Senior Frontend Developer (Bitcoin Lightning Wallet) - PT - WW

About the company

Client is building a DePIN (Decentralized Physical Infrastructure Network) for IoT connectivity. Its hardware nodes run OpenWrt-based routers that host the network ledger and support multiple wireless protocols, including LoRa, Wi-Fi HaLow, Zigbee, NB-IoT and LTE. The team is now adding a Bitcoin Lightning payment layer to the ecosystem and is building its own branded Lightning wallet on top of the open-source RaspiBlitz project.

The role

You'll own the frontend of client's Lightning wallet. The first phase is a scoped rebrand of the RaspiBlitz web interface. After that, the plan is to extend the wallet into a product tailored to the client's network. This is a long-term role for the right engineer, and Phase 1 is where you both confirm the fit.

Phase 1 (approx. 3–4 weeks)

• Fork and configure the raspiblitz-web repository
• Apply client's brand identity: logos, colors and typography
• Update labels and frontend display logic to rename the "Satoshi" unit to client's own branded unit
• Make sure the UI is consistent and responsive on desktop and mobile

Phase 2 (3+ months)

• Extend the wallet with custom features and integrate it with the client's network
• Work alongside the existing team (Canada and India) and the in-house designer

Must-have

• 5+ years of frontend development with strong TypeScript and React
• Solid working knowledge of Bitcoin and the Lightning Network: channels, invoices, payments, and how a node relates to a wallet
• Comfortable with Git/GitHub workflows, including forking and maintaining upstream open-source projects
• Able to read an unfamiliar codebase and give an accurate hour estimate for scoped work

Strong plus

• Has built or contributed to a Bitcoin/Lightning wallet or node interface, such as RaspiBlitz, RTL, ThunderHub, Umbrel, Zeus, BTCPay Server or Start
• Experience with LND or Core Lightning APIs
• Broader blockchain development experience
• UI/design skills

Engagement details

• 25+ hours/week, with an initial 3-month contract and long-term intent
• Remote, open to any location