Member of Technical Staff (Infrastructure) at MLabs

Toronto, Ontario, Canada -

Full Time

Start Date

Immediate

Expiry Date

19 May, 26

Salary

200000.0

Posted On

18 Feb, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Nomad, Firecracker, Kubernetes, eBPF, Cgroup V2, NUMA Scheduling, Anycast Routing, Pulumi, AWS, GCP, Azure, Linux Internals, Multi-tenancy, Go, Rust, TypeScript

Industry

IT Services and IT Consulting

Description

Member of Technical Staff (Infrastructure) On-site | Full-time Compensation: $140K-$200K (CA$190K – CA$280K) We are building the open-source browser infrastructure that powers the next generation of AI agents. With over 6,000 GitHub stars and millions of sessions served monthly, our platform grew 50x in 2025 alone. We provide the "eyes and ears" for AI, allowing developers to ship products that interact with the web seamlessly via our API. As one of our first ten employees, you will join a high-performance, talent-dense team of four. We are backed by world-class investors and focused on solving the hardest problems in distributed systems, from kernel-level debugging to global VM orchestration. The Role As a Member of Technical Staff, you will build and scale the distributed systems that power millions of browser sessions. Browsers are notoriously resource-heavy; your mission is to make them fast, ephemeral, and globally accessible. You will work across the stack, but your primary focus will be on the core infrastructure that ensures sub-second startup times and robust multi-tenant isolation. Key Responsibilities: Global Orchestration: Designing and maintaining VM orchestration (using Nomad, Firecracker, and Kubernetes) with intelligent scheduling and sub-second cold starts. Systems Engineering: Implementing kernel-level observability (eBPF) and optimizing resource isolation using cgroup v2 and NUMA scheduling. Networking: Building high-performance networking layers, including anycast routing and cross-region failover. Infrastructure as Code: Managing multi-cloud deployments (AWS/GCP/Azure) and customer VPCs using Pulumi. Product Ownership: Building developer primitives for reliable browser automation and contributing to our open-source ecosystem. Experience: 5+ years of experience operating production-scale distributed systems handling thousands of requests per second. Linux Internals: Deep knowledge of the Linux kernel, syscall optimization, and eBPF. Security & Isolation: A "battle-tested" understanding of multi-tenancy, resource limits, and security boundaries. Network Fundamentals: Ability to debug complex production issues like packet loss or routing failures at the protocol level. Execution: A bias for action and the autonomy to own outcomes from architecture to deployment. Preferred Qualifications Production experience with VM hypervisors (Firecracker, QEMU, or KVM). Experience building custom orchestration layers rather than just consuming existing APIs. Contributions to Linux kernel, hypervisors, or major open-source infrastructure projects. Previous experience as a founder or an early engineer at a high-growth infrastructure startup. The Tech Infrastructure: Kubernetes, Nomad, Firecracker VMs, Pulumi, Go, Docker Backend: Rust, Node.js, Fastify, NATS, PostgreSQL, Redis Frontend: TypeScript, React, Vite Debugging: Grafana, Loki, Axiom, distributed tracing, eBPF, kernel tracing Mostly TypeScript for cohesion. Rust/Go for hot paths. Linux internals everywhere. We offer the high-leverage environment of a founding team with the stability of a well-funded, high-growth company. Competitive Compensation: Salary range of $140K-$200K (CA$190K – CA$280K) Health & Wellness: Comprehensive health, dental, and vision insurance for you and your family, plus gym membership subsidies. Top-Tier Tools: A brand-new laptop and home office setup of your choice. Impact: Direct influence on architectural decisions and the opportunity to work with innovative AI companies across healthcare, supply chain, and more. Culture: Regular team events, off-sites, and a high-autonomy environment where your work directly impacts the product's success. Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search. Commitment to Equality and Accessibility: At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing human-resources@mlabs.city. MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd’s Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting legal@mlabs.city.

Responsibilities

The role involves building and scaling distributed systems to power millions of browser sessions, focusing on making browsers fast, ephemeral, and globally accessible. Key tasks include designing VM orchestration, implementing kernel-level observability, building high-performance networking layers, and managing multi-cloud infrastructure.