Solution Architect Java

3 weeks ago

Lahore, Punjab, Pakistan Abacus Global Full time

We are seeking a highly skilled and experienced Senior Java Developer with deep expertise in designing and implementing robust integration solutions for the telecommunications and fintech sectors. The ideal candidate will have a strong command of modern Java-based development, API architecture, and security protocols, along with a solid understanding of industry-specific standards such as TM Forum Open APIs and Open Banking frameworks.

Key Responsibilities:

Design, develop, and maintain scalable backend systems and

microservices using

  • Design, develop, and maintain scalable backend systems and

    microservices using Java (Spring Boot, Jakarta EE) .
  • Build and expose RESTful APIs aligned with TM Forum Open APIs (TMF), CAMARA standards , and Open Banking specifications (UK/PSD2) .
  • Lead the development of API gateway policies (throttling, caching, quota) using platforms such as Apigee, Kong, or MuleSoft .
Security & Identity Integration

Implement secure authentication and authorization flows using OAuth

  • Implement secure authentication and authorization flows using OAuth

    2.0 , OpenID Connect , and integrate with IdPs like Okta , Azure AD , or

Ping Identity.

  • Ensure APIs are compliant with Consent Management and data privacy mandates .
  • Build and integrate Java modules for OSS/BSS systems , SIM lifecycle management, provisioning, and partner APIs in telco ecosystems.
  • Develop interfaces for banking platforms including KYC/AML workflows , account aggregation (AIS) , and payment initiation (PIS) .
  • Translate regulatory requirements (e.g., PSD2, GDPR ) into compliant technical implementations.

Design cloud-native or hybrid Java-based solutions in multi-

  • Work with event-driven architectures , message queues (Kafka, RabbitMQ), and integration platforms (iPaaS).
  • Collaborate with architects and DevOps teams to ensure CI/CD, scalability, and fault tolerance.
Deliver high-quality technical documentation, solution blueprints, and developer guides.

Present solutions to technical and non-technical stakeholders,

participating in sprint planning and reviews.

  • Present solutions to technical and non-technical stakeholders,

    participating in sprint planning and reviews.
Key Requirements:
  • 8-10 years minimum hands-on Java development experience in large-scale integration projects.
  • Proficient in Spring Boot , REST API development , and API gateway patterns.
  • Proven industry experience in telecom (OSS/BSS) and/or fintech/banking integration .
  • Hands-on experience with OAuth2, OpenID Connect , and API security frameworks .
  • Familiarity with compliance requirements like GDPR , PCI-DSS , PSR , and regional data protection laws.
  • Experience with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes).

Strong communication and documentation skills.

Required Skills:

KYC REST FinTech Initiation Compliance Collaboration CI/CD RabbitMQ Technical Documentation Authorization Authentication Interfaces Protection Sprint Planning Azure Architects Regulatory Requirements Telecommunications Scalability AWS Microservices Reviews Spring Boot DevOps Architecture Kubernetes Banking Specifications Integration Docker Security Documentation Java Planning Design Engineering Communication Management

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