Senior Backend Engineer (B2B Contract)

<h3>Description</h3> <p>OX Security is looking for a Senior Backend Engineer to help build the infrastructure that secures the world’s software supply chains. You'll work side by side with top-tier engineers, shipping high-performance, secure systems at scale. This role is perfect for someone who thrives in fast-moving environments, loves solving deep technical challenges, and wants their work to matter.</p> <h3>Responsibilities</h3> <p><strong>What You’ll Be Doing</strong></p><ul><li>Design and implement robust backend systems and APIs to support security solutions.</li><li>Collaborate with frontend developers, product managers, and other stakeholders to define system architecture and requirements.</li><li>Optimize application performance, scalability, and security through code reviews and best practices.</li><li>Troubleshoot and resolve issues in existing applications and services with minimal downtime.</li><li>Lead and mentor junior engineers, providing guidance and support in their development efforts.</li><li>Conduct regular system evaluations and contribute to continuous improvement initiatives.</li></ul> <h3>Requirements</h3> <p><strong>What We’re Looking For</strong></p><ul><li>Bachelor's degree in Computer Science or a related field.</li><li>A minimum of 5 years of experience in backend development with a focus on scalable applications.</li><li>Proficiency in Node.js</li><li>Strong experience with database systems, including SQL and NoSQL databases.</li><li>Familiarity with cloud services and microservices architecture.</li><li>Excellent problem-solving skills and a passion for clean, maintainable code.</li></ul>