Back End Developer (Node.js)

Back End Developer (Node.js)

Senior Software Engineer – Pricing & Inventory (Node/TypeScript)

Contract: 6 months initially

Rate: Up to £420 per day, Outside IR35

Location: Can be worked fully remote

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

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

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

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• C#/.NET or Python
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• Cloud platforms and Terraform
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• Datadog, distributed tracing, profiling or flame graphs
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• Dynamic pricing, edge technologies or travel-sector experience
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This role would suit an experienced engineer who is comfortable owning complex pricing and inventory problems in a high-volume transactional environment.