Software Engineer, Security

Doist; San Francisco (CA); On-site; USD 140,000 - 230,000; Full time

Benefits offered by this job

Growth opportunities

Autonomy

Health benefits

Downtown SF office

Unlimited PTO

Job summary

Slash is seeking a Software Engineer to own and scale the security of our platform. You will secure the full stack from network to application and establish guardrails that let the team move quickly without compromising safety.

Responsibilities include managing security across Cloudflare/AWS, coordinating pen tests, and driving compliance efforts while enabling growth and reliability.

Qualifications

• Security generalist with knowledge across the stack from infra to code.
• Hands-on with Kubernetes/EKS, AWS, Terraform and related tools.
• Experience coordinating pen tests, audits, and security priorities.

Responsibilities

• Own Slash's security program end-to-end and drive improvements.
• Secure network, infrastructure, and application layers across the stack.
• Lead pen tests, bug bounty coordination, and remediation efforts.
• Support PCI, SOC 2 and other compliance activities.
• Interface with customers and vendors to demonstrate security practices.

Skills

Security generalist

Kubernetes/EKS

AWS

Network security

Application security

TypeScript

Penetration testing coordination

Education

Bachelor's degree or equivalent in CS/IT

Tools

Cloudflare

WAF

Terraform/Pulumi

CockroachDB

Kafka

Job description

About SlashSlash 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.

About the role

Slash is, at its core, a technology company and is on a mission to build the best engineering team in the world. 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'll 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

We're looking for someone who

• Is a security generalist - knowledgeable across the stack, from infrastructure to application code
• Can think through, understand, reason about, and work on our platform and infra (Kubernetes/EKS, CockroachDB, Kafka, Terraform/Pulumi, AWS) - while spending their day-to-day 100% focused on improving our security
• Is organized and able to coordinate pen tests, audits, and competing security priorities
• Has proficiency in TypeScript or another object-oriented language
• Can find gaps and drive high-impact changes independently, without waiting to be told what to work on
• Potentially fits one of two archetypes:Current or recent founder in the security space2-5 years of experience with rapid promotion to senior/staff level at companies with a high bar for security

What's in it for you

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