Senior Blockchain Developer

4 hours ago

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Paxful

WebsiteLinkedInAll Job Openings

bitcoin • buy bitcoin • sell bitcoin • accept bitcoin • cryptocurrency

51 - 200 employees

Founded 2015

💳 Fintech

💸 Finance

₿ Crypto

Description

•Paxful is the world’s largest people-powered marketplace, connecting over 14 million users across 140+ countries to move, save, and store money - even without a bank account. •The Senior Blockchain Developer is responsible for designing, building, and maintaining robust blockchain-based systems that power Paxful’s platform. •This role requires deep expertise in blockchain technologies, hands-on experience with API integrations (e.g., BitGo, Fireblocks), and the ability to work with advanced blockchain solutions such as Solana Smart Contracts. •You will play a critical role in building secure wallet systems, optimizing transaction processing, and integrating new blockchain features to support Paxful’s expanding ecosystem.

Requirements

•5+ years of experience in blockchain development or related fields. •Extensive experience with Bitcoin, UTXOs, multi-signature wallets, and Layer 2 solutions like Lightning Network. •Proficiency in blockchain programming. •Strong knowledge of Python, Go, or Rust for smart contract development. •Experience with API integrations for custodial and non-custodial wallets. •Hands-on experience with BitGo, Fireblocks, or similar vendors. •Proficiency with smart contract development and deployment. •Hands-on experience working with Solana Smart Contracts using Anchor or similar frameworks. •Deep understanding of blockchain security best practices. •Familiarity with cryptographic techniques, secure wallet implementation, and transaction validation.

Benefits

•We encourage a remote-first approach for geographically distributed teams, being open to skilled professionals from around the world. •Competitive salary •Fully remote work environment •Flexible working hours with a 4-hour overlap in Eastern Time (EST) •Opportunity to work with cutting-edge technologies on impactful projects •Collaborative, innovative, and supportive work culture •Opportunity to mentor and lead a team of talented engineers •Professional growth and development opportunities