Hi, I’m
T V Bhaskar Sastry
Senior Development Engineer
Bengaluru,KA
Summary
Dynamic Cloud-Native and Telecom Engineer specializing in containerization, Kubernetes/Helm orchestration, and 5G core security. Proven expertise in Docker multi-stage builds and Helm chart architecture, complemented by a robust security background with an M.Tech from TIFAC-CORE Cyber Security at Amrita University. Hands-on experience in vulnerability remediation and a comprehensive understanding of the architectural nuances of cloud-native systems. Committed to leveraging technical skills to drive innovation and enhance security within complex environments.
Overview
7
years of professional experience
7
Certifications
1
Language
Work History
Nokia
L3 Support Engineer - Customer Engineering Team
Job overview
- Production Support & Customer Excellence: - Provided L3 production support for HLR and UDM deployments across global customers - Supported top-tier Nokia customers including Verizon, T-Mobile, and other major carriers - Performed root cause analysis with detailed RCA documentation - Developed automated diagnostic scripts for faster issue identification - 24x7 on-call support for critical incidents - Conducted customer training on operations and troubleshooting - Received Customer Excellence Award 2022 for outstanding support delivery
Nokia
Cloud-Native Engineer - 5G UDM Platform
01.2022 - Current
Job overview
- Containerization & Helm Leadership: - Led containerization initiative for UDM microservices across entire platform - Architected multi-stage Docker builds with significant image size optimization - Designed and developed comprehensive Helm chart ecosystem with dependency management - Implemented security best practices: non-root users, distroless base images, minimal attack surface - Created production, staging, and development deployment profiles - Developed Helm hooks for lifecycle management and YANG-based configuration
- Kubernetes Deployment & Operations: - Deployed and managed UDM platform on Kubernetes clusters - Configured StatefulSets, Services, ConfigMaps, Secrets, RBAC, and Network Policies - Implemented resource management and autoscaling.
- Envoy xDS Control Plane Development: - Developed Envoy Discovery Service (xDS) control plane in Go for dynamic configuration management - Implemented xDS APIs: CDS, EDS, LDS, ADS - Built gRPC server handling dynamic configuration updates to Envoy proxies - Integrated Redis cluster discovery with TLS support - Implemented versioned configuration snapshots and Kubernetes service discovery
- Security Engineering & Testing: - Performed comprehensive security testing using SAST (SonarQube), DAST (ASAN, Valgrind).
- 5G UDM Platform Development: - Contributed to 5G Service-Based Architecture (SBA) network functions development - Worked across multiple network functions including subscriber management, authentication, event exposure, and service discovery - C++ development for common libraries and utility functions - gRPC interface implementations and LDAP integration - Integration testing, debugging, and code reviews
Nokia
Software Engineer Intern / Junior Engineer
01.2019 - 01.2020
Job overview
- Started as intern during M.Tech, converted to full-time
- Worked on legacy system maintenance and migration preparation
- Bug fixes and regression testing.
Education
Amrita Vishwa VidyapeethamCoimbatore
M.Tech from Network Security, Cloud Security, Security Architecture
01-2020
University Overview
TIFAC-CORE Cyber Security
SCSVMV UniversityKanchipuram
B.Tech from Computer Science and Engineering
01-2018
Skills
Programming: C (Advanced), Go (Intermediate), Shell/Bash (Basics), Python (Basics)
Cloud-Native & DevOps: Docker, Kubernetes, Helm, Envoy, Service Mesh, xDS Control Plane, Jenkins, GitLab CI
Proficient in security tools
5G architecture expertise (UDM, AUSF, EES, SDM)
Experienced with Make, CMake, and Git
Certification
Certified Ethical Hacker (CEH) | EC-Council | 2019 (Credential ID: ECC#14350672)
AWARDS & RECOGNITION
Nokia Excellence Awards (12+ awards received): - Cheer Excellence Awards (2024, 2025) - Appreciate Excellence Awards (Multiple: 2021-2024) - Praise Excellence Award (2023) - Best Team of the Year (2 awards received), Customer Excellence Award 2021 | Nokia Customer Engineering Team Recognized for outstanding L3 support delivery and customer satisfaction across global deployments
ARCHITECTURE & DESIGN KNOWLEDGE
- Cloud-Native Architecture: Microservices patterns, Container orchestration
- Security Architecture: Zero-trust model, defense-in-depth strategies, secure by design principles, threat modeling
- Service Mesh: Control plane vs. data plane separation, dynamic configuration (xDS), traffic management
- 5G Core: Service-Based Architecture (SBA), network function interactions, HTTP/2 communication
ADDITIONAL INFORMATION
- Availability: [Notice period – 2 Months]
- Relocation: [Yes]
Timeline
Cloud-Native Engineer - 5G UDM Platform
Nokia
01.2022 - Current
Software Engineer Intern / Junior Engineer
Nokia
01.2019 - 01.2020
L3 Support Engineer - Customer Engineering Team
Nokia
SCSVMV University
B.Tech from Computer Science and Engineering
Amrita Vishwa Vidyapeetham
M.Tech from Network Security, Cloud Security, Security Architecture