Senior Backend Engineer — Python / Low-Latency Systems

Fireplace builds a pro-trading terminal for prediction markets, focused on delivering real-time data, execution speed, and institutional-grade workflows. The backend team owns systems that process high-frequency market data, power trading decisions, and ensure reliability under load. This role aligns with blockchain infrastructure roles, where backend performance directly impacts product correctness.

As a Senior Backend Engineer, you will design low-latency APIs, real-time WebSocket infrastructure, and data pipelines that handle fast-moving datasets. You’ll work across Python and low-latency systems in a remote environment, owning system architecture, data flow design, and production reliability end-to-end.

Supporting efforts around building a web3 engineering team for high-performance trading systems.

🔹 Responsibilities

• Design, build, and maintain low-latency backend APIs that power trading workflows
• Architect and operate fault-tolerant, high-throughput WebSocket servers for real-time market data
• Design and evolve core system architecture as the platform scales
• Build and optimize data engineering and data processing pipelines for market data, trades, and positions
• Optimize database schemas and queries for performance under heavy read/write load
• Debug and resolve production issues across networking, data consistency, and system performance
• Collaborate with frontend and full-stack engineers on real-time data contracts
• Use AI tools to accelerate development while maintaining system correctness and quality
• Own systems end-to-end from design through production reliability

Aligned with expectations of what recruiters look for in crypto jobs.

🔹 Requirements

• 3+ years of professional backend or systems engineering experience
• Strong experience designing and building production backend APIs
• Experience building low-latency, fault-tolerant systems
• Strong experience in Python along with one low-latency language (C++, Rust, or Golang)
• Hands-on experience with WebSocket servers or real-time communication systems
• Strong understanding of database performance, indexing, and query optimization
• Experience building data pipelines and processing large or fast-moving datasets
• High ownership mindset with strong systems-level thinking
• Attention to detail, especially around correctness and failure modes
• Experience with Clickhouse is a plus
• Experience deploying services on Google Cloud is a plus
• Experience in HFT or exchange environments is a plus

🔁 Discover more remote web3 jobs and backend-focused blockchain roles at ArtofBlockchain.club