Solution Architect - Messaging & Core Network

Comviva; Bengaluru; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

Comviva is seeking a seasoned Solution Architect to lead telecom core network and messaging initiatives in Bengaluru. You will design SIP/USSI service flows, define iFC criteria, and architect USSD-USSI interworking across CS/IMS, ensuring 3GPP compliance and high availability.

Responsibilities include leading on-premise and cloud deployments, integrating with BSS/OSS and charging systems, and mentoring delivery teams while aligning with product roadmaps.

Qualifications

• 8–12 years of experience in telecom core network and messaging domain.
• Hands-on experience with SMSC, USSD Gateway / USSI, and SMS Firewall platforms.
• Strong understanding of telecom signaling protocols (SS7, SMPP, Diameter, SIP).
• Experience with cloud-native architectures, containerization (Docker), and orchestration (Kubernetes).
• Solid knowledge of Linux systems, networking, and database fundamentals.
• Proven experience in large-scale telecom deployments (Tier-1 or Tier-2 operators).
• Experience in HA, DR, and geo-redundancy setups.
• Ability to contribute to BoQ, solution sizing, infrastructure planning.
• Strong analytical and problem-solving skills.
• Effective communication and stakeholder management.
• Ability to lead discussions with customer architects, network teams, and CXO-level stakeholders.
• Awareness of AI governance, data privacy, and ethical considerations.

Responsibilities

• Design and validate SIP-based service flows for USSI and IMS messaging services.
• Define iFC (Initial Filter Criteria) for triggering application servers within IMS.
• Architect USSD to USSI interworking scenarios, ensuring service continuity across CS and IMS domains.
• Oversee deployment and integration with external systems (BSS/OSS, charging, mediation, analytics).
• Lead solution design and execution for on-premise and cloud-native deployments.
• Architect deployments using Linux, virtualization, Kubernetes, and containerized environments.
• Mentor engineering and delivery teams on architecture standards and troubleshooting.
• Collaborate with product teams for feature enhancements and roadmap alignment.

Skills

SIP & USSI

IMS Expertise

USSD Interworking

Cloud-Native

Kubernetes

Linux & Networking

BSS/OSS Integration

AI/ML Awareness

Education

Bachelor's degree in Telecommunications / Computer Science / Electronics

Tools

Docker

Kubernetes

LangChain

LlamaIndex

OpenAI API

Azure AI

Google Cloud AI

Job description

• Design and validate SIP-based service flows for USSI and IMS messaging services.


• Define iFC (Initial Filter Criteria) for triggering application servers within IMS.


• Architect USSD to USSI interworking scenarios, ensuring service continuity across CS and IMS domains.


• Ensure compliance with relevant 3GPP specifications for IMS and USSI services.

Key Responsibilities

Solution Architecture & Design

• IMS, SIP & USSI Expertise


• Design and validate SIP-based service flows for USSI and IMS messaging services.


• Define iFC (Initial Filter Criteria) for triggering application servers within IMS.


• Architect USSD to USSI interworking scenarios, ensuring service continuity across CS and IMS domains.


• Ensure compliance with relevant 3GPP specifications for IMS and USSI services.

IMS, SIP & USSI Expertise

• Design and validate SIP-based service flows for USSI and IMS messaging services.


• Define iFC (Initial Filter Criteria) for triggering application servers within IMS.


• Architect USSD to USSI interworking scenarios, ensuring service continuity across CS and IMS domains.


• Ensure compliance with relevant 3GPP specifications for IMS and USSI services.

Deployment & Integration

• Lead solution design and execution for on-premise and cloud-native deployments (private cloud, public cloud, hybrid models).


• Architect deployments using Linux, virtualization, Kubernetes, and containerized environments.


• Define integration with external systems such as BSS/OSS, charging systems (OCS/OFCS), mediation, and analytics platforms.


• Oversee installation, configuration, upgrades, and migrations of messaging platforms.

Protocol & Network Expertise

• Strong expertise in SMPP, SS7 (MAP/CAP), Diameter, SIP, HTTP/REST APIs.


• Define integration with BSS/OSS, OCS/OFCS, PCRF/PCF, mediation systems, and external enterprise platforms.


• Ensure seamless interoperability between legacy telecom nodes and IMS core networks.


• Expertise in SMS Firewall use cases, including A2P/P2P filtering, grey route prevention, anti-spam, and fraud control mechanisms.

Performance, Security & Optimization

• Define and validate capacity planning, performance benchmarking, and throughput optimization.


• Ensure security compliance, including firewall rules, access control, signaling security, and DDoS protection strategies.


• Conduct root cause analysis (RCA) for critical issues and provide architectural fixes.

Customer Engagement & Technical Leadership

• Act as a technical authority in customer discussions, design workshops, and solution reviews.


• Provide deployment strategy and BoQ inputs for new and existing projects.


• Mentor engineering and delivery teams on best practices, architecture standards, and troubleshooting approaches.


• Collaborate with product teams for feature enhancements and roadmap alignment based on field experience.


• Co-ordinate with support team for understanding feature parity for version upgrades.

Required Skills & Experience

Domain & Technical Expertise

• 8–12 years of experience in telecom core network and messaging domain.


• Hands-on experience with SMSC, USSD Gateway / USSI, and SMS Firewall platforms (deployment, integration, troubleshooting).


• Strong understanding of telecom signaling protocols (SS7, SMPP, Diameter, SIP).


• Experience with cloud-native architectures, containerization (Docker), and orchestration (Kubernetes).


• Solid knowledge of Linux systems, networking (IP, routing, firewalling), and database fundamentals.

Deployment & Architecture

• Proven experience in large-scale telecom deployments (Tier-1 or Tier-2 operators).


• Expertise in designing on-premise, cloud, and hybrid architectures.


• Experience in high availability, disaster recovery (DR), and geo-redundancy setups.

Commercial & Presales Alignment

• Ability to contribute to BoQ preparation, solution sizing, and infrastructure planning.


• Support presales teams with technical solutioning, proposal inputs, and customer presentations.

Soft Skills

• Strong analytical and problem-solving skills with attention to detail.


• Effective communication and stakeholder management across technical and business teams.


• Ability to lead discussions with customer architects, network teams, and CXO-level stakeholders.


• High ownership with a structured and execution-driven approach.

AI Tools & Skills

• Working knowledge of AI/ML and Generative AI (LLMs, NLP, basic ML concepts).


• Hands-on exposure to frameworks such as LangChain and LlamaIndex.


• Understanding of RAG architectures, embeddings, vector databases, and prompt engineering.


• Experience with AI APIs and integrations (e.g., OpenAI, Microsoft Azure AI, Google Cloud AI).


• Familiarity with AI use cases such as chatbots, automation, and recommendation systems.


• Awareness of AI governance, data privacy, and ethical considerations.


• Ability to map business needs to AI solutions (BA) and design scalable AI architectures (Solution Architect).

Preferred Qualifications

• Bachelor’s degree in engineering (Telecom / Electronics / Computer Science) or equivalent.


• Certifications in cloud platforms (AWS/Azure/GCP) and Kubernetes.


• Experience working with telecom product vendors or system integrators.