Senior Software Development Engineer, Leo Security at Amazon
Bellevue, WA
$168,100–$227,400from the description
Aug 14, 2026
Bellevue, WA
Sep 25, 2026
What this job asks for AI summary
A founding senior software engineer role on a new security engineering and R&D team protecting the ground infrastructure and manufacturing operations behind Amazon's Project Kuiper satellite constellation. The core deliverable is a neuro-symbolic reasoning platform that combines LLM agents, a knowledge graph, and a real-time asset state store to automate incident response, threat analysis, and detection authoring over a high-throughput streaming pipeline. The ideal candidate has deep distributed systems experience and is comfortable owning architecture decisions in a high-consequence, security-critical environment.
Senior level · 5+ years · Bellevue, WA · Full-time
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
Why we read it this way (7)
The role sits at the intersection of security platform engineering and distributed systems software development. SOC 15-1252 (Software Developers) is the primary classification because the core work is building and shipping a production platform; 15-1212 (Information Security Analysts) is a credible runner-up given the security mission and threat-analysis automation.
Export control language requires candidates to be US citizens, nationals, permanent residents, refugees, or asylees — not a formal security clearance gate, so clearance is marked None, but this is a meaningful hiring constraint.
The posting lists 'Bachelor's degree in computer science or equivalent' under Preferred Qualifications only, so degree requirement is not hard-gated.
The base salary range ($168,100–$227,400/year) is stated for Bellevue, WA; total compensation also includes sign-on payments and RSUs per the posting.
Graph database experience (Neptune, Neo4j) and LLM/agent framework experience appear under Preferred Qualifications and are marked accordingly.
Performance optimization specifics (SIMD, cache coherence, lock-free/zero-copy designs) are listed under Basic Qualifications; these are captured under the broader 'performance optimization' and 'multi-threading' skills rather than as separate entries since they describe facets of the same requirement.
Ignored 4 non-technology phrase(s) as skills (responsibilities/concepts, not named tools): software development, real-time stream processing, performance optimization, multi-agent orchestration.
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