River Tech Stack

Bitcoin brokerage and custody platform for retail and institutional clients

Financial Services San Francisco, California 51–200 employees Founded 2019 Privately Held

River operates a Bitcoin financial services platform built on Elixir and React, with a compliance-heavy engineering roadmap that reflects the regulatory environment of cryptocurrency finance. The tech stack is lean but operationally focused: six engineers are split across backend systems (onboarding, fraud detection, compliance automation) and data infrastructure, while compliance, legal, and ops roles collectively match engineering headcount — a structural choice that signals how much engineering effort flows into regulatory tooling rather than product velocity.

Tech Stack 11 technologies

Core StackElixir React PostgreSQL Kubernetes Figma Python Twitter LinkedIn YouTube Bitcoin SQL

What River Is Building

◆Challenges

Operational inefficiencies in compliance workflows
Scaling production systems
Regulatory audit preparation
Risk gaps in client activity
Operational efficiencies to scale the business

▲Active Projects

Compliance tooling automation
Compliance program policy enhancement
Fraud program support
Improve and automate compliance operations
Analyzing client activity trends
Developing operational efficiencies to scale the business
Elixir backend systems for onboarding, fraud detection, compliance, and operations
Data pipelines, integrations, and analytics infrastructure
Training and inference infrastructure for machine learning models
New features and products in the elixir codebase

Hiring Activity

Minimal10 roles · 0 in 30d

Department

Engineering

Marketing

Compliance

Legal

Ops

Seniority

Staff

Mid

Junior

Senior

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About River

River offers Bitcoin brokerage and full-reserve custody services through a mobile app and web platform. The company serves both individuals and institutional clients in the U.S., with a mission centered on Bitcoin as a financial asset. Founded in 2019 and headquartered in San Francisco, River operates at 51–200 employees and is backed by private capital. The platform handles onboarding, fraud detection, client activity analysis, and custody operations — all areas where engineering work directly supports compliance obligations and risk management.

HeadquartersSan Francisco, California

Company Size51–200 employees

Founded2019

Hiring MarketsUnited States, Poland

Frequently Asked Questions

What technology stack does River use?

River's primary stack includes Elixir (backend), React (frontend), PostgreSQL (database), and Kubernetes (orchestration), plus Python for data pipelines and machine learning infrastructure.