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# backend developer for POS platforms

- **Company:** Описаниеon
- **Location:** London, UK
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Application Integration Architecture, Microsoft Azure, Databases, Continuous Integration, Data Synchronization, Software Debugging, DevOps, PostgreSQL, Message Broker, Node.Js, OAuth, Performance Tuning, RabbitMQ, Newrelic, Service Design, Single Sign-On, Test Data, TypeScript, Data Processing, Backend, Event Driven Architecture, Infrastructure Automation Frameworks, Performance Monitor, Integration Frameworks, Apache Kafka, Graphql, Front End Software Development, Terraform, Serverless Computing, Microservices
- **Published:** September 21, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/backend-developer-for-pos-platforms/47840650

## About the Role

confidence;Participate in incident response and post-mortem analysis to improve platform stability;Partner with frontend, product, and vendor teams to align integration design with platform capabilities;Influence technical decisions during vendor evaluations and rollout phases;Impact roadmap decisions by sharing technical insights and platform implications;Contribute to the broader architecture vision for On's composable commerce technology stack.Требования3+ Years of backend engineering experience with modern technologies such as Node.js and TypeScript;Proven experience integrating APIs across commerce, ERP, OMS, or CRM domains;Familiarity with headless commerce, microservices, and composable architecture principles;Experience with message brokers such as Kafka and asynchronous data processing;Solid understanding of databases such as PostgreSQL and infrastructure-as-code tools such as Terraform;Skilled in designing, scaling, and monitoring cloud-native services on AWS, GCP, or
Azure;Familiarity with OAuth2, token-based authentication, and secure service design;Strong debugging and telemetry skills across logs, traces, metrics, and real-time alerting.УсловияOffice role in London, England, United Kingdom; On is an Equal Opportunity Employer committed to a fair and inclusive work environment free from discrimination. #J-18808-Ljbffr

## Description

ОписаниеOn creates performance-oriented products and retail experiences that connect physical stores with digital commerce. Its Retail Experience team develops in-store technology supporting seamless omnichannel journeys and global retail operations.ЗадачиDesign, build, and scale backend services powering POS integrations across ERP, eCommerce, CRM, inventory, and loyalty platforms;Develop performant, secure, and easy-to-consume REST and GraphQL APIs;Implement real-time and batch data synchronization, OAuth and SSO authentication flows, and secure event pipelines;Contribute to cloud-native, event-driven architecture for global retail operations;Build scalable integration patterns using Kafka, RabbitMQ, and serverless workflows;Support observability through proactive monitoring, alerting, and performance tuning with tools such as NewRelic;Ensure reliability through contract tests, load tests, and test data pipelines;Collaborate with QA and DevOps to streamline CI/CD and improve release


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