Senior Staff Network Software Engineer

Kaseya; Toronto; On-site; CAD 150,000 - 210,000; Full time

Job summary

Kaseya is seeking a Sr. Staff Network Software Engineer to architect and develop scalable, multi-tenant cloud-native networking and security solutions.

This hands-on role blends design, coding, and technical leadership for production systems. The ideal candidate has deep NGFW, Zero Trust, and SASE experience, plus hands-on Go and PHP development, data plane engineering, and cloud automation across public and private clouds.

Qualifications

• 10+ years in software engineering with 7+ years backend focus.
• 3+ years in Staff/Architect roles with end-to-end ownership.
• 5+ years in Go and PHP development.
• 3+ years with cloud-native NGFWs and network security appliances.
• 5+ years Linux networking incl. firewall config (netfilter/iptables/nftables), DNS filtering, QoS.
• 3+ years with SASE components (DLP, SWG, ZTNA, CASB, sandboxing).
• 2+ years with Linux userspace fast-path (VPP, DPDK).

Responsibilities

• Architect and develop multi-tenant cloud-native networking and security solutions.
• Optimize traffic steering, policy orchestration, and security enforcement.
• Develop telemetry and analytics for network visibility and threat detection.
• Develop software to optimize cloud egress and gateway hosting costs while maintaining security and performance.
• Develop cloud networking apps using Go & PHP for traffic management, security policy orchestration, observability, and service chaining.

Skills

Backend systems

Go programming

PHP programming

Cloud-native networking

Linux networking

SASE security

DPI/IDPS/DNS filtering

VPP/DPDK

Tools

Kubernetes

CNI (Calico/Cilium)

ELK stack

Redis

Cassandra

Kafka

Git

VPN (IPSec/WireGuard)

Job description

About Kaseya

Kaseya is the leading provider of AI-powered IT management and cybersecurity software, serving Managed Service Providers (MSPs) and internal IT organizations worldwide. Our comprehensive platform helps organizations efficiently manage, secure, and automate their IT environments, driving operational efficiency and long-term business success.

About Kaseya

Kaseya is the leading provider of AI-powered IT management and cybersecurity software, serving Managed Service Providers (MSPs) and internal IT organizations worldwide. Our comprehensive platform helps organizations efficiently manage, secure, and automate their IT environments, driving operational efficiency and long-term business success.
Backed by Insight Partners, a leading global software investor, Kaseya has experienced sustained double-digit growth and continues to expand its global footprint. Today, Kaseya supports customers in more than 20 countries and manages over 15 million endpoints worldwide.
Founded in 2000, Kaseya has built a culture centered around innovation, accountability, and results. We are a high-growth, high-performance organization that values individuals who are driven, adaptable, and committed to delivering exceptional outcomes for our customers and teammates alike.
At Kaseya, success comes from embracing challenges, moving with urgency, and continuously raising the bar.

Position Summary

We are seeking a Sr. Staff Network Software Engineer to architect and develop scalable and multi-tenant cloud-native networking solutions and security architectures. This role blends cloud networking expertise with software development.

The ideal candidate has deep experience in cloud-native Next-Generation Firewalls (NGFWs), Zero Trust Security, and Secure Access Service Edge (SASE) stack, along with hands‑on cloud software development, data plane engineering, and cloud automation. The role will focus on building high-performance, multi-tenant cloud networking solutions for multiple deployment scenarios, integrating public and private clouds, cloud-managed networking devices, and SASE components.

This is a hands-on role: you’ll define the design, write and review code, and guide teams through delivering production systems.

Key Responsibilities

• Architect and develop multi-tenant cloud-native networking and security solutions in public, private cloud, and hybrid environments.
• Optimize traffic steering, policy orchestration, and security enforcement.
• Develop high-speed telemetry and analytics solutions for network visibility and threat detection.
• Develop software solutions to optimize cloud egress and gateway hosting costs, reducing expenses while maintaining network security and performance.
• Develop cloud networking applications using Go & PHP for traffic management, security policy orchestration, network observability, and service chaining.

Required Qualifications

• 10+ years of experience in software engineering, with at least 7+ years focused primarily on backend systems.
• 3+ years of experience in a Staff, Principal, or Architect role with end-to-end ownership of architecture and delivery.
• 5+ years of hands-on programming experience in Golang, PHP.
• 3+ years of hands-on experience with cloud-native NGFWs and network security appliances.
• 5+ years of experience in Linux networking, including firewall configuration using netfilter, iptables, and nftables, as well as DNS filtering, traffic shaping, and QoS.
• 3+ years of experience with network security technologies including DNS filtering, Deep Packet Inspection (DPI), Intrusion Detection and Prevention Systems (IDPS), Anti-Virus, and SSL Proxy.
• 2+ years of experience working with SASE components such as DLP, SWG, ZTNA, CASB, sandboxing, anti-malware, and anti-virus.
• 2+ years of hands-on experience with Linux userspace fast-path frameworks such as VPP and DPDK

Preferred Qualifications

• Hands-on experience with fast path Linux Kernel fast path technologies like eBPF, XDP, and AF_XDP.
• Proven experience with data-path Multitenancy like VXLAN, Linux Namespaces and VRFs.
• Solid background in containerization and Kubernetes orchestration, including CNI selection, configuration, and troubleshooting.
• Familiarity with cloud-native Networking frameworks, like Cilium and Calico.
• Working experience with ELK stack, database stores like Redis and Cassandra, and message queues like Kafka.
• Knowledge of continuous integration workflows, testing tools, and source code management tools (e.g., Git).
• Strong experience with VPN technologies like IPSec and WireGuard.

#IND525

Kaseya provides equal employment opportunity to all employees and applicants without regard to race, religion, age, ancestry, gender, sex, sexual orientation, national origin, citizenship status, physical or mental disability, veteran status, marital status, or any other characteristic protected by applicable law.