Senior Javascript Engineer

Immediate

. You’ll be working on Fabric, our digital publishing platform, to design and build scalable APIs and AI powered text, audio and video content services, that integrate internal systems with third party platforms.

Posted 3/4/2026full-timeLondon • 🇬🇧 United KingdomSenior💰 £76,000 per yearWebsite

Tech Stack

Tools & technologies

AWSCloudDistributed SystemsJavaScriptMySQLNode.jsTypeScript

About the role

Key responsibilities & impact

You’ll be working on Fabric, our digital publishing platform, to design and build scalable APIs and AI powered text, audio and video content services, that integrate internal systems with third party platforms.
Reporting to the Lead UI Developer, the Senior JavaScript Engineer will be expected to develop, maintain, and support our digital products in accordance with the business and technology objectives.
Immerse yourself in our technical ecosystem
Develop and test new features, and support existing ones
Build reusable code, packages and libraries for future use
Optimise code for maximum speed and scalability against an agreed performance budget
Use testing frameworks to ensure automated test coverage for platform functionality
Collaborate with other team members Delivery Manager and Product Owner to help plan new functionality or major enhancements
Write and improve technical documentation when necessary

Requirements

What you’ll need

Developing JavaScript APIs and services using Node.js and TypeScript
Working with Node/TypeScript within large-scale projects
Distributed systems, scalability and cloud architecture (preferably AWS)
Building and working with mixed data formats (structured and unstructured) and storage (e.g. blob storage, MySQL, Document Storage)
Building and integrating with RAG pipelines
Building and maintaining multi-step workflows and processes orchestrated by AI
LLM integration patterns
Implementing AI solutions using AWS, or an equivalent, such as:
Model access and orchestration e.g. Amazon Bedrock
Vector and semantic search e.g. Amazon OpenSearch

Benefits

Comp & perks

A relaxed working environment with regular socials including a summer festival
Immediate Community webinars, well-being initiatives and Mental Health First aiders
25 days holiday plus a day for your birthday. Our offices will be closed between Christmas and New Year’s which are in addition to your annual entitlement
Tailored training and development through our Love Learning platform
A progressive and transparent culture with clear career progression
Flexible / hybrid working plus early finish Fridays
Cycle to work scheme
Enhanced Family Policies including paternity, adoption and surrogacy leave. We also provide a pregnancy loss, fertility, and carers policy
Competitive pension plans and Life Assurance
A newly renovated modern office with lots of collaborative spaces

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Hard Skills & Tools

JavaScriptNode.jsTypeScriptAPIscloud architectureAWSMySQLDocument StorageAI solutionsRAG pipelines

Soft Skills

collaborationcommunicationtechnical documentationproblem-solvingplanning