Backend Software Engineer (Mid-Senior)

This role is based in Palo Alto, California, and follows a hybrid work model. If you’re excited about helping build a large-scale SaaS platform at an early-stage company and the qualifications below align with your background, we’d love to connect! About Us AI coding is the largest use case of enterprise AI adoption today, as is evident from the success of Anthropic on Claude Code, Cursor’s $60B exit to SpaceX, and Cognition’s $48B valuation. The bottleneck now has moved from code generation to security and safety - AI agents write code faster than any team can review it, and over 65% of the lines of code produced by them are insecure. Vulnerabilities are piling up 16x faster than companies can fix them, and adversaries are able to exploit these new vulnerabilities within hours. AURI by Endor Labs closes that gap. It runs inside the harness where coding agents work, through hooks, skills and MCP, so the controls sit outside the model and every agent action is visible. Underneath is our patented code context graph, which maps code, open source, containers and infrastructure. It shows which vulnerabilities can actually be reached and exploited, then delivers fixes that won’t break the application. Security teams get evidence instead of noise, and developers get fixes instead of tickets. The companies building AI trust us to secure it - our customers include OpenAI, SpaceX, DoorDash, Dropbox, Atlassian, MongoDB, Snowflake, Robinhood and Peloton to name a few. Endor Labs is the third company from Founder & CEO Varun Badhwar, who built Prisma Cloud, the platform that helped define cloud security, from $0 to $300M ARR at Palo Alto Networks. We’ve raised $163M from Lightspeed, Coatue, DFJ Growth, Salesforce Ventures and Dell Technologies Capital. Software runs everything around our lives today - banking, hospitals, airports and power grids. AI now writes more of it every day, and our mission is to make sure the world can trust that software. Come build that future with us. How You'll Make an Impact • Join Our Cutting-Edge Backend Team: Dive into the heart of innovation by working on a state-of-the-art distributed system with a sophisticated monorepo architecture. • Own Core Product Functionality: Own the core functionality at the heart of Endor’s AppSec platform. Design and deliver features that secure source code end to end, from IDE to deployment, fueling the next generation of AI-driven software development. • AI Code security - Be at the forefront of securing customer code with bleeding edge AI code security solutions. • Elevate Core Services : Drive the development and optimization of vital core services like our API Gateway and API servers, ensuring robust and scalable infrastructure. • Maintain diverse scan environments - Enhance our dynamic cloud scan platform by supporting the ever-growing build and tool chain requirements. • Innovate with Autonomy : Embrace the freedom to design and build top-tier tools that will be leveraged across all teams at Endor, making a significant impact on our operations. • Champion Observability : Apply best practices in observability to ensure our products and platforms achieve exceptional reliability and availability for our users. What We're Looking For • Engineering Expertise : Bachelor’s in engineering and 3-5 years of experience. • Golang Mastery : Showcase ~3 years of experience in Golang programming, with a deep focus on microservices and distributed architecture, to drive our cutting-edge solutions. • Build tools and tool chains familiarity - How different tool chains like Maven, pip, npm work to provide a seamless scan experience for our customers. • Scalable Systems : Bring your experience with scalable distributed systems, including microservices, domain-driven design,