Senior Customer Engineer - AppSec

Harness
Mexico City, Mexico City, Mexico; Tandil, Buenos Aires Province, ArgentinaPosted 9 March 2026

Job Description

Harness is the AI Software Delivery Platform company, led by technologist and entrepreneur Jyoti Bansal (founder of AppDynamics, acquired by Cisco for $3.7B). Harness has raised approximately $570M in funding and is valued at $5.5B, backed by leading investors including Goldman Sachs, Menlo Ventures, IVP, Unusual Ventures, Citi Ventures, and more. As AI accelerates code creation, the real bottleneck has shifted to everything after the code – testing, deployments, application security, reliability, compliance, and cost optimization. Harness brings AI and automation to this “outer loop,” helping teams ship software faster while maintaining security and governance throughout the entire software delivery lifecycle. Powered by Harness AI and the Software Delivery Knowledge Graph, the Harness Platform applies deep context and intelligent automation across the software delivery lifecycle with governance and policy-driven controls embedded throughout the platform. Over the past year, Harness powered over 185M deployments, 82M builds, 18T flag evaluations, 8M security scans, 9.1B optimized tests, 3T protected API calls, and helped manage $2.8B in cloud spend — enabling customers like United Airlines, Morningstar, and Choice Hotels to accelerate releases by up to 75%, reduce cloud costs by up to 60%, and achieve 10x DevOps efficiency. With a global team across 14 offices and 25 countries, Harness is shaping the future of AI software delivery — and we’re looking for exceptional talent to help us move even faster. Position Summary We are seeking motivated, highly technical and customer-centric Customer Engineer - AppSec to join our Customer Success team. In this role, you will play a crucial role in implementing and integrating Harness platform and AppSec modules and providing expert technical guidance and best practices to help customers optimize their use and achieve maximum value from our platform. Our team is small, collaborative, and deeply motivated — we work at the intersection of technology, security, and business, and we bring curiosity and rigor to a wide range of challenges. You will have the opportunity to contribute meaningfully to a rapidly growing company while helping customers harness the power of our AI-enabled DevSecOps platform to build and deliver software securely and efficiently — including protecting AI applications from emerging threats. We prioritize psychological safety, mentorship, and continuous learning. Whether you're coming from engineering, architecture, consulting, or security — we want to hear from you. About the role Provide hands-on technical guidance and consulting throughout the customer lifecycle, including platform configuration, integration support, and custom solution development. Troubleshoot complex technical issues, collaborate with engineering teams, and develop creative solutions to customer challenges. Understand customer requirements and architect solutions that align with their business objectives for a successful onboarding and implementation of the Harness platform. Assist customers in integrating Harness portfolio of application security and protection modules into their Security and DevSecOps workflows. Create and maintain technical documentation, including implementation and best practice guides. Build trusted relationships with customers, developing a solid understanding of their technical environments, workflows, and goals — while partnering with cross-functional team members on strategic account decisions. Educate and train customers to become champions of Harness. Develop and maintain a deep understanding of Harness platform and AppSec modules as well as general skillset across AI applications and security, DevOps, SecOps, application security, cloud architectures, networks and infrastructure disciplines and industry trends to effectively support, educate and advise customers. Assist in Harness Community and build out advanced technical knowledge base and referen ... (truncated, view full listing at source)
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