Vladimir Zacharov

IS5 Communications Apr 2024- Jun 2025
Software Developer Toronto, Canada
 Worked on embedded Linux router devices using C, C++, and Python, implementing inter-router
communication and tunnels.
 Interfaced with hardware peripherals via I2C and SPI to access and manage internal router parameters.
 Maintained network communication with protocols such as: SSH, HTTPS,TCP TLS to ensure secure and
reliable remote access for routers in Linux embedded system.
 Investigated security vulnerabilities with Python’s SCAPY tool to investigate GRE tunnels with and without
IPSEC protocol.
ExtentCom Apr 2023- Apr 2024
Software Developer Toronto, Canada
 Worked on FPGA mesh networking devices (nodes) used for military and civilian purposes.
 Programmed in C, C++ and Python on Linux embedded system.
 Developed a secure bootloader in U-Boot, implementing RSA-4096 digital signature verification and SHA
256 integrity checks to prevent unauthorized firmware execution.
 Designed and implemented n

Cisco Jun 2019 – May 2021
Software Developer Netanya, Israel
 Worked on the Flexible NetFlow (FNF) API to enable network visualization for switches, providing visibility
into the traffic and potential security vulnerabilities.
 Programmed in C,C++ and Python for Cisco wired switches.
 Implemented predefined records to capture HTTP/HTTPS and MAC layer headers, integrating them into FNF
pipeline to enhance L2-L7 visibility.
 Built and managed a data collector that captured live network telemetry into self-contained binary files for
analysis and Wireshark compatibility and transferred them to a destination via TCP.
Checkpoint Dec 2015 – Jun 2019
Software Developer Tel Aviv, Israel
 Developed for 61K Security machine with several Linux based machines handling security and traffic.
 Programmed in C, C++, Bash and Python on kernel and user space in Linux.
 Developed Carrier Grade NAT (L3 OSI layer) project that hides multiple IPs under a few IPs by reusing
source ports.
 Investigated core dumps and system logs and conducted remote sessions with clients to fix customer
issues in the security system.

Zesty Mar 2022 – Apr 2023
Software Developer Tel Aviv, Israel
 Developed a data migration solution across AWS and GCP, enabling migration between block storages with
minimal customer downtime.
 Implemented the core migration logic in C and Python, integrating a FUSE filesystem wrapper for
transparent data transfer.
 Built and managed a Go-based agent deployed via Docker/Kubernetes in customer environments, handling
HTTPS requests from the frontend, publishing metrics to the cloud via RabbitMQ and orchestrating
migration workflows using an SQL database.
Palo Alto Networks May 2021 – Feb 2022
Software Developer Tel Aviv, Israel
 Worked on Web application and API security (WAAS) for containers, hosts and apps for the Prisma Cloud.
 Programmed in Go, TypeScript, and Node.js, utilizing MongoDB as the database.

Freelance C++ Developer Jun 2025 – Present
 Building high-performance real-time 3D simulation in C++ using the Godot engine, OpenCL and OpenGL.
 Public page: https://store.steampowered.com/app/2694200/

Cisco Jun 2019 – May 2021
Software Developer Netanya, Israel
 Worked on the Flexible NetFlow (FNF) API to enable network visualization for switches, providing visibility
into the traffic and potential security vulnerabilities.
 Programmed in C,C++ and Python for Cisco wired switches.
 Implemented predefined records to capture HTTP/HTTPS and MAC layer headers, integrating them into FNF
pipeline to enhance L2-L7 visibility.
 Built and managed a data collector that captured live network telemetry into self-contained binary files for
analysis and Wireshark compatibility and transferred them to a destination via TCP.
Checkpoint Dec 2015 – Jun 2019
Software Developer Tel Aviv, Israel
 Developed for 61K Security machine with several Linux based machines handling security and traffic.
 Programmed in C, C++, Bash and Python on kernel and user space in Linux.
 Developed Carrier Grade NAT (L3 OSI layer) project that hides multiple IPs under a few IPs by reusing
source ports.
 Investigated core dumps and system logs and conducted remote sessions with clients to fix customer
issues in the security system.