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Customer Success Engineer

Job in Seattle, King County, Washington, 98127, USA
Listing for: Casco (YC X25)
Full Time position
Listed on 2026-03-01
Job specializations:
  • IT/Tech
    Technical Support, Cybersecurity
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below

We're looking for a Customer Success Engineer who is obsessed with making our customers’ software secure. You will be the technical bridge between our customers and our security and engineering teams. This isn't a traditional customer success role where you just close tickets. You are a security success engineer, a trusted advisor for all things application security. You'll manage the onboarding lifecycle, answer deep technical questions, and ensure our customers are getting maximum value from Casco.

What

You’ll Actually Do
  • Own the Onboarding Journey:
    You will guide new customers from "signed contract" to "fully operational," ensuring their first and every future pentest experience is seamless
  • Manage Concurrent Engagements:
    You're always staying on top of multiple customer requests, deployments, and feedback loops simultaneously. You ensure nothing falls through the cracks
  • Be the Security Expert:
    Customers will ask complex security questions. You need to answer them with confidence, explaining how our agents interact with their infrastructure and helping them interpret findings
  • Triage and Troubleshoot:
    You are the first line of defense for technical FAQs. You'll solve problems directly when you can and know exactly when to elevate to the core engineering team
  • Advocate for the Customer:
    You'll gather feedback from the field and work directly with our product and engineering teams to shape the future of the platform
What We’re Looking For Must-Haves
  • Security Mindset:
    You don't just know what "XSS" or "RCE" stands for. You understand the implications. You have a strong foundation in security principles and can speak the language of offensive security engineers
  • Project Management:
    You thrive in chaos and can organize it. You have a proven track record of managing multiple stakeholders and complex timelines without losing your cool
  • Technical Proficiency:
    You are comfortable reading documentation, understanding API integrations, and troubleshooting software issues. You might not write the code, but you can definitely read the logs
  • Excellent Communication:
    You can explain complex security concepts to a CTO, a CISO, and a non-technical stakeholder in the same meeting
  • Startup Grittiness:
    You're ready to use AI to build automation where none exists and adapt quickly as demand scales
Nice-to-Have
  • Security

    Certifications:

    Bonus points for CompTIA Security+, CEH, GSEC, or similar
  • Experience with AI/LLMs:
    You've automated away tactical work with AI, so you can focus on more strategic work
  • Previous CS/Sales Engineering

    Experience:

    You've done this before in a B2B SaaS environment
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