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Reap

Senior Software Engineer/Tech Lead, Web3 Initiatives

Reap

. Design and deploy production-grade smart contracts across multiple blockchains (Solana, Ethereum, and others as the business expands) .

Posted 4/21/2026full-timeRemote • 🌎 Anywhere in the WorldSeniorWebsite

Tech Stack

Tools & technologies
AWSCloudJavaScriptNode.jsRustSolidityTypeScriptWeb3

About the role

Key responsibilities & impact
  • Design and deploy production-grade smart contracts across multiple blockchains (Solana, Ethereum, and others as the business expands)
  • Own CaaS web3 capabilities — build secure, scalable blockchain systems for card-as-a-service, asset management, and financial use cases
  • Lead wallet infrastructure discovery and development — architecting wallet solutions that support Reap's product roadmap
  • Build backend services (Node.js/TypeScript) to support on-chain functionality, working closely with backend engineering
  • Collaborate with product and business teams to translate ideas into clear, secure technical execution
  • Contribute to architecture decisions, code reviews, and security audits
  • Leverage AI tools and modern development practices to drive engineering efficiency and velocity

Requirements

What you’ll need
  • 5-8+ years in software development, ideally with backend engineering experience in Node.js/TypeScript and AWS (or similar cloud infrastructure)
  • 3+ years building smart contracts on Solana (Rust) or Ethereum (Solidity), with strong expertise in at least one and openness to developing in a multi-chain environment
  • Experience building wallet infrastructure (hot/cold wallet)
  • Strong product sense and ability to take end-to-end ownership of technical initiatives
  • Demonstrated use of AI tools to boost development efficiency
  • Clear communication, collaboration, and commitment to code quality
  • Fintech sector experience ideal

Benefits

Comp & perks
  • A high-impact role in a rapidly growing fintech startup
  • Flexible hybrid work environment with a global, collaborative team
  • Insurance coverage after probation
  • Reap Card stipend
  • Use of AI tools at work — and the space to learn, experiment, and grow with them
  • A culture of innovation, inclusion, and continuous learning

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
smart contractsNode.jsTypeScriptSolidityRustbackend engineeringcloud infrastructurewallet infrastructureAI toolsCaaS
Soft Skills
clear communicationcollaborationcommitment to code qualitystrong product senseend-to-end ownership