Senior Full Stack Developer (Typescript + Python)

Full Stack Developer About You You are a Senior Full Stack Developer who thrives inside real, messy, production systems, not greenfield prototypes. You have a track record of shipping features across the full stack, React/TypeScript on the frontend, Python/FastAPI or Node.js on the backend, and you know how to make dense, data-heavy interfaces feel fast and usable at real-world scale. You're energized by working inside an existing architecture: reading the code that's already there, understanding why it was built that way, and making sound feature-level decisions without needing to redesign it from scratch. You use AI coding assistants daily, not as a shortcut but as a force multiplier, and you know how to validate what they generate. Above all, you care about outcomes: secure, well-built features that hold up in a multi-tenant SaaS environment and stand up to scrutiny from senior stakeholders. Note: This is a 6-month temporary opportunity with the possibility of extension. You Bring to Applaudo the Following Competencies: 5+ years of experience as a Full Stack Developer, with a demonstrated record of shipping production features independently. Strong, hands-on production experience with React and TypeScript, including MUI, styled-components, or an equivalent design-system component library. Proven experience building data-heavy enterprise UIs: admin and configuration screens, multi-level filtering, and large interactive tables via ag-Grid or equivalent, at real data volumes. Significant experience with either Python/FastAPI or Node.js, with working proficiency in the other. Solid SQL and hands-on PostgreSQL experience, including query optimization and relational data modeling. Experience implementing OAuth 2.0/Okta, JWT, and role-based access control in an API context. Demonstrated multi-tenant SaaS security practice: tenant isolation and data access controls. Effective daily use of AI coding assistants (Claude Code, Codex), with sound judgment validating generated