Staff Blockchain Developer – Security Systems at Fiverr

Company Overview Fiverr's mission is to revolutionize how the world works together. We exist to empower entrepreneurs and businesses everywhere to build their dream, at any budget. Through our platform, millions of businesses can access freelancers with the skills they need to get work done, driving incredible value and growth. Fiverr embraces a remote-first culture that values flexibility, collaboration, and results. We believe that talent can be found anywhere, and we are committed to building a diverse and inclusive team that spans across the United States. We provide our remote employees with the resources and support they need to thrive, including a home office stipend, comprehensive benefits, and opportunities for professional development. Our team is connected through virtual collaboration tools and regular virtual team-building activities. Position Summary Fiverr is seeking a highly motivated and experienced Staff Blockchain Developer to join our Security Systems team. This is a fully REMOTE position, allowing you to work from anywhere in the USA. In this role, you will be responsible for designing, developing, and implementing blockchain-based security solutions for Fiverr's platform. You will collaborate with other engineers, security experts, and product managers to ensure the integrity, confidentiality, and availability of our systems and data. Key Responsibilities Design and develop blockchain-based security solutions for Fiverr's platform. Implement smart contracts and decentralized applications (dApps) to enhance security measures. Collaborate with security engineers to identify and mitigate potential security vulnerabilities. Conduct code reviews and ensure adherence to coding standards and security best practices. Contribute to the development of security policies and procedures. Participate in virtual team meetings and contribute to technical discussions. Maintain thorough documentation of designs, code, and deployment procedures. Stay up-to-date with the latest trends and technologies in blockchain security. Participate in occasional virtual team-building activities and company-wide events. Required Qualifications Bachelor's degree in Computer Science or a related field. 5+ years of experience in software development. 3+ years of experience in blockchain development, specifically in security applications. Strong understanding of blockchain technologies, including consensus mechanisms, smart contracts, and cryptography. Proficiency in at least one blockchain development language (e.g., Solidity, Rust). Experience with decentralized application (dApp) development. Solid understanding of security principles and best practices. Excellent problem-solving and analytical skills. Ability to work independently and collaboratively in a remote environment. Excellent communication and interpersonal skills. Must be authorized to work in the United States. Technical Requirements As a REMOTE employee, you are expected to have: A dedicated home office space conducive to productive work. A reliable high-speed internet connection (minimum 50 Mbps download and 10 Mbps upload). A modern computer with sufficient processing power and memory. A headset with a microphone for virtual meetings. Must be available for meetings and collaboration during core business hours (Eastern Time Zone preferred). Desired Skills Experience with security audits and penetration testing of blockchain applications. Familiarity with cloud platforms (e.g., AWS, Azure, GCP). Knowledge of containerization technologies (e.g., Docker, Kubernetes). Contributions to open-source blockchain projects. Experience with various blockchain platforms (e.g., Ethereum, Hyperledger Fabric). Compensation & Benefits The annual salary range for this REMOTE Staff Blockchain Developer position is $160,000 - $210,000, commensurate with experience and location within the USA. Fiverr offers a comprehensive benefits package to our REMOTE employees, including: Medical, dental, and vision insurance Paid time off (PTO) and holidays 401(k) with company match Home office stipend for equipment and setup Professional development opportunities Virtual team-building activities and social events Flexible working hours How to Apply If you are a passionate and talented blockchain developer looking for a challenging and rewarding REMOTE opportunity, we encourage you to apply. Please submit your resume and a cover letter highlighting your relevant experience and why you are a good fit for this position through our online application portal. Virtual onboarding will be provided to ensure a smooth transition into the Fiverr team. We look forward to hearing from you!