Java Backend Engineer (Mid) - Microservices, IAM & APIs

Genesis Digital Solutions; Lisboa; Hybride; EUR 42 000 - 66 000; Plein temps

Avantages offerts par ce poste

Flexible hours

Hybrid work

Training programs

Résumé du poste

Genesis Digital Solutions is seeking a Mid-Level Java Backend Developer in Lisbon to design and build scalable microservices for Checkout, MyAccount, and Order Processing features. You will own features end-to-end, from architecture discussions through deployment, while guiding junior engineers and aligning with engineering standards.

You'll work on IAM integration with Keycloak and Okta (OIDC, RBAC), RESTful and GraphQL APIs with OpenAPI docs, and event-driven patterns using AWS SQS and Solace.

Qualifications

• At least 4 years of professional experience in Java backend development.
• Strong experience designing and developing Java microservices.
• Experience building and maintaining RESTful APIs and GraphQL services.
• Knowledge of OpenAPI specifications and API documentation.
• Hands-on experience with Identity and Access Management (IAM), particularly Keycloak, Okta, OIDC, RBAC, and token customization.
• Experience with event-driven architectures and messaging technologies, ideally AWS SQS and Solace.
• Familiarity with code quality and security tools such as SonarQube and Snyk.
• Experience with testing, code reviews, and deployment processes.
• Ability to take ownership of features and contribute to technical and architectural discussions.
• Good communication skills and the ability to mentor and support junior team members.

Responsabilités

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

Connaissances

Java backend

Microservices

REST APIs

GraphQL

OIDC

RBAC

OpenAPI

AWS SQS

Solace

Code reviews

Mentoring

Architecture

Outils

Keycloak

Okta

AWS SQS

Solace

OpenAPI

Description du poste

Genesis Digital Solutions is seeking a Mid-Level Java Backend Developer in Lisbon to design and build scalable microservices for Checkout, MyAccount, and Order Processing features. You will own features end-to-end, from architecture discussions through deployment, while guiding junior engineers and aligning with engineering standards.

You'll work on IAM integration with Keycloak and Okta (OIDC, RBAC), RESTful and GraphQL APIs with OpenAPI docs, and event-driven patterns using AWS SQS and Solace.