Principal Software Engineer
QuoteWell
Node.jsReactTypeScript
Senior Staff Software Engineer
Mozilla
full-time
Posted on:
Location Type: Remote
Location: Remote • 🇺🇸 United States
Visit company websiteSalary
💰 $194,000 - $283,000 per year
Job Level
Senior
Tech Stack
CloudFirewallsGoGRPCJavaKubernetesNode.jsOpen SourcePythonRubyRustTerraform
About the role
- Build ultra-low-latency request/response enforcement pipelines capable of 10k+ Requests Per Second (RPS) per node.
- Implement real-time input/output validation, multi-turn monitoring, and adversarial pattern detection.
- Engineer flexible deployment options, including reverse proxy, sidecar, SDK, edge, and on-premises.
- Evaluate and recommend open source and custom software solutions.
- Integrate real-world threat intelligence into adaptive rules and signatures.
- Develop semantic attack detection, evasion handling, and contextual monitoring.
- Enable configurable enforcement actions: block, redact, replace, or log-only.
- Deliver compliance-ready logging, alerting, and severity scoring pipelines.
- Support integrations with SIEM/SOAR, SOC tools, and regulatory frameworks (HIPAA, PCI-DSS, GDPR, SOC2, ISO, NIST).
- Provide SDKs and APIs for rapid developer adoption.
- Achieve P95 <15ms latency, 99.99% availability, and linear scalability under load.
- Build distributed infrastructure optimized for edge and cloud environments.
- Partner with security researchers and product leaders to define the roadmap.
- Mentor engineers and help grow a high-performing technical team.
Requirements
- 15+ years proven experience in backend systems and distributed infrastructure.
- Deep understanding of cloud-native deployments (Kubernetes, Helm, Terraform, multi-cloud).
- Strong programming skills in at least two of: Python, Go, Rust, Ruby or Java.
- Experience with inline enforcement systems, firewalls, or high-performance APIs.
- Experience in Security Product Development
- Familiarity with AI/ML security challenges (adversarial ML, content filtering, prompt injection).
- Expertise in leveraging AI tools in the development workflow.
- Nice to have:
- Contributions to open-source AI safety or security projects.
- Experience with streaming protocols (gRPC, WebSocket, SSE) and edge/CDN deployments.
- Background in adversarial ML research, red-teaming, or compliance-focused security.
Benefits
- Generous performance-based bonus plans to all eligible employees - we share in our success as one team
- Rich medical, dental, and vision coverage
- Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
- Quarterly all-company wellness days where everyone takes a pause together
- Country specific holidays plus a day off for your birthday
- One-time home office stipend
- Annual professional development budget
- Quarterly well-being stipend
- Considerable paid parental leave
- Employee referral bonus program
- Other benefits (life/AD&D, disability, EAP, etc. - varies by country)
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard skills
PythonGoRustRubyJavaKubernetesHelmTerraformgRPCWebSocket
Soft skills
mentoringteam leadershipcollaborationcommunicationproblem-solving
