backend developer for retail POS platforms

Enfint; Greater London; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Self-care support

Growth‑oriented environment

Inclusive workplace

Job summary

On ищет опытного бэкенд-инженера для разработки и масштабирования сервисов интеграций POS с ERP, eCommerce, CRM и другими системами. Вы будете создавать REST/GraphQL API, обеспечивать безопасность и высокую доступность, строить потоковую синхронизацию данных и участие в архитектуре composable retail stack.

Требуется 3+ года в бэкенд-разработке с Node.js/TypeScript, опыт работы с Kafka и Terraform, знание OAuth2 и мониторинга.

Qualifications

• 3+ года бэкенд-разработки с Node.js и TypeScript.
• Опыт интеграции API в рамках commerce/ERP/OMS/CRM.
• Знание headless commerce, микросервисной архитектуры и композируемых подходов.

Responsibilities

• Проектирование, создание и масштабирование бэкенд-сервисов для интеграций POS с ERP, eCommerce, CRM и др.
• Разработка REST и GraphQL API; обеспечение их производительности и безопасности.
• Реализация синхронизации данных в реальном времени и пакетной обработки, OAuth/SСO и безопасных конвейеров событий.
• Разработка облачно-родной, событийно-ориентированной архитектуры.
• Построение масштабируемых паттернов интеграции на Kafka, RabbitMQ и Serverless.
• Обеспечение наблюдаемости через мониторинг и алертинг (NewRelic), контрактные/нагрузочные тесты и пайплайны данных.
• Сотрудничество с QA и DevOps для CI/CD и надежных релизов.
• Участие в инцидент-менеджменте и постмортем-анализе.
• Взаимодействие с фронтендом, продуктом и поставщиками для выравнивания дизайна интеграций.

Skills

Node.js

TypeScript

API integration

Microservices

Kafka

PostgreSQL

Terraform

Cloud platforms

OAuth2

Telemetry

Tools

Kafka

Terraform

Job description

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 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 confidence
• Participate in incident response and post-mortem analysis
• 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

Требования:

• 3+ 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
• Experience 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

Условия:

• Access to personal self-care support for physical and mental well-being
• Supportive, team-oriented environment focused on growth, learning, exploration, and innovation
• Equal Opportunity Employer committed to a fair and inclusive work environment