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  • Senior Blockchain Developer
    Senior Blockchain Developer
    1 month ago
    $240000–$280000 yearly
    Full-time
    Manhattan, New York

    Senior Blockchain Developer Remote | Full-Time | $240,000–$280,000 USD Build the Future of Web3 Are you passionate about blockchain technology and excited by the opportunity to build products that can transform industries? We're looking for a Senior Blockchain Developer to join our growing team and help create next-generation solutions across Web3, digital assets, tokenized real estate, decentralized finance (DeFi), and smart contract infrastructure. This is more than just another engineering role. You'll have the opportunity to shape technical strategy, influence product direction, and work on innovative projects that push the boundaries of blockchain technology. If you're a builder, problem solver, and blockchain enthusiast who thrives in a fast-paced environment, we'd love to hear from you. Responsibilities • Design, develop, test, and deploy secure smart contracts on Ethereum and EVM-compatible blockchains., • Build and maintain scalable decentralized applications (dApps) and Web3 platforms., • Develop backend services, APIs, and blockchain integrations using Node.js and TypeScript., • Collaborate with product managers, designers, and engineers to deliver high-quality features and products., • Architect blockchain solutions that prioritize scalability, security, and performance., • Conduct code reviews and provide technical mentorship to junior and mid-level developers., • Integrate wallets, token standards, payment systems, and third-party blockchain services., • Monitor, troubleshoot, and optimize production blockchain applications., • Implement security best practices and participate in smart contract audits and risk assessments., • Improve development workflows, CI/CD pipelines, testing frameworks, and deployment processes., • Research emerging blockchain technologies and evaluate new tools, protocols, and frameworks., • Contribute to technical documentation, architecture planning, and engineering standards., • Participate in technical discussions and help drive long-term product and technology strategy., • Work closely with cross-functional teams to ensure successful product launches and ongoing improvements. Required Qualifications • 5+ years of professional software engineering experience., • 3+ years of hands-on blockchain development experience., • Strong expertise in Solidity and Ethereum smart contract development., • Experience building production-grade applications using React, TypeScript, and Node.js., • Strong understanding of blockchain architecture, decentralized systems, and Web3 technologies., • Experience with ethers.js, viem, wagmi, or similar Web3 libraries., • Knowledge of token standards including ERC-20, ERC-721, and ERC-1155., • Experience with REST APIs, GraphQL, databases, and cloud infrastructure., • Strong understanding of software design patterns and scalable architecture., • Excellent problem-solving, communication, and collaboration skills. Nice-to-Have Qualifications • Experience building DeFi, NFT, RWA, or tokenization platforms., • Familiarity with Layer 2 scaling solutions and cross-chain technologies., • Experience conducting or supporting smart contract security audits., • Knowledge of AWS, Docker, Kubernetes, and infrastructure automation., • Experience working in startups or high-growth technology companies., • Open-source contributions within the blockchain ecosystem.

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  • Field Sales Representative (B2B
    Field Sales Representative (B2B
    1 month ago
    $20–$22 hourly
    Part-time
    Manhattan, New York

    Field Sales Representative (B2B) – $20/hr | Flexible Hours Location: Harlem & Manhattan, NYC Pay: $20/hour (20 hours for 1 week) + Performance Bonuses About Us Xhibitur Rewards helps local businesses increase repeat customers with a simple QR code-powered loyalty program. We're looking for an energetic Field Sales Representative to introduce our free pilot program to local businesses. Responsibilities • Visit assigned businesses in Harlem and surrounding neighborhoods., • Ask to speak with the owner, manager, or decision maker., • Introduce Xhibitur Rewards and our free pilot program., • Perform a quick product demo using your phone or tablet when needed., • Sign businesses up for the free trial or schedule a follow-up meeting., • Collect owner/manager contact information., • Leave business cards or marketing materials when appropriate., • Record daily visits, conversations, and results. Schedule • Monday–Friday, • 10:00 AM – 2:00 PM, • 20 total hours Qualifications • Friendly and confident communicator., • Comfortable approaching local businesses., • Sales, customer service, or retail experience is a plus., • Reliable, self-motivated, and organized., • Smartphone required. Daily Goals • Visit 20–25 businesses., • Speak with decision makers., • Complete product demos., • Generate free trial signups and qualified follow-up meetings. This is a great opportunity for someone who enjoys meeting people, representing a growing startup, and helping local businesses succeed. High performers may have the opportunity for future sales work as we expand.

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