# Senior Software Engineer, Enterprise AI Platform

**Company:** [OpenArt](https://hotfix.jobs/companies/openart)
**Location:** San Carlos, CA
**Role:** Fullstack Engineering
**Salary:** From $500k/yr
**Experience:** 5+ years
**Skills:** Full-Stack Development, System Design, Data Modeling, APIs, Multi-Tenancy, RBAC, Sso/Saml, Audit Logging, Cloud Architecture, Observability, React, Next.js, Stripe, SOC 2
**Posted:** 2026-09-10

> Build the enterprise platform for an AI creative product, spanning workspaces, permissions, billing, security, and customer-facing administration. Requires 5+ years of full-stack experience, strong platform and system-design skills, and comfort owning systems from 0 to 1.

## Job Description

## Responsibilities
- Design and build enterprise platform primitives, including organizations, workspaces, roles, permissions, SSO/SAML, and audit logging.
- Build usage-based billing, invoicing, and payment infrastructure for self-serve and enterprise procurement workflows.
- Improve platform security and reliability through access control, data isolation, observability, scalability, and compliance groundwork.
- Design scalable backend architectures and APIs for multi-tenant, team-based usage patterns.
- Build polished React/Next.js interfaces for administration, billing, and workspace management.
- Translate customer, sales, and security-review requirements into shipped platform features.
- Evaluate build-versus-buy decisions for billing, authentication, and compliance tooling.
- Establish enterprise engineering practices as the first hire in the function and help shape the future team.

## Requirements
- 5+ years of full-stack engineering experience shipping and owning production systems at scale.
- Strong system design and data modeling skills, including APIs, permission models, multi-tenancy, and data isolation.
- Hands-on experience with infrastructure and platform work, such as cloud architecture, observability, scaling, or reliability engineering.
- Experience using AI-assisted coding tools such as Claude Code, Codex, or Cursor.
- Strong B2B product sense and communication skills, including the ability to participate in customer security reviews and sales calls.

## Nice to Have
- Experience with payments or billing systems, including subscriptions, usage-based billing, invoicing, and disputes.
- Experience with SSO/SAML, RBAC, audit logging, SOC 2, or GDPR groundwork.
- Experience building for enterprise customers and navigating procurement or security-review cycles.
- Startup experience or ownership of a large product surface from 0 to 1.

## Compensation and Benefits
- Total compensation of $500k+ including base salary, bonus, and equity.
- Meaningful equity ownership.
- High-autonomy, high-growth environment.
- Visa sponsorship available.

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