Linux VPN/ZTNA Client Developer Job at Hewlett Packard Enterprise (Bangalore)

Job Description

This role has been designed as ‘’Onsite’ with an expectation that you will primarily work from an HPE office. Who We Are: Hewlett Packard Enterprise is the global edge-to-cloud company advancing the way people live and work. We help companies connect, protect, analyze, and act on their data and applications wherever they live, from edge to cloud, so they can turn insights into outcomes at the speed required to thrive in today’s complex world. Our culture thrives on finding new and better ways to accelerate what’s next. We know varied backgrounds are valued and succeed here. We have the flexibility to manage our work and personal needs. We make bold moves, together, and are a force for good. If you are looking to stretch and grow your career our culture will embrace you. Open up opportunities with HPE.

Job Responsibility

Design and develop high-performance VPN/ZTNA client applications for Linux desktop and server environments, focusing on security, performance, and seamless integration with Linux networking stack
Implement core client-side networking functionalities including secure tunnel establishment, encryption negotiation, certificate management, and Zero Trust Network Access (ZTNA) enforcement
Develop and maintain robust VPN client code in C++ or Golang that efficiently manages network connectivity, tunneling protocols (IPsec, WireGuard, TLS), and secure access policies
Integrate with Linux network management subsystems including NetworkManager, systemd-networkd, netlink API, iptables/nftables, and kernel-level networking stack for transparent traffic management
Optimize system resource usage (CPU, memory, network bandwidth) to ensure lightweight, efficient client operation across diverse Linux distributions and hardware platforms
Implement secure credential and certificate management, including integration with Linux security subsystems (systemd-keyring, TPM, keyring API)
Develop and maintain diagnostic and troubleshooting capabilities, including logging, telemetry, and network packet analysis for issue resolution
Collaborate with cross-functional teams (security, QA, product management) to design features that align with enterprise VPN/ZTNA architectural requirements and security standards
Write comprehensive unit, integration, and end-to-end tests for VPN/ZTNA functionality across multiple Linux distributions and configurations
Troubleshoot and resolve complex issues related to network connectivity, protocol interoperability, latency, DNS resolution, traffic routing, and security on Linux systems
Stay current with Linux kernel networking developments, VPN protocols, cryptographic standards, and Zero Trust security models

Requirements

Bachelor's degree in Computer Science, Information Systems, Computer Engineering, or equivalent professional experience
2-5 years of professional experience in Linux systems development, network programming, or systems-level software development
Advanced proficiency in C++ or Golang with demonstrated experience building performance-critical, production-grade networking applications
Deep understanding of Linux kernel networking (netlink, TCP/IP stack, socket programming at system call level)
Comprehensive knowledge of Linux network management and configuration (NetworkManager, systemd-networkd, network namespaces, routing tables, firewall rules)
Hands-on experience with VPN technologies and protocols (IPsec, WireGuard, OpenVPN, TLS/SSL, or similar) with proven track record implementing VPN client functionality
Hands-on experience with Zero Trust Network Access (ZTNA) concepts, implementation, or related secure access solutions
Strong expertise in cryptography fundamentals, encryption algorithms, PKI, X.509 certificates, and secure tunnel protocols
Proficiency with Linux runtime components: NetworkManager, systemd, d-bus, network managers, and kernel module interaction
Experience with Linux security subsystems (AppArmor, SELinux, keyring, TPM) and secure credential management
Solid understanding of network protocols (TCP/IP, UDP, DNS, HTTP/HTTPS, ICMP) and low-level networking concepts
Experience debugging complex networking issues using tools like tcpdump, Wireshark, strace, netstat, ss
Proficiency with version control systems (Git) and CI/CD pipelines
Comfortable working with multiple Linux distributions (Ubuntu, RHEL, Debian, Alpine, etc.)

Nice to have

Experience developing VPN clients or secure access solutions (commercial or open-source)
Familiarity with advanced packet processing and network monitoring on Linux
Experience with cryptographic libraries (OpenSSL, mbedTLS, libsodium, libcrypto)
Knowledge of systemd and service management on Linux systems
Contributions to open-source networking or security projects (WireGuard, OpenVPN, Cloudflare, etc.)
Understanding of enterprise networking requirements and corporate network architectures
Experience with secure software development practices and threat modeling
Familiarity with hardware security modules (HSM) or TPM integration

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