Senior Fullstack Engineer, Supabase

Workana

Backend-heavy full-stack developer partnering with a design-first founder building custom service industry software solutions. Focus on backend architecture and integration of various third-party tools.

Posted 5/22/2026contractRemote • 🇦🇷 ArgentinaSeniorWebsite

Tech Stack

Tools & technologies

Node.jsPostgresReactTypeScript

About the role

Key responsibilities & impact

Design and build backend infrastructure using Supabase, PostgreSQL, Auth, RLS, Storage, Realtime, and Edge Functions.
Create clean database schemas with proper relationships, indexes, constraints, and migration planning.
Write secure Row Level Security policies for user-facing tables.
Set up authentication flows, permissions, sessions, and access logic where needed.
Build TypeScript/Deno Edge Functions for business logic, webhooks, scheduled jobs, and API integrations.
Integrate third-party tools such as Stripe, Twilio, OpenAI, SendGrid/Resend, Zapier/Make, or client-specific APIs.
Connect React/Tailwind frontends to the backend and help bridge the handoff between UI and infrastructure.
Review existing backend work and suggest improvements without overcomplicating the product.
Help turn prototypes into stable, scalable, production-ready applications.

Requirements

What you’ll need

3–6+ years of experience building production full-stack or backend-heavy web applications
Deep hands-on experience with Supabase, including real shipped apps using RLS, Edge Functions, and Auth
Strong PostgreSQL fundamentals: schema design, indexes, query optimization, constraints, and ability to read an EXPLAIN plan
TypeScript / Node / Deno competence for building backend logic and Edge Functions
Strong security instincts: RLS, input validation, permissions, and secrets management should be part of your default approach
Clear written and spoken English for async handoff, documentation, and weekly Google Meet syncs
Self-directed working style: able to take a spec doc and prototype, move independently, and surface questions in batches
Strong communication skills, including the ability to explain tradeoffs and push back constructively when a better technical path exists
A portfolio, case study, clickable prototype, or live/repo link that shows how you think and build
Experience with third-party API integrations such as Stripe, Twilio, OpenAI, SendGrid/Resend, Make/Zapier, or client-specific tools
Comfort with React + Tailwind so you can help wire frontends to the backend
Experience with service-industry tools, such as CRMs, scheduling systems, operations dashboards, intake forms, or field-service workflows
A point of view on workflow and process design, including state flows, approval chains, dashboards, or operational logic

Benefits

Comp & perks

Long-term, ongoing contractor relationship — not a one-off project
Remote work, with LATAM timezone overlap preferred
Flexible part-time setup: starting around a 20-hour monthly retainer, with potential to grow to 40–60 hours/month depending on fit and project flow
High ownership and influence over technical direction
Collaborative, low-bureaucracy environment

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

SupabasePostgreSQLRow Level SecurityTypeScriptDenoAPI integrationsschema designquery optimizationinput validationpermissions management

Soft Skills

strong communication skillsself-directed working styleclear written and spoken Englishability to explain tradeoffsconstructive feedbackdocumentation skillsindependent problem solvingcollaborationasync handoffprototyping