Lead Full Stack Engineer (Java + React)

We are looking for a highly skilled Lead Full Stack Engineer with strong experience in Java and React to contribute to the development of secure, scalable, and high-performance digital products.

This hybrid role is based in Lisbon and combines hands-on development across backend and frontend components with identity integration, architectural collaboration, mentoring, and the definition of engineering standards within a multidisciplinary squad.

5+ years

Full Time Hybrid

Lisbon (Portugal)

Salary Range*

Job No. 835

Key Responsibilities

• Design and implement full-stack features across Java backend services and React.js frontend components.
• Integrate Okta SSO and OIDC flows across distributed applications, configuring scopes and claims according to regional and business requirements.
• Build and maintain RESTful APIs with complete OpenAPI documentation.
• Implement event-driven patterns using AWS SQS and Solace.
• Manage frontend dependencies through npm and promote secure token-handling practices.
• Maintain high engineering standards through SonarQube, Snyk, and structured code review processes.
• Mentor junior engineers and support knowledge transfer within the squad.
• Participate in architectural discussions and help define platform engineering standards.
• Collaborate closely with technical and product stakeholders to deliver secure, scalable, and reliable solutions.

Knowledge, Skills and Experience

• 5+ years of professional software development experience.
• Strong experience with Java and Spring Boot.
• Experience building and maintaining RESTful APIs.
• Solid expertise in React.js.
• Knowledge of token storage best practices and silent renewal flows.
• Hands-on experience integrating Okta SSO, OpenID Connect, and OAuth 2.0 across distributed systems.
• Familiarity with OpenAPI for API documentation.
• Experience with event-driven architectures, particularly AWS SQS and Solace.
• Proficiency with npm and frontend dependency management.