Senior Java/React Engineer – IAM & Microservices (Lisbon)

emagine; Lisboa; Hybrid; EUR 65,000 - 90,000; Full time

Job summary

emagine is seeking a Senior Java / React Engineer to join a Unified Commerce team in Lisbon. You will contribute to design, delivery of modern, scalable digital solutions and own critical IAM initiatives while collaborating with product owners and architects.

This hands-on role blends coding, architecture, and leadership, with opportunities to promote security standards, oversee microservices, and mentor junior engineers.

Qualifications

• Strong experience with Java and React.
• Experience building and maintaining Microservices Architectures.
• Solid understanding of IAM, OAuth2, OIDC, Keycloak, and Okta.
• English and Portuguese proficiency at C1 level.
• Must be currently residing in Portugal.

Responsibilities

• Design and implement complex Java microservices.
• Define and promote architectural standards, coding best practices, and security guidelines.
• Lead IAM initiatives, including Keycloak configuration and realm design, Okta federation, and OAuth2/OIDC flows.
• Drive technical discussions with stakeholders and represent the engineering team.
• Identify and resolve scalability, performance, and security challenges.
• Lead code reviews and software quality initiatives.
• Promote the adoption of tools such as SonarQube and Snyk.
• Mentor and support junior and mid-level engineers.
• Produce technical documentation, ADRs, and operational runbooks.

Skills

Java

React

Microservices

IAM

Job description

emagine is seeking a Senior Java / React Engineer to join a Unified Commerce team in Lisbon. You will contribute to design, delivery of modern, scalable digital solutions and own critical IAM initiatives while collaborating with product owners and architects.

This hands-on role blends coding, architecture, and leadership, with opportunities to promote security standards, oversee microservices, and mentor junior engineers.