Chief Architect

• Led architecture and development (Go) of system-wide API for managing private cloud product, REST for public API and gRPC for backend micro-services.
• Led re-architecting and development (Go) of virtual machine snapshotting over Ceph RBD images and S3.
• Refactor (C, Python, Go) of a propriery SMB stack to provide Highly-Available Windows file sharing over Ceph.

Director

• Led integration of StackIQ intellectual property into Teradata mainline database and machine learning products.
• Enabled customer support teams to remotely re-provision database systems in the field.
• Containerized Stacki using Docker for easier development.
• Managed a software architects group, and Kubernetes team (mix of Go developers and SREs).

Co-founder / Chief Technical Officer

• Partnered with Amazon to provide AWS Marketplace tools to build linux clusters inside of EC2.
• Architected and developed (Python) closed-source extensions to Rocks for InfiniBand, GPU, Hadoop, virtualization, and database workloads.
• Sold into Enterprise accounts, with largest users running 3000+ nodes.
• Open-sourced extensions as Stacki.

Group Lead, Cluster Development

• Managed software team while functioning as a lead developer and architect.
• Developed (Python, C++) cluster solutions for tile-display visualization clusters, and grids of clusters.
• Grew Rocks open-source community from few hundred to several thousand (with 10k+ clusters world-wide, and multiple Top500 systems).
• Co-Principal Investigator on multiple National Science Foundation (NSF) grants, co-authored a dozen peer-reviewed papers on cluster technology.
• Managed Linux clusters for research users.

Programmer/Analyst III

• Developed (Python, C) and architected software for building and managing Linux High Performance Computing (HPC) commodity clusters.
• Open-sourced software as the Rocks Cluster Toolkit.

Programmer/Analyst III

• Developed (C, C++) a lock-free shared memory transport for MPI with custom firmware for Myrinet network cards.
• Supported research users at the National Center for Supercomputing Applications (NCSA).
• Managed Windows NT clusters for research group.

Systems Programmer, Principal

• Developed (C, C++) networking protocols (IPv6, IPSec) and video drivers for embedded and user-space operating systems (Scout, x-kernel).
• Ported user-space networking stack into the Linux kernel.
• Managed software releases, user support, and prepared grant reports.

Software Engineer

• Embedded (Z80, 80186) development (C, C++, ASM) for lightning detecting weather sensors.
• Integrated first generation GPS units into sensors for high resolution time keeping.
• Ported analysis software from SunOS (BSD) to Solaris (SysV).