Fullstack Engineer
Flashnet is a Bitcoin-focused company building non-custodial trading and asset-routing products. Its offerings include a Bitcoin DEX, the Orchestra orchestration API, and USDB, a Bitcoin-native dollar stablecoin that pays rewards in BTC.
Maintainer signals as of 9/25/2026
Funding history
About Flashnet
Flashnet builds modular, non-custodial exchange and liquidity infrastructure for Bitcoin. Its products serve wallets, exchanges, merchants, payout providers, and other teams that need to buy, sell, accept, settle, or route Bitcoin and stablecoins. Orchestra provides APIs for swaps, routing, bridging, settlement, payment links, reusable addresses, fiat onramps, and webhooks; Flashnet Markets provides native BTC trading on Spark; and USDB is a Treasury-backed stablecoin issued by Brale that rewards holders with Bitcoin.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will build and implement web, back-end, and distributed tooling. You will ship features and products end-to-end, design and implement novel features, and connect organizational components to make them consistent and simple while maintaining a focus on simplicity, performance, security, and robustness.
Requirements
- Live in the US
- 3+ years of experience writing software in production
- 3+ years building full-stack applications that have reached more than 25k daily active users
- Own Bitcoin
Responsibilities
- Build and implement web tooling
- Build and implement back-end tooling
- Build and implement distributed tooling
- Ship features and products end-to-end
- Design and implement novel features
- Connect organizational components to make them consistent and simple
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.
