As developers increasingly take on the frontline role in defending the software supply chain, developer-first supply chain security aims to minimize risk, streamline development workflows, foster collaboration, and instill a culture of vigilance. The software supply chain operates similarly to the physical manufacturing supply chain, with layers of code, development efforts, and tools combining to yield a final digital product. Developers play a vital role in maintaining a secure software supply chain by writing secure code, choosing open source packages, selecting containers and base images, remediating vulnerabilities, and building software bill of materials. To promote a culture of security awareness, developers can start shifting left, prioritizing developer-first tools and solutions, and maintaining security policy compliance. The partnership between DevOps and AppSec teams is crucial to enhancing overall supply chain security, with collaboration establishing a robust foundation for integrating security measures into every phase of the SDLC. Snyk provides secure software supply chain solutions and analytics to help secure everything that runs through your build pipeline, offering enterprise analytics, insights, and valuable data to inform decision-making and bolster security measures.