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Software Engineer, Security

Slash Financial, San Francisco Office

Posted pay

$250K–$350K

a year

Location: San Francisco Office
Work type: Onsite
Level: Not given
Skills in the job text: AWS
TypeScript
Kubernetes
Terraform
Kafka
Posted: Aug 12, 2026
Last check: 5 h ago
Job type: Security engineering

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SF

Slash Financial

About Slash Financial: funding, hiring and pay

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The role

This is a hands-on engineering role focused on security: you’ll build and ship changes to our application and infrastructure, not just assess risk or coordinate fixes. We're looking for a Software Engineer to own and scale the security of our platform as we grow fast. You'll be responsible for keeping our systems secure across the entire stack — from network and infrastructure to application-level security — while establishing the patterns and guardrails that let the rest of the team move quickly without having to worry about security.

You'll define and own our security program end-to-end, and play a key role in enabling Slash to serve billions of dollars in business spend reliably and securely.

What you will do

Own Slash's security program end-to-end — find gaps, prioritize, and propose and drive changes independently
Work on network security: manage and harden our Cloudflare implementation, AWS WAF, VPC networking, and overall infrastructure posture
Work on application security: ship features like passkey authentication, SMS rate limiting, and other product-level hardening
Manage recurring pen tests and our bug bounty program, and coordinate remediation across engineering
Assist on compliance efforts like PCI and SOC 2
Establish security patterns, tooling, and guardrails that enable the rest of the team to move fast safely
Own corporate IT security, including keeping company equipment and endpoints secure
Interface with customers, internal stakeholders, and key vendors to answer questions and provide confidence in Slash's security practices

What you need

Is a software engineer first – has experience building and shipping production software in TypeScript or another programming language, and wants to apply those skills to security. Doesn’t just identify gaps or recommend fixes; writes the code and owns the implementation.
Has broad security knowledge across application code and infrastructure, and is comfortable reading, debugging, and changing the systems they’re securing. Our stack includes Kubernetes/EKS, CockroachDB, Kafka, Terraform/Pulumi, and AWS.
Can independently identify security gaps, prioritize them based on risk, and drive high-impact improvements through to production without waiting to be told what to work on.
Is organized and able to coordinate pen tests and audits, manage competing security priorities, and ensure findings get resolved

Pay and benefits

Opportunity for high growth
High autonomy + ownership culture
Comprehensive health + benefits plan
Working out of our downtown San Francisco office space
Unlimited PTO

About Slash Financial

Slash is building the future of business banking, one industry at a time. We believe businesses deserve financial infrastructure tailored to how they actually operate. That's why we're creating a new category of business banking. We combine the reliability of traditional banking (high yields, competitive rewards, and comprehensive security) with industry-specific features that make businesses more efficient, more competitive, and more profitable.

Started in 2021, Slash is one of the fastest growing fintechs in the world and we power over ten billion dollars a year in business purchasing across numerous industries. We recently raised a $100M Series C led by Ribbit Capital with participation from Khosla Ventures, Goodwater Capital, NEA, and Y Combinator, accelerating our expansion into new markets and products.

Slash is headquartered in San Francisco, and has a strong in-person culture.

Read the job posting on the Slash Financial site

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Source: the Slash Financial Ashby job board. We last checked this job 5 h ago. We first saw it 4 days ago. A job on a job board does not always mean that the team interviews people now. We found this job board in a public list. We did not yet compare it with the careers page of the company.

SF

Slash Financial

Open tech jobs: 7
With posted pay: 71%
Median posted base: $250K–$350K

About Slash Financial: funding, hiring and pay

Compared with similar jobs

This base pay is above the median for security engineering jobs in the Bay Area with no level in the job title.

Median: $215K a year
Other jobs in the group: 224

We compare the middle of each posted range. This is base pay as posted. The group does not include this job.