Job Summary
We are seeking a Senior Backend Developer to design implement and refactor core platform services supporting federated authentication and a multi-entity vehicle management system. This role focuses on integrating Firebase-based identity restructuring backend data models and modernizing API layers to support scalable account vehicle and profile relationships.
Responsibilities
- Data Model & Persistence Layer
- Design and implement new domain entities including user_account and vehicle_profile to support federated identity mapping.
- Refactor existing schemas (e.g.vehicle_enrollment) 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-vehicles-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 ID-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
- Work with third-party integrations including:
- Firebase (identity provider)
- MasterCard 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.
- Strong experience in backend development (Java/Spring Boot or similar frameworks)
- Proven expertise in:
- REST API design and refactoring
- Relational database design schema migrations and indexing
- Authentication/authorization frameworks (JWT OAuth federated identity)
- Experience implementing middleware components such as interceptors filters and request contexts
- Familiarity with cloud-based identity providers (e.g. Firebase Auth OAuth providers)
- Experience with payment systems and tokenization (e.g. MasterCard SRC or similar)
- Prior work on multi-tenant or hierarchical data models (account-asset-profile)
- Knowledge of event-driven integrations and callback-based third-party systems
- Experience with API gateways and distributed security validation patterns
- Strong system design and data modeling skills
- Ability to manage complex refactoring across multiple layers (DB API service)
- Attention to data integrity security and backward compatibility
- Effective collaboration across architecture QA and integration teams
- End-to-end ownership of a major platform refactor spanning:
- Data model redesign
- Authentication transformation
- API and service re-architecture
- Direct impact on enabling scalable multi-vehicle multi-profile user experiences
- Critical role in aligning platform architecture with federated identity standards and payment constraints
Certifications Required
not required
About Cognizant’s IoT Practice:
Intelligent, IoT-enabled products will soon result in the proliferation of data and disrupt virtually all industries. To be successful, both large and small companies must leverage IoT capabilities by designing modern products that fundamentally connect people with processes. Within Cognizant IOT, we engineer industry-aligned, IoT-enabled products that merge industry needs with human drivers. Our intelligent products will revolutionize experiences and result in exciting, transformative outcomes. Without human-centered thinking, connected products are just standalone things—but with it, our modern connected products facilitate a unified way of life enjoyed by all.
*Please note, this role is not able to offer visa transfer or sponsorship now or in the future*
- Applications will be accepted until July 31st , 2026
- LI#- #LI-SC6
Compensation & Benefits
$133,000 – $180,000 per year
- Bonus + Comprehensive Benefits
Additional Information
- Onsite role
- ⚠️ Visa sponsorship is not available now or in the future. Candidates requiring sponsorship will not be considered.
Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:
• Medical/Dental/Vision/Life Insurance
• Paid holidays plus Paid Time Off
• 401(k) plan and contributions
• Long-term/Short-term Disability
• Paid Parental Leave
• Employee Stock Purchase Plan
Over Cognizant
Cognizant (NASDAQ: CTSH) is een bouwer van AI-oplossingen en een leverancier van technologiediensten. Wij slaan de brug tussen AI-investeringen en ondernemingswaarde door het bouwen van full-stack AI-oplossingen voor onze klanten. Onze diepgaande kennis van sectoren, processen en engineering stelt ons in staat om de unieke context van een organisatie te verankeren in technologische systemen. Deze systemen versterken het menselijk potentieel, realiseren tastbare resultaten en geven wereldwijde ondernemingen een voorsprong in een snel veranderende wereld. Ontdek hoe op cognizant.ai of @cognizant.
Aanvullende arbeidsinformatie
De informatie over de beloning is correct op de datum van deze vacature. Cognizant behoudt zich het recht voor om deze informatie op elk moment te wijzigen, met inachtneming van de toepasselijke wetgeving.
Van sollicitanten kan worden verwacht dat zij gesprekken bijwonen, persoonlijk of via een videogesprek. Daarnaast kan van kandidaten worden gevraagd om tijdens elk gesprek een geldig, door de overheid uitgegeven identiteitsbewijs (zoals een identiteitskaart of paspoort) te tonen.
Cognizant is een werkgever die gelijke kansen biedt. Je sollicitatie en kandidatuur worden niet beoordeeld op basis van ras, huidskleur, geslacht, religie, levensovertuiging, seksuele geaardheid, genderidentiteit, nationale afkomst, handicap, genetische informatie, zwangerschap, veteranenstatus of enige andere eigenschap die wordt beschermd door federale, regionale of lokale wetgeving.
