Java backend developer in e-commerce

Komodo Consulting is a technology and strategy firm specializing in Digital Transformation. Operating in Portugal and Poland, we provide IT Consulting & Nearshore services. We support both public and private sector organizations through two main areas: Consulting — with a focus on strategy, investment analysis, and digital process improvement; IT Team Augmentation — helping clients scale and strengthen their tech teams. We are seeking a Java Backend Developer to work on a Technology project.

• Design and implement scalable Java microservices for Checkout, MyAccount, and ODR Processing features;
• Own the full feature lifecycle, including architecture discussion, implementation, testing, code review, and deployment;
• Integrate and configure Keycloak and Okta IAM flows, including OIDC, RBAC, and token customization;
• Build and maintain RESTful and GraphQL APIs with full OpenAPI documentation;
• Implement event-driven patterns using AWS SQS and Solace messaging;
• Enforce quality standards through SonarQube, Snyk, and code review practices;
• Mentor junior engineers and contribute to knowledge transfer within the squad;
• Participate in architectural decisions and contribute to the client's engineering standards.

• 4+ years of experience as a Java Backend Developer;
• Strong proficiency in Java and React;
• Experience with microservices architecture and RESTful and GraphQL API development;
• Hands-on experience with Keycloak and/or Okta IAM flows, including OIDC and RBAC;
• Experience with event-driven architectures using AWS SQS and/or Solace messaging;
• Familiarity with code quality tools such as SonarQube and Snyk;
• C1 level proficiency in both English and Portuguese;
• Must be based in Portugal.

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