Senior Backend Developer

Data Model & Persistence Layer

• Design and implement new domain entities including  and  to support federated identity mapping.
• Refactor existing schemas (e.g., ) to separate vehicle-level and profile-level concerns.
• Develop and execute database migrations, including:
  • Table creation, column restructuring, and foreign key repointing
  • Index updates and performance optimizations
• Implement data backfill and reconciliation logic for existing records, including consolidation of vehicle and profile relationships.

API & Middleware Development

• Refactor REST APIs to support:
  • Account-level, vehicle-level, and profile-level operations
  • Updated relationships between entities (account to vehicles to profiles)
• Implement cross-cutting concerns:
  • Request interceptors/filters for authentication and context resolution
  • Shared request context updates (vehicleProfileId, userAccountId)
• Enhance API contracts, OpenAPI documentation, and error handling to reflect new data model and authentication patterns.

Authentication & Security Integration

• Integrate Firebase Authentication and implement
  -token validation and claim extraction.
• Transition from client-credential-based authentication (e.g., Keycloak) to federated identity model.
• Implement account-ownership authorization to enforce access control across account, vehicle, and profile scopes.

Service Layer & Business Logic

• Rework service logic to support:
  • Vehicle enrollment and profile creation flows
  • Signing key management and rotation
  • Payment/card binding at profile level
• Update transaction processing logic to distinguish between:
  • Profile-based signed transactions
  • Vehicle-level fallback scenarios
• Implement account-level operations such as:
  • Full account closure with cascading vehicle unenrollment and partial failure handling

Integration & External Systems

• Work with third-party integrations including:
  • Firebase (identity provider)
  • Client SRC (card tokenization and identity binding)
  • Payment middleware and BOS systems
• Ensure consistency of entity mapping across internal services and external callbacks.

Testing & Quality Engineering

• Develop and execute integration and regression test plans across:
  • Updated schema and foreign key relationships
  • API endpoints and authentication flows
• Update test teardown and data lifecycle logic to reflect new entity relationships.