Backend Engineer
Flashnet is a non-custodial exchange described as the fastest on the most secure ledger, allowing users to trade Bitcoin at scale without ever giving up control of their keys. It offers millisecond execution and native settlement of any asset on Bitcoin.
Maintainer signals as of 8/10/2026
Funding history
Projects
About Flashnet
Flashnet provides a state-of-the-art, non-custodial trading experience on Bitcoin, featuring millisecond execution and native settlement of any asset. Users retain control of their funds at all times and can sequence to L1 instantly. The platform is hyper-efficient with near-instant, low-fee execution on an orderbook that rivals centralized exchanges, and it supports native, verifiable, and interoperable trading with real BTC without bridging. For developers, Flashnet offers tools to integrate trustless, non-custodial swaps into any Bitcoin experience, providing access to deep liquidity, a dedicated OTC desk, Lightning Network integration, and a fully trustless RFQ model to keep users within their ecosystem.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will be responsible for building back-end frameworks. Your focus will be on latency and performance-driven systems that are secure and robust. You will implement and design orderbook architecture, distributed account systems, and reputational systems. You will design systems for high availability, performance, and uptime, and ship features used by market makers, high frequency traders, and end users.
Requirements
- Live in the United States
- 3+ years of experience writing production software
- 3+ years of experience scaling and maintaining backend systems
- Own Bitcoin
Responsibilities
- Build backend frameworks that prioritize low latency and high performance
- Implement and design orderbook architecture
- Design and maintain distributed account systems
- Design and maintain reputational systems
- Design systems for high availability performance and uptime
- Ship features for market makers high frequency traders and end users