we are looking for

Senior Backend Engineer (Python) Remote Full-time

Our Customer:

Seed-stage company building a security gateway for AI agents, enforcing enterprise-grade access, observability, and compliance for AI tool usage. This role works closely with the gateway team to implement policy and authorization across users, tenants, and tools.

Your Tasks:

Build and maintain the policy and authorization layer for MCP Gateway interactions;
Implement fine-grained access control (per tool, per user, per tenant);
Develop and maintain a TypeScript SDK bridging MCP protocol flows;
Integrate authorization with agent posture, activity monitoring, and observability;
Implement distributed tracing, metrics, and audit logging for compliance;
Collaborate with gateway engineers to ensure consistent enforcement across the platform.

Required Experience and Skills:

5+ years in software engineering, with experience in backend development;
2+ years working with authorization or security systems;
Strong proficiency in TypeScript and Python, including SDK and API design;
Experience with policy engines (CEL, Cedar, OPA/Rego or similar) and production RBAC / ABAC models;
Experience with cloud infrastructure (AWS, containers, IaC, CI/CD);
Familiarity with identity integration (OIDC, OAuth 2.0, SAML) and enterprise IdPs (Okta, Azure AD, Keycloak);
Experience with observability stacks (Prometheus, OpenTelemetry);
English — Upper-Intermediate.

Would Be a Plus:

Rust experience or strong interest in learning Rust (core gateway / policy components);
Hands-on experience with policy engines (CEL, Cedar, OPA/Rego);
Previous work on MCP servers, gateways, or protocol-based systems;
Protocol Buffers and xDS experience;
AWS security services (IAM, Verified Permissions);
Experience implementing security/compliance standards (SOC 2, HIPAA, FedRAMP);
Contributions to open-source authorization or policy frameworks (cel-go, cel-rust, Open Policy Agent);
Startup experience with comfort in high-ambiguity, fast-moving environments.