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

This is Us

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.

What makes us successful? Two key ingredients: we seek the good and the best, meaning we cultivate a thriving company culture. We’re all about creating an environment where people don’t just work; they grow, challenge themselves, strive for excellence, and are recognized for their incredible value to the team.

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

• Our company culture is anchored in five powerful 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.
• Finally, we’re somewhat “obsessed” with quality. We believe in continuous learning and knowledge sharing; when we hit a roadblock, we don’t just complain—we create solutions to overcome it.

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

Feeling Ingenious already?

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 focuses on developing high-impact features such as integration with third-party authorization services, advanced permission assignment, and secure user access models, all on a more flexible and 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 also participate in technical design discussions, peer reviews, and promote clean code principles, solid architecture, and reliable delivery.

Here Are the Key Tasks You'll Be Working on Every Day

• 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 third-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 high-performing web applications that optimise processes and create meaningful user value.
• Improve and maintain internal tools, shared libraries while participating in code reviews and promoting best practices across the team.

We're Thrilled to Have You Consider Joining Our Team. Here Are the Qualifications We're Seeking

• At least six years of experience in frontend development with React, Vite, TypeScript, and proficiency in JavaScript, 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.
• Working knowledge of AWS native services and cloud-native development principles.
• Hands-on experience with Git and modern version control workflows.
• Strong communication skills in English, both written and spoken.

Skills That Would Make You Shine Even Brighter!

• You are familiar with OAuth and secure user authorization flows.
• You have exposure to CI/CD pipelines, including YAML configurations, Terraform, and Azure DevOps.
• You have previous involvement in permission management systems or identity access control platforms.