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# Senior Bitcoin Lightning Engineer (Full-Stack) - PT - WW

- **Company:** Arc Full-time
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Temporary contract
- **Skills:** Application Programming Interfaces (APIs), Linux, Firmware, Python (Programming Language), Node.Js, Open Source Technology, Software Engineering, TypeScript, ReactJS, Backend, Fastapi, Openwrt, Build Management, Enterprise Integration, Bitcoin
- **Published:** October 15, 2026
- **Apply:** https://arc.dev/signup?userType=developer&publicRandomKey=prjpje6skt&to=https%3A%2F%2Farc.dev%2Fdashboard%2Fd%2Fverified-jobs%2Fprjpje6skt%2Fapplication

## About the Role

* 5+ years of software development, with strong TypeScript and React
 * Hands-on experience with Bitcoin and the Lightning Network: channels, liquidity, invoices, payments, and how a node relates to a wallet
 * Experience building against LND or Core Lightning APIs (gRPC/REST)
 * Backend development experience, ideally Python (FastAPI)
 * Comfortable with Git/GitHub workflows, including forking and maintaining upstream open-source projects
 * Able to read an unfamiliar codebase and give accurate hour estimates for scoped work, * Built or contributed to a Bitcoin/Lightning wallet or node interface (RaspiBlitz, RTL, ThunderHub, Umbrel, Zeus, BTCPay Server, StartOS)
 * Experience with Linux-based or embedded environments (OpenWrt a bonus)
 * Exposure to IoT or DePIN projects
 * UI/design sensibility

## Description

You'll own the client's Lightning wallet end to end, from a scoped rebrand to a custom product integrated with the client's network. This is a long-term role. Phase 1 is where you and the client confirm the fit.

Phase 1: Rebrand (approx. 3-4 weeks)

 * Fork and configure the raspiblitz-web repository
 * Apply the client's brand identity (logos, colors, typography)
 * Rename the "Satoshi" unit to the client's branded unit in labels and display logic
 * Ensure the UI is consistent and responsive on desktop and mobile

Phase 2: Custom wallet features

 * Design and build wallet features specific to the client's ecosystem
 * Extend the backend (blitz_api) and Lightning node interactions as needed
 * Work with the in-house designer and the existing team in Canada and India

Phase 3: Network integration

 * Integrate the wallet's Lightning payments with the client's DePIN network and node infrastructure
 * Collaborate with the hardware/firmware team on how payments connect to OpenWrt-based nodes and the network ledger