Telecom OSS Modernization Architect

Job Title: Telecom OSS (Operations Support Systems) Modernization Architect – Legacy Mainframe to Cloud-Native Specialist 

Location: N.J - Atlanta or Remote 

Client Industry: (Not specified in your input) 

Rate: Max DOE 

Required Expertise (Priority): 

• Expertise on Telcordia/Ericsson legacy applications: TIRKS, SOAC, LFACS, etc. 

• They are mainly mainframe architects. 

Required Skills: 

• Legacy Decoupling: Proven track record of decomposing IBM mainframe systems (z/OS, IMS DB/DC, DB2) using patterns like the Strangler Fig pattern. 

• Cloud & Containerization: Expert-level mastery of Kubernetes, Docker, and enterprise cloud architecture patterns. 

• API & Service Mesh: Extensive experience with API gateways, service mesh (Istio/Linkerd), and schema protocols (OpenAPI/Swagger). 

• Modern Development: Proficiency in Java (Spring Boot), Go, or Python for building highly resilient, distributed microservices. 

• Data Pipelines: Experience with real-time data streaming (Kafka, Flink) and modern distributed databases (PostgreSQL, MongoDB). 

• Education: Bachelor’s or Master’s degree in Telecommunications, Computer Science, or Network Engineering. 

Core Responsibilities: 

• Architecture Transformation: Define end-to-end functional architecture to transition legacy, monolithic TIRKS mainframe systems (z/OS, IMS, DB2) into modern midrange, cloud, or service-based platforms. 

• Monolith Decomposition: Deconstruct legacy TIRKS PL/I or COBOL business logic, IMS databases, and JCL paths into modern, decoupled microservices. 

• API-First Design: Architect and enforce the implementation of high-performance RESTful or gRPC APIs to expose circuit design, inventory, and provisioning capabilities. 

• Domain-Driven Design (DDD): Translate historical TIRKS concepts like Connecting Facility Assignments (CFAs), circuit IDs, and trunk layouts into modern domain models. 

• Cloud-Native Migration: Direct the containerization (Kubernetes) and migration of core functionality into cloud environments (AWS, Azure, or Google Cloud Platform). 

• Event-Driven Integration: Replace legacy batch jobs and CICS transactions with real-time, event-driven pipelines using Apache Kafka. 

• Dual-Run Strategy: Implement data-sync strategies (like Change Data Capture) to run TIRKS and new cloud services in parallel during transition phases. 

KEYWORDS: TIRKS, SOAC, LFACS, Telcordia, Ericsson, mainframe architect, z/OS, IMS DB/DC, DB2, Strangler Fig pattern, Kubernetes, Docker, AWS, Azure, Google Cloud Platform, API gateway, service mesh, Istio, Linkerd, OpenAPI, Swagger, Java Spring Boot, Go, Python, microservices, Kafka, Flink, PostgreSQL, MongoDB, PL/I, COBOL, JCL, CICS, RESTful APIs, gRPC, Domain-Driven Design, DDD, Connecting Facility Assignments, CFA, circuit ID, trunk layout, event-driven architecture, Change Data Capture, dual-run strategy, OSS modernization, telecom operations support systems.