Senior Infrastructure Engineer
Senior Infrastructure Engineer at Mitti (by SafetyCulture) in Sydney, building a greenfield hybrid network: connecting existing AWS and GCP environments to a new colocation facility with a multi-homed BGP internet edge and an EVPN/VXLAN fabric, treating network and hardware operations as software. First hire into a new team; networking specialist, infrastructure generalist.
- Compensation
- Not disclosed
- Location
- Sydney
- Work setup
- Hybrid
- Seniority
- Senior
- Employment
- Not specified
- Experience
- Not specified
- Category
- Devops
- Posted
Skills
Must have
- Production experience running a multi-homed BGP network (peering, traffic engineering, path selection, diagnosing issues like link flapping)
- Strong IP networking fundamentals and packet-level debugging (Wireshark or equivalent)
- Designing and troubleshooting an EVPN/VXLAN overlay fabric with ECMP multipath forwarding
- Strong Linux system administration, including treating network devices as Linux systems
- Working knowledge of Kubernetes networking (CNI plugins, services, ingress, load balancer integration) in self-managed or bare-metal environments
- Ability to write working Python or Go to automate network and infrastructure tasks
- Experience building or operating cloud network architecture in AWS or GCP (VPC design, transit routing, private connectivity, VPNs)
- Hands-on familiarity with physical infrastructure (racking, cabling, power, out-of-band management via BMCs)
- Fluent, everyday use of AI tooling for engineering work (infrastructure code, automation, runbooks, incident investigation)
- Loves building from scratch, makes decisions with incomplete information, and is self-directed
- Scrappy and cost-conscious; experiments properly with hypotheses, tests and documentation
- Collaborative: takes code review seriously and knows when to pull in specialists
Nice to have
- Experience with open network operating systems such as SONiC
- Experience with Terraform and Ansible
- Experience with enterprise or data centre network vendors (Arista, Juniper, Cisco or similar)
- Public internet routing experience (RIR allocation, RPKI, route origin validation)
- Kernel-bypass networking experience (VPP, DPDK)
Full description
Why join us?
Mitti by SafetyCulture is a global tech company, just not the kind you're picturing. Our almost 1,000-person team builds tools that make work better for the three billion frontline workers who keep the world moving. We've got big tech scale, without the sign-off layers or corporate theatre. This next chapter is about scaling smart, powered by AI, a clear vision and real ownership.
Big tech impact, without the big tech ick.
Role Purpose
This role exists to build Mitti's hybrid network, connecting our existing Amazon Web Services (AWS) and Google Cloud Platform (GCP) environments to a new physical colocation (colo) facility, and connecting that facility to the internet through our own multi-homed network. It's a greenfield build that starts with research and development (R&D) workloads, so we can prove the foundation before production follows. It's also a software engineering role: the automation built here has to scale from one site to a global footprint, so network and hardware operations are treated as a software problem from day one.
This is the first hire into a new team. You'll be primarily a specialist across networking and a generalist across infrastructure rather than a deep network only specialist, and this is not a people leadership role.
Not in scope: application-level reliability and service level objectives, sole ownership of the on-premises Kubernetes platform, and corporate IT. These are owned or shared with other teams.
Key Responsibilities
- Design, build and operate Mitti's multi-homed internet edge using Border Gateway Protocol (BGP) with multiple carriers, so traffic moves predictably and losing a path is a non-event.
- Design and run the data centre fabric: an Ethernet Virtual Private Network (EVPN) control plane over Virtual Extensible LAN (VXLAN) overlays with equal-cost multi-path (ECMP) forwarding, so the network scales horizontally and predictably.
- Connect AWS and GCP to the physical network with a routed, secure path (interconnect, transit design, Virtual Private Cloud integration, Domain Name System, load balancing and IP address management), defined in code and reproducible. Use it to prepare for a production integration with AWS & GCP.
- Contribute to enabling Mitti's own routed Internet Protocol (IP) address space, including address and Autonomous System Number (ASN) allocation through the relevant Regional Internet Registry, announcement, peering and route origin validation, and migrate traffic without disruption.
- Build the automation layer for network and hardware operations (provisioning, configuration, validation and change management as code), starting at one site but designed for a global footprint.