding, reviewing, debugging, and improving production systems supporting AI-powered products.
• Design scalable backend services, APIs, data pipelines, inference pipelines, and platform capabilities for real-time/batch workloads.
• Implement advanced LLM applications using RAG, prompt orchestration, evaluation frameworks, and model optimisation.
• Make key technical decisions with focus on maintainability, performance, reliability, security, and cost.
• Establish engineering best practices through code reviews, automated testing, observability, and operational excellence.
• Champion MLOps practices including model lifecycle management, prompt versioning, and deployment pipelines.
• Partner with product managers, data scientists, engineers to translate priorities into robust solutions.
• Build reusable frameworks and tooling to accelerate AI development across teams.
• Evaluate emerging AI tech through prototypes and POCs, guiding implementation choices.

Skills

Python

TypeScript

Go

AI/ML systems

Cloud platforms (AWS/GCP/Azure)

APIs & distributed systems

DevOps / CI/CD

Mentoring engineers

Responsible AI

Education

Bachelor’s degree or higher in Computer Science, Software Engineering, Artificial Intelligence, or related field

Tools

Docker

Kubernetes

Elastic Container Service

PostgreSQL

MongoDB

Redis

Vector databases

Job description

Moody’s is seeking a Staff Software Engineer - AI to lead the design and delivery of scalable AI platforms and intelligent applications. You will mentor engineers, drive production-ready AI solutions, and partner with cross-functional teams to translate strategic priorities into robust technical implementations.

You will work on cutting-edge AI technologies, including LLMs, retrieval-augmented generation, and orchestration, ensuring reliability, security, and cost efficiency across