Flutter Mobile Developer - Banking & Financial Services (BFS)

About the Role

This is a permanent contract (CDI) with a start date around two months. The role is for a Flutter Mobile Developer to work for a major client in the banking and financial sector.

The role requires at least 6 years of experience, with strong skills in Flutter. Knowledge of PHP/Symfony is appreciated but the primary focus is mobile development.

You'll work in a modern technical environment with Agile/Scrum, code review, automation and CI/CD. Teams value quality, collaboration, and innovation. Cognizant provides an understanding of client needs across departments, supporting technical improvements, digital transformation, regulatory projects, and process optimization.

The project is a mobile development team inside the Web & Mobile department of an online bank.

Your Responsibilities

• Participate in all project phases: study, design, development, and testing
• Work with business teams (marketing, media, customer service) and technical teams
• Develop and maintain mobile applications using Flutter (Android and iOS)
• Integrate REST APIs and collaborate with backend teams
• Write automated tests, and manage project delivery and production monitoring
• Work on corrective and evolutive maintenance
• Contribute to code reviews and support good development practices

Technical Environment

Main (Mobile)

• Flutter, Dart
• Firebase
• Mobile CI/CD (Fastlane, Bitbucket pipelines)
• Google Play Console / App Store Connect
• REST APIs

Nice to have

• PHP 8
• Symfony 6/7
• MySQL, Kafka, ElasticSearch
• Git (Jira, Bitbucket)

Required Profile

• Master’s degree in Computer Science (engineering school or university)
• At least 6 years of experience in web/mobile development, with strong experience in Flutter
• Good understanding of mobile constraints: performance, security, accessibility
• Professional English required (spoken and written). Experience in an international context is a plus

Work Environment & Methodologies

• Experience working in Agile/Scrum teams
• Knowledge of DevOps practices and automation

Soft Skills

• Strong teamwork skills and ability to collaborate with different profiles
• Ability to understand client needs and act with a consultant mindset
• Comfortable communicating with different stakeholders (technical, business, MOA/MOE)
• Autonomy, attention to detail, problem‑solving mindset

What Will Make The Difference

• Previous experience in banking/finance, especially online banking
• Curiosity, interest in good practices, and ability to bring technical ideas to the team

Work model: Hybrid

We promote a hybrid work model. The position requires 3 days per week on-site, either at the client’s location or at Cognizant La Défense. Work conditions may evolve depending on the project and business needs, but we always ensure clear and transparent communication.

We look forward to meeting candidates who are engaged and curious. Even if you do not match all criteria, feel free to apply — your transferable experience and motivation can make a real difference.