Senior Java Engineer - Omni-Retail Backend (Lisbon, Hybrid)

EPAM Systems Inc; Viseu; Híbrido; EUR 75 000 - 90 000; Tempo integral

Resumo da oferta

EPAM Systems Inc. in Lisbon, Portugal, is seeking a Senior Java Developer to join a hybrid team focused on Omni Retail solutions. You will design, develop and optimize backend systems powering luxury maisons across ecommerce and omnichannel platforms.

You will work on microservices with Java 21, Spring, and OpenAPI, integrating with OMS and retail platforms, ensuring scalable, high‑performing services and robust CI/CD pipelines with DevOps.

Qualificações

• 5+ years of experience as a Java Software Engineer with strong expertise in Java 21 and the Spring ecosystem (Spring Boot, Spring Data JPA, Hibernate, Spring Cloud).
• Proven experience developing microservices-based solutions using event-driven architecture and API-first principles.
• Experience working with Order Management Systems (OMS), Fluent Commerce supporting order orchestration and omni-retail processes.
• Strong experience designing and implementing RESTful APIs (OpenAPI/Swagger) and working with JSON, XML, HTTP, GraphQL.
• Experience building omni-retail and e-commerce solutions including order lifecycle, inventory visibility, fulfilment, returns and payment flows.
• Proficiency with databases such as MySQL and MongoDB.
• Hands-on experience with containerized and cloud-native environments including Docker, Kubernetes and CI/CD pipelines (GitLab).
• Experience working with event messaging systems and integration patterns (e.G., AWS SQS, Solace, Pub/Sub architectures).
• Familiarity with security best practices including OAuth2, OIDC and IAM solutions such as Keycloak and Okta.
• Experience with modern development and testing tooling including IntelliJ, SonarQube, Datadog, Insomnia and the Atlassian suite (Jira, Confluence).

Responsabilidades

• Analyze business and technical requirements to design and develop robust backend solutions supporting omni-channel retail and order management processes.
• Develop, test, debug and deploy Java-based microservices ensuring scalability, reliability and performance.
• Design and implement integrations with Order Management Systems and retail platforms supporting key flows such as order orchestration, inventory visibility, fulfilment, returns and payment flows.
• Design, develop and maintain Java-based microservices ensuring seamless integration with systems involved in order management, fulfilment and retail operations.
• Troubleshoot and resolve software defects, integration issues and performance bottlenecks.
• Collaborate with the Support team to investigate and resolve production incidents related to omni-retail and order management services.
• Work with the DevOps team to implement and improve CI/CD pipelines, automation and deployment processes.

Conhecimentos

Java

Spring

Microservices

Event-driven

OMS

REST API

OpenAPI

OAuth2

Kubernetes

Docker

GitLab CI/CD

AWS SQS

Ferramentas

Docker

Kubernetes

GitLab

IntelliJ

SonarQube

Datadog

Insomnia

Jira

Confluence

Descrição da oferta de emprego

EPAM Systems Inc. in Lisbon, Portugal, is seeking a Senior Java Developer to join a hybrid team focused on Omni Retail solutions. You will design, develop and optimize backend systems powering luxury maisons across ecommerce and omnichannel platforms.

You will work on microservices with Java 21, Spring, and OpenAPI, integrating with OMS and retail platforms, ensuring scalable, high‑performing services and robust CI/CD pipelines with DevOps.