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About the Role

depthfirst is seeking an Infrastructure Software Engineer to build, scale, and secure the infrastructure powering the company's operations. This role involves managing cloud and Kubernetes environments, production services for sandboxes, and orchestrating compute resources. The position combines deep infrastructure expertise with hands-on software engineering, focusing on designing and developing infrastructure services, improving system reliability and efficiency, and enhancing security.

Responsibilities

Build and operate cloud infrastructure and Kubernetes clusters supporting production systems and engineering teams.
Design and develop production sandbox management and orchestration services, including APIs and distributed coordination.
Improve workload scheduling, autoscaling, and capacity management.
Strengthen infrastructure security through workload isolation, access controls, network policies, and secure configuration.
Improve performance and cost efficiency by reducing startup latency, increasing resource utilization, and addressing system bottlenecks.
Build observability and operational tooling.
Debug production issues across service code, Kubernetes, Linux, networking, and cloud infrastructure, and implement durable fixes.
Improve infrastructure as code, deployment pipelines, and upgrade processes.

Requirements

Experience building and operating cloud infrastructure and production systems in infrastructure engineering, platform engineering, SRE, or a similar role.
Strong hands-on knowledge of Kubernetes, including workload scheduling, networking, resource management, scaling, and troubleshooting.
Familiarity with different deployment architectures/concepts such as SaaS, Bring-Your-Own-Cloud, air-gapped, etc.
Strong software engineering skills in a language such as Go, with experience designing, building, and maintaining production services.
Experience developing distributed systems, including handling concurrency, retries, partial failures, and resource lifecycle management.
A solid understanding of Linux, containers, networking, and cloud security fundamentals.
Experience with infrastructure as code, CI/CD, and production observability.
Ability to reason about tradeoffs between reliability, security, performance, cost, and operational complexity.
Ownership from design and implementation through deployment and ongoing operation.
Strong communication skills and the ability to work through ambiguous problems with other engineers.
Based in or willing to relocate to San Francisco.

Skills

Go
Kubernetes
Linux
Containers
Networking
Cloud Security
Infrastructure as Code
CI/CD
Observability
AWS
EKS
Helm
Terraform
Pulumi
Infrastructure control planes
Kubernetes controllers
Operators
Workload orchestration systems
Sandboxing
Virtualization
Secure execution environments

Location

San Francisco

Work Type

Onsite

Experience Level

Infrastructure Engineering
Platform Engineering
SRE

Salary/Compensations

Competitive salary with meaningful equity

Benefits

Health, vision, and dental insurance
Office lunch and dinner when working from our San Francisco office

About the Company

depthfirst believes software is the foundation of modern civilization and is on a mission to secure the world's software.
The company is building intelligence to detect and remediate critical software vulnerabilities using security AI agents to discover zero-day vulnerabilities.
The founding team has deep expertise in data, infrastructure, security, and LLMs, with technical leaders from DeepMind, Databricks, Square, and Faire.
depthfirst is looking for strong technical individuals interested in the intersection of AI, Security, and Infrastructure.

Equal Opportunity

depthfirst is an equal opportunity employer and does not discriminate on the basis of race, gender, sexual orientation, gender identity/expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related condition, or any other basis protected by law.