We are looking for a Senior Java / React Engineer to join a Unified Commerce team, contributing to the design and delivery of modern, scalable, and secure digital solutions.
This role combines hands-on development, architectural decision-making, technical leadership, and Identity & Access Management (IAM) expertise. You will work closely with product owners, architects, and engineering teams to shape the technical direction of strategic products.
Key Responsibilities
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Design and implement complex Java microservices.
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Define and promote architectural standards, coding best practices, and security guidelines.
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Lead IAM initiatives, including:
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Keycloak configuration and realm design
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Okta federation
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OAuth2 / OIDC authentication flows
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Drive technical discussions with stakeholders and represent the engineering team.
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Identify and resolve scalability, performance, and security challenges.
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Lead code reviews and software quality initiatives.
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Promote the adoption of tools such as SonarQube and Snyk.
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Mentor and support junior and mid-level engineers.
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Produce technical documentation, ADRs, and operational runbooks.
Requirements
Must Have
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Strong experience with Java and React.
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Experience building and maintaining Microservices Architectures.
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Solid understanding of IAM, OAuth2, OIDC, Keycloak, and Okta.
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Experience with software architecture and design patterns.
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Strong communication skills in both English and Portuguese (C1 level).
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Must be currently residing in Portugal.
The required English and Portuguese proficiency level is C1.
The location is Lisbon, with 3 days in the office. Candidates must reside in Portugal.
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