What tech stack does Ramp use?
Ramp's engineering stack centers on Python and TypeScript running on AWS, with PostgreSQL and RabbitMQ in the data layer and Elixir powering latency-critical systems like its real-time card-authorization engine. The detail below is detected from public sources — StackShare, Ramp's own engineering blog, and job postings — so it reflects what Ramp builds with, not a vendor list it has confirmed.
- Frontend
- TypeScript · React
- Backend
- Python (Flask)
- Critical path
- Elixir
- Cloud
- AWS
- Data
- PostgreSQL
- Mobile
- Swift / SwiftUI
Detected technologies
What Ramp builds with, grouped by layer (from StackShare, job posts, and Ramp's engineering blog).
- TypeScript· Frontend
- React· Frontend
- Vite· Frontend
- Python· Backend
- Flask· Backend
- Elixir· Backend
- AWS· Infrastructure
- RabbitMQ· Infrastructure
- PostgreSQL· Data
- SwiftUI· Mobile
- Bazel· Mobile
Sources:StackShare — Ramp
What does Ramp use on the backend?
Ramp's largest backend service is written in Python (Flask), running on AWS with PostgreSQL for storage and RabbitMQ for messaging. For a handful of latency- and correctness-critical systems — most notably its real-time card-authorization engine and its risk-analysis platform — Ramp uses Elixir, whose concurrency model fits workloads that must respond in milliseconds at high volume. This split (Python for the bulk of the product, Elixir for the hot path) is a deliberate engineering choice the team has written about publicly.
What does Ramp use on the frontend and mobile?
On the web, Ramp builds with TypeScript and React, bundled with Vite, on top of an in-house design system called Ryu. Its mobile apps use modern native Swift — SwiftUI, Swift Concurrency, and The Composable Architecture — built with Bazel and shipped through Buildkite, with OpenAPI generating typed clients. The investment in an in-house design system and modern native tooling signals a sizeable, opinionated product-engineering organization.
What Ramp's stack means if you sell to them
For a vendor, Ramp's stack is a qualification and positioning signal. Its heavy AWS, Python, and PostgreSQL footprint maps cleanly to infrastructure, observability, data, and developer-tooling pitches, while the Elixir hot path and home-grown design system show a team that prefers to build over buy — so integration and augmentation tend to land better than wholesale replacement. Because stack data is detected from job posts and tools like StackShare, treat it as directional and confirm specifics during discovery.
As of June 2026.Sources:StackShare — Ramp tech stackRamp Engineering — Elixir at Ramp
Ramp — frequently asked questions
