Senior Full-stack Developer (.NET Core & React.js & AWS) Lisboa

Senior Full-stack Developer (. NET Core & React. js & AWS)

Join to apply for the Senior Full-stack Developer (. NET Core & React. js & AWS) role at Ingenious Lion.

This range is provided by Ingenious Lion. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Overview

Ingenious Lion is a Digital Tech Hub designed exclusively for Publicis Groupe, one of the world’s leading marketing agencies. As the marketing industry continues to drive digital transformation, Publicis Groupe empowers its clients with innovative data solutions and media ecosystems. Ingenious Lion has one mission: to partner with Publicis’ global teams in creating innovative data and digital tech products that will shape the future and delight Publicis Groupe clients. We cultivate a thriving company culture focused on growth, challenge, excellence, and recognition for valuable contributions.

If you’re curious to learn more about us, here are four things you should know:

• Our company culture is anchored in five values: Joy, Honesty, Connectivity, Own Challenger, and Greater World. Do these values resonate with you?
• We are committed to diversity and inclusion because we believe our unique differences make us stronger.
• We encourage open communication and create an environment where everyone’s voice is heard and every contribution is valued.
• We’re committed to quality and continuous learning; when we hit a roadblock, we work to create solutions.

In one sentence, we are a group of people with an unusual aptitude for generating great ideas and infusing them with positive energy and good fun.

A Sneak Peek at Your Future Role

As a Senior Full-Stack Developer, your mission is to design, build, and maintain modern, scalable software features across both frontend and backend domains, with a primary focus on frontend. This role emphasizes developing
- impact features such as integration with
- party authorization services, advanced permission assignment, and secure user access models on a unified platform.

You’ll take ownership of technical solutions, from UI components to backend systems, and contribute to shared libraries and coding standards. You’ll participate in technical design discussions, peer reviews, and promote clean code principles, solid architecture, and reliable delivery.

Responsibilities

• Create, design, develop, and maintain UI features and backend services that support secure, scalable user and permission management, aligned with business needs and system architecture.
• Contribute to the integration of
  - party authorization services and the implementation of advanced permission and role assignment logic.
• Support the migration of users, clients, and data permissions from legacy systems to a unified operating system, ensuring accuracy and reliability throughout the process.
• Collaborate closely with team members and stakeholders in an agile environment to deliver
  - performing web applications that optimise processes and create meaningful user value.
• Improve and maintain internal tools and shared libraries while participating in code reviews and promoting best practices across the team.

Qualifications

• At least six years of experience in frontend development with React, Vite, Type
  Script, and proficiency in Java
  Script, HTML, and CSS.
• Proficiency with backend development with. NET Core and C#, with experience with Entity Framework Core, SQL Server, Automapper, and manual mapping.
• Experience with frontend and backend testing tools such as Vitest, Cypress, XUnit, Moq, and Shouldly.
• Hands-on experience with Git and modern version control workflows.
• Working knowledge of AWS native services and
  - native development principles.
• Experience working in an agile/Scrum environment, participating in ceremonies, and iterative planning.
• Strong communication skills in English, both written and spoken.

Skills and Nice-to-Have

• Familiarity with OAuth and secure user authorization flows.
• Exposure to CI/CD pipelines, including YAML configurations, Terraform, and Azure Dev
  Ops.
• Experience with permission management systems or identity access control platforms.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Engineering and Information Technology

Industries

• IT Services and IT Consulting

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