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 8/23/2026
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 build back-end frameworks that support latency- and performance-driven systems. You will implement and design orderbook architecture, distributed account systems, and reputational systems, while creating highly available, secure, robust systems and shipping features for market makers, high-frequency traders, and users.
Requirements
- Live in the US
- 3+ years of experience writing software in production
- 3+ years scaling and maintaining backend systems
- Own Bitcoin
Responsibilities
- Build back-end frameworks
- Implement and design orderbook architecture
- Design distributed account systems
- Design reputational systems
- Design systems for high availability, performance, and uptime
- Ship features for market makers, high-frequency traders, and users
Hiring Process
1. Intro Call: 30 minute casual chat with founder. 2. Deep Dive: 45 minute conversation talking through things you've built in detail. 3. Comp Review: 30 minute chat with founder to go over the offer. 4. Work Trial: 1-3 week, paid consulting project where you ship something with the team.
