Junior / Strong Junior Full-Stack Developer (Backend-Focused, React, Node.js, Supabase) berko.tech Responds Quickly to $1000

Madfish

Madfish

Software Engineering

Ukraine · Lviv, Lviv Oblast, Ukraine,

USD 1k-1k / month

Posted on May 29, 2026

Fullstack Engineer (Backend-Focused)

We’re looking for a developer with strong backend and architecture thinking to work on scalable multi-tenant systems, realtime infrastructure, automations, and business-critical platform features.

The role includes both backend and frontend work, but the main focus is backend logic, security, data architecture, and system reliability.

Stack

Backend:
- Supabase
- Postgres
- RLS
- Realtime
- Auth
- Storage
- pg_cron
- Edge Functions (Deno + TypeScript)

Frontend
- React
- TypeScript
- Tailwind CSS
- TanStack Query
- shadcn/ui

Additional Technologies
- Stripe
- Mapbox
- AI integrations
- MQTT / IoT
- Capacitor (mobile)

Responsibilities

- Build and maintain multi-tenant backend systems
- Design secure RLS policies and permission flows
- Develop edge functions and backend business logic
- Work with realtime data and event-driven flows
- Build scheduling, automation and billing systems
- Integrate third-party services and APIs
- Support dashboard and operational frontend features
- Optimize application performance and scalability

Requirements

- Strong TypeScript experience
- Good understanding of Postgres and relational data design
- Experience building backend logic and APIs
- Understanding of authentication, permissions, and security
- Comfortable working across both frontend and backend

Nice to Have

- Stripe billing integrations
- Realtime systems
- AI integrations
- Mapbox or geospatial UI
- MQTT / IoT experience
- Mobile experience with React Native or Capacitor