Senior Software Engineer (Platform & Infrastructure)

Senior Software Engineer (Platform & Infrastructure)

Simbian® is building an Agentic AI platform for cybersecurity. Founded by repeat successful security founders, we have gathered an excellent cohort of employees, partners, and customers. Our mission is to solve security using AI and our core values are excellence, replication, and intellectual honesty. Our promise is to make Simbian the best workplace of your career, and we believe a small group of thoughtful, passionate people can make all the positive differences in the world. Our AI Agents automate security operations and provide our customers with 10x leverage. Our customers include some of the world's largest companies. Our initial use cases include: AI-based SOC alert triage and investigation AI-based Threat Hunting AI-based Penetration Testing

You will design and build the foundational infrastructure powering our agentic security platform — secure multi-tenant systems, distributed services, scalable execution layers, and the internal platform capabilities that allow our AI agents to operate reliably in production environments. You'll work closely with founders, product, AI, and security engineering teams to build systems that are secure, observable, resilient, and scalable from day one. This role is ideal for engineers who think deeply about distributed systems, platform architecture, reliability, infrastructure, and backend scalability.

In your first few months, you will:

• Own end-to-end design and delivery of platform capabilities
• Build and scale distributed backend services powering AI agents and customer workflows
• Improve authentication, authorization, and tenant isolation across the platform
• Design infrastructure and observability systems for reliability at scale
• Deploy and operate production-grade systems with strong ownership beyond launch
• Collaborate cross-functionally with engineering, product, customer-facing teams, and leadership to shape platform architecture and engineering standards

What You'll Work On

• Platform & Distributed Systems
• Infrastructure & Reliability Engineering
• Security & Access Systems
• AI Infrastructure Enablement

You'll Thrive Here If You

• Think deeply in systems and architecture
• Enjoy solving ambiguous engineering problems from first principles
• Care about reliability, maintainability, scalability, and elegant abstractions
• Like owning systems end-to-end, including production operations
• Understand the tradeoffs involved in distributed systems and platform design
• Enjoy reading RFCs, architecture docs, and learning new technologies

Requirements Must Have

• 6+ years of strong backend or platform engineering experience
• Strong understanding of distributed systems fundamentals
• Experience designing and operating microservices at scale
• Experience with authentication and authorization systems (OAuth, RBAC, JWT, SSO, IAM, etc.)
• Strong knowledge of cloud infrastructure (AWS/GCP/Azure), containers, and CI/CD systems
• Experience with observability tooling, monitoring systems, logging, tracing, and production debugging
• Familiarity with asynchronous systems, queues, event streams, and workflow orchestration
• Strong coding experience in Python, Go, Java, or Node.js
• Ownership mindset — ability to take systems from concept → production → scale

Bonus / Great to Have

• Experience working on platform engineering or internal developer platforms
• Experience with Kubernetes, Kafka, OpenTelemetry, Prometheus, Grafana, or similar tooling
• Experience building multi-tenant SaaS platforms