Full Stack Engineer

Salary: £70,000 - 75,000 per year

Requirements:

• At least 10 years of software engineering or solution architecture experience.
• Deep, hands-on Elasticsearch expertise covering cluster architecture, mappings, aggregations, Lucene internals, performance tuning, and snapshot/restore.
• Extensive production experience with Azure AI Search, including indexers, custom skillsets, vector search, and semantic rankers.
• Strong JavaScript/TypeScript development skills using React, Angular, or Vue.
• Experience with Azure Web Apps, Functions, Event Grid, Key Vault, API Management, and Private Endpoints.
• Strong Docker, Kubernetes/AKS, and CI/CD experience.
• Infrastructure-as-Code experience using Terraform or Bicep.
• Practical experience delivering enterprise GenAI and RAG solutions using LangChain or LlamaIndex.
• Strong communication skills and the ability to influence architectural decisions at principal level.
• Relevant Microsoft Azure or Elastic certifications are advantageous.

Responsibilities:

• Lead the design and delivery of enterprise search and AI-driven applications.
• Design and optimise enterprise search solutions using Elasticsearch and Azure AI Search.
• Define Elasticsearch cluster architecture, index mappings, aggregation queries, and lifecycle strategies.
• Improve search relevance, indexing performance, query latency, and platform resilience.
• Build Azure AI Search solutions using indexers, custom skillsets, vector search, and semantic ranking.
• Develop responsive, search-focused applications using JavaScript/TypeScript and React, Angular, or Vue.
• Design and integrate APIs and backend services across the Azure ecosystem.
• Build enterprise RAG and GenAI solutions using technologies such as LangChain or LlamaIndex.
• Deploy applications using Docker, Kubernetes, and AKS.
• Implement CI/CD pipelines through Azure DevOps or GitHub Actions.
• Deliver infrastructure using Terraform or Bicep.
• Provide technical leadership, architectural guidance, and engineering best practices.

Technologies:

• AI
• API
• Angular
• Azure
• Backend
• CI/CD
• DevOps
• Docker
• ElasticSearch
• GitHub
• JavaScript
• Kubernetes
• RAG
• React
• Terraform
• TypeScript
• Vue
• Web
• Cloud
• Fullstack

More:

We are seeking a Principal Full Stack Engineer for a six-month contract, Outside IR35, based in London with two days onsite. This is a senior, hands-on role combining search architecture, full-stack development, Microsoft Azure, DevOps, and Generative AI.

last updated 40 week of 2026