Software Engineer Security
Slash Financial is a fintech company providing an integrated financial platform for businesses, including business banking, corporate cards, treasury, working capital, invoicing, and global payments. Its customers range from startups and agencies to enterprises and other specialized businesses.
Maintainer signals as of 8/23/2026
Funding history
Projects
About Slash Financial, Inc.
Slash Financial provides business financial services through a unified platform that combines banking accounts, corporate charge cards, spend controls, treasury management, working-capital financing, invoicing, bill pay, accounting tools, APIs, and global payment capabilities. It also supports stablecoin payments and global USD accounts for international businesses. Slash serves more than 10,000 businesses, including startups, enterprises, e-commerce brands, agencies, contractors, healthcare organizations, wholesalers, travel agencies, and Web3 companies. Banking and other regulated financial services are provided in partnership with third parties including Column N.A., Lead Bank, Atomic Invest, and digital-asset providers.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will own and scale the security of the platform across network, infrastructure, and application layers. You will define and manage the security program, harden Cloudflare, AWS WAF, VPC networking, and infrastructure, implement application security features, coordinate penetration tests and bug bounty remediation, support PCI and SOC 2 compliance, establish security tooling and guardrails, secure corporate IT systems and endpoints, and communicate with customers, stakeholders, and vendors about security practices.
Requirements
- Security generalist knowledge across infrastructure and application code
- Knowledge of Kubernetes/EKS, CockroachDB, Kafka, Terraform/Pulumi, and AWS
- Proficiency in TypeScript or another object-oriented language
- Ability to coordinate penetration tests, audits, and competing security priorities
- Ability to identify gaps and independently drive high-impact changes
- Current or recent founder in the security space, or 2–5 years of experience with rapid promotion to senior or staff level at companies with a high security bar
Responsibilities
- Own the security program end-to-end
- Manage and harden Cloudflare, AWS WAF, VPC networking, and infrastructure
- Implement application security features such as passkey authentication and SMS rate limiting
- Manage recurring penetration tests and the bug bounty program
- Coordinate security remediation across engineering
- Support PCI and SOC 2 compliance efforts
- Establish security patterns, tooling, and guardrails
- Secure company equipment and endpoints
- Answer customer, stakeholder, and vendor questions about security practices
Benefits
- Equity
- Comprehensive health and benefits plan
- Unlimited PTO