Platform Engineer: Developer Infrastructure

About Slash

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 three billion dollars a year in business purchasing across numerous industries. We're backed by some of the best investors in the world including Menlo Ventures, NEA, Y Combinator, Stanford University, and the founders of Tinder and Plaid. Slash is headquartered in San Francisco, and has a strong in-person culture.

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 Platform Engineer focused on Developer Infrastructure to build the internal systems for developers that power product velocity at Slash.

You’ll be responsible for the developer experience across our monorepo — from CI, to code generation and dev tooling, to infrastructure around our internal financial ledger and event systems. You’ll work closely with product engineers to eliminate bottlenecks, create guardrails, and make it feel effortless to build, test, and ship financial software.

This role is ideal for engineers who love building for other engineers — especially those who believe great infra is quiet, elegant, and built to scale with the team. Your work will directly shape how quickly and safely we can move as we grow.

• Own and improve the developer experience across our monorepo — including build speed, typechecking, testing infra, and CI/CD pipelines

• Design and maintain internal tooling around our financial ledger , eventing systems, and product scaffolding

• Identify and eliminate friction in local development, onboarding, and deployment workflows

• Contribute to internal libraries and codegen tools that reduce duplication and make shipping product safer

• Drive best practices in DX, code health, and developer productivity across the company

• Enjoys building for engineers — and has strong opinions and good taste on what makes great DX

• Writes deep, expressive Type Script — and enjoys pushing the type system to model complex behavior

• Has built or contributed to internal frameworks, shared libraries, or codegen tools

• Opportunity for high growth

• High autonomy + ownership culture

• Comprehensive health + benefits plan

• Working out of our downtown San Francisco office space

• Unlimited Vacation