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About the Role

River Markets is building the prime brokerage and execution layer for prediction markets, providing the infrastructure professional and institutional traders need to access, trade, and manage risk across venues at scale. We value ownership, speed, and a high technical bar, expecting to achieve more with fewer people. Our operating model is AI-native, with every engineer using AI tooling for coding, workflow automation, and building LLM-based systems.

Responsibilities

Build and maintain systems for order book, execution stack, exchange connectivity, and portfolio management.
Integrate with external exchanges and APIs, prioritizing reliability and low latency.
Write high-quality, testable code and improve code quality through reviews.
Enhance infrastructure, reliability, and observability to enable rapid development without system failures.
Contribute to defining engineering culture, standards, and early hiring decisions.

Requirements

Shipped a feature in production used by real traders within the first week.
Owned a core system end-to-end, including architecture and monitoring, within the first month.
Shared engineering culture and participated in hiring decisions within the first three months.
Designed, shipped, and operated production systems, ensuring their ongoing reliability.
Proficient in a modern language (Python, Go, Rust, or similar) and comfortable across the full stack (backend, data pipelines, frontend).
Solid understanding of system design, API design, and data modeling for low-latency, scalable applications.
AI-native approach, automating personal work and utilizing AI tooling for increased productivity.
Ability to thrive in a small, high-ownership environment with minimal supervision.
Experience in fintech, trading, or market infrastructure is a plus.
Genuine interest in prediction markets is a plus.

Skills

Python
Go
Rust
Backend services
Data pipelines
User-facing components
System design
API design
Data modeling
Low-latency applications
Scalable applications
AI tooling
Automation

Location

San Francisco Bay Area

Work Type

On-site

Experience Level

2+ years of full-time experience in Software Engineering or similar role

Salary/Compensations

$140,000–$200,000

Benefits

0.5%–1.5% equity
100% premium coverage for platinum health insurance plan
Unlimited PTO (minimum 3 weeks)
Food provided in office
Dog-friendly office
Fresh fruits and snacks
Monthly team building activities
401(k) match fully vested
Visa sponsorship

About the Company

River Markets is building the prime brokerage and execution layer for prediction markets.
The company was founded by individuals with 3 years of experience as quants in HFT shops and hedge funds.
They are using their experience to build trading infrastructure for prediction markets.
The company is currently connected to 3 exchanges, has 6 proprietary execution algorithms, and already has paying users.