Senior Java Backend Architect - Freelance, Lisbon Hybrid

Shakers

Setúbal

Híbrido

EUR 83 000 - 152 000

Tempo integral

Há 3 dias

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Resumo da oferta

Shakers is seeking a Senior Java Backend Developer to join a Unified Commerce engineering squad on a freelance basis through Shakers. You will own design and implementation of complex microservices and drive architectural decisions in Lisbon, hybrid 3 days on-site.

You bring 8+ years of Java experience, expert Spring Boot, and hands-on with AWS SQS, Docker, Kubernetes, and IAM tooling (Keycloak, Okta, OIDC).

Qualificações

8+ years of software engineering experience.
Expert-level Java and Spring/Spring Boot.
Advanced microservices architecture experience.
Hands-on with Amazon SQS, Docker, Kubernetes, MongoDB, MySQL.
Experience with Keycloak, Okta, OIDC.
English C1 and Portuguese C1.

Responsabilidades

Lead design and implementation of complex Java microservices across Unified Commerce products.
Define and enforce architectural patterns, coding standards, and security practices for the squad.
Own IAM strategy: Keycloak realm design, Okta federation, OIDC flow architecture.
Drive technical discussions with product owners and architects, representing engineering.
Identify and resolve performance bottlenecks, scalability issues, and security vulnerabilities.
Lead code reviews and establish quality gates; champion SonarQube and Snyk adoption.
Mentor confirmed and junior engineers.
Produce technical documentation, ADRs, and runbooks.