Senior JavaScript Engineer (LLM/RAG Integrations) - FTC - £76k
Posted 3 days ago by Creo Recruitment
£76,000 Per year
Fixed-Term
Hybrid
London Area, United Kingdom
Summary: The Senior Backend JavaScript Engineer will work on a digital publishing platform, focusing on designing and building scalable APIs and AI-powered content services. This role involves developing, maintaining, and supporting digital products while collaborating with team members to enhance functionality. The position is a 6-month fixed-term contract with a hybrid working arrangement based in West London. The engineer will report to the Lead UI Developer and contribute to both technical and business objectives.
Key Responsibilities:
- Immerse yourself in the 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 agreed performance budgets
- Use testing frameworks to ensure automated test coverage for platform functionality
- Collaborate with other team members including Delivery Managers and Product Owners to help plan new functionality or major enhancements
- Write and improve technical documentation where necessary
Key Skills:
- Developing JavaScript APIs and services using Node.js and TypeScript
- Working with Node.js/TypeScript within large-scale projects
- Experience with distributed systems, scalability, and cloud architecture (preferably AWS)
- Building and working with mixed data formats (structured and unstructured) and storage solutions (e.g. blob storage, MySQL, document storage)
- Building and integrating RAG pipelines
- Building and maintaining multi-step workflows and AI-orchestrated processes
- Understanding LLM integration patterns
- Implementing AI solutions using AWS or equivalent technologies, including: Model access and orchestration (e.g. Amazon Bedrock), Vector and semantic search (e.g. Amazon OpenSearch)
Salary (Rate): £76,000.00/year
City: London
Country: United Kingdom
Working Arrangements: hybrid
IR35 Status: fixed-term
Seniority Level: Senior
Industry: IT
Senior Backend JavaScript Engineer - 6 month Fixed Term Contract
Salary: Up to £76,000 per annum - Hybrid working from West London
About the role:
You’ll be working on a modern digital publishing and content 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 digital products in accordance with business and technology objectives.
Responsibilities:
- Immerse yourself in the 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 agreed performance budgets
- Use testing frameworks to ensure automated test coverage for platform functionality
- Collaborate with other team members including Delivery Managers and Product Owners to help plan new functionality or major enhancements
- Write and improve technical documentation where necessary
Requirements:
- Developing JavaScript APIs and services using Node.js and TypeScript
- Working with Node.js/TypeScript within large-scale projects
- Experience with distributed systems, scalability, and cloud architecture (preferably AWS)
- Building and working with mixed data formats (structured and unstructured) and storage solutions (e.g. blob storage, MySQL, document storage)
- Building and integrating RAG pipelines
- Building and maintaining multi-step workflows and AI-orchestrated processes
- Understanding LLM integration patterns
- Implementing AI solutions using AWS or equivalent technologies, including: Model access and orchestration (e.g. Amazon Bedrock) Vector and semantic search (e.g. Amazon OpenSearch)
Benefits:
- Relaxed working environment with regular socials
- Well-being initiatives and mental health support
- 25 days holiday plus birthday leave
- Additional office closure between Christmas and New Year
- Tailored training and development opportunities
- Progressive and transparent culture with clear career progression
- Flexible / hybrid working and early finish Fridays
- Cycle to work scheme
- Enhanced family policies including paternity, adoption, and surrogacy leave
- Competitive pension and life assurance
- Modern office environment with collaborative spaces