Tibco is looking for a Principal Software Engineer to join the CVAD (Citrix Virtual Apps and Desktops) team. In this role, you will focus on developing Citrix-Managed Cloud Services, tackling high-stakes challenges within Provisioning Services (PVS). You will build deep expertise across major platforms like Azure, GCP, AWS, VMware, and XenServer while driving low-level systems engineering.

What You'll Do

Design and maintain low-level streaming drivers, including custom networking and storage stacks.
Expertly manage the Windows boot process by implementing custom miniport drivers that provide the system boot disk at the earliest stages of OS initialization.
Utilize deep expertise in NDIS and STORPORT to architect high-performance data paths that bridge network communication with disk I/O.
Develop and support UEFI firmware applications based on industry standards (e.g., Tiano Core/EDK II) to manage pre-boot execution and hardware handoffs.
Architect and troubleshoot end-to-end network boot pipelines using PXE, TFTP, DHCP, and DNS to facilitate bare-metal and virtual machine provisioning.
Own the development of VHD/VHDX stack implementations, ensuring compatibility and high performance across both user-mode applications and kernel-mode operations.
Engineer sophisticated 'write cache' solutions using VHDX differencing disks. Design and maintain storage filter drivers (Upper Filters for STORPORT) to optimize I/O redirection for non-persistent environments.
Lead the development of system utilities for configuring local boot media (ISOs, local disk partitions) and maintaining the underlying C++ SDKs and PowerShell libraries.

What We're Looking For

12–15 years of expertise in C/C++ systems programming (or 8 years with a Master’s or 5 years with a PhD).
Expert-level C and C++ skills with a focus on resource-constrained environments, memory safety, and high-performance optimization.
Proven track record of developing and maintaining drivers or core operating system components within complex kernel frameworks.
Practical experience with UEFI/BIOS environments and developing pre-boot applications that facilitate the handoff between hardware and the OS.
Experience leading technical initiatives within mature, large-scale agile development environments.
Understanding trusted execution environments, secure boot sequences, and cryptographic code-signing standards.
Demonstrated ability to translate highly technical low-level constraints into clear requirements for product stakeholders and cross-functional teams.

Nice to Have

Extensive experience architecting and debugging data paths for network and storage I/O, including miniport and filter driver logic.
Proficiency with low-level debuggers to diagnose kernel-mode crashes, race conditions, and system-level performance bottlenecks.
Deep understanding of system execution flows, interrupt handling, memory management, and I/O request lifecycles.
Comprehensive knowledge of pre-boot networking infrastructure and automated provisioning protocols.
Technical understanding of virtualized storage formats, including the management of snapshots, differencing disks, and metadata structures.
Ability to architect solutions that integrate seamlessly across user-mode applications, system libraries, and kernel-mode services.

Technical Stack

C/C++, Windows Kernel, NDIS, STORPORT, UEFI/BIOS, Tiano Core/EDK II, PXE, TFTP, DHCP, DNS, VHD/VHDX, PowerShell, Azure, GCP, AWS, VMware, XenServer

Team & Environment

You will be part of the CVAD (Citrix Virtual Apps and Desktops) team, described as a unique blend of structured vision and startup-like innovation.

Benefits & Compensation

Healthcare
Life insurance
Disability benefits
401(k) plan and company match
Compensation: NY generally ranges: $169,832-$254,748. CA generally ranges: $177,216-$265,824. All other locations fall under General State range: $147,680-$221,520.

Tibco empowers enterprises to enable secure hybrid and remote working from anywhere, using any device. We value passion for technology and the courage to take risks. Everyone is empowered to learn, dream, and build the future of work.