Senior Java Backend Engineer | Microservices, AWS & IAM

Ytech; Lisboa; Presencial; EUR 55 000 - 85 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Training & certification

Professional growth

International project exposure

Resumo da oferta

Ytech, based in Lisboa, Portugal, seeks a Java Backend Developer with 4+ years of experience to join an international project delivering digital solutions in Checkout, MyAccount and ODR processing.

You will design, build and maintain scalable microservices, REST and GraphQL APIs, and contribute to architecture decisions. The role involves IAM integrations, cloud components, and collaboration with frontend teams to deliver high-quality software.

Qualificações

• More than 4 years of professional software development experience.
• Strong Java backend development experience.
• Experience with microservices architectures.
• Experience building REST APIs.
• Knowledge of GraphQL and OpenAPI/Swagger.
• Experience with authentication and authorization (OIDC, RBAC).
• Knowledge of Keycloak, Okta, RBAC and token management.
• Experience with messaging systems and asynchronous processing (AWS SQS).
• Experience with unit/integration testing and code reviews.
• Knowledge of SonarQube and Snyk for code quality and security.
• Collaborate with frontend teams (React).
• Ability to participate in architecture decisions and mentor juniors.
• Portuguese and English at C1 level.

Responsabilidades

• Design, develop and maintain scalable Java microservices.
• Define architecture and drive technical decisions for solutions.
• Own feature lifecycle from design to deployment.
• Develop and maintain REST and GraphQL APIs.
• Create and maintain OpenAPI/Swagger documentation.
• Integrate IAM with Keycloak/Okta and manage tokens (OIDC/RBAC).
• Implement asynchronous processing with AWS SQS/Solace.
• Ensure code quality and security via SonarQube and Snyk.
• Identify and resolve performance and security issues.
• Support and guide junior developers.
• Collaborate with frontend teams (React) on integrated solutions.
• Contribute to engineering standards and knowledge sharing.

Conhecimentos

Java

Backend development

Microservices

REST APIs

GraphQL

OpenAPI/Swagger

IAM (Keycloak/Okta/OIDC/RBAC)

AWS SQS/Solace

Unit testing

Code reviews

Mentoring juniors

React collaboration

Portuguese & English C1

Ferramentas

Swagger

SonarQube

Snyk

AWS

Descrição da oferta de emprego

Ytech, based in Lisboa, Portugal, seeks a Java Backend Developer with 4+ years of experience to join an international project delivering digital solutions in Checkout, MyAccount and ODR processing.

You will design, build and maintain scalable microservices, REST and GraphQL APIs, and contribute to architecture decisions. The role involves IAM integrations, cloud components, and collaboration with frontend teams to deliver high-quality software.