Java Developer

Your skills and qualifications:
·

8+ years of experience in

*Java (Spring Boot 3.x)**

with a focus on

enterprise-grade microservices
·

Deep expertise in

*NoSQL modeling**

(Document Versioning, Bucketing) and proficiency in

*MongoDB**

’s Aggregation Framework

· Experience with

*RESTful principles**

and managing deeply nested

JSON structures
·

Familiarity with the

*TM Forum SID**

(Shared Information Data) model and the relationship between Party and Role entities

· Familiarity with

*Kafka**

or

RabbitMQ
·

Experience with

*Ajv**

(Node) or

*Hibernate**

Validator (Java)

· Proficiency in designing Idempotency, Consistency, and Distributed Transactions within a NoSQL environment

… and we appreciate if you have:
·

Telecom domain knowledge

· Experience with Docker, Kubernetes, and Terraform

· Knowledge of

*OpenID Connect (OIDC)**

and API Gateway configuration (e.g., Kong or Apigee)

· Experience with

*Contract Testing**

(Pact) to ensure API stability across different partner versions

Responsibilities:
·

End-to-end development of TMF Party and Customer Open APIs, ensuring strict adherence to TM Forum standards

· Design and maintain a highly scalable MongoDB schema that utilizes advanced patterns (Extended Reference, Polymorphic) to handle nested partner and customer relationships

· Build a reusable "TMF-Core" framework that handles common concerns: JSON-Patch updates and standardized error handling

· Implement automated JSON Schema validation and ensure the platform achieves 100% compliance with the official TMF Conformance Test Suite (CTK)

· Architect and develop secure data access layers using OAuth2 and Scopes, ensuring that Partner data is isolated and protected against unauthorized access

· Optimize complex MongoDB aggregation pipelines and indexing strategies to maintain sub-100ms response times for large-scale partner lookups

· Design and develop event-driven logic (Webhooks/Kafka) to synchronize state changes between Party, Role, and Customer domains

· Conduct architectural code reviews, define the backend tech stack, and create technical documentation/Blueprints for consumer teams

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