Senior Java Backend Engineer / Senior Software Engineer (Developer) - OMS (Order Management System)

Amaris Consulting; Paris; Sur place; EUR 80 000 - 120 000; Plein temps

Résumé du poste

Amaris Consulting in Paris is seeking an experienced Java Software Engineer to design, develop and operate backend microservices for omni-channel retail and order management solutions.

You will work with Spring, REST APIs, and cloud-native platforms, contributing to CI/CD pipelines, OMS integrations, and scalable systems in a fast-paced Agile environment.

Qualifications

• 5+ years of experience as a Java Software Engineer with strong Java 21 and Spring ecosystem.
• Proven experience developing microservices-based solutions using event-driven architectures and API-first principles.
• Experience with Order Management Systems (OMS), Fluent Commerce, supporting order orchestration and omni-retail processes is a must.
• Strong experience designing and implementing RESTful APIs (OpenAPI/Swagger) and working with JSON, XML, HTTP, and 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 Docker, Kubernetes, and CI/CD pipelines (GitLab).
• Experience with event messaging systems and integration patterns (AWS SQS, Solace, Pub/Sub).
• Familiarity with OAuth2, OIDC, and IAM solutions like Keycloak and Okta.
• Experience with IntelliJ, SonarQube, Datadog, Insomnia, and Atlassian suite (Jira, Confluence).

Responsabilités

• Analyse 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 OMS and retail platforms, supporting flows such as order orchestration, inventory visibility, fulfilment, returns, and payment flows.
• Maintain and improve existing services, ensuring high code quality and reliability.
• Troubleshoot and resolve software defects, integration issues, and performance bottlenecks.
• Collaborate with Support to investigate production incidents related to omni-retail and order management services.
• Work with DevOps to implement and improve CI/CD pipelines, automation, and deployment processes.
• Review functional specifications and translate them into scalable technical solutions.
• Collaborate with QA Engineers to support testing strategies and automated testing.
• Contribute to continuous product/solution improvement by recommending technical enhancements and optimizations.
• Participate actively in Agile ceremonies (daily stand-ups, sprint planning, sprint reviews, retrospectives).

Connaissances

Java Software Engineer

Spring Framework

Microservices

REST APIs

Cloud & CI/CD

Formation

BS/MS in Computer Science

Outils

IntelliJ

Maven

GitLab

SonarQube

Datadog

Insomnia

Jira

Confluence

Description du poste

• Analyse 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.
• Maintain and improve existing services, ensuring high code quality, maintainability, and reliability.
• 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.
• Review functional specifications and translate them into scalable and maintainable technical solutions.
• Collaborate with QA Engineers to support testing strategies and contribute to automated testing.
• Contribute to the continuous improvement of the Product/Solution by recommending technical enhancements and optimizations.
• Participate actively in Agile ceremonies (daily stand-ups, sprint planning, sprint reviews, retrospectives).

• Analyse 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.
• Maintain and improve existing services, ensuring high code quality, maintainability, and reliability.
• 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.
• Review functional specifications and translate them into scalable and maintainable technical solutions.
• Collaborate with QA Engineers to support testing strategies and contribute to automated testing.
• Contribute to the continuous improvement of the Product/Solution by recommending technical enhancements and optimizations.
• Participate actively in Agile ceremonies (daily stand-ups, sprint planning, sprint reviews, retrospectives).

Required Skills & Qualifications

Technical Skills

• 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 architectures and APIfirst principles.
• Experience working with Order Management Systems (OMS), Fluent Commerce, supporting order orchestration and omni-retail processes. THIS EXPERIENCE IS A MUST.
• Strong experience designing and implementing RESTful APIs (OpenAPI/Swagger) and working with JSON, XML, HTTP, and GraphQL.
• Experience building omni-retail and e-commerce solutions, including order lifecycle, inventory visibility, fulfilment, returns, 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).

DevOps & Tooling

• Build & IDE: IntelliJ, Maven
• Version Control: Git, GitLab
• Code Quality & Security: SonarQube, Snyk
• API Testing & Integration Tools: Insomnia, RobotFramework
• Collaboration & Documentation: Atlassian Suite (Jira, Confluence)
• Cloud technologies/platform: AWS, K8s, Docker, Helm

Soft Skills

• Strong problem solving and analytical skills.
• Excellent communication and ability to work with multinational, cross-functional teams.
• Proactive, self-driven, and eager to learn new technologies.
• Ability to work independently in a fast-paced Agile environment.

Education & Language

• Bachelor’s or master’s degree in computer science, Software Engineering, or a related field.
• Fluency in English (French or other languages is a plus).

Who are we?

Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses. With more than 1,000 clients across the globe, we have been rolling out solutions in major projects for over a decade - this is made possible by an international team of 7,600 people spread across 5 continents and more than 60 countries. Our solutions focus on four different Business Lines: Information System & Digital, Telecom, Life Sciences and Engineering. We're focused on building and nurturing a top talent community where all our team members can achieve their full potential. Amaris is your steppingstone to cross rivers of change, meet challenges and achieve all your projects with success.

At Amaris, we strive to provide our candidates with the best possible recruitment experience. We like to get to know our candidates, challenge them, and be able to give them proper feedback as quickly as possible. Here's what our recruitment process looks like:

Brief Call

Our process typically begins with a brief virtual/phone conversation to get to know you! The objective? Learn about you, understand your motivations, and make sure we have the right job for you!

Interviews

During the interviews, you will meet people from our team: your line manager of course, but also other people related to your future role. We will talk in depth about you, your experience, and skills, but also about the position and what will be expected of you. Of course, you will also get to know Amaris: our culture, our roots, our teams, and your career opportunities!

Case study

Depending on the position, we may ask you to take a test. This could be a role play, a technical assessment, a problem-solving scenario, etc.

We look forward to meeting you!