> Markdown version of [/jobs/ext/3021669-backend-developer-for-retail-pos-platforms](https://www.wearedevelopers.com/jobs/ext/3021669-backend-developer-for-retail-pos-platforms). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# backend developer for retail POS platforms

- **Company:** Phasesimpact
- **Location:** London, UK
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Application Integration Architecture, Cloud Engineering, Databases, Continuous Integration, Data Synchronization, Software Debugging, DevOps, PostgreSQL, Message Broker, Node.Js, OAuth, Performance Tuning, RabbitMQ, Cloud Services, Single Sign-On, Test Data, Web Platforms, Backend, Event Driven Architecture, Infrastructure Automation Frameworks, Performance Monitor, Integration Frameworks, Apache Kafka, Graphql, Front End Software Development, Serverless Computing, Microservices
- **Published:** September 21, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/backend-developer-for-retail-pos-platforms/47833673

## About the Role

Описание:On develops retail technology and a future-ready Point of Sale ecosystem that connects physical stores with digital platforms and cloud services. Its Retail Experience team builds technology for store operations and composable commerce.Задачи:Design, build, and scale backend services powering POS integrations across ERP, eCommerce, CRM, inventory, and loyalty platformsDevelop performant, secure, and easy-to-consume REST and GraphQL APIsImplement real-time and batch data synchronization, OAuth and SSO authentication flows, and secure event pipelinesContribute to cloud-native, event-driven architecture for global retail operationsBuild scalable integration patterns using Kafka, RabbitMQ, and serverless workflowsSupport observability through proactive monitoring, alerting, and performance tuning with tools such as NewRelicEnsure reliability through contract tests, load tests, and test data pipelinesCollaborate with QA and DevOps to streamline CI/CD and improve release

## Description

confidenceParticipate in incident response and post-mortem analysisPartner with frontend, product, and vendor teams to align integration design with platform capabilitiesInfluence technical decisions during vendor evaluations and rollout phasesImpact roadmap decisions by sharing technical insights and platform implicationsContribute to the broader architecture vision for On's composable commerce technology stackТребования:3+ Years of backend engineering experience with modern technologies such as Node.js and TypeScriptProven experience integrating APIs across commerce, ERP, OMS, or CRM domainsFamiliarity with headless commerce, microservices, and composable architecture principlesExperience with message brokers such as Kafka and asynchronous data processingSolid understanding of databases such as PostgreSQL and infrastructure-as-code tools such as TerraformExperience designing, scaling, and monitoring cloud-native services on AWS, GCP, or AzureFamiliarity with OAuth2, token-based
authentication, and secure service designStrong debugging and telemetry skills across logs, traces, metrics, and real-time alertingУсловия:Access to personal self-care support for physical and mental well-beingSupportive, team-oriented environment focused on growth, learning, exploration, and innovationEqual Opportunity Employer committed to a fair and inclusive work environment #J-18808-Ljbffr


## Related Videos

- [APIs and Architecture for scaling omnichannel payments](https://www.wearedevelopers.com/videos/90-apis-and-architecture-for-scaling-omnichannel-payments)
- [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect)
- [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library)
- [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform)
- [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner)
- [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue)

## Related Articles

- [20 Essential Tools For Backend Development](https://www.wearedevelopers.com/magazine/218-20-essential-tools-for-backend-development)
- [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)
- [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers)
- [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again)
- [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)
- [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift)