• Responsible for the network and on-premises virtual infrastructure development, security, and operations • Integrate network/computer/storage management system for Cloud Service Providers and on-premises Infrastructure-as-a-Service (IaaS) solutions into full-lifecycle operational service delivery and project management platforms • Design and deploy hardened and compliant office and enterprise Network Infrastructure supporting multi-tenant, virtualized and/or High-Performance Computing production environments • Develop and maintain security, availability, performance, and scalability, continuous improvement, and monitoring for highly available and redundant network and virtual infrastructure • Take ownership of project requirement development, deployment, and operational release management

• Architect and design the physical infrastructure to support data center scale deployments of networks, servers, and GPU including rack layouts, components, cable management, power, and cooling requirements. • Work with internal teams and vendors to define and develop the hardware deployment strategies and designs needed to support business, scalability, redundancy, and security requirements. • Create and evaluate hardware BOMs for deployments to ensure that they meet business and design requirements. • Create documentation, drawings, cable schedules, and technical documentation required by both technical and non-technical audiences. • Partner with facilities, vendors, and onsite contractors to successfully build and turn up new facilities and hardware deployments. • Validate installation and connections against design specifications • Work with internal teams and contractors to troubleshoot and resolve any issues found with the hardware or connectivity. • Work in conjunction with project management teams and other stakeholders to manage the physical infrastructure aspects of projects. • Create and maintain documentation for physical infrastructure as well as assist in training other technical teams on physical infrastructure.

• Design and implement availability, scalability, and performance plans for the services environments • Develop security capabilities and encourage adoption of security best practices and architecture changes throughout the company via evangelism and education • Take ownership of automating infrastructure deployment and configuration, lead the creation of CI/CD pipelines for applications, and develop CI/CD best practices across the team • Perform development, automation, and deployment assignments without close supervision • Provide application development and cloud technology leadership, guidance, and assistance to other team members

Role Description We're looking for an infrastructure engineer to join our small but growing platform team. The platform team at Knock is responsible for building, scaling, and maintaining the core services and infrastructure that run Knock. You will have a high degree of ownership and autonomy in improving the Knock platform, starting with our foundational infrastructure. We’re an engineer-led team that obsesses over the reliability and availability of our service. We care deeply about building a team and culture that is inclusive and equitable for people of all backgrounds and experiences, and believe firmly that the best teams are diverse. We particularly encourage people from underrepresented communities to apply. Last thing: you can be a great fit even if you don't perfectly match what's described below. We know there's a lot we don't know and haven't thought of yet, and we're looking for teammates that can tell us what those things are. If that's you, don't hesitate to apply and tell us about yourself! What you’ll be doing in this role - Adopting a Terraform-backed EKS cluster, modernizing & maintaining it for elastic scale, reliability, performance, security, etc. - Going deep into troubleshooting Postgres performance, queues of every shape and size, and coming out the other side with a plan for scaling another 10x to 100x. - Identifying and correcting scaling issues before they affect our customers by relying on and improving our telemetry and traces in Datadog, AWS Cloudwatch, and Honeycomb. - Maintaining and improving upon our >99.95% uptime track record. - Supporting our product engineering team at moving fast to deliver customer value. Improving the day-to-day developer experience through canaries, faster cycle time, blue/green deploys, etc. - Joining on-call rotations on a schedule with the rest of the engineering team. - This position is both high autonomy and high accountability: you will have a lot of room to work and raise our existing standards, while also communicating those changes and bringing the rest of the team along for the ride, often in the form of runbooks & internal documentation. Qualifications - 4+ years experience as a DevOps engineer or similar in a startup or mid-sized company working with complex systems that operate at scale. - Experience working in and on production Kubernetes clusters using infrastructure as code (we use Terraform, but others like Pulumi or Cloudformation are fine too). - Experience working on complex AWS deployments (multi-account, complex VPC structure to support EKS, EKS experience). - Experience operating and scaling different database technologies. We use Aurora Postgres, Mongo, and ClickHouse so significant experience with at least one of these is a must. - Some past experience or familiarity operating and scaling different queues and streams across SQS, Kinesis, Kafka or similar. - Strong problem-solving skills with a focus on reliability, scalability, and performance. - Strong communications skills, with the ability to work in a fully distributed, remote-first team. A note on AI at Knock We’re a team that has fully embraced AI tools to help us in our day-to-day. We use these tools to accelerate us, but remain clear-eyed about where they shine and where the pitfalls lie. We’re not overly prescriptive about the tools you can use, and we encourage experimentation as we embrace this new method of working. We have a collaborative culture of figuring out together what works and what doesn’t — sharing what we’ve learned, comparing notes, and iterating on our workflows as the tooling landscape evolves. As a member of the Knock team, we expect you to be familiar with tools like Cursor, Claude Code, Codex, or similar to assist you in your job. You’ll be allowed to use these tools in some parts of your interview loop, but there will be times where we’ll ask that you refrain.