Full Stack Engineer

Caio Full-Stack Engineer

Python / FastAPI | Next.js | TDD | Remote-friendly

About Caio

Caio automates end-to-end candidate compliance for education recruitment agencies, replacing manual work with deterministic, AI-powered workflows. We collect and validate documents, execute compliance rules, and produce a fully auditable clearance outcome for every candidate.

We’re early, moving fast, and building something technically interesting: agentic compliance pipelines, rules engines, and document-processing AI on top of a clean FastAPI / Next.js stack.

The Role

You’ll own both sides of the stack. Backend-heavy in practice (compliance logic, agentic workflows, third-party integrations), but you’ll also ship the React / Next.js surfaces that compliance teams and candidates live in every day.

This is not a “lite frontend, serious backend” split. We care deeply about both. The admin dashboard and candidate portal need to be fast, clear, and polished.

What You’ll Do

Backend

• Build and maintain FastAPI services that power compliance checks, document validation, and third-party integrations
• Design and implement durable, auditable workflow logic (traceability matters)
• Integrate external APIs: DBS providers, professional registers, identity verification services
• Write high-coverage tests first. TDD is not optional here
• Own database schema design and query performance on Postgres

Frontend

• Build the candidate portal and admin dashboard in Next.js with a component-first approach
• Implement clean, accessible UIs using shadcn/ui and Tailwind
• Keep frontend data-fetching patterns tight: React Query, typed API contracts, no mystery state
• Ship features end-to-end: you spec, build, test, and deploy

AI Engineering

• Build compliance agents that validate candidate data and review documentation against regulatory requirements
• Implement browser automation for external verification portals, including selector resilience and evidence capture
• Instrument LLM workflows with observability tooling: traces, evals, prompt regression tests, and scoring pipelines
• Maintain prompt quality through structured evaluation workflows. Broken prompts should fail CI

What We’re Looking For

Must-have

• Strong Python and FastAPI
• Solid React / Next.js
• Practises TDD as a default workflow
• Comfortable with relational databases (schema design, migrations, query optimisation)
• Experience with REST APIs and third-party integrations
• Browser automation with Playwright or similar
• Good Git hygiene

Nice-to-have

• Workflow orchestration experience (Temporal or similar)
• Regulated or compliance-adjacent product experience
• shadcn/ui, Radix, or similar headless component libraries
• LLM-powered document processing or agentic systems
• LLM evaluation workflows and observability tooling
• Agentic Engineering experience (AGENTS.md, ADRs, declarative specs)
• B2B SaaS experience including multi-tenancy and webhooks

How We Work

• Tests written before or alongside implementation
• Backend: FastAPI, Postgres (Neon), Temporal Cloud
• Frontend: Next.js, shadcn/ui, Tailwind
• Small PRs, fast reviews, frequent merges to main

We’re not looking for someone who ticks every box. If you’re strong on backend, care about code quality, and can build a decent frontend, let’s talk.