Senior Mobile Application Engineer

We are looking for a Senior Mobile App Engineer to lead the development and integration of a large-scale Fan-e platform
. This is a hands‑on, senior technical role focused on building robust, secure, and scalable mobile integration layers using Flutter and Dart
.

The platform integrates with multiple backend systems and third‑party services including ticketing engines, identity providers, payments, travel services, and real‑time event systems. This role is not limited to UI development — it is deeply integration‑focused
, involving architecture design, API integrations, security flows, performance, testing, and CI/CD.

You will be working in an enterprise, high‑traffic, event‑driven environment where reliability, performance, and security are critical.

• Lead mobile app development and integration for the Fan‑ using Flutter (Dart).
• Define and implement mobile integration architecture layers aligned with technical and enterprise standards.
• Design, develop, and maintain scalable, modular, and testable Flutter applications
  .
• Ensure clean architecture, maintainable codebases, and best practices across the mobile stack.

Integrate the mobile application with multiple backend systems and external platforms, including but not limited to:

• CRM and CMS platforms
• Identity and Access Management (IAM) providers
• Travel services and partner systems
• Real‑time event and notification services

You will be expected to handle complex integration logic
, edge cases, retries, failures, and graceful degradation.

• Implement and manage secure authentication and authorization flows
  , including:
• OAuth2
• JWT
• Single Sign‑On (SSO)
• Ensure secure handling of sensitive user data, tokens, and session management.
• Validate authorization flows across mobile and backend systems.
• Design, test, and validate critical user journeys
  , including:
• Payments
• Ticket issuance and validation
• Identity verification
• Real‑time event interactions
• Ensure reliability and accuracy in high‑traffic, high‑risk scenarios
  .

• Conduct integration‑focused testing
  , including:
• Mobile API integration tests
• Schema validation
• Security and authorization flow testing
• Failure and edge‑case scenarios
• Build and maintain automated test suites for mobile applications.
• Integrate automated tests into CI/CD pipelines
  .

• Flutter Test
• Jest
• Appium
• Postman / Newman
• Firebase Test Lab
• k6 (API & integration performance testing)

• Implement offline‑first and cache‑driven patterns where required.
• Optimize app performance for large‑scale usage and peak traffic periods.
• Ensure smooth user experience under varying network conditions.

• Work closely with backend, Dev Ops, and platform teams.
• Integrate mobile apps with cloud‑hosted backends
  , including:
• AWS
• GCP
• Support event‑driven and microservices‑based architectures from a mobile perspective.

• Strong hands‑on experience with Flutter and Dart in real production environments
  .
• Proven experience delivering complex mobile integrations with third‑party systems.
• Solid understanding of mobile architecture patterns
  , scalability, and maintainability.
• Strong experience with API integration
  , RESTful services, and event‑driven systems.
• Deep understanding of authentication and authorization mechanisms (OAuth2, JWT, SSO).
• Experience working with CI/CD pipelines and automated testing frameworks.
• Familiarity with cloud‑hosted backend platforms (AWS, Azure, or GCP).
• Experience working on large‑scale, high‑traffic mobile platforms
  .
• Experience with event‑driven and microservices architectures
  , especially from a mobile perspective.
• Strong understanding of performance, reliability, and security in enterprise mobile applications.

• Strong problem‑solving and analytical skills.
• Ability to work independently and take ownership of complex technical areas.
• Clear communication skills — able to explain technical concepts to both technical and non‑technical stakeholders.
• Comfortable working in fast‑paced, deadline‑driven environments (especially event‑based platforms).
• Contract Duration: 1 year
• Start Date: ASAP
• End Date: 1 March 2027
• Engagement Type: Contractual

• Seniority level: Mid‑Senior level
• Employment type: Contract
• Job function: Information Technology
• Industries: Staffing and Recruiting and Software Development