Senior Staff Software Engineer (AppSec)

# Senior Staff Software Engineer (AppSec), Tel Aviv

We are looking for a Senior Staff Software Engineer to join the AppSec engineering team in Armis R&D and lead it from the inside.

The team builds Armis Centrix for Application Security, an AI-native AppSec product built from the ground up over the past year and now growing into a core product line. You get the best of both worlds: a small, autonomous team that owns its product end to end, backed by the data, expertise, and stability of Armis and ServiceNow engineering. If you love taking a product from its first customers to enterprise scale, own outcomes end to end, and raise the bar for the people around you, this is for you.

## What You'll Do

- **Lead From the Code:** Be a technical lead in the team, hands-on in architecture, design, and the critical paths of the codebase, with the accountability that comes with it.
- **Build Agentic AppSec:** Design and build LLM-based agents and pipelines that analyze real-world codebases at scale: orchestration, tool use, context engineering, and the deterministic components that do what models shouldn't.
- **Make AI Trustworthy:** Own evaluation-driven development: the evaluation harness, golden datasets, regression gates in CI, and cost and latency tracking, so every pipeline change is measured before it ships.
- **Own the Backend & AI Architecture:** Design robust, multi-tenant microservice cloud environments with security by design as the default.
- **Run the Team's Rhythm:** Drive planning, estimation, and delivery of commitments; turn designs into clear, estimated work that engineers own.
- **Grow People:** Mentor, review designs and code, and set engineering standards, with a growth path into formal team leadership as the team scales.
- **Engage Beyond the Code:** Work directly with product, customers, support, sales, and leadership to gather real-world insight, unblock fast, and align technical direction with the business.
- **Collaborate Globally:** Work closely with engineers and stakeholders across Israel, the US, Canada, and India.

## Qualifications

- 8+ years of deep backend/systems experience, strong Python, and real production experience in a multi-tenant microservice cloud environment
- Must: hands-on experience building LLM-based agents or agentic pipelines in production: orchestration, tool use, context engineering, model selection, cost and latency at scale
- Must: hands-on experience evaluating them: an evaluation harness, golden datasets, or benchmark suites you built or owned, and you can explain how you knew a change made the system better rather than different
- A track record of owning outcomes end to end, from early stage to scale, including a commitment that went wrong and what you did about it
- A security engineering mindset: tenant isolation, access control, and secure design are non-negotiable to you
- Technical leadership experience as a tech lead or team lead, with the intent to keep your hands in the code. Formal management experience is a plus
- An All-Around Player: independent, execution-focused, and happy to build whatever it takes
- Excellent English for working effectively across time zones