Senior Full-Stack / Platform Engineer (LATAM)
Remote
EXPIREDRemoteContractSenior Level
ContractSenior Level
Job Summary
Conduct a deep technical assessment of an existing multi-tenant SaaS marketplace platform by reviewing the frontend and backend codebase, database schemas, and API integrations. Evaluate code quality, maintainability, and security controls while identifying cross-tenant data-exposure paths and scalability constraints. Document evidence-backed findings with severity levels and recommended remediation to support the Solution Architect in estimating complexity for the subsequent execution phase. Work directly with the AI Engineer to assess test coverage, CI/CD quality gates, and operational readiness during U.S. business hours.
Required Qualifications
- 7+ years of hands-on full-stack software engineering experience
- Strong proficiency in React and TypeScript
- Strong experience with PostgreSQL, SQL and relational data modelling
- Experience with modern serverless/backend platforms and API development
- Strong understanding of authentication, authorization and multi-tenant SaaS architecture
- Practical experience with database Row-Level Security or equivalent data-access controls
- Strong REST API and integration experience
- Experience with CI/CD pipelines and GitHub-based development workflows
- Strong debugging, code-review and root-cause-analysis capability
- Experience assessing production applications for scalability, security and maintainability
- React + TypeScript
- PostgreSQL and strong SQL/data modelling
- API and integration engineering
- Authentication, authorization and multi-tenancy
- Strong code-review and troubleshooting capability
- CI/CD and engineering quality practices
- Ability to assess rather than immediately rewrite existing systems
- Ability to work during U.S. business hours
Desired Qualifications
- Hands-on Supabase experience including Postgres, Auth, Storage, Realtime and Edge Functions
- Experience with Vite, TanStack React Query, Tailwind or similar modern frontend frameworks
- Experience with Cloudflare Pages
- Exposure to Mapbox, messaging platforms and third-party API integrations
- Experience with marketplace, logistics, disaster-response or workflow platforms
- Experience supporting AI-enabled applications and familiarity with MCP / agent integrations
- Exposure to public-sector or regulated application environments
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