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# Back End Developer (Node.js)

- **Company:** ARC IT Recruitment
- **Location:** London, UK (Remote available)
- **Experience:** Expert
- **Salary:** £104,000.0
- **Contract:** Temporary to permanent
- **Skills:** .NET Framework, Application Programming Interfaces (APIs), C Sharp (Programming Language), Cloud Computing, Profiling, Continuous Integration, Programming Tools, Python (Programming Language), Node.Js, Standard Sql, TypeScript, Datadog, Large Language Models, Caching, Terraform, Dynatrace
- **Published:** August 10, 2026
- **Apply:** https://www.reed.co.uk/jobs/back-end-developer-nodejs/57203841

## About the Role

* Strong commercial experience with Node.js and TypeScript
 * Experience building pricing, inventory or availability systems
 * Background in a high-traffic e-commerce, marketplace or travel platform
 * Strong understanding of caching, data freshness and cache invalidation
 * Experience designing reliable APIs using retries, timeouts, idempotency and backpressure
 * Good SQL knowledge
 * Experience integrating unreliable or poorly documented third-party APIs
 * Strong production ownership across testing, CI/CD, deployment and monitoring
 * Regular use of AI coding tools or LLM-based development tools

Nice to have

 * C#/.NET or Python
 * Cloud platforms and Terraform
 * Datadog, distributed tracing, profiling or flame graphs
 * Dynamic pricing, edge technologies or travel-sector experience

This role would suit an experienced engineer who is comfortable owning complex pricing and inventory problems in a high-volume transactional environment.

## Description

We're supporting a high-traffic global e-commerce platform in its search for a Senior Software Engineer to improve its pricing, inventory and availability systems.

This is a hands-on role focused on building reliable, scalable services that process millions of customer searches across multiple international markets.

What you'll be working on

 * Building and improving pricing, inventory and availability services
 * Developing quote-caching and data freshness strategies
 * Designing resilient APIs and third-party integrations
 * Reducing latency and improving platform performance
 * Balancing pricing accuracy with cache efficiency and infrastructure cost
 * Improving monitoring, tracing and production observability
 * Owning solutions from investigation through to deployment


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