Lightning Developer

Stack

Responsibilities

• ▹Own and improve Lightning Network and Bitcoin payment infrastructure, from everyday upgrades and fixes to larger improvements across the stack
• ▹Work hands-on with Lightning implementations (LND, CLN, or similar), payment channels, and liquidity management
• ▹Analyze how Lightning payments flow, including forensic work after incidents, and build monitoring and policies
• ▹Strengthen the security of crypto systems: key management, HSMs, and safeguarding funds
• ▹Help get crypto transaction accounting right, working with the finance team
• ▹Evaluate and integrate new Bitcoin and Lightning tech as the space evolves
• ▹Get new payment protocols into production, from payjoin to nostr-based flows
• ▹Build the Lightning side of the agentic commerce work
• ▹Ship with product and design, and contribute to internal libraries and open-source tooling

Requirements

• ▹Several years building software professionally, with a track record of shipping real things
• ▹AI is part of how you build (Claude Code, Codex, Cursor, or similar) - non-negotiable
• ▹Deep understanding of the Lightning Network protocol and Bitcoin fundamentals
• ▹Hands-on experience with at least one Lightning implementation (LND, CLN, Eclair, or LDK)
• ▹Strong with the backend stack, Node.js and TypeScript, and comfortable working in Python
• ▹Crypto-native, follows where the space is headed
• ▹Self-driven, spots opportunities and pushes them forward

Nice to have

• ▹Contributed to open-source Lightning or Bitcoin projects
• ▹Experience with payment channel management and liquidity optimization
• ▹Runs their own node
• ▹Hands-on with newer Lightning and Layer 2 tech
• ▹Experience building payments at scale

Soft skills

What we offer

• ▹Fully remote since day one, team across 30+ countries
• ▹Option to get paid in crypto
• ▹No unnecessary meetings
• ▹Twice-a-year in-person team meetups

About the company

Bitrefill has worked since 2014 to make internet money just work, routing payments for over a million customers across 180 countries, with a fully remote team across 30+ countries.