Senior Full-Stack Engineer (Java/React) – Hybrid in Lisbon

Connect Digital; Lisboa; Hybrid; EUR 70,000 - 90,000; Full time

Job summary

Connect Digital is seeking a Lead Full Stack Engineer in Lisbon to drive secure, scalable digital products. The role blends backend Java development with React frontend work, including identity integration and architectural standards within a multidisciplinary squad.

The position requires mentoring peers, influencing engineering practices, and collaborating with product stakeholders to deliver reliable solutions. This hybrid role is based in Lisbon, Portugal.

Qualifications

• 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.

Responsibilities

• Design and implement full-stack features with Java backend and React frontend.
• Integrate Okta SSO and OIDC flows across distributed apps.
• Build and maintain RESTful APIs with OpenAPI docs.
• Implement event-driven patterns using AWS SQS and Solace.
• Manage frontend dependencies with npm and secure token handling.
• Maintain high engineering standards via SonarQube and Snyk; code reviews.
• Mentor junior engineers and share knowledge within the squad.
• Participate in architectural discussions and set engineering standards.
• Collaborate with stakeholders to deliver secure, scalable solutions.

Skills

Java

Spring Boot

React.js

RESTful APIs

OpenAPI

Okta SSO

OIDC/OAuth2

AWS SQS

Solace

npm

Token storage best practices

Silent renewal flows

Tools

SonarQube

Snyk

OpenAPI

Job description

Connect Digital is seeking a Lead Full Stack Engineer in Lisbon to drive secure, scalable digital products. The role blends backend Java development with React frontend work, including identity integration and architectural standards within a multidisciplinary squad.

The position requires mentoring peers, influencing engineering practices, and collaborating with product stakeholders to deliver reliable solutions. This hybrid role is based in Lisbon, Portugal.