Member of Technical Staff, Security

San Francisco, CAOnsiteFull TimeStaffPosted 2 days ago

Is this role right for you?

Upload your resume and get a skill-by-skill breakdown — see exactly where you match, where you're close, and what to highlight. Not a mystery percentage.

Get a tailored resume highlighting what this role needs.

Required skills

security engineer
authentication
authorization
tenant isolation
data handling
identity
least-privilege access
secrets management
service credentials
private networking

Nice to have

distributed systems
multi-tenant infrastructure
AI inference platforms

Role summary

Wafer is seeking a hands-on Security Engineer to join their team in San Francisco. This role involves securing their inference cloud systems by reviewing designs, building controls for identity and access, partnering on cloud security, fixing vulnerabilities, improving incident response, and making secure development easier. The position requires strong programming, debugging, and practical understanding of application security, cloud identity, Linux, networking, and secrets management, with good judgment on risk and tradeoffs. Experience with distributed systems, multi-tenant infrastructure, or AI inference platforms is a plus.

Wafer is the fastest inference cloud for open source models.

We're looking for a hands-on security engineer to help secure the systems behind our inference cloud. You'll work directly with engineers to find weaknesses, build practical protections and make security part of how we design, ship and operate software. This is an engineering role: you'll write code, review designs and own fixes.

What you'll do

Review application, API and infrastructure designs for authentication, authorization, tenant isolation and data-handling risks.
Build and improve controls for identity, least-privilege access, secrets and service credentials.
Partner with infrastructure engineers on private networking, workload isolation and secure cloud configuration.
Find, prioritize and fix vulnerabilities, and verify that remediation addresses the underlying issue.
Improve security logging, detection and incident response, including practical tools and automation.
Make secure development easier through design reviews, code reviews and automated checks.
Work with our compliance owner to provide technical evidence for audits and customer reviews, and implement the engineering changes they require.

What we look for

Experience building and securing production software or cloud infrastructure.
Strong programming and debugging skills, with the ability to investigate unfamiliar systems and ship reliable fixes.
A practical understanding of application and API security, cloud identity, Linux systems, networking and secrets management.
Good judgment about risk and tradeoffs. You can prioritize meaningful protections and explain your reasoning clearly.
A record of taking ownership and working closely with engineers from investigation through remediation.

Experience with distributed systems, multi-tenant infrastructure or AI inference platforms is useful.

How we work

Full-time, on-site in San Francisco.

Ready to apply?

You'll be redirected to Wafer's application page.