Job Description

Job Summary

We are seeking a highly skilled Telecom Validation Engineer with hands-on experience in Nokia Packet Core (PaCo), HLR/HSS, IMS, and cloud-native deployments on AWS. The candidate will be responsible for end-to-end validation, testing, troubleshooting, and certification of Nokia telecom network functions deployed in cloud environments, ensuring carrier-grade performance, reliability, scalability, and security.

Key Responsibilities

Telecom Network Validation

• Validate Nokia Packet Core (PaCo) network functions deployed on AWS infrastructure.
• Perform functional, regression, integration, interoperability, and system testing for HLR/HSS and IMS network elements.
• Validate subscriber provisioning, authentication, registration, mobility, and policy-related workflows.
• Execute VoLTE, VoWiFi, SIP signaling, Diameter signaling, LTE/5G Core, and subscriber management test scenarios.
• Develop and execute test plans, test cases, and automation scripts.

Cloud Validation & Performance Testing

• Validate telecom workloads running on AWS services, including EC2, EKS, VPC, ELB, Auto Scaling, IAM, and CloudWatch.
• Perform performance, scalability, resiliency, failover, and disaster recovery testing.
• Validate cloud-native deployments using containers and Kubernetes.
• Conduct benchmarking and capacity assessment for telecom applications.

Troubleshooting & Defect Analysis

• Analyze logs, traces, packet captures, and signaling messages to identify issues.
• Perform root cause analysis of validation failures and collaborate with development teams for resolution.
• Debug SIP, Diameter, HTTP/HTTPS, GTP, SCTP, and LTE/5G signaling-related issues.
• Track defects and validate fixes through the software release lifecycle.

Automation & CI/CD

• Design and maintain automated test frameworks.
• Integrate validation activities into CI/CD pipelines.
• Utilize automation tools for deployment validation and regression execution.

Documentation & Reporting

• Prepare validation reports, defect summaries, and release certification documents.
• Participate in design reviews and provide validation sign-off recommendations.
• Collaborate with cross-functional teams including development, DevOps, cloud, and customer engineering teams.

Skill Requirements

Telecom Domain

• Strong knowledge of:
• Nokia Packet Core (PaCo)
• HLR/HSS
• IMS Core
• VoLTE / VoWiFi
• LTE EPC and 5G Core Architecture
• SIP, Diameter, GTP, SCTP, DNS

Cloud Technologies

• Hands-on experience with AWS:
• EC2
• EKS/Kubernetes
• VPC
• IAM
• ELB
• Auto Scaling
• CloudWatch
• Experience validating cloud-native Network Functions (CNFs) and VNFs.

Validation & Automation

• Test planning and execution.
• Python/Shell scripting.
• Robot Framework, PyTest, or similar automation tools.
• Packet analysis using Wireshark/TShark.
• Defect management tools such as Jira.

Linux & Networking

• Strong Linux administration and troubleshooting skills.
• Understanding of TCP/IP, routing, DNS, load balancing, and network security.

Other Requirements