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Shakers

Lisbon / Global

Senior Java Backend Developer

Job Description

pJoin a Unified Commerce engineering squad as a Senior Java Backend Developer, on a freelance basis through strongShakers /strong. Shakers connects senior independent talent with product companies across Europe - this is a freelance engagement, not an in-house hire, and the client is disclosed once you're through initial screening. /ppbr/ppstrongWhat you'll own: /strong /pulliLead design and implementation of complex Java microservices across Unified Commerce products /liliDefine and enforce architectural patterns, coding standards, and security practices for the squad /liliOwn IAM strategy: Keycloak realm design, Okta federation, OIDC flow architecture /liliDrive technical discussions with product owners and architects, representing engineering /liliIdentify and resolve performance bottlenecks, scalability issues, and security vulnerabilities /liliLead code reviews and establish quality gates; champion SonarQube and Snyk adoption /liliMentor confirmed and junior engineers /liliProduce technical documentation, ADRs, and runbooks /li /ulpbr/ppstrongWhat we're looking for: /strong /pulli8+ years of software engineering experience /liliExpert-level Java and Spring/Spring Boot /liliAdvanced microservices architecture experience /liliHands-on with Amazon SQS, Docker, Kubernetes, MongoDB, MySQL /liliExperience with Keycloak, Okta, OIDC /liliFamiliarity with SonarQube and Snyk /liliEnglish C1, Portuguese C1 /liliAvailable hybrid, 3 days/week on-site in Lisbon /li /ulpbr/p

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