Sr. Systems Engineer

Sr. Systems Engineer

Garden Grove, CA

Harbinger is an American commercial electric vehicle (EV) company on a mission to transform an industry starving for innovation. Harbinger's best-in-class team of EV, battery, and drivetrain experts have pooled their deep experience to bring a first-of-its-kind EV platform to support the growing demand for medium-duty EVs and Hybrids. Harbinger: Familiar Form, Revolutionary Foundation.

We are looking for a Senior Systems Engineer to serve as the primary infrastructure engineer across our cloud and on-premises environments. This role owns the architecture and operations of systems supporting both our corporate workforce and our manufacturing facilities, including the production floor, IoT-connected tooling, and the Manufacturing Execution System (MES). This is a hands-on, broad-scope role. You will design cloud architecture in AWS, manage physical infrastructure in our IDFs and server rooms, and connect our sites together with a secure, scalable network. You should be comfortable moving between writing Terraform, racking hardware, and troubleshooting production issues that affect real vehicles being built.

What You'll Do

• Own cloud and on-premises infrastructure architecture across corporate and manufacturing environments.
• Architect and operate a multi-region, multi-account AWS environment using Terraform as the foundation for company-wide workloads.
• Design and maintain a hub-and-spoke network across 4+ physical locations using AWS Transit Gateway and site-to-site VPN tunnels, with centralized routing and security controls.
• Maintain a hierarchical IP addressing schema spanning cloud and on-prem to prevent routing conflicts and support third-party integrations.
• Design and operate highly available infrastructure for the Manufacturing Execution System (MES) supporting 80+ workstations and 30+ IoT-connected tools across production, staging, and development.
• Integrate EV charging infrastructure and build custom IoT monitoring for critical factory, facilities, and warehouse systems to reduce operational risk.
• Manage physical infrastructure including bare-metal servers, Ubiquiti networking, Synology storage, and UPS-backed IDF/server room environments.
• Partner with manufacturing, IT, security, and engineering teams to deliver infrastructure that meets uptime and security requirements for a 24/7 production environment.

What We're Looking For

• 7+ years of systems, infrastructure, or DevOps engineering experience, including ownership of production environments.
• Strong AWS experience: multi-account architecture, VPC design, Transit Gateway, IAM, and core services (EC2, RDS, S3, ECS, Lambda, CloudWatch).
• Deep Terraform experience managing infrastructure as code across multiple environments.
• Solid networking fundamentals: routing, subnetting, VPNs, firewalls, and IP schema design across hybrid environments.
• Experience with on-premises infrastructure: bare-metal servers, enterprise networking (Ubiquiti, Cisco, or similar), storage, and IDF/server room operations.
• Scripting and automation skills in Python, Go, or similar.
• Comfort working in environments where infrastructure issues have direct operational impact (manufacturing, broadcast, trading, healthcare, etc.).

Nice to Have

• Experience in a manufacturing, industrial, or OT/IoT environment.
• Familiarity with Manufacturing Execution Systems (MES) or other production-floor software.
• Experience with Ansible, Packer, and CI/CD tooling (Buildkite, CircleCI, GitHub Actions).
• Virtualization experience (Proxmox, VMware ESXi).
• Background supporting a fast-growing startup through scaling phases.

Key Benefits & Perks: Comprehensive Health, Dental & Vision (HDV) – 100% employee covered Early-stage Stock Options Robust Retirement Savings (401k, HSA, FSA) Generous Paid Time Off (PTO) & Parental Leave Annual Vacation Bonus Wellness & Fertility Benefits Cell Phone Stipend Complimentary Meals & Stocked Kitchens

California Pay Range

$120,000 - $150,000 USD