Software Engineer

Fullstack; San Francisco, Northern (CA, KY); Hybrid; USD 180,000 - 240,000; Full time

Job summary

Fullstack is seeking a Software Engineer to build the backend infrastructure powering a real-time trading platform. You will design and ship services handling live market data, orchestrating cross-venue integrations and high-throughput event streams.

Join a team that works across blockchain environments, data pipelines, API services, and deployment automation to deliver fast, reliable execution for traders in volatile markets.

Qualifications

• Production Rust expertise with ownership and async patterns.
• Strong systems programming and concurrency understanding.
• Experience designing robust API interfaces.
• Ability to optimize for low-latency, high-throughput systems.

Responsibilities

• Build real-time backend services for a trading platform.
• Develop risk engines and state machines for trading and risk ops.
• Create distributed services with async coordination.
• Implement data pipelines and event streaming.
• Integrate with external trading venues via APIs.
• Profile, test, and deploy containerized services.
• Ensure reliability with monitoring and observability.
• Collaborate with blockchain and product teams in person.

Skills

Production Rust

Async & Concurrency

API Design

Performance Mindset

In-Person Collaboration

Tools

Docker

Tokio

REST APIs

gRPC

Job description

The Role

As a Software Engineer at Fullstack, you will build the backend infrastructure that powers a real-time trading platform. You will design and ship services that handle live market data, orchestrate cross-venue integrations, and process high-throughput event streams. You will work across blockchain execution environments, data pipelines, API services, and deployment automation. You will collaborate closely with blockchain and product teams to ensure the platform delivers fast, reliable execution for traders operating in volatile markets.

What You’ll Build & Solve

Risk Engines: Build complex risk management and liquidation engines to optimize capital utilization and user liquidity.

State Machines: Design and Build complex blockchain state machines that serve as the backend for all trading and risk operations.

Distributed Systems: Build services that maintain state consistency across complex async processes. Design voting and coordination mechanisms for reaching consensus on external events.

Real-Time Services: Process live market data and coordinate actions across trading venues. Handle WebSocket streams and data aggregation where milliseconds matter.

Data Infrastructure: Build event streaming pipelines that ingest and transform high volume data. Design time-series schemas for complex queries. Create indexing services for real-time data access.

External Integrations: Build services that connect to external trading venues. Handle API rate limits, connection failures, and data validation across distributed sources.

API Services: Build REST and WebSocket APIs that power the trading interface. Design caching strategies for millisecond response times.

Performance & Operations: Profile and optimize async Rust code. Deploy containerized services. Build monitoring and alerting for zero-downtime deployments.

What You Bring

Production Rust: Strong grasp of ownership, lifetimes, and async programming. Comfortable debugging at any level of the stack.

Systems Programming: Deep understanding of how databases, networks, and concurrency actually work. Can reason about performance and make informed tradeoffs.

Async & Concurrency: Experience building async systems with Tokio. Know when to use channels vs locks and how to design for high throughput without data races.

Database Proficiency: Experience with relational databases, time-series databases, and key-value stores. Know your way around indexing, query optimization, and schema design.

API Design: Built REST or gRPC APIs before. Care about type safety, error handling, and observability.

Performance Mindset: Profile before you optimize. Understand allocation patterns and can tune systems under load.

Production Operations: Comfortable deploying and debugging services in production. Experience with Docker, monitoring, and building for reliability.

In-Person Collaborator: Thrive in high-bandwidth, in-person engineering environments.

Work Authorization: Must be authorized to work in the United States.