Senior Full-Stack Platform Engineer

About the role

Conjoint Inc is seeking a hands-on Senior Full-Stack / Platform Engineer to perform a deep technical assessment of an existing multi-tenant SaaS marketplace platform. The immediate objective is assessment and recommendations, not feature development or remediation.

The engineer will work directly with the Solution Architect and AI Engineer to review the application codebase, database, APIs, security controls, CI/CD, test posture, performance and operational readiness.

Responsibilities

• Perform a detailed review of the frontend and backend codebase, assessing code quality, maintainability, consistency and technical debt.
• Review application architecture against established domain and data-access patterns. Identify code paths that bypass expected platform conventions or security boundaries, and validate findings through code tracing and non-production reproduction where appropriate.
• Review organization- and tenant-scoped data-access patterns and PostgreSQL Row-Level Security (RLS), and identify potential cross-tenant data-exposure paths.
• Review database schemas, migrations, foreign keys, soft deletes and data-integrity patterns. Assess schema-first migration discipline and potential schema drift.
• Review Partner APIs, Edge Functions, webhooks and external integration patterns. Assess API authentication, authorization, error handling and scalability, including whether the current architecture can support an API-centric integration model.
• Identify N+1 queries, over-fetching, indexing gaps, realtime fan-out and Edge Function latency risks. Assess frontend bundle size, code splitting and likely platform scaling constraints.
• Assess unit, integration and security test coverage, including RLS negative-test scenarios.
• Review CI quality gates, including type checking, linting, tests and dependency/security scanning, and identify weak or misleading AI-generated tests.

Requirements

The source listing does not specify requirements.

Datos clave

• The role focuses on assessment and recommendations, not feature development or remediation.
• The platform is an existing multi-tenant SaaS marketplace.
• The review covers code, database, APIs, security controls, CI/CD, tests, performance and operational readiness.