Mainframe Architect 1 – Telecom Billing, Customer Care

CSG

. Define application and system architecture for telecom Customer Care and Billing platforms .

Posted 11/5/2026full-timeIndiaSeniorLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in Mainframe Development, particularly with IBM z/OS and technologies such as HLASM, COBOL, CICS, and DB2. Proven ability to architect and modernize telecom Customer Care and Billing platforms while ensuring compliance with operational standards and performance optimization.

Highest-signal resume keywords

Mainframe Development ExperienceArchitecture LeadershipTelecom Billing ExpertiseHigh-Level Assembler ProficiencyPerformance Optimization

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

IBM z/OSHLASMCOBOLCICSDB2Batch ProcessingPerformance TuningAPI IntegrationDisaster Recovery StrategiesTechnical Debt Reduction

Soft Skills

MentoringStakeholder ManagementCross-Functional Leadership

Tools & Technologies

JCLIMSVSAMTSO/ISPFREXXCA7IWS Scheduling

Industry Keywords

TelecomCustomer CareBillingSubscriber ManagementOrder ManagementService ProvisioningRisk AssessmentCapacity Planning

Tech Stack

Tools & technologies

Cloud

About the role

Key responsibilities & impact

Define application and system architecture for telecom Customer Care and Billing platforms
Design end-to-end solutions across Customer, Subscriber, Product, Service, Equipment, Order, Billing, and Payment domains
Lead architectural reviews and ensure alignment with enterprise architecture standards
Create high-level and detailed solution designs for complex business initiatives
Provide subject matter expertise in IBM z/OS and Mainframe technologies
Design and review HLASM, COBOL, CICS, and DB2 solutions
Guide development teams on architecture patterns, coding standards, and best practices
Mentor senior developers and technical leads
Design large-scale batch processing solutions handling high transaction volumes
Architect online customer care and order management applications
Ensure optimal performance of CICS online transactions and batch workloads
Lead performance tuning initiatives for CPU, Memory, I/O, and Database utilization
Architect solutions supporting customer management, subscriber management, order capture and fulfilment, product catalog management, service provisioning, rating and charging, billing and invoicing, payments and collections, equipment management, and customer care operations
Partner with business stakeholders to translate telecom requirements into technical solutions
Drive Mainframe modernization initiatives
Architect API-based integrations between Mainframe and distributed/cloud platforms
Evaluate emerging technologies and define future-state architecture
Lead root cause analysis for critical incidents
Define resiliency, recovery, and disaster recovery strategies
Govern technical debt reduction and platform sustainability
Ensure compliance with security, audit, and operational standards

Requirements

What you’ll need

15+ years of Mainframe Development experience
8+ years working with High-Level Assembler
5+ years in Architecture or Technical Leadership roles
Extensive Telecom Billing and Customer Care domain experience
Experience supporting large subscriber bases and mission-critical production systems
Experience modernizing legacy telecom platforms and integrating with digital ecosystems
Expertise in IBM z/OS and Mainframe technologies
Experience with High-Level Assembler (HLASM), COBOL, CICS, DB2, JCL, IMS, VSAM, TSO/ISPF, REXX, batch processing, and CA7 / IWS Scheduling
Experience with high volume batch processing, file processing architecture, performance optimization, and billing cycle processing
Experience with CICS transaction processing, real-time customer care applications, order entry systems, inquiry and maintenance systems, customer service platforms, and account management
Knowledge of enterprise architecture, solution architecture, stakeholder management, technical roadmap planning, vendor management, risk assessment, capacity planning, team mentoring, and cross-functional leadership

Benefits

Comp & perks

Disability accommodations throughout the application, interview, and testing processes
Employment opportunities with CSG
Opportunities to mentor senior developers and technical leads
Cross-functional leadership and professional involvement